DEPARTMENT OF THE INTERIOR U.S. FISH AND WILDLIFE SERVICE

REGION 8

FY04 AND FY06 REFUGE CLEANUP STUDY

Pre-Cleanup Characterization of Contaminants in Fill on the F&G Street Marsh, Sweetwater Marsh Unit of the San Diego Bay National

Wildlife Refuge, San Diego, California.

FINAL

DEC ID: 1261-1C73

FFS#: 1C73

Prepared by

Catherine Zeeman, PhD Carol A. Roberts

Environmental Contaminants Division

Carlsbad Fish and Wildlife Office

Congressional District 51

December 19, 2013

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ABSTRACT The F&G Street Marsh was acquired in 1988 as part of the Sweetwater Marsh Unit of the San Diego Bay National Wildlife Refuge. It is approximately 17.5 acres of salt marsh and includes habitat for endangered species and migratory birds. Approximately 3.9 acres of the marsh is covered with undocumented fill of sufficient depth to create upland habitat from what was marsh. Given its unknown origin, the fill material is presumed to be contaminated and may require handling as hazardous waste, if removed. The Refuge is considering removal of the fill material to restore historic salt marsh habitat, the feasibility of which will be determined largely by costs of removal and disposal of any hazardous waste. The Carlsbad Fish and Wildlife Office, Environmental Contaminants Division initiated a cleanup study in 2004 (1261-1C73, with supplemental 1130 funding) to characterize the nature and extent of contaminants in the fill material and thereby support the development of feasible removal actions that would benefit trust resources. The study included review of photographs, sampling, and chemical analyses in two phases. A grid approach was used with a sampling density of 12 stations per acre. One surface and one subsurface soil sample was collected from each station. Upon collection, core samples were split between a composite sample (from up to four cores per grid sector) and an individual archive sample (for future analysis if warranted). Samples were analyzed for inorganics, organochlorine pesticides, PCBs, dioxans/furans, and PAHs. From initial efforts we determined that: (1) fill appeared between 1964 and 1975, corresponding with development of roads and industrial operations nearby; (2) the fill material includes soil, rubble and construction debris; (3) fill depth varies from 1.0 to 48 inches, or greater in some areas; and (4) contaminant concentrations in the composite samples indicated that analysis of the individual archived samples was warranted (i.e., Phase 2), which commenced in 2006. When mapped, results of chemical analyses of soil samples indicate the presence of a contaminant hot spot, covering approximately 0.14 acres. In this area concentrations of lead (up to 5,138 mg/kg dw), total chromium (up to 5,404 mg/kg dw), chromium VI (up to 5,374 mg/kg dw) and zinc (up to 16,329 mg/kg dw) are high enough for soils to be classified as hazardous waste. Concentrations of PCBs (up to 13,218 μg/kg dw) observed in hot spot soils were sufficient to warrant cleanup with respect to ecological risks. Contaminant concentrations outside the hot spot were much lower, but still pose potential issues: Lead concentrations in numerous samples exceeded 50 mg/kg, triggering the need for leachate testing prior to disposal; and, a shallow subsurface deposit of waste oil was found (TPAH concentration of 12,570 μg/kg dw), necessitating additional analyses for classification (or not) as special waste pursuant to State requirements for disposal. Two areas were identified where concentrations of selected inorganics, pesticides and PAHs appear to be elevated, but not enough to qualify as hazardous waste. Overall, contaminant levels observed in fill area soils, pose little risk to humans as indicated by comparisons with generic conservative screening levels. Potential risks to ecological receptors are greater, but potentially not sufficient to warrant action if site-specific conditions and uses are considered. A number of data gaps were identified, including; (1) information on the volume and distribution of rubble and construction debris; (2) data on contaminant leachability for soils where leachability may be an issue for waste characterization; (3) data on TPH

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concentrations for California special waste characterization requirements; (4) data to delineate the extent of the potential special waste (i.e., waste oil) deposit; (5) sampling to determine if fill material is eroding into the marsh; and (6) characterization of site-specific use factors for assessing risks to ecological receptors under current and potential future use conditions. We recommend that an EE/CA be performed to fill data gaps and assess means and feasibility of removing the fill material. At a minimum, this should include hot spot removal and erosion control for the fill material to reduce contaminant-related risks to fish and wildlife. Keywords: DEC ID 1261-1C73, FFS number 1C73, Congressional District 52,

Congressional District 53, San Diego Bay National Wildlife Refuge, hazardous waste, lead, chromium, zinc, PCBs, pesticides

ACKNOWLEDGEMENTS The authors would like to thank Scott Sobiech (USFWS, CFWO) for assistance with sample collection, and San Diego Bay NWR staff for providing access, sampling assistance (Brian Collins, Refuge Manager) and input on historical information (Victoria Touchstone, Refuge Planner).

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Table of Contents ABSTRACT ....................................................................................................................... ii ACKNOWLEDGEMENTS ............................................................................................ iii List of Tables ..................................................................................................................... vi List of Figures ................................................................................................................... vii Acronyms/Abbreviations ............................................................................................... viii 1.0  INTRODUCTION.................................................................................................. 1 2.0 METHODS ................................................................................................................. 4 2.1  Site history ........................................................................................................................... 4 

2.2  Field activities ...................................................................................................................... 4 

A.  General approach .............................................................................................................. 4 

B.  Sample locations ................................................................................................................ 5 

C.  Sample collection ............................................................................................................... 5 

2.3  Sample processing ............................................................................................................... 8 

2.4  Chemical analysis ................................................................................................................. 8 

2.5  Data analysis ...................................................................................................................... 13 

A.  Field .................................................................................................................................. 13 

B.  Units ................................................................................................................................. 13 

C.  Mixtures ........................................................................................................................... 13 

D.  Spatial analysis and presentation ................................................................................... 14 

E.  Screening for waste characterization .............................................................................. 14 

F.  Screening for risk .............................................................................................................. 16 

G.  Screening for background ............................................................................................... 17 

3.0 PHASE I RESULTS AND DISCUSSION ............................................................. 20 3.1  History ................................................................................................................................ 20 

A.  Acquisition by FWS .......................................................................................................... 20 

B.  Fill area history ................................................................................................................ 20 

3.2  Fill characteristics and depth ............................................................................................. 24 

3.3  Contaminant levels in samples / contaminants of potential concern ............................. 27 

A.  Comparison with hazardous waste criteria .................................................................... 27 

B.  Comparison with risk‐based screening levels and background ..................................... 28 

C.  Contaminants of potential concern (COPCs) .................................................................. 36 

3.4  Areas of concern ................................................................................................................ 36 

4.0 PHASE I CONCLUSIONS AND RECOMMENDATIONS ................................ 41 5.0 PHASE II - METHODS .......................................................................................... 42 5.1  Selection of samples and target analytes ......................................................................... 42 

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5.2  Chemical analyses .............................................................................................................. 43 

5.3  Data analysis ...................................................................................................................... 46 

A.  Additions .......................................................................................................................... 46 

B.  Screening level updates ................................................................................................... 47 

6.0 PHASE II RESULTS AND DISCUSSION ............................................................ 47 6.1  Sample parameters ............................................................................................................ 47 

6.2  Contaminant levels in individual samples ........................................................................ 48 

A.  Comparison with hazardous waste criteria .................................................................... 65 

B.  Comparison with risk‐based screening levels ................................................................. 66 

Human health risk‐based screening levels ........................................................................ 66 

Ecological risk‐based screening levels ............................................................................... 68 

Other risk – offsite migrations ........................................................................................... 71 

C.  Tentative delineation of contamination ......................................................................... 71 

D.  Data gaps ......................................................................................................................... 74 

7.0 CONCLUSIONS AND RECOMMENDATIONS ................................................. 75 8.0 REFERENCES ......................................................................................................... 77 ATTACHMENTS ........................................................................................................... 83 

A.  Analytical results from Phase I (Composite Samples) .................................................... 83 

B.  Analytical Results from Phase II (Individual Samples) ................................................... 83 

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List of Tables Table 1. Coordinates and depths of soil samples ............................................................ 6 Table 2. Estimated cover (acres) per composite sample ............................................... 10 Table 3a. Target analytes for composite samples – Organochlorines and parameters ... 11 Table 3b. Target analytes for composite samples - PAHs .............................................. 12 Table 3c. Target analytes for composite samples - Inorganics ....................................... 12 Table 4. Total Threshold Limit Concentrations for hazardous waste characterization 15 Table 5a. Risk-based screening levels for organic analytes in soil samples................... 18 Table 5b. Risk-based screening levels for inorganic analytes in soil samples. .............. 19 Table 6. Background and reference concentrations of inorganics in soil ..................... 20 Table 7. Parameters for composite soil samples ........................................................... 25 Table 8. Maximum concentrations of analytes in composite samples and TTLCs ...... 28 Table 9. Concentrations of inorganic analytes in composite samples .......................... 30 Table 10. Concentrations of organochlorines in composite samples .............................. 31 Table 11. Concentrations of PAH compounds in composite samples ............................ 33 Table 12. Contaminants of Potential Concern ................................................................ 36 Table 13. Concentrations of Cd, Cu, Ni and Se in composite samples. ......................... 38 Table 14. Individual samples and target analytes for Phase II characterization ............. 45 Table 15. Basic features of individual soil samples ........................................................ 49 Table 16. Concentration ranges of inorganic analytes in individual samples ................. 50 Table 17. Concentrations of organochlorine compounds in individual samples ............ 55 Table 18. Concentrations of PAH compounds in individual samples ............................ 61 Table 19. Concentrations of analytes in individual samples and TTLCs ....................... 65 

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List of Figures Figure 1. Location of the F&G St. Marsh ........................................................................ 2 Figure 2. Locations and station numbers for surface and subsurface soil samples .......... 9 Figure 3. F&G St. Marsh in 1859 ................................................................................... 22 Figure 4. F&G St. Marsh in 1964 ................................................................................... 22 Figure 5. F&G St. Marsh in 1970 ................................................................................... 23 Figure 6. F&G St. Marsh in 1975 ................................................................................... 23 Figure 7. F&G St. Marsh in 1990 ................................................................................... 24 Figure 8. Depth of fill. .................................................................................................... 26 Figure 9. Concentrations of Cr, Pb and Zn in composite samples ................................. 37 Figure 10. Concentrations of organic COPCs measured in composite samples .............. 39 Figure 11. Distribution of total chromium concentrations in soil samples ...................... 51 Figure 12. Distribution of zinc concentrations in soil samples ........................................ 52 Figure 13. Distribution of lead concentrations in soil samples ........................................ 53 Figure 14. Distribution of PCB concentrations in soil samples ....................................... 58 Figure 15. Distribution of tDDT concentrations in soil samples ..................................... 63 Figure 16. Distribution of TPAH concentrations in soil samples .................................... 64 Figure 17. Tentative extent of contaminated areas ........................................................... 73 

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Acronyms/Abbreviations AA Atomic Absorption ACF Analytical Control Facility Al Aluminum As Arsenic B Boron Ba Barium Be Beryllium bgs below ground surface BHC Benzenehexachloride (also hexachlorocyclohexane) CCP Comprehensive Conservation Plan CCR California Code of Regulations Cd Cadmium CFWO Carlsbad Fish and Wildlife Office CHHSL California Human Health Screening Levels CL1 monochloro- Cl10 decachloro- Cl2 dichloro- Cl3 trichloro- Cl4 tetrachloro- Cl5 pentachloro- Cl6 hexachloro- Cl7 heptachloro- Cl8 octachloro- Cl9 nonachloro- COPC Contaminants of potential concern Cr Chromium Cr III Trivalent chromium Cr VI Hexavalent chromium Cu Copper DDD Dichlorodiphenyldichloroethane DDE Dichlorodiphenyldichloroethylene DDT Dichlorodiphenyltrichloroethanes DDTt Total DDT dw dry weight ECO-SSL Ecological Soil Screening Level EE/CA Engineering Evaluation/Cost Analysis EPA U.S. Environmental Protection Agency Fe Iron fsolids fraction solids ft foot GERG Geochemical and Environmental Research Group GIS Geographic Information Systems HCB Hexachlorobenzene Hg Mercury HGAA Hydride generation atomic absorption HpCDD Heptachlorodibenzo-p-dioxin HpCDF Heptachlorodibenzofuran

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HPLC High performance liquid chromatography HRGC High resolution gas chromatography HRMS High resolution mass spectrometry HxCDD Hexachloro dibenzo-p-dioxin HxCDF Hexachlorodibenzofuran ICP Inductively coupled plasma kg kilogram LET Laboratory and Environmental Testing LOEC Lowest Observed Effect Concentration Mg Magnesium mg milligram Mn Manganese Mo Molybdenum Ni Nickel nm nanometer NOAEL No Observed Adverse Effect Level NOEC No Observed Effect Concentration NWR National Wildlife Refuge OCDD Octachlorodibenzo-p-dioxin OCDF Octachlorodibenzofuran OEHHA California Office of Environmental Health Hazard Assessment PAH Polynuclear aromatic hydrocarbon Pb Lead PCB Polychlorinated biphenyl PCDD Polychlorinated dibenzo-p-dioxin PCDF Polychlorinated dibenzofuran PeCDD Pentachloro dibenzo-p-dioxin PeCDF pentachlorodibenzofuran ppb parts per billion (µg/kg) ppm parts per million (mg/kg) PRG Preliminary remediation goal QA Quality assurance QC Quality control RCRA Resource Conservation and Recovery Act RSL Regional Screening Level RTI Research Triangle Institute Se Selenium SIM Selective Ion Monitoring Sr Strontium STLC Soluble Threshold Limit Concentration TCB Tetrachlorobenzene TCDD Tetrachloro dibenzo-p-dioxin TCDF Tetrachlorodibenzofuran TCLP Toxicity Characteristic Leaching Procedures TEF Toxic equivalency factor TEQ Toxic equivalent concentration TOC Total Organic Carbon TPAH Total polynuclear aromatic hydrocarbon

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TRPH Total recoverable petroleum hydrocarbon TRV toxicity reference value TTLC Total Threshold Limit Concentration ug microgram USFWS U.S. Fish and Wildlife Service V Vanadium WET Waste Extraction Test ww wet weight Zn Zinc

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1.0 INTRODUCTION The F&G Street Marsh, located at the west end of F Street in San Diego, California, is part of the Sweetwater Marsh Unit of the San Diego Bay National Wildlife Refuge (NWR; Figure 1.) The F&G Street Marsh provides approximately 17.5 acres of salt marsh habitat for the federally endangered light-footed clapper rail (Rallus longirostris levipes), federally endangered salt marsh bird's beak (plant; Chloropyron maritimum subsp. maritimum), and State of California endangered Belding's savannah sparrow (Passerculus sandwichensis beldingi). The marsh also provides foraging habitat for migratory birds, especially shorebirds, wading birds and waterfowl. Approximately 3.9 acres (or 18,876 yd2) in the north east corner of F&G Marsh is covered with undocumented fill. The amount of fill is sufficient to have raised the surface elevation and created upland habitat out of historical salt marsh habitat. The fill area is accessible to public dumping and anecdotal information suggests that the fill may contain a variety of discarded materials, including construction debris, municipal street sweepings and ash from municipal trash burning (USFWS 2006). In addition, upland areas bordering the marsh have a long history of agricultural and industrial uses which may have contributed to the fill. Because of the history, fill material may have elevated levels of metals, pesticides, polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins and furans (PCDDs/PCDFs), and/or polynuclear aromatic hydrocarbons (PAHs). Projects to restore marsh habitat at F & G Marsh are currently under consideration as part of the Comprehensive Conservation Plan (CCP) for the Sweetwater Marsh NWR and South San Diego Bay Units of the San Diego Bay NWR (USFWS 2006). Some of the restoration alternatives include the fill area, and preliminary efforts have been undertaken to evaluate contamination in fill material to help determine which restoration alternatives would be most beneficial and feasible. Initial studies were conducted by P&D Environmental (2003) to determine fill depth and if contaminants are present at levels of concern in terms of waste management and potential human health risks. Borings were drilled to determine depth of fill, and surface samples (0-6 inches) were collected for chemical analysis at two locations outside the fill area and four locations within the fill area. Surface samples were analyzed for metals including hexavalent chromium (Cr VI), semi-volatile organic compounds including certain PAHs, volatile organic compounds, PCBs, total recoverable petroleum hydrocarbons (TRPH), PCDDs and PCDFs. The authors observed that concentrations of lead, mercury, cadmium and PCDDs/PCDFs in some samples of surface material exceeded human health risk-based screening levels for soil under residential use scenarios, and the lead concentration in one sample exceeded the State's threshold for characterizing material as hazardous waste (22 CCR Division 4.5, Chapter 11, Article 3). Total recoverable petroleum hydrocarbons were detected in three borings, but at concentrations that are considered to be low and alone would not require further action. The fill depth was found to be approximately 48 inches for an estimated total fill volume equal to 25,000 cubic yards. Based on their limited observations P&D Environmental (2003) concluded that removal of fill for restoration projects would require a costly hazardous remediation effort.

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Figure 1. Location of the F&G St. Marsh, Sweetwater

Marsh Unit, San Diego Bay NWR.

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Because of the low sampling density (approximately 1 sample/acre) and the focus on surface soils for chemical analysis, the study by P&D Environmental (2003) provides limited data on the nature, and none on the extent of contamination in fill area soils. With support from the Refuge Cleanup Fund (1261-1C73) and some additional support for chemical analyses in 2004 from the Carlsbad Fish and Wildlife Office (CFWO) (1130-81430), the current study was undertaken to more precisely characterize the nature and distribution of contamination in fill area material. This was accomplished by using a sampling density of 12 samples per acre and collecting both surface and subsurface samples. Aerial photography, and historical reports were used to determine the history and contours of fill area. Surface and subsurface soil samples were chemically analyzed to characterize the nature and distribution of contaminants associated with fill material. Data on nature and distribution of contamination were used to tentatively delineate which portions of the fill that, if removed, might require excavation and disposal under hazardous waste regulations. The data were also evaluated, using a screening level approach for potential risks posed to humans and ecological receptors by contaminants in soils that are left in place. Results of this study will support efforts to evaluate the feasibility of restoration alternatives, and ensure that selected actions are appropriate and protective of endangered species and the Service's other trust resources. Because of the way the refuge was established, companies such as Pacifica Companies, Incorporated, have the option to consider projects on F&G Street Marsh as mitigation associated with development on other properties (P&D Environmental 2003). Results of this study will help determine the type and extent of remediation that is required prior to implementation of restoration projects by the Refuge or other entities. The purpose of this study was to characterize nature and distribution of contaminants in fill soils both at the surface and below the surface, to (1) determine the locations and volumes of material that may require special consideration for disposal under State waste disposal regulations if soils are removed, and (2) assess potential risks to ecological receptors if soils are left in place. The study was conducted in two phases. Phase I entailed: • Using a grid approach for selecting sample stations, collecting surface and subsurface

soil samples for chemical analysis from 47 stations throughout the 3.9-acre fill area; • Compositing aliquots of surface and subsurface soil samples (up to four per grid

sector) for immediate chemical analysis by a laboratory under contract with the Service’s Analytical Control Facility (ACF; catalog numbers 1040071 and 1040072) and archiving aliquots of individual samples for future analysis if desired;

• Collecting observational data during sample collection on the physical characteristics

and depth of fill at sample stations throughout the 3.9 acre fill area; • Obtaining historical aerial photographs for visual analysis of fill area development,

and;

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• Evaluating results of chemical analyses on composite soil samples to determine (1) if

concentrations of contaminants, and if so which ones, exceed State hazardous waste criteria, and (2) identify which individual archived samples should be submitted for chemical analyses to support a more precise delineation of the fill material that may require special consideration as hazardous waste.

Phase II entailed: • Selecting and submitting specific archived samples for chemical analyses (Catalog

numbers 1040074 and 1040075), and; • Evaluating results obtained with individual samples to (1) characterize the

distribution of contamination by substances present at levels that exceed hazardous waste criteria, and (2) conduct a screening level assessment of potential risks posed to humans and FWS trust resources by contaminants in fill material if left in place.

1.0 PHASE I METHODS 2.1 Site history Historical aerial photographs were reviewed to help track the development of the fill area and to evaluate land use patterns in the immediate vicinity of the marsh. Photographs and maps dating back to the 1800s and early 1900s were obtained from existing files (Adrian Brown 1998; USFWS 2006). Historical aerial photographs from 1964, 1970, 1975 and 1990 were purchased from Landiscor, San Diego, California. The photos were purchased in electronic format and as such were added to the library maintained by Geographic Information Systems (GIS) staff at CFWO. The report of the contaminants study by P&D Environmental (2003), the site assessment and records search by Adrian Brown (1998) for the Goodrich Aerostructures facility bordering F&G Street Marsh and the CCP/EIS by USFWS (2006) provided background information on the geology and land use around the marsh. 2.2 Field activities A. General approach Field sampling was conducted as part of Phase I in September 2004. A grid approach was used to select sample locations. The fill area was represented by all or part of sixteen 0.33-acre sectors to ultimately achieve a target sampling density of 12 stations per acre (Figure 2a). One to four stations were sampled within each grid sector, with only those occurring within the fill (rather than marsh) being sampled. One surface soil sample (0-12 inches) and one subsurface soil sample (12 inches to bottom of fill, or refusal in some cases) was collected at each location. A portion of each sample was set aside for archiving (Phase II), while another portion was set aside for compositing with other

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samples from the same sector (Phase I). For Phase I of the study, one composite surface and one composite subsurface soil sample was produced for each of the 16 sectors. In most cases, the samples are composites of material from two to four locations within the sector. Sectors for which only one quarter fell within the fill area are represented by soil from only one station. The composite samples representing 16 sectors were analyzed for contaminants, total organic carbon (TOC), and grain size distribution. The archived samples were set aside for future analyses, as determined from results obtained with the composite samples. B. Sample locations A grid with spacing of 120.5 ft by 120.5 ft was used to delineate square 0.33-acre sectors. Four potential sample locations were selected for each sector. Sample locations were at the halfway point between each of the four corners and the center of each sector. The grid with tentative sample locations was laid over a figure of the fill area. The fill area occupied all or, because of the fill area’s irregular shape, portions of sixteen sectors. Of the four potential stations per sector, only those that fell within the fill area boundaries were selected for sampling (Figures 2a and 2b). A total of 47 sample locations was selected for a density of approximately 12 stations per acre. Once in the field, an offset protocol was used to relocate those stations that were not amenable to sample collection due to refusal. An initial offset of 1 ft. was attempted and if that failed, the sample station was moved along the diagonal to a position 7 ft. closer to the center of the sector. With a few exceptions, efforts to collect the sample were abandoned if the 7 ft. offset failed to produce a deep enough sample. For the exceptions, a subsurface sample was collected if the depth at refusal was greater than 20 inches below ground surface (bgs). In the end, individual surface soil samples were collected at 47 stations and subsurface soil samples were obtained at 38 stations (Figures 2a and 2b). The geographic coordinates at which samples were actually collected were recorded at the time of collection and are provided in Table 1 for reference. C. Sample collection

Soil samples were collected by CFWO Environmental Contaminants Division staff with assistance from MEC/Weston Solutions, Carlsbad, California. A stainless steel split spoon core was used to collect surface soil samples, which extended to a depth of 12 inches bgs. Each surface sample was placed on a fresh piece of aluminum foil and photographed before placement in a stainless steel bowl for processing. Subsurface samples were collected with a gasoline powered 8 inch by 48 inch two-man auger. Other coring devices were tried but were not successful due to the compactness of the soil. Holes were drilled to a depth of 48 inches or refusal. Additional holes were drilled at offset locations when refusal was encountered as described above. Once drilled, the augur was pulled from the hole and photographed.

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Table 1. Coordinates and depths of surface and subsurface soil samples

from F&G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR collected from the fill area of F & G Street Marsh, San Diego Bay NWR.

(UTM

-eas

t)

(UTM

-nor

th)

Stud

y Se

ctor

Stat

ion

ID

surf

ace

sa

mpl

e de

pth

(inch

es)

subs

urfa

ce

sam

ple

dept

h (in

ches

)

490306.250 3610787.250 3 03-sw 0 - 12 12 - 31 490324.750 3610787.250 3 03-se 0 - 12 490361.750 3610805.750 4 04-ne 0 - 12 490343.250 3610787.250 4 04-sw 0 - 12 12 - 44 490361.750 3610787.250 4 04-se 0 - 12 490380.250 3610805.750 5 05-nw 0 - 12 12 - 44 490380.250 3610787.250 5 05-sw 0 - 12 490381.750 3610788.750 5 05-sw 12 - 20 490287.750 3610768.750 6 06-ne 0 - 12 490269.250 3610750.250 6 06-sw 0 - 12 12 - 30 490287.750 3610750.250 6 06-se 0 - 12 12 - 30 490306.250 3610768.750 7 07-nw 0 - 12 12 - 48 490324.750 3610768.750 7 07-ne 0 - 12 490323.250 3610767.250 7 07-ne 12 - 48 490306.250 3610750.250 7 07-sw 0 - 12 490307.750 3610751.750 7 07-sw 12 - 30 490324.750 3610750.250 7 07-se 0 - 12 490343.250 3610768.750 8 08-nw 0 - 12 490344.750 3610767.250 8 08-nw 12 - 33 490361.750 3610768.750 8 08-ne 0 - 12 490360.250 3610767.250 8 08-ne 12 - 43 490343.250 3610750.250 8 08-sw 0 - 12 12 - 44 490361.750 3610750.250 8 08-se 0 - 12 12 - 48 490380.250 3610768.750 9 09-nw 0 - 12 12 - 31 490398.750 3610768.750 9 09-ne 0 - 12 490397.250 3610767.250 9 09-ne 12 - 40 490380.250 3610750.250 9 09-sw 0 - 12 12 - 39 490398.750 3610750.250 9 09-se 0 - 12 12 - 32 490269.250 3610731.750 10 10-nw 0 - 12 12 - 44 490287.750 3610731.750 10 10-ne 0 - 12 490286.250 3610730.250 10 10-ne 12 - 42 490270.000 3610718.000 10 10-sw 0 - 12 490269.250 3610713.250 10 10-sw 12 - 28 490286.250 3610714.750 10 10-se 0 - 12

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Table 1, cont. Coordinates and depths of surface and subsurface soil samples

collected from the fill area of F & G Street Marsh, San Diego Bay NWR.

(UTM

-eas

t)

(UTM

-nor

th)

Stud

y Se

ctor

Stat

ion

ID

surf

ace

sa

mpl

e de

pth

(inch

es)

subs

urfa

ce

sam

ple

dept

h (in

ches

)

490307.750 3610730.250 11 11-nw 0 - 12 490326.000 3610732.000 11 11-ne 0 - 12 490306.250 3610713.250 11 11-sw 0 - 12 12 - 48 490324.750 3610713.250 11 11-se 0 - 12 12 - 30 490343.250 3610731.750 12 12-nw 0 - 12 12 - 46 490361.750 3610731.750 12 12-ne 0 - 12 12 - 40 490343.250 3610713.250 12 12-sw 0 - 12 12 - 46 490361.750 3610713.250 12 12-se 0 - 12 12 - 46 490380.250 3610731.750 13 13-nw 0 - 12 12 - 46 490397.250 3610730.250 13 13-ne 0 - 12 490398.750 3610731.750 13 13-ne 12 - 46 490381.750 3610714.750 13 13-sw 0 - 12 490380.250 3610713.250 13 13-sw 12 - 46 490398.750 3610713.250 13 13-se 0 - 12 12 - 46 490287.750 3610694.750 14 14-ne 0 - 12 490286.250 3610693.250 14 14-ne 12 - 22 490306.250 3610694.750 15 15-nw 0 - 12 490324.750 3610694.750 15 15-ne 0 - 12 12 - 36 490324.750 3610676.250 15 15-se 0 - 12 12 - 48 490343.250 3610694.750 16 16-nw 0 - 12 12 - 27 490343.250 3610676.250 16 16-sw 0 - 12 12 - 27 490352.500 3610687.750 16 16-C 0 - 12 12 - 26 490380.250 3610694.750 17 17-nw 0 - 12 12 - 48 490343.250 3610657.750 20 20-nw 0 - 12 12 - 29

The walls of holes were inspected for evidence of transition to grey clayey and organic sediment which was presumed to be the uppermost layer of native material based on the description by P & D Environmental (2003). The depth of the transition, when evident was noted as the depth of fill. In many cases, the depth of the hole was limited by refusal due to asphalt, concrete, rocks or other construction debris. A stainless steel spoon was used to remove equal amounts of material from each augur flight between 12 inches bgs and the depth at which native material or refusal was encountered. The material thus collected was placed in a stainless steel bowl for subsequent processing. Spoons and bowls were hand washed with Alkanox solution and rinsed with de-ionized water between samples. Similarly, both the split spoon core used for surface samples and the augur used for subsurface samples were hand washed with Alkanox solution and rinsed with de-ionized water between samples. On one occasion

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when tar-like substance was encountered, equipment was cleaned with an organic solvent (gasoline) prior to washing with detergent and rinsing with de-ionized water. 2.3 Sample processing Sample processing was the same for both surface soil samples and subsurface soil samples. Both individual and composite samples were collected, where the composite samples consisted of material from multiple locations within an individual sector. Each individual sample was initially homogenized with stainless steel spoon. A portion of each sample was then collected for archiving. Approximately 200 grams was placed in a Whirl-Pak bag for TOC and grain size analysis, and another 200 grams was placed in a pre-cleaned I-Chem jar for chemical analysis. In addition, a measured amount of each sample was placed in a stainless steel bowl for compositing with equal amounts of other samples from the same sector. Once samples for each sector were combined, the material was homogenized to produce a composite for that sector. Approximately 200 grams of each composite was placed in a Whirl-Pak bag for TOC/grain size analysis, and another 200 grams was placed in a pre-cleaned I-Chem jar for chemical analysis. The number of individual samples that contributed to the composite for each grid sector and the estimated area represented by each sector’s composite sample are shown in Table 2. All samples were placed on ice for transport to CFWO, where they were cataloged and stored in freezers until they were shipped for chemical analyses to laboratories designated by the Service’s ACF. 2.4 Chemical analysis For Phase I of the study, a total of 16 composite surface soil samples and 16 composite subsurface soil samples were shipped in October 2004 to ACF designated laboratories for analyses, under catalog numbers 1040071 and 1040072. All samples were to be analyzed for moisture content, TOC, grain size distribution, PAH scan, organochlorine scan (including total PCBs as aroclors), PCDDs, PCDFs, and metals. Samples were analyzed for routine analytes offered by labs under contract with ACF. They included nearly all of the contaminants that have solid phase screening levels for hazardous waste designation (TTLCs from 22 CCR Division 4.5, Chapter 11, Article 3, §66261.24). The TTLC analytes that were not included in the analyses were antimony, cobalt, silver, thallium, fluoride salts, asbestos, the herbicides 2,4-D and 2,4,5-TP, and the organochlorine pesticide Kepone. Geochemical and Environmental Research Group (GERG) in College Station, Texas, analyzed samples for organic contaminants, TOC, grain size and percent moisture. Laboratory and Environmental Testing, Incorporated (LET), Columbia, Missouri, conducted analyses for metals and percent moisture.

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Figure 2. Locations and station numbers for surface (a) and subsurface (b) soil samples collected in 2004 from the F&G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR.,

Sweetwater Marsh Unit, San Diego Bay NWR. a) b)

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Table 2. Estimated cover (acres) and number of individual samples per composite

sample from F&G St. Mash fill area, Sweetwater Marsh Unit, San Diego Bay NWR collected from the F & G St. Marsh fill area.

Sector Acres Number of individual samples in the composite Surface soil Subsurface soil

3 0.17 2 1 4 0.33 3 1 5 0.17 2 2 6 0.33 3 2 7 0.33 4 3 8 0.33 4 4 9 0.25 4 4

10 0.30 4 3 11 0.33 4 2 12 0.33 4 4 13 0.30 4 4 14 0.08 1 1 15 0.25 3 2 16 0.25 3 3 17 0.08 1 1 20 0.08 1 1

Total 3.91 47 38 The percent TOC was determined by measuring carbon dioxide produced on ignition of acidified, freeze-dried sample, using an infrared detector. Grain size distribution was determined as percent sand (>0.063 mm), silt (0.0039 mm to 0.063 mm) and clay (<0.0039 mm) using sieves and settling columns after sample had been treated with hydrogen peroxide and a dispersing agent. For metals, samples were acid extracted, then analyzed using hydride generation atomic absorption (HGAA) spectrometry (selenium and arsenic), cold vapor atomic absorption (AA) spectrometry (for mercury) or Inductively Coupled Plasma Emission (ICP) spectrometry (other metals). To determined concentrations of the organochlorine compounds (pesticides and total PCBs), samples of soil were first extracted with methylene chloride and cleaned using gel-permeation chromatography. Silica gel chromatography was used for additional cleaning and separation of PCBs. Samples were then analyzed by gas chromatography with an electron capture detector (pesticides and PCBs) or high resolution gas chromatography-mass spectrometry (HRGC/HRMS) in Selective Ion Monitoring (SIM) mode (dioxins and furans). Samples to be analyzed for PAHs were extracted in methylene chloride and purified by silica/alumina column chromatography. Samples may have been further purified with High Performance Liquid Chromatography (HPLC). Quantitative analyses were conducted using HRGC/HRMS in the SIM mode. Laboratories used analytical methods and followed quality assurance (QA) and quality control (QC) protocols in accordance with requirements by ACF. A rigorous program of methods standardization and QA/QC assessment is maintained by ACF for all contract laboratories. Procedural blanks, duplicates, spiked samples, and analysis of standard

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reference materials were used routinely with each batch of samples to evaluate and maintain QA/QC. The target analytes and method detection limits reported by the contract labs are shown in Tables 3a - 3c.

Table 3a. Target analytes for composite soil samples - Organochlorine compounds and parameters. Polychlorinated dibenzo(p)dioxins PCB-total4 (polychlorinated biphenyls as Aroclors) 2,3,7,8-TCDD1 1,2,3,7,8-PeCDD2 Pesticides 1,2,3,4,7,8-HxCDD2 Aldrin5 1,2,3,6,7,8-HxCDD2 Alpha-, beta-, gamma, and delta-BHC5 (hexachlorocyclohexanes) 1,2,3,7,8,9-HxCDD2 Alpha- and gamma-chlordanes5 1,2,3,4,6,7,8-HpCDD2 Chlorpyrifos5 OCDD3 Dieldrin5 Endosulfan II5 Endrin5 Polychlorinated dibenzofurans Heptachlor5 2,3,7,8-TCDF1 Heptachlor epoxide5 1,2,3,7,8-PeCDF2 HCB5 (hexachlorobenzene) 2,3,4,7,8-PeCDF2 Mirex5 1,2,3,4,7,8-HxCDF2 Cis-, and trans-nonachlor5 1,2,3,6,7,8-HxCDF2 Oxychlordane5 1,2,3,7,8,9-HxCDF2 o,p'- and p,p’-DDD5 (dichlorodiphenyldichloroethanes) 2,3,4,6,7,8-HxCDF2 o,p'- and p,p’-DDE5 (dichlorodiphenyldichloroethylenes) 1,2,3,4,6,7,8-HpCDF2 o,p'- and p,p’-DDT5 (dichlorodiphenyltrichloroethanes) 1,2,3,4,7,8,9-HpCDF2 Pentachloro-anisole5 OCDF3 1,2,3,4- and 1,2,4,5-TeCB (tetrachlorobenzenes)5 Toxaphene4 Tetrachlorobenzenes (1,2,3,4- and 1,2,4,5-) Parameters Percent moisture Percent total organic carbon Grain size distribution 1. Dry weight detection limit (µg/kg or ppb) = 0.00042 2. Dry weight detection limit (µg/kg or ppb) = 0.00207 3. Dry weight detection limit (µg/kg or ppb) = 0.00415 4. Dry weight detection limit (µg/kg or ppb) = 1.43 5. Dry weight detection limit (µg/kg or ppb) = 0.143

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Table 3b. Target analytes for composite soil samples - Polynuclear aromatic hydrocarbons

(PAHs), parent compounds and alkylated homologs. Two-ring compounds Naphthalene 1-methylnaphthalene 2-methylnaphthalene 2,6-dimethylnaphthalene 1,6,7-Trimethyl-naphthalene C1-naphthalenes C2-naphthalenes C3-naphthalenes C4-naphthalenes Biphenyl Three-ring compounds Acenaphthalene Acenaphthene Fuorine C1-fluorenes C2-fluorenes C3-fluorenes Phenanthrene 1-methylphenanthrene Anthracene C1-Phenanthrenes & Anthracenes C2-Phenanthrenes & Anthracenes C3-Phenanthrenes & Anthracenes C4-Phenanthrenes & Anthracenes

Four-ring compounds Fluoranthene Pyrene C1-Fluoranthenes & Pyrenes Chrysene C1-chrysenes C2-chrysenes C3-chrysenes C4-chrysenes Benzo(a)anthracene Five-ring compounds Benzo(b)fluoranthene Benzo(k)fluoranthene Benzo(a)pyrene Benzo(e)pyrene Perylene Dibenz(a,h)anthracene Six-ring compounds Indeno(1,2,3-cd)pyrene Benzo(g,h,i)perylene Sulfur-containing compounds Dibenzothiophene C1-dibenzothiophenes C2-dibenzothiophenes C3-dibenzothiophenes

Dry weight detection limits (µg/kg or ppb) = 1.70

Table 3c. Target analytes for composite soil samples - Inorganics.

Al1 (aluminum) Mg6 (magnesium) As2 (arsenic) Mn7 (manganese) B1 (boron) Mo6 (molybdenum) Ba2 (barium) Ni6 (nickel) Be3 (beryllium) Pb6 (lead) Cd3 (cadmium) Se2 (selenium) Cr4 (chromium-total) Sr4 (strontium) Cu4 (copper) V4 (vanadium) Fe1 (iron) Zn7 (zinc) Hg5 (mercury) 1. Dry weight detection limit (mg/kg or ppm) = 10 2. Dry weight detection limit (mg/kg or ppm) = 0.5 3. Dry weight detection limit (mg/kg or ppm) = 0.2 4. Dry weight detection limit (mg/kg or ppm) = 1.0 5. Dry weight detection limit (mg/kg or ppm) = 0.1 6. Dry weight detection limit (mg/kg or ppm) = 5.0

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2.5 Data analysis A. Field Data from field observations on holes drilled for subsurface soil samples were used to determine depth of fill or refusal. A total of 65 holes were attempted, 29 of which had recognizable transitions to native clay. The remaining 36 were drilled to refusal. The cause for refusal was noted in the field log, as were encounters with unusual materials such as oily material and paint chips.

B. Units Analytical results were provided by contract labs as both wet weight (ww) and dry weight (dw)-based concentrations in mg/kg or parts per million (ppm) for inorganic analytes and as µg/kg or parts per billion (ppb) for organic analytes. To be consistent with the various screening values, ww-based contaminant levels were used to determine if contaminant levels exceed California state screening levels for hazardous waste classification. Dry weight-based contaminant levels were used for all other aspects of data evaluation, which included comparison with risk-based screening levels for ecological and human uses, characterizing the distribution of contaminants within the fill area, and ascertaining if measured levels of naturally occurring compounds (most notably metals) are reflecting impacts from a contaminated source, or may be typical for soils in an urban area. While most of the details on chemical results are provided as dry weight based concentrations, the percent moisture reported for each sample is provided to enable conversion between wet and dry weight concentrations as follows.

Wet weight concentration = dry weight concentration x (fsolids), or

Dry weight concentration = wet weight concentration / (fsolids), where fsolids = 1- (percent moisture/100)

C. Mixtures The PAHs, DDT and its metabolites, chlordanes, PCBs, and PCDDs/PCDFs are families of compounds that occur as mixtures. Individual substances that have screening levels (e.g., some PAH compounds and p,p’-DDE) could be evaluated individually. However, it was also desirable to evaluate the distribution and potential risks posed by concentrations of mixtures as a whole. In general, each total mixture concentration was computed as the sum of the individual components, with ½ the detection limit used as a surrogate for those that were below the limit of detection. For PAHs, the overall total was the sum of the concentrations reported for 44 individual compounds. The 44 are a subset of all that may be present, but they are generally the most abundant and include more than the minimum number of PAHs needed to assess the toxicity of the mixture as a whole (USEPA 2002). The PAHs also fall into two subclasses, based on differences in modes of toxic action. These are the low molecular weight PAHs (LPAHs), computed as the sum of the concentrations of compounds with 2 or 3 rings, and the high molecular

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weight PAHs (HPAHs) computed as the sum of the concentrations of compounds with more than 3 rings and dibenzothiophenes. Total concentrations for DDTt and its metabolites were computed as the sums of the six individual compounds (o,p and p,p'- DDD, DDE and DDT). Total chlordane concentrations were computed as the sum of the concentrations of the cis (alpha)- and trans (gamma)-chlordanes, oxychlordane (the major chlordane metabolite), and cis- and trans-nonachlors (chlordane impurities), as recommended by USEPA (2000). The PCBs constitute a family of 209 individual compounds (congeners) that belong in one of 10 homolog classes, defined by the number of chlorines present on the molecule (Cl1, Cl2, Cl3, etc.). Total PCB concentrations can be quantified a number of ways. When analyzed as part of the organochlorine scan, which was the case for Phase I samples, total PCBs were measured and reported as a single mixture (Aroclor). Additional approaches were used with samples analyzed in Phase II for congeners and homologs. Dioxins (PCDDs) and furans (PCDFs) constitute a family of 210 congeners. Analysis for PCDDs and PCDFs were focused on the seventeen most toxic congeners which have chlorine atoms in positions 2, 3, 7 and 8 of the basic ring structure. All 17 of the congeners exert toxicity through the same mode of action as 2,3,7,8-TCDD (hereafter referred to as TCDD), which is the standard for evaluating risk posed by exposure to dioxins and furans. Van den Berg et al. (1998) assigned toxic equivalency factors (TEFs) to PCDDs, PCDFs and PCBs with dioxin-like toxicity. The TEF for an individual compound relates the toxic potency of that compound to the potency of TCDD, which has a value of 1. Van den berg et al. (1998) identified sets of potency factors for mammals/humans, fish and birds. The equivalent concentration of each congener was computed as the measured concentration times that congener's toxic equivalency factor using factors from Van Den Berg et al. (1998). The total concentration of PCDDs and PCDFs was computed as the 2,3,7.8-TCDD equivalent concentration (TEQ) by summing the equivalent concentrations of the individual PCDD/PCDF congeners. The TEFs for this investigation are presented as concentrations in soil, and as such are applicable only for evaluating risk associated with exposure via direct contact, specifically incidental ingestion of soil. D. Spatial analysis and presentation A grid approach was used for the sampling design, thereby supporting efforts to map the distribution of contaminants. Because contaminant levels in fill were expected to be heterogeneous, data were evaluated on a point-by-point basis. Analytical results were evaluated using minimum and maximum concentrations for initial screening. Results for contaminants with concentrations at levels of concern were evaluated using tables, graphs and figures showing concentrations measured in each sector’s composite sample.

E. Screening for waste characterization Whether soils required special consideration as hazardous waste was evaluated using California Total Threshold Limit Concentrations (TTLCs). Wet weight-based

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concentrations in mg/kg or parts per million (ppm) for inorganics and µg/kg or parts per billion (ppb) for organic contaminants in soil samples were compared with TTLCs used by the State of California to help determine if material should be characterized as hazardous waste (22 CCR Division 4.5, Chapter 11, Article 3, §66261.24). Fill characterized as hazardous would require special permitted disposal practices if removed for marsh restoration projects. Additional analyses would be required for disposal as well.

Table 4. Total Threshold Limit Concentrations (TTLCs) for hazardous waste characterization.

Analyte TTLC Metals (ppm as mg/kg ww)

Arsenic (As) 500 Barium (Ba) 10,000 Beryllium (Be) 75 Cadmium (Cd) 100 Chromium - hexavalent (Cr VI) 500 Chromium - trivalent (Cr III) 2500 Copper (Cu) 2500 Lead (Pb) 1000 Mercury (Hg) 20 Molybdenum (Mo) 3500 Nickel (Ni) 2000 Selenium (Se) 100 Thallium (Th) 700 Vanadium (V) 2400 Zinc (Zn) 5000

Organics (ppb as µg/kg ww) Aldrin 1,400 Chlordane 2,500 DDT, DDE, DDD 1,000 Dieldrin 8,000 2,3,7,8-TCDD (& TCDD-EQ) 10.0 Endrin 200 Heptachlor 4,700 Lindane (gamma BHC) 4,000 PCBs 50,000 Toxaphene 5,000

Fill area samples were not analyzed for contaminant levels that may leach into water under landfill conditions. Leachability is evaluated by measuring concentrations of contaminants released by a soil sample into water using standard Waste Extraction Tests (WET) and Toxicity Characteristic Leaching Procedures (TCLP). Samples from the fill were not analyzed for WET or TCLP. Absent WET or TCLP tests, total contaminant concentrations obtained with soils (as mg or µg/kg ww) can be compared to the STLC times 10 (as mg or µg/L) to determine if the STLCs may be exceeded (DTSC 2003). Soil samples with contaminant levels that do not exceed TTLCs but do exceed 10 x STLCs

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have the potential to be characterized as hazardous, pending results of tests for leachability under landfill conditions. The latter approach was used for this study, recognizing that WET and TCLP tests may be required in the future. F. Screening for risk A number of generic risk-based screening levels were available in 2006 when results of Phase I samples were evaluated for potential risk posed by contaminants at measured concentrations to ecological and human receptors. The fill material provides habitat, albeit degraded, for upper salt marsh and terrestrial biota. Ecological receptors that may be exposed to fill-related contaminants include terrestrial invertebrates, plant, avian and mammalian species. Human receptors were considered for this investigation as follow-up to earlier data analyses by P&D Environmental (2003). Human health risk-based screening levels are also helpful for evaluating potential risks to human from exposure under residential and industrial use scenarios. Human contact with the fill area is limited by topography and refuge-installed guardrails to limit foot traffic. The location and size of the fill area are such that trespasser activity is expected to be very limited to nonexistent. Human receptors that may be exposed to fill-related contaminants are primarily refuge personnel that conduct occasional, but routine, walkovers and refuse removal. Risk-based screening levels based on residential use exposure conditions are most conservative (protective) but are less applicable for current uses of the fill area than screening levels based on industrial use exposure conditions. In general, human health and ecological risk-based screening levels are derived using conservative assumptions, and as such provide measures of contaminant levels below which there is no concern and above which, further consideration may be indicated. To screen for human health risk, dry weight concentrations of contaminants measured in soils were compared with U.S, Environmental Protection Agency (EPA), Region 9 Preliminary Remediation Goals (PRGs; Tables 5a and 5b), 2004 update. The PRGs are risk-based screening concentrations intended to protect humans against adverse effects from exposures that may occur under residential or industrial use conditions. The PRGs for some compounds include values computed by the California Office of Environmental Health Hazard Assessment (OEHHA), using the same approach as the USEPA, but with different toxicity factors. The California OEHHA-derived values are listed on the PRG tables as “Cal modified.” The Cal modified values were used, when present. The residential PRGs are the most conservative of the PRGs and account for direct exposure through multiple routes by both children and adults. The industrial use PRG is for adult workers, for whom exposure is less intense and less frequent than may occur under residential conditions. Unless fill soils are planned for use in residential settings, the PRGs for industrial uses are more applicable here. The PRGs may be used to help guide decisions about the fate of the fill material, and both residential and industrial PRGs were used to give a range of potential levels of concern. However, it is important to note that the EPA specifically does not intend for PRGs to be used as (1) a stand-alone decision making tool, (2) a substitute for guidance for preparing baseline (site-specific) risk assessments, (3) a rule to determine if a waste is hazardous under the Resource Conservation and Recovery Act (RCRA), or (4) final cleanup or action levels for contaminated sites (EPA 2004b).

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To screen for ecological risks, dry weight concentrations of contaminants measured in soils were compared with EPA ecological soil screening levels (ECO-SSLs; Tables 5a and 5b). The ECO-SSLs are ecological risk-based soil screening levels derived in a standardized manner similar to that used for PRGs. The USEPA adopted a protocol for deriving ecological soil screening levels (ECO-SSLs) in 2000, and has since developed ECO-SSLs for 16 of the target analytes in this study. The ECO-SSLs are based on contaminant risks to soil microorganisms, soil invertebrates, plants, birds and mammals. Separate values were derived for each of the receptors for which data of adequate quantity and quality were available. The ECO-SSLs for invertebrates and plants are the means of concentrations that affect 10% to 20% of exposed organisms (10-20% effect levels), or are maximum acceptable concentrations computed from No Observed Effect Concentrations (NOECs) and Lowest Observed Effect Concentrations (LOECs). The ECO-SSLs for wildlife are calculated using literature-based toxicity reference values (TRVs), which are high-end No Observed Adverse Effect Levels (NOAELs as daily dose rate), combined with bioaccumulation factors for highly exposed forage and prey species. The ECO-SSLs were used preferentially over other currently available ecological risk-based screening levels. Most ECO-SSLs were in draft form in 2006, but were finalized in subsequent years. Other ecological screening levels are available for some of the contaminants lacking ECO-SSLs. The alternate screening levels are from compilations by U.S. EPA, Region 4 (EPA, R4 2001), Beyer (1990) and Friday (1998) of values from multiple sources, each with a different approach for selecting values. Because of the variable nature of their derivations, these screening levels were considered on a case-by-case basis, and are referenced in text pertaining to only a few specific analytes (e.g., PCBs). G. Screening for background Because metals are naturally occurring constituents of soils, data on metals were also compared with background concentrations for surface soils to help managers with decisions regarding the potential feasibility and effectiveness of remedial actions. Background may be defined as (1) concentrations that occur with minimal-to-no human influence, or (2) concentrations that would occur at a site, absent the influence of contaminant sources under investigation. The first definition is the one of interest in this analysis. Data on background concentrations are for surface soils only. Site-specific data on background metal concentrations were not collected for this study, partly because there are few locations in the vicinity where soils have escaped human disturbance as a result of agricultural and commercial/industrial activities. One site-specific reference station north of Lagoon Drive was sampled by P&D Environmental (2003), but this location may have fill material as well. In addition, data from large-scale studies and/or compilations for nation-wide application were used to identify ranges of concentrations that may be considered typical for undisturbed soils. The available data offer rough estimates at best of background concentrations, because soil characteristics are highly variable from region to region, state to state and even locale to locale. Data from Shaklette and Boerngen (1984) for surface soils from throughout the conterminous United States, specifically western states (USGS west), and from Bradford et al. (1996) for soils from California were used to evaluate concentrations of naturally occurring inorganic analytes in fill area samples (Table 6).

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Table 5a. Risk-based screening levels for organic analytes measured in composite soil samples

from F&G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR (µg/kg dry weight).

Human (2004 PRG)1 ECO-SSLs2

Res

iden

tial

indu

stria

l

plan

ts

inve

rts

bird

s

mam

mal

s

Organochlorines Aldrin 29 100 alpha BHC (HCH) 90 360 beta BHC (HCH) 320 1,300 gamma BHC (Lindane) 440 1,700 alpha chlordane 1,600 6,500 gamma chlordane 1,600 6,500 Chlorpyrifos 180,000 1,800,000 Dieldrin 30 110 22 4.9 endosulfan II 370,000 3,700,000 Endrin 18,000 180,000 HCB 300 1,100 Heptachlor 110 380 heptachlor epoxide 53 190 Mirex 270 960 tetrachlorobenzene 18,000 180,000 Toxaphene 440 1,600 DDT & metabolites 1,700 7,000 93 21 DDE 1,700 7,000 total PCBs 220 740 TCDD (& TCDD-TEQ) 0.0039 0.016 PAHs Naphthalene 1,7003 4,2003 Biphenyl 3,000,000 24,000,000 Acenaphthene 3,700,000 29,000,000 Fluorine 2,700,000 26,000,000 Phenanthrene Anthracene 22,000,000 105,000,000 Fluoranthene 2,300,000 22,000,000 Pyrene 2,300,000 29,000,000 Chrysene (CA modified) 3,8003 13,0003 benzo(a)anthracene 620 2,100 benzo(b)fluoranthene 620 2,100 benzo(k)fluoranthene 3803 1,3003 benzo(a)pyrene 62 210 Dibenz(a,h)anthracene 62 210 indeno(1,2,3-cd)pyrene 620 2,100 Total LPAH 29,000 100,000 Total HPAH 18,000 1,100 1. EPA 2004a 2. EPA 2007c (dieldrin), EPA 2007b (DDT and metabolites), EPA 2007f (PAHs) 3. California modified PRG derived by Office of Environmental Health Hazard Assessment (EPA 2004a)

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Table 5b. Risk-based screening levels for inorganic analytes measured in composite soil samples from F&G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR (mg/kg dry weight).

Analyte Human (2004 PRGs)1 ECO-SSLs2,3

Res

iden

tial

Indu

stria

l

Plan

ts

Inve

rtebr

ates

Bird

s

Mam

mal

s

Al 76,000 100,000 As 0.0624 0.2514 18 43 46 B 16,000 100,000 Ba 5,400 67,000 330 2000 Be 150 1,900 40 21 Cd 37 450 32 140 0.77 0.36

CrIII 100,000 100,000 26 34 CrVI 30 64 130

Cr 210 450 Cu 3,100 41,000 70 80 28 49 Fe 23,000 100,000

Hg (inorganic) 23 310 Mn 1,800 19,000 220 450 4,300 4,000 Mo 390 5,100 Ni 1,600 20,000 38 280 210 130 Pb 1504 800 120 1700 11 56 Se 390 5,100 0.52 4.1 1.2 0.63 Sr 47,000 100,000 V 78 1,000 7.8 280 Zn 23,000 310,000 160 120 46 79

1. EPA 2004a 2. ECO-SSLs available in 2006; EPA 2005a (arsenic), EPA 2005b (barium), EPA 2005c (beryllium), EPA

2005d (cadmium), EPA 2008 (chromium), EPA 2005e (lead), EPA 2005f (vanadium), 3. ECO-SSLs not available in 2006, but shown for reference; EPA 2007a (Copper), EPA 2007d

(Manganese), EPA 2007e (Nickel), EPA 2007g (Selenium), EPA 2007h (Zinc), EPA 2008 (chromium) 4. California modified PRG derived by Office of Environmental Health Hazard Assessment (EPA 2004a)

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Table 6. Concentrations of inorganic analytes in background soil samples from western

U.S., California, and in one site-specific reference* sample (mg/kg dry weight).

Element California USGS west Reference median 75th percentile geometric mean one sample

Al 75,000 83,000 58,000 - As 2.7 4.7 5.5 <3.0 B 17 26 23 - Ba 519 625 580 50 Be 1.27 1.53 0.68 <1.0 Cd 0.28 0.44 2.0 Cr 69 115 41 210 Cu 22 37 21 38 Fe 33,000 45,000 21,000 - Hg 0.19 0.34 0.046 <0.1 Mg 9,166 12,036 7,400 - Mn 590 809 380 - Mo 0.85 1.4 0.85 2.6 Ni 27 56 15 8.0 Pb 21 27 17 3.1 Se 0.015 0.05 0.23 <5.0 Sr 121 180 200 - V 94 134 70 20 Zn 153 170 55 38

* Sample from a site-specific reference area and not necessarily reflective of undisturbed conditions. 3.0 PHASE I - RESULTS AND DISCUSSION 3.1 History

A. Acquisition by FWS

The F&G Street Marsh is part of the Sweetwater Marsh Unit of the San Diego Bay NWR. This Unit was acquired by the USFWS in 1988 as part of a Stipulated Settlement Agreement that entailed transfer to USFWS of 35.5 acres from the State of California (specifically Caltrans) and 280.3 acres from the Santa Fe Land Improvement Company (USFWS 2006), now succeeded by Catellus Development Corporation. The total includes 178 acres that were previously required for mitigation (with all objectionable easements excluded), plus Gunpowder Point, the D Street Fill and the F&G Street Marsh. The last three parcels were referred to as Mitigation Leasehold Overlays. The Mitigation Leasehold Overlays, while managed by USFWS, were subject to a reserved lease for 20 years that allowed the Santa Fe Improvement Company to perform wildlife habitat enhancement on these areas for mitigation credits (USFWS 2006).

B. Fill area history Currently, undocumented fill covers an area of approximately 3.9 acres in the north east corner of F&G Marsh (e.g., Figure 2). The area is irregularly shaped and split into two sections by a north-south running channel that connects with creeks in the marsh and

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ultimately San Diego Bay. The area covered by fill on the east side of the channel is approximately 1.6 acres, and fill west of the channel occupies the remaining 2.3 acres. An aerial photo from 1964 (Figure 3) demonstrates that the F & G Street Marsh has essentially the same configuration as existed in 1859 (Figure 4), with the exception that the mouth of the inlet was redirected by shoreline development. In 1964, the marsh was bordered by agricultural fields on the east and the north and by commercial and industrial uses on the west and south. Marina Parkway, which currently runs along the west edge of the marsh, did not yet exist, nor did the fill area within the marsh. Undocumented fill was evident by 1970 (Figure 5), covering less than half of the area that is currently occupied by fill. Compared with current conditions (Figures 2a and 2b), only portions along Lagoon Drive on the north and east of the channel were occupied by fill in 1970. It is assumed that contaminants specific to sampling stations (and study sectors) east of the channel may be attributed to dumping between 1964 and 1970. Marina Parkway which was not present in 1964 is present in 1970. Marina Parkway connects Lagoon Drive on the north with G Street on the south, and in so doing crosses over the marsh inlet. In addition, structures associated with Goodrich Aerostructures industrial operations on the south side of the marsh appear to have expanded into upper marsh. The mouth of the creek is further redirected and constricted by either depositional material or fill that is occupied by the South Bay Boatyard. While the material in the fill area may be from many sources, both road and building construction that occurred between 1964 and 1970 are potential contributors. Another factor is the increased access to traffic, and opportunities for undocumented dumping, afforded by the Marina Parkway. While ash produced by a rubbish disposal site on Paradise Marsh (Davies Dump) was deposited on other marshes within the Sweetwater Marsh Unit of the San Diego Bay NWR (USFWS 2010), it does not appear to have been a source of fill on the F&G Street Marsh because the Davies Dump had ceased operations in 1950, well before the undocumented fill is first evident at F&G St. Marsh. By 1975 (Figure 6), the fill area grew to current proportions, due to additions on the west side of the channel. Qualitatively, land uses around the marsh were not changed. However, further development for the South Bay Boatyard is clearly evident. Among other things, the fill area in F&G Street Marsh may include soils and sediment relocated as part of construction for the South Bay Boatyard. A photograph from 1990 (Figure 7) indicates that the size of the area covered by fill had not changed since 1975, and it appears as it does today (Figures 2a and 2b). Land use around the marsh changed after 1990 (and before 1994), when Goodrich Aerostructures constructed additional facilities on agricultural fields bordering the east side of the marsh. Overall, historic photographs support reports by USFWS (2006) of land use patterns around F&G Street Marsh and provide a rough timeline for when dumping occurred (between 1964 and 1975). The appearance of fill corresponds with a period when there was both road construction and expansion of commercial (boatyard) and industrial operations adjacent to the south side of the marsh. The expansion of the area occupied by undocumented fill may be associated with both construction/development activities and random dumping afforded by increased access from the construction of Marina Blvd. It appears, however, that no new fill material has been placed at the site since 1975.

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22

Figure 3. F&G St. Marsh Sweetwater Marsh Unit, San

Diego Bay NWR in 1859 Figure 4. F&G St. Marsh Sweetwater Marsh Unit, San Diego

Bay NWR in 1964

From USFWS 2006. From Landiscor Aerial Information, San Diego CA (4/7/64 - AXN-IDO-180)

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23

Figure 5. F&G St. Marsh (outlined), Sweetwater Marsh Unit, San Diego Bay NWR in 1970

Figure 6. F&G St. Marsh (outlined), Sweetwater Marsh Unit, San Diego Bay NWR in 1975.

From Landiscor Aerial Information, San Diego CA (3/6/70 - 30140) From Landiscor Aerial Information, San Diego CA (7/31/75 - 5978)

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24

Figure 7. F&G St. Marsh, Sweetwater Marsh Unit, San Diego Bay NWR in 1990.

From Landiscor Aerial Information, San Diego CA (1/23/90 - 5090-17G)

3.2 Fill characteristics and depth Visual inspection of the fill area indicated that the fill is a combination of soil-like material and rubble, primarily concrete and asphalt. Other rubble includes wood beams and rebar in a few locations. In addition, what appeared to be blue-green paint splatters and particles were evident in some locations, both at the surface and mixed with subsurface material. No broken glass or miscellaneous wastes typical of burn ash sites, such as remnants of cans, batteries, etc. were encountered. The surface soil appeared coarse grained and sandy (red sand), but highly compacted. Surface material supported vegetation in some but not all spots. Subsurface material that was not rubble, appeared to be finer grained than surface soil and eventually transitioned from grey or red colored sandy material to dark, clayey organic material, which was presumed to be native marsh sediment. The fill material that was collected for chemical analyses was soil-like, in that it was unconsolidated, with textures ranging from predominantly sand and gravel in the top 12

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25

inches to a predominantly sandy clay mixture in subsurface soils (Table 7). Subsurface soil samples had higher silt and TOC content than surface samples.

Table 7. Parameters for composite soil samples from the F & G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR.

Sam

ple

ID

# of

sam

ples

in in

co

mpo

site

% m

oist

ure

% c

lay

% g

rave

l

% s

and

% s

ilt

% T

OC

Surface F&G03-S 2 3.6 2.2 15.7 54.4 27.8 1.05 F&G04-S 3 5.1 14.8 28.4 41.8 15 0.67 F&G05-S 3 3.57 12.2 25 41.2 21.5 0.35 F&G06-S 3 4.38 11.5 14.2 56.3 18 0.97 F&G07-S 4 3.26 10.2 14.3 60.3 15.2 0.35 F&G08-S 4 6.36 7.4 30.5 49.4 12.7 0.61 F&G09-S 4 3.64 8.6 23.5 53.9 14 0.82 F&G10-S 4 6.94 12.9 8.8 55 23.3 0.58 F&G11-S 4 5.48 9.6 17.1 58.8 14.6 1.27 F&G12-S 4 4.53 12.6 15.6 55 16.8 0.77 F&G13-S 4 3.02 8.2 22.9 54 15 1.27 F&G14-S 1 1.5 10.3 4.8 69.3 15.6 0.26 F&G15-S 2 4.17 7 13 65.8 14.2 1.13 F&G16-S 3 2.75 5.1 17 60 17.9 1.92 F&G17-S 1 4.29 7.5 30.1 50.8 11.6 0.63 F&G20-S 1 10.9 11.7 0 50.2 38.2 0.49

Subsurface

F&G03-D 1 15.95 16.7 7 47.5 28.8 1.49 F&G04-D 1 30.46 34.2 8 29.7 28.1 1.98 F&G05-D 2 3.56 13.1 19 53.3 14.6 0.96 F&G06-D 2 28.5 33.9 11.4 31 23.8 1.32 F&G07-D 3 12.04 21.2 8.3 49.7 20.7 0.72 F&G08-D 4 27.01 16.7 6.1 56.7 20.5 0.89 F&G09-D 4 17.43 7.8 26.1 44.5 21.6 0.36 F&G10-D 3 31.79 28.4 6.6 41.6 23.4 1.18 F&G11-D 2 30.06 28.7 18.1 35.6 17.7 1.86 F&G12-D 4 25.7 31.2 7.4 40.5 20.8 1.24 F&G13-D 4 16.01 6.3 36.8 42.3 14.6 0.29 F&G14-D 1 8.46 7.9 30.3 48.9 13 0.97 F&G15-D 2 30.4 28.6 31.1 26.8 13.5 1.55 F&G16-D 3 6.09 7 29.3 51.8 11.9 2.04 F&G17-D 1 14.52 6.5 18.6 55.9 18.9 0.31 F&G20-D 1 17.23 49.7 7.1 12.7 30.4 0.17

Surface soil samples were successfully collected at 47 stations, and subsurface soil samples were successfully collected at 38 stations (Figures 2a and 2b). A number of the cores used for subsurface soil samples required offsets due to refusal. Of the 47 cores

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26

started, 23 required offsets due to refusal at shallow depths. Of the 38 successful cores, 16 extended to discernible native material, 4 extended to 46 inches bgs without encountering clear signs of native material (no comments in field notes), and the remaining 18 extended to variable depths ranging from 20 to 44 inches (median = 30 inches) defined by depth at refusal. Refusal was attributable to chunks of asphalt, cement, or wood. Fill depths at stations where there was refusal are roughly quantified as “> depth of refusal (inches bgs).” Fill depths are shown in Figure 8, which includes approximations for cores where refusal was encountered. The latter provide a rough estimate of fill depth as well as an indication of where rubble and debris was encountered.

Figure 8. Depth of fill (inches) for successful cores (red), and cores limited by refusal (black) on the F&G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR.

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In the 16 cores where a specific fill depth could be ascertained, the depth of fill ranged from zero to 43 inches bgs, with a median of 31 inches bgs. Fill depth at 4 stations in sectors on the eastern side of the fill (13 and 17) were greater than 46 inches bgs. Fill depth was variable from one station to the next (Figure 8). Consequently, actual depths may need to be determined on a location-by-location basis when and where any future excavation is planned. 3.3 Contaminant levels in samples / contaminants of potential concern All results of chemical analyses performed on the Phase I composite samples are provided in Attachment A. Results are presented as dry weight-based concentrations, but can be converted to wet weight-based values using percent moisture, which is included in results tables. Wet weight-based concentrations are lower than corresponding dry weight-based values. Consequently, if dry weight-based concentrations are found to be below levels of concern, the wet weight-based concentrations are of even less concern. A. Comparison with hazardous waste criteria Wet weight-based concentrations are used for waste characterization. Initial comparisons of maximum wet weight-based contaminant levels with state TTLCs and 10 x STLCs indicate the lead and possibly chromium, zinc and nickel concentrations may be sufficiently elevated in at least one grid sector to characterize the soil in that sector as hazardous waste, and that further testing for leachability would be warranted (Table 8). The maximum lead concentration of 1,920 ppm ww clearly exceeded the respective TTLC, and the lower concentrations that were observed frequently exceeded the STLC-based value of 50 mg/kg ww (Attachment A). The maximum observed chromium concentration of 1,010 ppm ww is for total chromium, which could be as much as 100% Cr VI, and as such could exceed the TTLC for Cr VI, as well. The maximum zinc concentration of 2,470 ppm ww did not exceed the TTLC. However, the sample was a composite, so that the concentration in one or more of the individual samples contributing to that composite may be greater than the TTLC. Similarly, wet weight concentrations of lead in composite samples from sector #11 (563 mg/kg ww in subsurface soil and 380 mg/kg in surface soil) did not exceed the TTLC. But, it is possible that concentrations in individual samples contributing to the composite may exceed the 1,000 mg/kg ww TTLC. The maximum concentration of nickel, in the sample from Sector #16, did not exceed the TTLC, but it did exceed 200 mg/kg ww (= 10 x the STLC), which is a screening level based on the potential for leachability under landfill conditions. Very few of the 16 surface and 16 subsurface composite samples had contaminant levels that either exceeded or had the potential to exceed TTLCs (Table 8). Based on comparisons with TTLCs, it was concluded that lead, and potentially chromiumVI, zinc and nickel are present at levels that may trigger a hazardous waste designation in at least

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28

one sector of the fill area. Further consideration of the nature of the chromium, and the distribution of all four analytes was recommended for hazardous waste characterization.

Table 8. Maximum wet weight concentrations of analytes in composite samples from F& G St. Marsh fill area, Sweetwater Marsh Units, San Diego Bay NWR, and exceedances of State hazardous waste thresholds.

Analyte TTLC Maximum Concentration

Composite Samples > TTLC

Composite Samples Potentially > TTLC2

Metals (mg/kg wet weight) Arsenic (As) 500 6.00 0 Barium (Ba) 10,000 153 0 Beryllium (Be) 75 0.76 0 Cadmium (Cd) 100 1.70 0 Chromium (Cr VI) 500 10101 1 (#16 surface) 1 (#16 subsurface) Chromium (Cr III) 2,500 10101 0 1(#16) Copper (Cu) 2,500 181 0 Lead (Pb) 1,000 1,920 1 (#16) 2 (#11, #09) Mercury (Hg) 20 0.54 0 Molybdenum (Mo) 3,500 19 0 Nickel (Ni) 2,000 360 0 1 (#16)3 Selenium (Se) 100 4.30 0 Thallium (Th) 700 not done Vanadium (V) 2,400 62 0 Zinc (Zn) 5,000 2,470 0 1 (#16) Organics (µg/kg wet weight) Aldrin 1,400 0.464 0 Chlordane 2,500 245 (total) 0 DDT, DDE, DDD 1,000 786 (total) 0 Dieldrin 8,000 13.1 0 2,3,7,8-TCDD (& TEQ) 10 0.0020 / 0.02295 (TCDD) / (TEQ) 0 Endrin 200 5.56 0 Heptachlor 4,700 1.97 0 Lindane (gamma BHC) 4,000 0.500 0 PCBs 50,000 2,650 0 Toxaphene 5,000 <0.710 0 1. Samples were analyzed for total chromium which could be up to 100% Cr III or up to 100% Cr VI. 2. Concentrations in composites do not exceed TTLCs, but are high enough that individual samples

contributing to the composite may have exceedances. 3. Based on comparison with 10 x STLC

B. Comparison with risk-based screening levels and background Dry-weight based contaminant concentrations measured in composite surface and subsurface soil samples are summarized in Tables 9 - 11. Only concentration ranges and detection limits are shown, mainly because maximum concentrations are the values of greatest interest for screening purposes.

OU3 0934

29

Maximum concentrations of very few target analytes exceeded human health risk-based screening levels. These include three metals (arsenic, lead, and possibly chromium), two organochlorine compounds (total PCBs and TCDD-TEQ), and one individual PAH compound (Benzo(a)pyrene). Maximum concentrations of these analytes exceeded screening levels for the most conservative (residential) scenario and, in some cases, a less conservative (industrial) exposure scenarios. However, while maximum arsenic concentrations exceeded human health risk-based screening levels, they were close to average for uncontaminated reference soils in California. Maximum concentrations of total chromium exceeded the risk-based guidelines, but only if the chromium is in the chromium VI form, which was not measured in the Phase I study. Concentrations of TCDD alone did not exceed any guidelines, and indeed, TCDD was only rarely detected. The TCDD-TEQ concentrations, however, did exceed screening levels, due mostly to the presence of the more heavily chlorinated congeners (heptachloro- and octachloro-PCDDs and PCDFs) typical of mixtures for soils in urban and rural areas influenced only by common area-wide combustion-related sources, such as wood smoke (Birmingham 1990). The frequency of detection and maximum detected concentrations for TCDD alone are consistent with what is observed at sites in urban and rural areas with no known sources of TCDD contamination (ATSDR 1998). Benzo(a)pyrene (BaP), the only PAH that exceeded a human health risk-based screening level, had a maximum concentration that exceeded the most conservative (residential) screening level only. Based on comparisons with the 2004 PRGs, particularly those for industrial use, and with reference soil concentrations, it is concluded that the nature and distribution of chromium, lead, PCBs, TCDD-TEQs and BaP warrant further consideration with respect to cleanup for parts of the fill area at least. Maximum concentrations of several metals (cadmium, chromium, copper, manganese, nickel, lead, selenium, vanadium and zinc) exceeded ecological screening levels (ECO-SSLs) for the most sensitive receptors. Concentrations of manganese and vanadium were below the median for reference soils in California, while maximum concentrations of the others were above background concentrations. Maximum concentrations of arsenic, beryllium and cadmium in fill area material are comparable to concentrations measured in one site-specific reference sample (Table 6), and as such may be typical for soils in the F&G Marsh area in general. Concentrations of metals that exceed risk-based screening levels, but are typical for background or reference conditions, may pose some risk to receptors that are not readily eliminated by remediation, and are considered unavoidable. In addition to several metals, maximum concentrations of DDT exceeded screening levels for birds and mammals, and maximum concentrations of dieldrin and HPAHs exceeded screening levels for most sensitive receptors (mammals).

OU3 0935

30

Table 9. Concentrations of inorganic analytes in composite samples from F & G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR, compared with screening levels and reference soils for California (mg/kg dry weight). Exceeded screening levels are highlighted (bold).

Results- Surface Results-Subsurface 2004 PRGs ECO-SSL CA background

Ana

lyte

Min

Max

dete

cts

16 m

ax

Min

Max

dete

cts

16 m

ax

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

Med

ian

Upp

er 7

5th

Al 5,510 32,800 16 12,200 24,300 16 76,000 100,000 75,000 83,000 As 2.3 6.3 16 2.70 8.30 16 0.062 0.251 18 43 46 2.7 4.7 B <10.0 32.0 14 <10.0 62 15 16,000 100,000 17 26 Ba 69.2 172 16 23.0 121 16 5,400 67,000 330 2000 519 625 Be 0.300 0.790 16 <0.200 0.720 15 150 1,900 40 21 1.27 1.53 Cd <0.200 1.70 13 <0.200 2.00 15 37 450 32 140 0.77 0.36 0.28 0.44 Cr 21.0 1,040 16 6.20 307 16 100,000 100,000 26 34 69 115 Cr VI* 30 64 130 Cu 11.0 175 16 4.30 195 16 3,000 41,000 70 80 28 49 22 37 Fe 13,400 26,200 16 5,560 30,800 16 23,000 100,000 33,000 45,000 Hg <0.100 0.560 2 <0.100 0.410 2 18 310 0.19 0.34 Mg 3,270 8,840 16 1,630 8,680 16 9,166 12,036 Mn 130 513 16 150 597 16 1,800 19,000 220 450 4,300 4,000 590 809 Mo <5.00 19.0 1 <5.00 7.00 1 380 5,100 0.85 1.4 Ni 10.0 370 16 <5.00 100 15 1,600 20,000 38 280 210 130 27 56 Pb 18.0 1,980 16 10.0 681 16 150 800 120 1,700 11 56 21 27 Se <0.500 4.40 1 <0.500 4.30 2 390 5,100 0.52 4.1 1.2 0.63 0.015 0.05 Sr 21.0 243 16 6.40 83.0 16 47,000 100,000 121 180 V 32.0 70.0 16 12.0 66.0 16 78 1,000 7.8 280 94 134 Zn 31.0 1,110 16 19.0 2,660 16 23,000 310,000 160 120 46 79 153 170 * samples analyzed for total Cr only. Screening levels would be exceeded if 100% of the Cr is Cr VI.

OU3 0936

31

Table 10. Concentrations of organochlorine compounds in composite samples from F & G St. Marsh fill area, Sweetwater Marsh

Unit, San Diego Bay NWR, compared with screening levels (µg/kg dry weight). Exceeded screening levels are highlighted (bold).

Results Surface Results subsurface 2004 PRGs ECO-SSL

Ana

lyte

Min

Max

Det

ects

(o

ut o

f 16)

M

in

Max

Det

ects

(o

ut o

f 16)

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

Aldrin <0.122 0.452 2 <0.124 0.543 8 29 100 BHC-alpha <0.122 <0.112 0 <0.134 0.750 2 90 360 BHC-beta <0.122 0.171 1 <0.124 0.359 1 320 1,300 BHC-delta <0.122 <0.138 0 <0.124 <0.192 0 BHC-gamma (Lindane) <0.122 <0.138 0 <0.122 0.532 3 440 1,700 Chlordane-alpha <0.126 76.5 15 0.361 60.3 16 1,600 6,500 Chlordane-gamma 0.126 95.2 16 0.646 78.3 16 1,600 6,500 Nonachlor-cis 0.262 26.5 16 <0.174 22.4 15 nonachlor-trans <0.126 58.0 15 0.430 45.8 16 Oxychlordane <0.122 2.57 10 <0.124 5.82 4 ∑ Chlordanes 0.206 0.771 16 0.255 12.14 16 o,p'-DDD <0.126 11.8 15 0.412 217 16 p,p'-DDD 0.195 30.6 16 0.621 564 16 o,p'-DDE <0.122 2.54 12 <0.134 17.6 8 p,p'-DDE <0.126 96.2 15 0.718 103 16 1,700 7,000 o,p'-DDT 0.550 27.9 16 <0.186 9.42 15 p,p'-DDT 0.446 143 16 0.610 38.4 16 ∑ DDTs 1.38 294 16 3.79 935 16 1,700 7,000 93 21 Dieldrin <0.126 13.9 14 <0.124 11.1 13 30 110 22 4.9 Endosulfan II <0.122 3.52 10 <0.134 1.17 3 370,000 3,700,000 Endrin <0.122 5.81 12 <0.134 2.02 4 18,000 180,000 HCB <0.122 1.59 7 <0.124 8.07 3 300 1,100 Heptachlor <0.126 1.68 12 <0.124 3.29 5 110 380

OU3 0937

32

Table 10. Concentrations of organochlorine compounds in composite samples from F & G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR, compared with screening levels (µg/kg dry weight). Exceeded screening levels are highlighted (bold).

Results Surface Results subsurface 2004 PRGs ECO-SSL

Ana

lyte

Min

Max

Det

ects

(o

ut o

f 16)

M

in

Max

Det

ects

(o

ut o

f 16)

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

Heptachlor epoxide <0.126 2.09 13 <0.134 1.03 8 53 190 Mirex <0.122 0.360 6 <0.124 0.545 2 270 960 PCB-TOTAL 16.7 2,730 16 14.6 627 16 220 740 Pentachloro-anisole <0.122 1.14 4 <0.124 38.7 3 TCB-1,2,3,4 0.061 0.452 2 <0.134 3.95 3 18,000 180,000 TCB-1,2,4,5 0.063 0.709 13 <0.124 8.19 12 18,000 180,000 Toxaphene <1.21 <1.38 0 <0.164 <1.92 0 440 1,600 Chlorpyrifos 0.061 0.862 9 0.067 1.67 4 180,000 1,800,000 1,2,3,4-Tetrachlorobenzene <0.122 0.452 2 <0.134 3.95 3 18,000 180,000 1,2,4,5-Tetrachlorobenzene <0.126 0.709 13 <0.124 1.89 12 18,000 180,000 2,3,7,8-TCDD <0.00036 0.00206 1 <0.00030 0.00179 2 0.0039 0.016 1,2,3,7,8-PeCDD <0.00176 <0.00254 0 <0.00146 0.00381 1 1,2,3,4,7,8-HxCDD <0.00176 0.00267 1 <0.00146 0.00141 0 1,2,3,6,7,8-HxCDD <0.00176 0.01180 5 <0.00146 0.02400 6 1,2,3,7,8,9-HxCDD <0.00176 0.01180 3 <0.00146 0.01110 7 1,2,3,4,6,7,8-HpCDD 0.00589 0.36200 16 0.01550 0.41400 16 OCDD 0.04560 2.90000 16 0.06290 4.43000 16 2,3,7,8-TCDF <0.00036 0.01370 6 <0.00030 0.01680 10 1,2,3,7,8-PeCDF <0.00176 0.00525 3 <0.00146 0.02490 5 2,3,4,7,8-PeCDF <0.00176 0.00603 3 <0.00146 0.00833 3 1,2,3,4,7,8-HxCDF <0.00176 0.00926 2 <0.00146 0.01420 5 1,2,3,6,7,8-HxCDF <0.00176 0.00890 3 <0.00146 0.01270 2

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33

Table 10. Concentrations of organochlorine compounds in composite samples from F & G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR, compared with screening levels (µg/kg dry weight). Exceeded screening levels are highlighted (bold).

Results Surface Results subsurface 2004 PRGs ECO-SSL

Ana

lyte

Min

Max

Det

ects

(o

ut o

f 16)

M

in

Max

Det

ects

(o

ut o

f 16)

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

1,2,3,7,8,9-HxCDF <0.00176 <0.00252 0 <0.00146 0.00284 0 2,3,4,6,7,8-HxCDF <0.00176 0.02000 7 <0.00146 0.03330 6 1,2,3,4,6,7,8-HpCDF <0.00176 0.13800 11 <0.00148 0.10000 13 1,2,3,4,7,8,9-HpCDF <0.00176 0.01080 1 <0.00146 0.00958 4 OCDF <0.00352 0.37900 11 <0.00256 0.11000 13 TCDD-TEQ 0.00244 0.01451 0.00219 0.02732 0.0039 0.016

Table 11. Concentrations of PAH parent compounds and homologs in composite samples from F & G St. Marsh fill area, Sweetwater

Marsh Unit, San Diego Bay NWR, and screening levels (µg/kg dry weight). Exceeded screening levels are highlighted (bold). Results Surface Results subsurface 2004 PRGs ECO-SSLs

Ana

lyte

Min

Max

dete

cts

16 m

ax

Min

Max

dete

cts

16 m

ax

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

Naphthalene <1.51 29.3 14 <1.78 33.5 14 1,700 4,200 1-methylnaphthalene <1.45 10.6 9 <1.60 53.4 9 2-methylnaphthalene 1.50 15.5 12 <1.60 47.0 11 2,6-dimethylnaphthalene <1.45 11.0 8 <1.60 102 9 1,6,7-Trimethyl-naphthalene <1.45 15.8 4 <1.60 183 11 C1-naphthalenes <1.51 26.0 14 <1.78 100 13

OU3 0939

34

Table 11. Concentrations of PAH parent compounds and homologs in composite samples from F & G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR, and screening levels (µg/kg dry weight). Exceeded screening levels are highlighted (bold).

Results Surface Results subsurface 2004 PRGs ECO-SSLs A

naly

te

Min

Max

dete

cts

16 m

ax

Min

Max

dete

cts

16 m

ax

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

C2-naphthalenes <1.46 32.7 12 <1.79 305 12 C3-naphthalenes <1.46 69.2 13 <1.79 531 13 C4-naphthalenes <1.46 59.5 13 <1.79 487 12 Biphenyl <1.45 3.49 5 <1.48 5.70 3 3,000,000 24,000,000 Acenaphthalene <1.46 8.31 12 <1.69 70.6 8 Acenaphthene <1.45 14.1 8 <1.60 16.0 5 3,700,000 29,000,000 Fluorine <1.45 11.7 10 <1.60 56.5 10 2,700,000 26,000,000 C1-fluorenes <1.51 84.2 15 <1.79 182 13 C2-fluorenes <1.51 210 14 <1.79 258 13 C3-fluorenes <1.51 321 15 <1.60 235 14 Phenanthrene <1.51 179 15 2.13 187 16 1-methylphenanthrene <1.46 48.3 13 <1.78 45.7 12 Anthracene <1.46 46.5 13 <2.09 150 15 22,000,000 105,000,000 C1-Phenanthrenes & Anthracenes <1.51 189 15 <2.09 151 15 C2-Phenanthrenes & Anthracenes <1.51 255 15 <2.09 213 15 C3-Phenanthrenes & Anthracenes <1.51 224 14 2.30 233 16 C4-Phenanthrenes & Anthracenes <1.51 94.5 15 <1.79 187 14 ∑LPAH (2 & 3 rings) 17 1,795 16 30 3,275 16 29,000 100,000 Fluoranthene 2.44 369 16 2.73 337 16 2,300,000 22,000,000 Pyrene 2.64 358 16 4.65 610 16 2,300,000 29,000,000 C1-Fluoranthenes & Pyrenes <1.51 132 15 3.18 382 16 Chrysene 1.61 128 16 3.42 313 16 3,800 13,000 C1-chrysenes <1.51 80.2 15 2.39 510 16 C2-chrysenes 2.09 86.8 16 3.29 454 16

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35

Table 11. Concentrations of PAH parent compounds and homologs in composite samples from F & G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR, and screening levels (µg/kg dry weight). Exceeded screening levels are highlighted (bold).

Results Surface Results subsurface 2004 PRGs ECO-SSLs A

naly

te

Min

Max

dete

cts

16 m

ax

Min

Max

dete

cts

16 m

ax

Res

iden

tial

Indu

stria

l

plan

ts

Inve

rts

Bird

s

Mam

mal

s

C3-chrysenes <1.51 42.5 14 <2.09 185 15 C4-chrysenes <1.51 14.3 14 <1.79 50 13 Benzo(a)anthracene <1.51 106 15 <2.09 162 15 620 2,100 benzo(b)fluoranthene 2.38 157 16 5.18 224 16 620 2,100 benzo(k)fluoranthene <1.51 43.2 15 <1.78 66.0 13 380 1,300 benzo(a)pyrene 1.66 150 16 4.06 188 16 62 210 benzo(e)pyrene <1.51 93.8 15 3.86 132 16 Perylene 2.02 125 16 5.47 242 16 Dibenz(a,h)anthracene <1.46 23.5 13 <1.60 20.2 13 62 210 indeno(1,2,3-cd)pyrene 1.60 97.9 16 2.18 84.8 16 620 2,100 benzo(g,h,i)perylene 1.68 96.2 16 3.18 95.1 16 Dibenzothiophene <1.45 6.75 9 <1.60 21.2 8 C1-dibenzothiophenes <1.45 32.1 11 <1.79 59.1 12 C2-dibenzothiophenes <1.46 69.1 13 <1.79 96.7 13 C3-dibenzothiophenes <1.46 62.9 13 <1.79 93.1 12 ∑HPAH 27 2,004 16 60 3,423 16 18,000 1,100 total PAH (LPAH + HPAH) 45 2,627 16 90 4,950 16

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C. Contaminants of potential concern (COPCs) Based on comparisons with generic human health and ecological risk-based screening levels (ECO-SSLs), and with reference soil concentrations, it was concluded that the nature and distribution of copper, cadmium, chromium, lead, nickel, selenium, zinc, DDT, dieldrin and HPAHs may require further consideration for parts of the fill area, relative to potential for restoring fish and wildlife habitats. Contaminants of potential concern (COPCs) identified as a result of comparisons with hazardous waste and risk-based screening levels are summarized in Table 12.

Table 12. Contaminants of Potential Concern (COPCs) based on screening level exceedances or potential exceedances (including leachability) for F&G St. Marsh fill area, Sweetwater Marsh Unit, San Diego Bay NWR.

Hazardous waste Human health risk Ecological risk Chromium Lead Zinc Nickel

Chromium Lead PCBs TCDD-TEQ BaP (an HPAH)

Cadmium Selenium Chromium Zinc Copper DDT Lead Dieldrin Nickel HPAHs

Concentrations of LPAHs did not exceed screening levels, and as such are not COPCs. However, LPAH concentrations in one sample indicate the presence of material from a petrogenic source (discussed below). While LPAHs are not COPCs, they are of interest as indicators of source material where higher PAH concentrations are encountered. 3.4 Areas of concern The COPCs were identified based on comparisons between maximum observed concentrations and various screening levels. Maximum concentrations represent the worst case for the samples that were collected. When results from all of the composite samples are plotted as a function of the sector represented by each sample, it is evident that the concentrations of chromium, lead, zinc and nickel are all highest in the surface and/or subsurface composite sample from Sector #16, followed by the composite sample from Sector #11 (Figure 9). The same is indicated for other inorganic COPCs, with the exception of cadmium which was highest in samples from sectors bordering a roadway (Sectors #03 and #04; Figure 3) (Table 13). The surface and subsurface composite samples from Sector #16 also had maximum concentrations (or the only detected concentrations) of mercury, molybdenum and strontium (Attachment A). Samples from Sector #16 were the only samples where concentrations of chromium, lead and zinc exceeded TTLCs, and where nickel may exceed the STLC. Concentrations of lead in samples from several sectors exceeded the 10 x STLC screening value of 50 mg/kg ww, indicating a potential for characterization as hazardous waste, due to lead concentrations encountered throughout the fill area. Additional testing for leachability would be required to determine if the soils with concentrations between 50 mg/kg ww (10 x STLC) and 1,000 mg/kg ww (TTLC) would actually be classified as hazardous if taken off site.

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Figure 9. Concentrations of chromium, lead and zinc measured in composite

surface (a) and subsurface (b) soil samples representing sectors from F&G Street Marsh fill area.

(a)

(b)

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Table 13. Concentrations of cadmium, copper, nickel, and selenium (mg/kg

dw) in composite surface and subsurface soil samples representing sectors from F&G St. Marsh fill area. Maximum concentrations are highlighted (bold).

com

posi

te

sam

ple

#

Cd

Cu

Ni

Se

com

posi

te

sam

ple

#

Cd

Cu

Ni

Se

surface Subsurface F&G03-S 0.300 21.0 10.0 <0.500 F&G03-D 1.10 27.0 15.0 <0.500F&G04-S 0.400 28.0 10.0 <0.500 F&G04-D 2.00 19.0 30.0 0.70 F&G05-S 0.400 18.0 23.0 <0.500 F&G05-D 0.500 26.0 10.0 <0.500F&G06-S 0.500 64.0 26.0 <0.500 F&G06-D 0.74 22.0 16.0 <0.500F&G07-S <0.2 11.0 30.0 <0.500 F&G07-D 0.500 17.0 16.0 <0.500F&G08-S 0.200 25.0 15.0 <0.500 F&G08-D 0.88 28.0 22.0 <0.500F&G09-S <0.2 20.0 19.0 <0.500 F&G09-D 0.300 16.0 10.0 <0.500F&G10-S 0.400 20.0 23.0 <0.500 F&G10-D 0.400 15.0 24.0 <0.500F&G11-S 0.400 32.0 18.0 <0.500 F&G11-D 0.930 38.0 18.0 <0.500F&G12-S <0.2 31.0 21.0 <0.500 F&G12-D 0.750 25.0 20.0 <0.500F&G13-S 0.300 28.0 18.0 <0.500 F&G13-D 0.200 16.0 10.0 <0.500F&G14-S 0.500 11.0 10.0 <0.500 F&G14-D 0.300 14.0 10.0 <0.500F&G15-S 0.400 21.0 32.0 <0.500 F&G15-D 0.7 21.0 18.0 <0.500F&G16-S 1.70 175 370 4.40 F&G16-D 0.500 195 100 4.30 F&G17-S 0.200 15.0 10.0 <0.500 F&G17-D 0.400 21.0 10.0 <0.500F&G20-S 0.76 23.0 10.0 <0.500 F&G20-D <0.2 4.30 <5.00 <0.500

One feature of the fill area is that sections are devoid of vegetation. While maximum concentrations of copper, manganese, nickel, lead, selenium and zinc exceeded risk-based screening levels for plants, there appears to be no correlation between the distribution of those elements and the occurrence of vegetation; sectors lacking vegetation (03, 07 and parts of 11 and 12) did not necessarily have the higher concentrations of contaminants, whereas some sectors with metals exceeding screening levels (most notably 16) did have vegetation (figure 9 and Table 13). The absence of vegetation may be due to factors that were not evaluated, such as soil compaction, pH and salinity. Alternatively, it may be due to contaminants that were measured but for which there are no data on levels that are toxic to plants. Highest concentrations of organic COPCs tended to be in the same composite samples (sectors) as those for the inorganic COPCs (Sectors 03, 04, 11 and 16: Figures 9 and 10). Similar to lead, total PCB concentrations were high in samples from Sectors 16 and 11, and also in surface soil from Sector 06. The pesticides dieldrin and DDTs were both high in subsurface soils from one sector bordering Lagoon Drive (Sector 03), although dieldrin tended to be more broadly distributed, with the highest concentrations in soils from Sector 11. The higher levels of BaP, which is a HPAH, occurred in soils from sectors 03, 10 and 11. The same was observed with HPAHs in general.

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Figure 10a. Concentrations of organic COPCs measured in composite surface and subsurface soil samples representing sectors from F&G

Street Marsh fill area.

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Figure 10b. Concentrations of PAHs measured in composite surface and subsurface soil samples representing sectors from F&G Street

Marsh fill area.

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Concentrations of LPAHs indicate the presence of material from a petrogenic source in the subsurface sample from Sector #08, and what appeared to be weathered waste oil was encountered in the subsurface soil sample from station number 8ne (Figure 2). Unfortunately, samples were not analyzed for total recoverable petroleum hydrocarbons. However major sources of PAHs (i.e., petrogenic, combustion-related or biogenic) can be tentatively identified by relative contributions of specific PAHs to the total PAH mixture (Hellou 1996; Peng et al. 2008). The presence of un-combusted oil is suggested by significant contributions of LPAH compounds to TPAH. The subsurface soil sample from Sector #08 had the highest LPAH concentration (3,275 µg/kg; Figure 10) and unlike all of the other samples, the total PAH mixture in that sample was dominated (~44%) by LPAHs, specifically naphthalenes. The predominance of naphthalenes combined with other features including minor contributions of biogenic perylene, indicate that the PAHs in the composite subsurface sample from Sector #08 reflects contributions from a petrogenic source, such as uncombusted waste oil. Total PAH concentrations in composites from all of the other sectors were dominated by HPAHs, specifically by fluoranthene and pyrene or chrysene and perylene. Consequently, PAHs from all sectors other than Sector #08 appeared to be from combustion and or biogenic (plants) sources. There is no general pattern in the vertical distribution of contaminants (e.g., Figures 9 and 10 and Tables 9-11). Depending on the contaminant and the location, the concentration may be higher in subsurface soils than at the surface (suggesting buried material) or the other way around (suggesting recent deposits). Consequently, generalizations about whether concern should be focused on surface soil or subsurface soil are not possible at this time. 4.0 PHASE I - CONCLUSIONS AND RECOMMENDATIONS Sampling conducted for the Phase I investigation provided information on the history and general nature of undocumented fill in F&G Street Marsh. Conclusions and recommendations relating to history and nature are provided with conclusions for the study as a whole at the end of this report. Results of chemical analyses indicated that contaminants are present at levels of concern in localized portions of the F & G St. Marsh fill area. Composite soil samples from a fraction of sectors had high levels of selected metals and lower, but above risk-based levels of PCBs, two organochlorine pesticides (DDTs and dieldrin) and HPAHs (including BaP). Additional analyses are warranted for selected individual samples collected and archived as part of the Phase I study. Specifically:

1. The composite sample from one sector (#16) had lead and total chromium levels that exceeded TTLCs for lead and chromiumVI, respectively. Samples were analyzed for total chromium only, so that absent confirmation, the chromium in the sample from Sector 16 was assumed to be ChromiunVI.

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Recommendation: Analyze individual archived samples from Sector #16 and neighboring stations for metals, and for chromium VI to better delineate the lead concentrations and to determine the fraction of total chromium concentrations that can be attributed to chromium VI.

2. Concentrations of lead in composite samples from two sectors (#11 and #09) and zinc in the samples from one sector (#16) were below TTLCs, but may exceed TTLCs in individual samples that contributed to the composites Recommendation: Analyze individual archived samples from Sectors #09, #11 and #16 for metals (chromium VI included) to determine if lead and zinc concentrations in any individual samples exceed TTLCs, and to better delineate concentrations of those metals.

3. Cadmium, certain pesticides (most notably DDT), and dioxins and furans exhibited

highest concentrations, and exceeded risk-based screening levels, in composite samples from sectors adjacent to Lagoon Road (#03 and #04). Recommendation: To more precisely delineate the affected area and better evaluate risks, analyze selected individual archived samples from around sectors 03 and 04 for metals, organochlorine pesticides and dioxins/furans.

4. Composite soil samples from certain sectors had concentrations of PCBs and/or PAHs that exceed conservative risk-based screening levels. The composite sample from Sector #16 stands out as the most contaminated of all the samples for several metals and PCBs. While hazardous waste criteria are not exceeded, elevated levels of these contaminants may affect management actions (e.g., cleanup) and pose risks to ecological receptors, particularly if the area is considered for habitat restoration. Recommendation: More precisely delineate the affected areas and better evaluate risks, analyze individual archived samples from within and around Sectors #03, #06, #08, #10, #11 and #16 for PAHs and PCBs.

5.0 PHASE II - METHODS 5.1 Selection of samples and target analytes In accordance with recommendations from Phase I, individual archived samples collected during the Phase I study were selected for additional chemical analyses. A total of 47 individual surface soil samples and 38 individual subsurface samples were collected during the field component of the Phase I study. To control costs, not all samples were selected for additional analyses, and of those selected, not all were analyzed for all of the target analytes. Some individual samples, those for which there was one sample per sector, were analyzed as part of the Phase I study. Archived samples were selected based on proximity to sectors where contaminant levels exceeded or might exceed hazardous waste thresholds

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and/or exceeded risk-based screening levels. The emphasis was on sectors and analytes potentially driving hazardous waste characterization. A total of 54 archived individual samples were submitted for follow-up chemical analyses, as determined from results of analyses for Phase I (Table 14). In August 2006, 30 archived surface soil samples and 24 archived subsurface soil samples were shipped to ACF designated laboratories, under catalog numbers 1040074 and 1040075. All samples were to be analyzed for moisture content, TOC, grain size, metals, and chromium VI. Subsets of samples were also analyzed for PAHs, PCDDs/PCDFs, organochlorine scan (including PCBs as aroclors), and PCBs as individual congeners and as homolog classes. Target analyte lists were the same as for Phase I with two additions. Chromium VI was included to determine its contribution to total chromium concentrations measured in Phase I samples. It is recognized that the archived soil samples had been held in a freezer for nearly two years, which exceeds desired holding times for measuring chromium VI. However, chromium VI is much more stable in frozen soil samples than in water, which is the basis for established holding times (EPA 2005). In addition, samples were analyzed for total chromium, and concentrations of total chromium do not change with time. Consequently, if there is any uncertainty, the measured concentration of total chromium in a sample provides an upper limit on the chromium VI concentration that existed two years earlier. PCB congener and homolog (PCB scans) analyses were requested for some samples. The PCBs constitute a family of 209 individual compounds (congeners) that belong in one of 10 homolog classes, defined by the number of chlorines present on the molecule (Cl1, Cl2, Cl3, etc.). Historically, concentrations of PCBs were quantified using mixtures (Aroclors) as the standard. While the organochlorine scan used in Phase I provides a measure of the total PCB concentration as an aroclor mixture, additional analyses for individual congeners (96 of 209 possible), and homolog classes allow a more in depth evaluation of potential sources and risk posed by this class of compounds in the soils. Of specific interest were the PCB congeners that contribute to TCDD-TEQ concentrations due to their dioxin-like toxicity. 5.2 Chemical analyses Archived samples for Phase II of the study were analyzed for organic contaminants, TOC and grain size by Geochemical and Environmental Research Group (GERG) in College Station, Texas. Analyses for metals were conducted by Research Triangle Institute (RTI) in Research Triangle Park, North Carolina. Analytical methods were the same as for Phase I samples, with additional methods for Cr VI and PCB congeners and homologs. For chromium, the chromium VI was separated from other anions and cations by ion chromatography followed by post column reaction with diphenyl carbazide. The complex was then measured colorimetrically at 530 nm. The reported detection limit for chromium VI was 2.0 mg/kg dry weight.

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The PCB congeners and homologs were extracted using the same methods as were used for organochlorine compounds in the Phase I study. Concentrations of 96 congeners and 10 homolog classes were quantified using HRGC/HRMS in SIM mode. The reported detection limits for PCB congeners and homologs, respectively were 0.040 µg/kg dry weight and 4.10 µg/kg dry weight. Laboratories used analytical methods and followed quality assurance (QA) and quality control (QC) protocols in accordance with requirements by ACF. A rigorous program of methods standardization and QA/QC assessment is maintained by ACF for all contract laboratories. Procedural blanks, duplicates, spiked samples, and analysis of standard reference materials were used routinely with each batch of samples to evaluate and maintain QA/QC. Once available, analytical results were reviewed at ACF to determine that QA/QC procedures had been followed and conditions specified in the contract were satisfied. Anomalies identified during the QA/QC process are noted in the QA/QC report provided by ACF. Analyses for organic analytes met QA/QC requirements, with some exceptions. In most cases, spikes were not used for all of the more than 300 target analytes, limits of detection for some analytes were not within limits required by ACF, and in a few cases, spike recoveries were either higher or lower than normal. The only reported QA/QC anomaly that had a significant effect on how results are interpreted was the occurrence of interfering non-target organics that resulted in exceptionally high reported concentrations for PCB congeners #1, #25, #41/64, #45, #48, #52, #175, and #209. Initially, analyses for chromium VI did not meet ACF QA/QC requirements and, after some time delays, the samples were reanalyzed for Cr VI. Ultimately, analyses for all of the inorganic analytes met QA/QC requirements.

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Table 14. Individual samples and target analytes selected for Phase II characterization of contaminants in fill from F&G St. Marsh

Surface Subsurface Sa

mpl

e N

o.

PCB

s - H

omol

ogs

PCB

s - A

rocl

or

PCB

s - C

onge

ners

Dio

xins

/fura

ns

Met

als

OC

pes

ticid

es

PAH

s

Sam

ple

No.

PCB

s - H

omol

ogs

PCB

s - A

rocl

or

PCB

s - C

onge

ners

Dio

xins

/fura

ns

Met

als

OC

pes

ticid

es

PAH

s

F&G04se-S √ F&G03-D* √ √ √ √ √ F&G05sw-S √ F&G04-D* √ √ √ √ √ F&G07ne-S √ √ √ √ √ √ F&G05sw-D √ F&G07se-S √ F&G07ne-D √ √ √ √ √ √ F&G07sw-S √ F&G07sw-D √ F&G08ne-S √ √ √ √ √ √ F&G08ne-D √ √ √ √ √ √ F&G08se-S √ F&G08se-D √ F&G09ne-S √ F&G09ne-D √ F&G09nw-S √ F&G09nw-D √ F&G09se-S √ F&G09se-D √ F&G09sw-S √ F&G09sw-D √ F&G10ne-S √ F&G10ne-D √ F&G10se-S √ F&G11se-D √ √ √ √ √ √ √ F&G11ne-S √ F&G11sw-D √ F&G11nw-S √ F&G12ne-D √ F&G11se-S √ √ √ √ √ √ √ F&G12nw-D √ F&G11sw-S √ F&G12se-D √ √ √ √ √ √ √ F&G12ne-S √ F&G12sw-D √ √ √ √ √ √ √ F&G12nw-S √ F&G13ne-D √ F&G12se-S √ √ √ √ √ √ √ F&G13nw-D √ F&G12sw-S √ √ √ √ √ √ √ F&G13sw-D √ F&G13ne-S √ F&G14-D* √ √ √ √ √ F&G13nw-S √ F&G15ne-D √ √ √ √ √ √ √ F&G13sw-S √ F&G15se-D √ √ √ √ √ √ √ F&G14-S* √ √ √ √ √ F&G16C-D √ √ √ √ √ √ √ F&G15ne-S √ √ √ √ √ √ √ F&G16nw-D √ √ √ √ √ √ √ F&G15nw-S √ F&G16sw-D √ √ √ √ √ √ √ F&G15se-S √ √ √ √ √ √ √ F&G17-D* √ √ √ √ √ F&G16C-S √ √ √ √ √ √ √ F&G20-D* √ √ √ √ √ F&G16nw-S √ √ √ √ √ √ √ F&G16sw-S √ √ √ √ √ √ √ F&G17-S* √ √ √ √ √ F&G20-S* √ √ √ √ √ * Individual samples analyzed as part of the Phase I study. Included because, while they represent an entire sector, they were not part of a composite sample and could therefore be used for mapping.

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5.3 Data analysis Results of chemical analyses were received in November 2007. Results obtained with the 54 individual samples analyzed in 2004 were combined with results obtained with 8 individual samples that were analyzed for Phase I (i.e., samples from sectors for which only one sample was collected; see Table 2). Once compiled, results obtained with individual samples were evaluated using the same approach as was applied for Phase I of the study, with some additions and updates, and an enhanced ability for mapping the distribution of contaminants in the fill area. A. Additions The concentration of total PCBs was determined three ways: 1) as the sum of the detected aroclors (also used in Phase I samples); 2) the sum of the homologs, using ½ the detection limit as a surrogate for non-detects; and, 3) the sum of the congeners using ½ the detection limit as a surrogate for non-detects. Large interferences by non-target analytes were reported in the QA/QC review for PCB congeners #1, #25, #41/64, #45, #48, #52, #175 and #209. The interference resulted in reported concentrations of the congeners in question that heavily biased the congener-based estimates of total PCB concentrations. Consequently, results obtained for the congeners in question are flagged in the data report (Attachement B), and were excluded in the analysis of the data on PCB congeners. Excluding the congeners with interference produced an estimate of total PCBs as the sum of the congeners, consistent with total PCB concentrations quantified as aroclors and as the sum of the homologs. Concentrations of PCB congeners with dioxin-like toxicity (primarily #77, #81, #126 and #169) were evaluated for contributions to TCDD-TEQs, using TEFs identified by Van den Berg et al. (1998) for dioxins and dioxin-like PCB congeners. Like PCDDs/PCDFs (Phase I), concentrations of the dioxin-like PCB congeners were converted to equivalent concentrations using TEFs identified by Van den Berg et al. (1998) for mammals/humans and birds. The equivalent concentrations for dioxin-like PCBs were summed along with equivalent concentrations of PCDDs/PCDFs to obtain a total TCDD TEQ. As noted for the Phase I study, the TEQ approach was applied to PCDD/PCDF and PCB concentrations measured in soils. The TEFs for this investigation are presented as concentrations in soil, and as such are applicable only for evaluating risk associated with exposure via direct contact with soil, specifically incidental ingestion of soil. Samples were analyzed for both Cr VI and total Cr. Chromium exists in a number of ionic states, with chromium III and chromium VI being the most stable and dominant forms encountered in environmental samples (ATSDR 2008). It was assumed that chromium III and chromium VI together comprised 100 percent of the total chromium measured in samples and therefore the concentration of chromium III in each sample was estimated as the difference between the measured concentration of total Cr and the measured concentration of CR VI. A value equal to ½ the detection limit was used as a surrogate for chromium VI concentrations in samples where chromium VI was not detected.

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B. Screening level updates The human health risk-based screening levels have been updated since 2006. Dry weight concentrations of contaminants measured in the individual archived soil samples were compared with the 2010 update of the EPA, Region 9 PRGs, now called Regional Screening Levels (RSLs; EPA 2010), and California Human Health Screening Levels (CHHSLs) September 2010 update (OEHHA 2010). The CHHSLs were derived by the OEHHA, using the same protocol as the RSLs, but with different toxicity values (Cal/EPA 2005). As guidance specific to State agencies, the CHHSLs, which are more stringent than RSLs, were used preferentially over the RSLs. Only a few of the target analytes have CHHSLs. Concentrations of analytes lacking CHHSLs, were compared with the EPA RSLs. Because of the potential for the contaminant distribution to be heterogeneous, comparisons with screening levels were made on a station-by-station basis. Geometric mean concentrations were considered to represent all or major portions of fill for contaminants that appeared to be homogeneously distributed (e.g., certain metals present at background concentrations). 6.0 PHASE II - RESULTS AND DISCUSSION Between Phase I and Phase II, we have data on contaminant levels in 33 individual surface samples and 29 individual subsurface samples (Table 14), for an average surface sample density of approximately 8.5 samples/acre, and a subsurface sample density of 7.4 samples/acre. Subsurface soils are less well represented, and not as evenly distributed throughout the fill area as surface soil samples, due to difficulties posed by rubble while obtaining samples. Difficulties with rubble were encountered throughout the fill area, but mostly along the channel that divides the fill area, areas bordering Laguna Drive and approximately half of the western portion of the fill area (see Figure 8). In addition, to help contain costs, not all samples were analyzed for all of the target analytes. The most complete data are for metals, which occurred at concentrations in some Phase I samples sufficiently high to exceed or potentially exceed hazardous waste criteria, and as such stood out as the COPCs most in need of further consideration. 6.1 Sample parameters Visual features of soil at the individual stations were noted during collection in Phase I of the study. Parameters for all of the individually analyzed samples are provided in Table 15, for reference and to help visualize spatial variations in soil characteristics. In general, material in individual samples was soil-like, in that it was unconsolidated, with textures ranging from predominantly sand and gravel in the top 12 inches to a predominantly sandy clay mixture in subsurface soils. Subsurface soil samples had higher silt, TOC and moisture content than surface samples (Table 15).

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6.2 Contaminant levels in individual samples All results of chemical analyses performed on individual samples are provided in Attachment B. Results are presented as dry weight-based concentrations, but can be converted to wet weight-based values using percent moisture, which is included in results tables. Wet weight-based concentrations are lower than corresponding dry weight-based values. Consequently, if dry weight-based concentrations are found to be below levels of concern, the wet weight-based concentrations will be even lower. With few exceptions, metals were detected in essentially all of the samples at varying concentrations (Table 16). The exceptions were beryllium, chromium VI, mercury, molybdenum, and selenium, which were present at detectable levels in only a few (<3) samples. Soils with high concentrations of total chromium are limited in their distribution (figure 11). Specifically, concentrations in the 1,000s of mg/kg dw were observed at 16C and 16sw, while concentrations at neighboring stations are all below the median of 69 mg/kg dw for reference soils in California (Table 12). The same was evident for zinc (Figure 12). Like chromium and zinc, concentrations of lead decline significantly from highs of more than 2,000 mg/kg dw in samples from Sector #16 to concentrations between approximately 7 mg/kg dw to 500 mg/kg dw in soils from all the other fill area stations. Lead concentrations less than 30 mg/kg dw are typical for soils unaffected by anthropogenic sources, and concentrations between 30 and 500 mg/kg dw dry are within the ranges reported for soils influenced by non-point sources (e.g., atmospheric emissions and dust) in urban and industrial settings (ATSDR 2007). Very high lead concentrations may be attributed to a point source such as discarded battery, but none were evident in the fill area. The distribution of lead concentrations is roughly similar to that of chromium and zinc, except that the drop in concentrations outside the area of highest contamination is to levels more typical of mildly-to-moderately impacted soils from urban/industrial setting than to concentrations more typical of background. Other elements with peak concentrations in individual surface and/or subsurface soil samples from stations in Sector #16 (16nw, 16sw and/or 16C; Figures 2a and 2b), and much lower concentrations in all other samples include copper (102 - 1,396 mg/kg dw in three Sector #16 samples versus 4.3 - 86 mg/kg dw in all other samples), iron (90,585 mg/kg dw in one sector #16 sample versus 4,576 - 32,526 mg/kg dw in all other samples), molybdenum (3.5 - 166 mg/kg dw in three sector #16 samples versus <1.0 mg/kg dw in all other samples), nickel (134 - 612 mg/kg dw in four sector #16 samples versus 4.7 - 36 mg/kg dw in all other samples), selenium (1.8 - 3.4 mg/kg dw in two sector #16 samples and <0.5 mg/kg dw in all other samples), and strontium (265 - 970 mg/kg dw in two sector #16 samples versus 6.4 - 89.5 mg/kg dw in all but one of the other samples).

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Table 15. Basic features (grain size distribution and percent TOC) of individual soil samples

collected from F&G St. Marsh fill area. SURFACE SUBSURFACE

Sam

ple

#

moi

stur

e (a

ve)

Cla

y

Gra

vel

Sand

Silt

TOC

Sam

ple

#

moi

stur

e (a

ve)

Cla

y

Gra

vel

Sand

Silt

TOC

Units % % % % % % Units % % % % % % F&G04se-S 7.4 12.9 5.3 53.8 28 0.56 F&G03-D 15.6 16.7 7 47.5 28.8 1.49F&G05sw-S 5.1 6.7 8.3 59.2 25.9 0.56 F&G04-D 31.2 34.2 8 29.7 28.1 1.98F&G07ne-S 2.7 9.3 7.2 65.7 17.8 0.43 F&G05sw-D 7.4 7.5 11.5 69.3 11.6 0.65F&G07se-S 7.5 8.3 11 60.3 20.4 0.32 F&G07ne-D 15.1 13 6.9 56.4 23.7 0.65F&G07sw-S 3.8 7.6 14 56.1 22.3 0.26 F&G07sw-D 13.1 14.3 11.2 54.8 19.7 0.12F&G08ne-S 2.1 9.8 18.9 60.5 10.8 0.65 F&G08ne-D 16.4 7.8 1.8 58.6 31.9 0.16F&G08se-S 7.3 10.6 27.2 49.4 12.8 0.61 F&G08se-D 14.7 10.1 14.7 53 22.2 0.18F&G09ne-S 5.6 9.9 16.5 56.8 16.9 0.45 F&G09ne-D 16.0 10.1 9.1 54.4 26.5 0.12F&G09nw-S 5.5 8.2 19.8 58.6 13.4 1.01 F&G09nw-D 28.6 11.9 6.4 46 35.6 0.97F&G09se-S 6.0 8.5 8.8 68.1 14.6 0.33 F&G09se-D 16.8 6.8 27.7 47.5 18 0.32F&G09sw-S 1.7 4.9 19.6 59.4 16.1 1.32 F&G09sw-D 16.6 9.6 3.7 58.3 28.3 0.19F&G10ne-S 9.5 12.6 11.7 57.2 18.6 0.37 F&G10ne-D 44.7 53.7 1.6 14.8 29.9 1.06F&G10se-S 2.2 8.1 3.9 57.3 30.8 1.08 F&G11se-D 12.2 4.2 37.8 49.5 8.5 1.79F&G11ne-S 5.8 6.3 8.5 68.6 16.6 0.2 F&G11sw-D 26.9 42.9 8.6 24 24.5 1.09F&G11nw-S 3.7 6 27.7 55.4 10.9 1.14 F&G12ne-D 19.9 11 11.4 57.7 20 0.35F&G11se-S 6.0 15.1 4.6 57.7 22.6 0.97 F&G12nw-D 41.3 59.1 5.5 20.8 14.6 0.55F&G11sw-S 3.2 7 17.7 64.5 10.8 1.26 F&G12se-D 20.4 10.2 5.4 63.1 21.2 0.66F&G12ne-S 4.4 7.7 23.2 55.4 13.6 1.13 F&G12sw-D 39.0 41.4 5.3 33.7 19.6 0.77F&G12nw-S 10.2 17.6 8.5 48.2 25.7 0.45 F&G13ne-D 16.4 6.9 10.1 62.8 20.2 0.11F&G12se-S 7.9 8.4 20.4 60.2 10.9 0.58 F&G13nw-D 15.7 10.6 9.6 57.6 22.2 0.27F&G12sw-S 6.3 11.2 9.7 64.1 15 0.59 F&G13sw-D 12.7 6.4 28.9 47.5 17.1 0.61F&G13ne-S 3.2 10.1 9.4 61.3 19.2 1.1 F&G14-D 7.9 7.9 30.3 48.9 13 0.97F&G13nw-S 8.7 16.2 12.1 53.9 17.8 0.48 F&G15ne-D 16.5 13 23.2 50.4 13.5 2.12F&G13sw-S 1.8 6.3 17 57.9 18.8 0.87 F&G15se-D 38.7 60.3 2.3 13.9 23.5 1.14F&G14-S 1.7 10.3 4.8 69.3 15.6 0.26 F&G16C-D 2.4 5.7 30.6 51.8 11.9 2.12F&G15ne-S 5.6 9.7 10.8 62.3 17.1 0.84 F&G16nw-D 11.5 7.6 47.2 36.4 8.8 1.44F&G15nw-S 0.8 5.5 10.3 61.9 22.2 0.73 F&G16sw-D 11.6 5.1 18.5 64.3 12.1 0.65F&G15se-S 11.0 8.2 17.3 63.2 11.3 0.64 F&G17-D 14.6 6.5 18.6 55.9 18.9 0.31F&G16C-S 2.5 3 9 63.8 24.2 0.71 F&G20-D 21.0 49.7 7.1 12.7 30.4 0.17F&G16nw-S 1.5 3.9 21.1 59.1 15.9 1.21 F&G16sw-S 6.6 6.5 17.2 58.9 17.4 1.08 F&G17-S 4.0 7.5 30.1 50.8 11.6 0.63 F&G20-S 11.0 11.7 0 50.2 38.2 0.49

OU3 0955

50

Table 16. Concentration ranges of inorganic analytes in individual samples from F & G St. Marsh fill area, compared with screening levels and reference soils for California (mg/kg dry weight). Screening levels that were exceeded are highlighted (bold).

Results Surface Results subsurface RSL / CHHSL ECO-SSL CA reference

Ana

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imum

Max

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No.

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No.

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Med

ian

Upp

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5th

Al 3,765 24,300 33 / 33 4,495 35,539 29 / 29 77,000 990,000 75,000 83,000 As* <0.506 3.88 28 / 33 <0.506 8.10 21 / 29 0.07 0.24 18 43 46 2.7 4.7 B <10.0 65.2 32 / 33 10 267 29 / 29 16,000 200,000 17 26 Ba* 31.7 198 33 / 33 23 121 29 / 29 5,200 63,000 330 2000 519 625 Be* <0.020 0.400 4 / 33 <0.020 0.72 5 / 29 16 190 40 21 1.27 1.53 Cd* 0.131 2.20 33 / 33 <0.200 5.93 28 / 29 1.7 7.5 32 140 0.77 0.36 0.28 0.44 Cr-total 7.58 5,404 33 / 33 6.20 2,437 29 / 29 100,000 100,000 26 34 69 115 Cr VI* <2.00 1,103 3 / 30 <2.00 7.62 1 / 24 17 37 130 Cr III*† 0.00 5,374 5.69 2,429 100,000 100,000 Cu* 8.28 381 29 / 29 4.30 1,396 29 / 29 3,000 38,000 70 80 28 49 22 37 Fe* 4,576 26,200 33 / 33 5,560 90,585 29 / 29 55,000 720,000 33,000 45,000 Hg* <0.100 0.864 8 / 33 <0.100 1.43 3 / 29 18 180 0.19 0.34 Mg 1,686 8,840 33 / 33 1,630 14,388 29 / 29 9,166 12,036 Mn 112 797 33 / 33 85.7 800 29 / 29 220 450 4,300 4,000 590 809 Mo* <1.04 5.70 2 / 33 <1.00 116 1 / 29 380 4,800 0.85 1.4 Ni* 5.69 321 33 / 33 <5.00 612 28 / 29 1,600 16,000 38 280 210 130 27 56 Pb* 7.46 5,138 33 / 33 6.96 2,144 29 / 29 80 320 120 1,700 11 56 21 27 Se* <0.500 3.39 1 / 33 <0.500 1.83 1 / 29 380 4,800 0.52 4.1 1.2 0.63 0.015 0.05 Sr 11.9 970 33 / 33 6.40 406 29 / 29 47,000 610,000 121 180 V* 0.931 70.0 33 / 33 3.38 191 29 / 29 530 6,700 7.8 280 94 134 Zn* 23.4 2,038 33 / 33 19.0 16,329 29 / 29 23,000 100,000 160 120 46 79 153 170 * CHHSL † Concentration estimated as total Cr – Cr VI

OU3 0956

51

Figure 11. Distribution of total chromium concentrations (mg/kg dw) in surface (a) and subsurface (b) soil samples in the F&G St. Marsh fill area. Results for individual samples (circles) and composite samples (squares). a)

b)

OU3 0957

52

Figure 12. Distribution of zinc concentrations (mg/kg dw) in surface (a) and subsurface (b) soil samples in the F&G St. Marsh fill area. Results for individual samples (circles) and composite samples (squares). a)

b)

OU3 0958

53

Figure 13. Distribution of lead concentrations (mg/kg dw) in surface (a) and subsurface (b) soil samples in the F&G St. Marsh fill area. Results for individual samples (circles) and composite samples (squares). a)

b)

OU3 0959

54

Organochlorine compounds were detected in fill area soils at variable concentrations and frequencies, depending on the compound (Table 17). Those that were detected frequently and at highest concentrations were PCBs (mediansurface = 145 µg/kg dw; mediansubsurface = 69 µg/kg dw), followed by DDTs (mediansurface = 35 µg/kg dw; mediansubsurface = 23 µg/kg dw), and chlordanes (mediansurface = 31 µg/kg dw; mediansubsurface = 45 µg/kg dw). Like numerous metals, soils with high levels of PCBs were limited to one sector (Figure 14). Total PCB concentrations in Sector #16 samples were between 2,288 µg/kg dw and 13,427 µg/kg dw, whereas concentrations in the remainder of the samples were between 9 µg/kg dw and 513 µg/kg dw. Although not naturally occurring, PCBs are ubiquitous in soils, due to atmospheric transport if nothing else. Summed concentrations in fill area soils of twelve specific congeners used by Krauss & Wilcke (2003) are consistent with concentrations found by Krauss and Wilcke (2003) in rural soils (up to ~2 μg/kg dw for 12 congeners or ~9 μg/kg dw for total PCBs) and urban soils (up to ~160 μg/kg dw for 12 congeners or ~500 μg/kg dw for total PCBs). Relative contributions of individual congeners to the total PCB concentrations change over time. However, the mixtures found in fill area soils are roughly comparable to mixtures used primarily for dielectric fluids in capacitors and transformers. Other commercial applications might have included transmission line turbine lubricants, heat transfer fluids, hydraulic lubricants, vacuum pumps, cutting oils, inks, adhesives, caulk and joint sealants, insulation and other building materials, rubber products and wire and cable coatings (Erickson and Kaley 2010). The PCBs in the fill area soil samples may have originated from any of the aforementioned sources, which are mostly commercial/industrial in nature. The high PCB concentrations measured in samples from Sector #16 suggest that: (1) substances such as transformer oil were disposed of in that part of the fill area; and / or, (2) the soils in question were transported from a commercial/industrial area where releases such as spills of transformer oil occurred. Dioxin and furan compounds were detected in fill area samples, with mixtures dominated almost entirely by hepta- and octa-CDD/CDFs (Table 17). Only two samples had detectable concentrations of 2,3,7,8-TCDD, the most toxic of the dioxins and furans, and those were at one location adjacent to Lagoon Drive and the other was in Sector #16 (0.0068 μg/kg dw), where concentrations of numerous other contaminants were highest. The most chlorinated congeners (OCDD and OCDF) were detected in more than 75% of the samples analyzed for dioxins, reflecting a combustion-based source. Concentrations of TCDD-TEQ, which factor in contributions for other dioxin/furan congeners and certain PCB congeners (using mammalian TEFs) range from 0.0012 µg/kg dw to 0.2018 µg/kg dw, with the four highest concentrations (0.0435 µg/kg dw to 0.2018 µg/kg dw) occurring in samples from Sector #16. In those samples, PCBs were the dominant contributors to the TCDD-TEQ values. TCDD-TEQ concentrations in soils outside of Sector #16 range from 0.0012 µg/kg dw to 0.0273 µg/kg dw (median = 0.009 µg/kg dw). Concentrations less than approximately 0.020 μg/kg dw are consistent with concentrations measured in soils from rural areas with no known local influences (Urban et al. 2014).

OU3 0960

55

Table 17. Concentration ranges for organochlorine compounds in individual samples from F & G St. Marsh fill area, compared with screening levels (µg/kg dry weight). Screening levels that were exceeded are highlighted (bold).

Results Surface (µg/kg dry) Results subsurface (µg/kg dry) CHHSL / RSL ECO-SSL A

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Aldrin* 0.051 1.68 4/13 0.053 0.876 7/15 33 130 BHC-alpha 0.031 0.542 4/13 0.017 0.525 4/15 77 270 BHC-beta 0.020 0.542 1/13 0.017 0.651 4/15 270 960 BHC-delta 0.020 0.542 4/13 0.017 0.847 5/15 BHC-gamma (Lindane)* 0.048 0.671 5/13 0.017 1.16 3/15 500 2,000 Chlordane-alpha* 0.063 93.1 12/13 0.361 96.6 15/15 430 1,700 Chlordane-gamma* 0.063 132 12/13 0.646 133 15/15 430 1,700 Nonachlor-cis 0.262 35.1 13/13 0.087 35.6 14/15 nonachlor-trans 0.063 60.0 12/13 0.430 68.8 15/15 oxychlordane 0.051 9.94 9/13 0.067 10.1 11/15 ∑ Chlordanes 0.513 328 13/13 1.61 344 15/15 o,p'-DDD 0.063 18.3 11/13 0.437 217 15/15 p,p'-DDD 0.051 4.34 8/13 0.062 17.6 11/15 o,p'-DDE 0.263 23.8 12/13 0.047 8.51 12/15 p,p'-DDE* 0.195 53.2 13/13 1.41 564 15/15 1,600 6,300 o,p'-DDT 0.063 24.8 12/13 1.44 103 15/15 p,p'-DDT 0.446 44.2 13/13 0.424 24.9 15/15 ∑ DDTs* 1.38 102 13/13 9.10 935 15/15 1,600 6,300 93 21 Dieldrin* 0.063 15.6 10/13 0.062 16.9 13/15 35 130 22 4.9 Endosulfan II 0.051 8.80 6/13 0.047 2.37 6/15 370,000 3,700,000 Endrin* 0.061 4.40 7/13 0.047 1.38 9/15 21,000 230,000 HCB 0.061 36.5 8/13 0.059 21.1 8/15 300 1,100 Heptachlor* 0.020 0.764 6/13 0.047 3.29 6/15 130 520 Heptachlor epoxide 0.048 9.35 7/13 0.047 3.08 7/15 53 190 Mirex* 0.020 0.542 0/13 0.017 0.224 1/15 31 120

OU3 0961

56

Table 17. Concentration ranges for organochlorine compounds in individual samples from F & G St. Marsh fill area, compared with screening levels (µg/kg dry weight). Screening levels that were exceeded are highlighted (bold).

Results Surface (µg/kg dry) Results subsurface (µg/kg dry) CHHSL / RSL ECO-SSL A

naly

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Min

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No

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Min

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PCBs (Aroclor)* 8.62 13,427 13/13 20.7 2,288 15/15 1,600 6,300 PCB homolog-Cl1 <1.26 10.8 2/10 <1.88 6.60 5 / 10 PCB homolog-Cl2 <1.26 289 3/10 <0.684 60.6 3 / 10 PCB homolog-Cl3 <2.04 500 7/10 3.68 91.2 10 / 10 PCB homolog-Cl4 <2.04 962 8/10 12.4 243 10 / 10 PCB homolog-Cl5 <2.04 6,400 8/10 10.2 992 10 / 10 PCB homolog-Cl6 <4.62 4,340 9/10 8.92 659 10 / 10 PCB homolog-Cl7 <2.04 983 8/10 3.96 209 10 / 10 PCB homolog-Cl8 <2.04 169 8/10 <1.88 79.2 7 / 10 PCB homolog-Cl9 <3.64 25.5 9/10 <1.88 13.5 6 / 10 PCB homolog-Cl10 <1.94 130 5/10 <0.684 23.4 2 / 10 PCBs (ΣHomologs) 13.2 13,428 9/10 51.2 2,289 1,600 6,300 PCBs (ΣCongeners) 8.29 13,218 10/10 50.5 2,252 1,600 6,300 Pentachloro-anisole 0.061 122 9/13 0.059 152 8/15 TCB-1,2,3,4 0.031 4.69 6/13 0.053 16.0 9/15 18,000 180,000 TCB-1,2,4,5 0.048 3.08 5/13 0.047 175 8/15 18,000 180,000 Toxaphene* 0.410 10.8 0/13 0.342 4.48 0/15 460 1,800 Chlorpyrifos 0.020 0.708 3/13 0.017 1.67 1/15 180,000 1,800,000 2,3,7,8-TCDD* <0.0010 <0.0010 0/11 <0.0010 0.0068 2/13 0.0045 0.018 1,2,3,7,8-PeCDD <0.0051 <0.0051 0/11 <0.0051 0.0038 1/13 1,2,3,4,7,8-HxCDD <0.0051 <0.0051 0/11 <0.0051 0.0000 0/13 1,2,3,6,7,8-HxCDD <0.0051 <0.0051 0/11 <0.0051 0.0241 3/13 1,2,3,7,8,9-HxCDD <0.0051 <0.0051 0/11 <0.0051 0.0111 4/13 1,2,3,4,6,7,8-HpCDD <0.0051 0.215 10/11 <0.0051 0.4142 7/13

OU3 0962

57

Table 17. Concentration ranges for organochlorine compounds in individual samples from F & G St. Marsh fill area, compared with screening levels (µg/kg dry weight). Screening levels that were exceeded are highlighted (bold).

Results Surface (µg/kg dry) Results subsurface (µg/kg dry) CHHSL / RSL ECO-SSL A

naly

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OCDD 0.04558 2.29 11/11 <0.0102 4.4286 11/13 2,3,7,8-TCDF <0.0010 0.0022 2/11 <0.0010 0.0168 3/13 1,2,3,7,8-PeCDF <0.0051 0.0025 1/11 <0.0051 0.0249 3/13 2,3,4,7,8-PeCDF <0.0051 <0.0051 0/11 <0.0051 0.0083 1/13 1,2,3,4,7,8-HxCDF <0.0051 <0.0051 0/11 <0.0051 0.0131 3/13 1,2,3,6,7,8-HxCDF <0.0051 <0.0051 0/11 <0.0051 0.0127 1/13 1,2,3,7,8,9-HxCDF <0.0051 <0.0051 0/11 <0.0051 0.0028 1/13 2,3,4,6,7,8-HxCDF <0.0051 0.003 1/11 <0.0051 0.0333 3/13 1,2,3,4,6,7,8-HpCDF <0.0051 0.0426 4/11 <0.0051 0.0701 8/13 1,2,3,4,7,8,9-HpCDF <0.0051 <0.0051 0/11 <0.0051 0.0252 4/13 OCDF <0.0102 2.7 8/11 <0.0102 0.4390 10/13 TCDD-TEQ 0.0024 0.0153 11/11 0.0039 0.0273 0.0045 0.018 PCB TEQ 0.0012 0.1870 10/10 0.0007 0.0250 10/10 0.0045 0.018 Dioxin TEQ + PCB TEQ* 0.0012 0.2023 11/11 0.0016 0.0436 13/13 0.0045 0.018

OU3 0963

58

Figure 14. Distribution of PCB concentrations (µg/kg dw) in surface (a) and subsurface (b) soil samples in the F&G St. Marsh fill area. Results for individual samples (circles) and composite samples (squares). a)

b)

OU3 0964

59

DDTs were detected in every sample that was analyzed for DDTs (Table 17). Observed concentrations are consistent with concentrations measured in U. S. farm belt soils collected by Ainger et al. (1998) in 1995-1996 (range = undetected - 11,846 µg/kg, and geometric mean = 9.63 µg/kg), and lower than concentrations measured in soils collected from California agricultural fields in 1985 by Mischke et al. (1985; range = 1 µg/kg dw - 31,273 µg/kg dw, and geometric mean = 478 µg/kg dw). Similar total DDT concentrations may be observed in urban soils from areas where DDT was used extensively in the past for disease vector control (Carey et al. 1979). The use of DDT in the U.S. was banned in 1972, so that the occurrence of DDT and metabolites in fill area soils is presumed to be due to activities conducted prior to 1972. However, parent compound was detected in all samples, and constituted more than 50% of the total DDT concentration in nearly a third of the samples (Table 17 and attachments A and B), suggesting that some of the DDT may be from recent releases via illegal use or drift from Mexico where use is legal. Alternatively, the DDT is from historic releases but the DDT is more persistent in upland soils than predicted from studies on DDT in wetlands soils (Mischke et al. 1985). Based on comparisons with total DDT concentrations measured in agricultural soils collected in the 1990s, and given the proximity of agricultural fields to F&G St. Marsh (Figures 4-7), it is likely that the DDT in fill area soils is from past agricultural activities nearby. In addition, it appears that conditions in fill area soils do not favor the breakdown of DDT, and consequently this pesticide may persist in fill area soils for decades to come. Total DDT concentrations in fill area soils are not uniformly distributed (Figure 15) with a maximum of 935 μg/kg dw at one location bordering Lagoon Road, followed by concentrations between 100 and 200 μg/kg dw at two separate locations, and the remainder with concentrations between 1 and 90 μg/kg dw. The distribution may reflect a combination of drift from neighboring fields (broadly distributed low concentrations) combined with isolated patches of soils that were subject to direct spills and/or applications while in the agricultural fields (with subsequent relocation to the fill area) or in the fill area proper. Chlordanes were detected as frequently and at similar concentrations as DDT. With a maximum of 344 μg/kg dw, concentrations of total chlordanes in fill area soils (Table 17) are at the low end of ranges reported by Eisler (1990) for cropland soils in the early 1970s (range= 10 µg/kg dw - 7,900 µg/kg dw; averages = 50 µg/kg dw - 60 µg/kg dw). The distribution of chlordane concentrations in the fill area is very similar to that for total DDT, most notably in that samples with the highest chlordane concentrations (>150 µg/kg dw) also had the highest concentrations of total DDT (>100 µg/kg dw). The co-occurrence of chlordanes and DDTs was most evident in subsurface soil from 03sw (aka sample number 03-D) and both surface and subsurface soil from 11se (samples 11se-S and 11se-D; see Figure 2). Prior to 1978, chlordane was widely used for the control of insects on various types of agricultural crops and vegetation, and until 1983 it is was used for the control of termites in residential structures (Eisler 1990). Based on its co-occurrence with DDTs and agricultural uses, it appears that the chlordanes are from past activities on neighboring agricultural fields and the distribution of chlordanes in fill area soils reflect influences from drift combined with isolated patches of contaminated soils subsequently deposited into the fill area.

OU3 0965

60

PAHs were detected throughout the fill area, with 100% detection frequencies for a number of the individual HPAHs (Table 18). PAHs are ubiquitous in soil, occurring at what might be considered background concentrations in areas where the primary source is atmospheric deposition of combustion products associated with human activities. Total PAH concentrations observed in fill material samples ranged from 44 µg/kg dw to 12,570 µg/kg dw, which is within the range considered background for urban, nonindustrial soils in New England (2,300 to 167,000 µg/kg; Bradley et al. 1994). Maximum concentrations of individual HPAHs are at the low end of ranges considered to be background for urban soils in the United States (ATSDR 1995). However, the distribution of TPAH concentrations within the fill area is not homogeneous (Figure 17), and there appear to be pockets with concentrations that suggest occurrences of localized influences such as a potential waste oil deposit in shallow soils at/around sample Station 8ne, and the occurrence of asphalt debris at numerous locations. Soil samples were analyzed for PAHs to provide data for evaluating risk, as well as to provide information on the distribution of petroleum compounds. Samples were not analyzed for Total Petroleum Hydrocarbons (TPH), which constitute a mix of aromatic (including PAH) and aliphatic compounds. It is desirable to know TPH concentrations because, while petroleum is not considered hazardous under RCRA, it is regulated by the state and requires special consideration for disposal. Unfortunately, it is not possible to estimate TPH concentrations from total PAH concentrations because relative contributions of PAHs to TPH concentrations are highly variable. Therefore, while total PAH concentrations provide indications of where elevated levels of TPH might occur, actual TPH concentrations are not known at this time.

OU3 0966

61

Table 18. Concentration ranges for PAH compounds in individual samples from F & G St. Marsh fill area, compared with screening levels

(µg/kg dw). Exceeded screening levels are highlighted (bold). Results Surface Results subsurface CHHSL / RSL ECO-SSL

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naphthalene <9.23 155 7/13 <9.23 33.5 7/15 3,900 20,000 1-methylnaphthalene <9.23 46.4 3/13 <9.23 41.2 3/15 2-methylnaphthalene <9.23 67.7 6/13 <9.23 33.6 5/15 2,6-dimethylnaphthalene <9.23 64.3 3/13 <9.23 15.6 3/15 1,6,7-Trimethyl-naphthalene <9.23 32.1 3/13 <9.23 7.6 1/15 C1-naphthalenes <9.23 114 7/13 <9.23 74.0 9/15 C2-naphthalenes <9.23 185 4/13 <9.23 79.9 7/15 C3-naphthalenes <9.23 278 8/13 <9.23 204 9/15 C4-naphthalenes <9.23 353 8/13 <9.23 607 12/15 Biphenyl <9.23 19.4 4/13 <9.23 2.4 2/15 Acenaphthalene <9.23 26.1 2/13 <9.23 70.6 4/15 Acenaphthene <9.23 11.8 1/13 <9.23 4.3 1/15 3,400,000 33,000,000 Fluorine <9.23 25.5 3/13 <9.23 14.7 1/15 2,300,000 22,000,000 C1-fluorenes <9.23 207 6/13 <9.23 130 6/15 C2-fluorenes <9.23 565 8/13 <9.23 127 8/15 C3-fluorenes <9.23 819 11/13 <9.23 168 12/15 Phenanthrene <9.23 346 10/13 2.13 298 15/15 1-methylphenanthrene <9.23 239 6/13 <9.23 62.5 8/15 Anthracene <9.23 55.6 4/13 <9.23 150 7/15 17,000,000 170,000,000 C1-Phenanthrenes & Anthracenes <9.23 893 10/13 <9.23 216 14/15 C2-Phenanthrenes & Anthracenes <9.23 1,225 11/13 <9.23 334 14/15 C3-Phenanthrenes & Anthracenes <9.23 1,137 10/13 2.30 364 15/15 C4-Phenanthrenes & Anthracenes <9.23 836 11/13 0.89 419 13/15 fluoranthene <9.23 519 11/13 5.81 596 15/15 2,300,000 22,000,000 pyrene <9.23 513 12/13 7.01 610 15/15 1,700,000 17,000,000

OU3 0967

62

Table 18. Concentration ranges for PAH compounds in individual samples from F & G St. Marsh fill area, compared with screening levels (µg/kg dw). Exceeded screening levels are highlighted (bold).

Results Surface Results subsurface CHHSL / RSL ECO-SSL A

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ts

Inve

rts

Bird

s

Mam

mal

s

C1-Fluoranthenes & Pyrenes <9.23 745 11/13 3.18 382 15/15 chrysene <9.23 390 11/13 3.42 313 15/15 62,000 210,000 C1-chrysenes <9.23 572 11/13 2.39 744 15/15 C2-chrysenes 2.09 1,212 13/13 3.29 636 15/15 C3-chrysenes <9.23 1,047 10/13 <9.23 852 14/15 C4-chrysenes <9.23 231 10/13 <9.23 203 12/15 Benzo(a)anthracene <9.23 308 8/13 <9.23 174 10/15 150 2,100 benzo(b)fluoranthene <9.23 202 8/13 <9.23 298 10/15 150 2,100 benzo(k)fluoranthene <9.23 276 8/13 <9.23 64.1 9/15 1,500 21,000 benzo(a)pyrene <9.23 206 10/13 <9.23 181 14/15 38 130 benzo(e)pyrene <9.23 124 10/13 3.86 217 15/15 perylene <9.23 289 12/13 5.47 439 15/15 Dibenz(a,h)anthracene <9.23 22.2 3/13 <9.23 41.7 7/15 15 210 indeno(1,2,3-cd)pyrene <9.23 126 9/13 <9.23 138 14/15 150 2,100 benzo(g,h,i)perylene <9.23 115 11/13 3.18 166 15/15 dibenzothiophene <9.23 27.3 4/13 <9.23 28.3 2/15 C1-dibenzothiophenes <9.23 162 4/13 <9.23 62.2 5/15 C2-dibenzothiophenes <9.23 382 8/13 <9.23 156 10/15 C3-dibenzothiophenes <9.23 345 7/13 <9.23 170 10/15 ∑LPAH (2 & 3 rings) 17.3 7,084 29.8 2,620 29,000 100,000 ∑HPAH (>3 rings) 27.2 7,138 59.9 6,015 18,000 1,100 total PAH (LPAH + HPAH) 44.5 12,570 89.7 8,635

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Figure 15. Distribution of tDDT concentrations (µg/kg dw) in surface (a) and subsurface (b) soil samples in the F&G St. Marsh fill area. Results for individual samples (circles) and composite samples (squares). a)

b)

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Figure 16. Distribution of TPAH concentrations (µg/kg dw) in surface (a) and subsurface (b) soil samples in the F&G St. Marsh fill area. Results for individual samples (circles) and composite samples (squares). a)

b)

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A. Comparison with hazardous waste criteria Comparisons between wet weight-based concentrations and TTLCs (Table 19) confirm and refine observations obtained during Phase I with composite samples. Results obtained with composite samples (Phase I) indicated that chromium, lead and zinc were present at levels of concern for waste characterization. Results of Phase II analyses demonstrate that TTLC exceedances are confined to individual locations (16C and 16sw) within sector 16 (see Figures 2a and 2b). Results of analyses for chromium demonstrate that TTLC exceedances by chromium extend to both Cr VI (at 16C) and Cr III (at 16sw). The TTLC

Table 19. Wet weight concentrations of analytes in individual samples compared with State TTLCs for hazardous waste characterization.

Analyte TTLC MAX ww Conc samples > TTLC Metals (mg/kg wet weight) (sample/station ID)

Arsenic (As) 500 5.62 0 Barium (Ba) 10,000 189 0 Beryllium (Be) 75 0.49 0 Cadmium (Cd) 100 5.23 0 Chromium (Cr) (VI) 500 1,079 1 (16C-S)2 Chromium (Cr) III 2,500 5,0631 1 (16sw-S)2 Copper (Cu) 2,500 1,232 Lead (Pb) 1,000 4,841 (&1,891) 2 (16sw-D, 16sw-S)2 Mercury (Hg) 20 1.26 0 Molybdenum (Mo) 3,500 103 0 Nickel (Ni) 2,000 540 0 Selenium (Se) 100 3.19 0 Thallium (Th) 700 not done Vanadium (V) 2,400 168 0 Zinc (Zn) 5,000 14,409 1 (16sw-D)

Organics (µg/Kg wet weight) Aldrin 1,400 1.64 0 Chlordane 2,500 307 (total) 0 DDT, DDE, DDD 1,000 786 (total) 0 Dieldrin 8,000 14.4 0 2,3,7,8-TCDD 10 0.0061 (TCDD) / 0.023 (TEQ) 0 Endrin 200 4.12 0 Heptachlor 4,700 2.77 0 Lindane (gamma BHC) 4,000 1.03 0 PCBs (Aroclors) 50,000 13,126 0 Toxaphene

5,000

<10.8

1. Chromium III concentration computed as the difference between the total chromium concentration and the chromium VI concentration.

2. Sample numbers include designations for surface soils (-S) and subsurface soils (-D).

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for zinc was exceeded in one subsurface sample from Sector #16 (16sw) and the TTLC for lead was exceeded in both the surface sample and the subsurface sample from one station in Sector #16 (16sw). The only contaminants with concentrations that exceeded screening levels based on potential leachability (STLC-based) were chromium, copper, nickel, lead and zinc. The STLC-based screening levels for these elements are respectively 50 mg/kg ww, 250 mg/kg ww, 200 mg/kg ww, 50 mg/kg ww, and 2,500 mg/kg ww. Exceedances by chromium, copper, nickel and zinc were confined to soil samples from Sector #16. Outside of Sector #16, maximum concentrations of chromium (43.5 mg/kg), copper (102 mg/kg), nickel (143 mg/kg) and zinc (755 mg/kg) were all well below STLC-based screening levels. Concentrations of lead were not. Dry-weight concentrations of lead measured in 59 samples from outside of Sector #16 ranged from 7 mg/kg to 462 mg/kg, and among those 29 exceeded the STLC-based screening level. Overall, concentrations of chromium, lead and zinc measured in samples from Sector #16 are sufficiently high (> TTLCs) to qualify material from that area as hazardous waste. Lead concentrations in nearly half of the samples from other parts of the fill area exceed STLC-based screening levels and as such soils from much of the fill area may be designated as hazardous waste, depending on results of tests for leachability. B. Comparison with risk-based screening levels Human health risk-based screening levels Dry weight-based contaminant concentrations measured in individual surface and subsurface soil samples are summarized in Tables 16-18. Only concentration ranges and detection limits are shown because estimates of central tendency (e.g., means) may not be applicable, and maximum concentrations are the values of greatest interest for screening purposes. As was observed with composite samples, measured concentrations of very few target analytes exceeded CHHSLs/RSLs. The human health risk-based screening levels were exceeded by maximum concentrations of four inorganics (arsenic, cadmium, lead, and chromium VI), two organochlorines (PCBs and TCDD-TEQ), and four individual HPAHs (Tables 16-18). Of these, arsenic frequently exceeded screening levels, but concentrations in all but four samples were less than 4.0 mg/kg dw (median approximately 1.65 mg/kg dw) and therefore were comparable to concentrations observed in reference soils for California. Cadmium concentrations exceeded the residential use-based screening level only, and only in five out of the 62 samples. Like other metals, two of the highest concentrations (2.2 mg/kg dry and 5.9 mg/kg dry) were in soil samples from sector #16 (see Figures 2a and 2b). Chromium VI was measured in the 54 samples submitted to the lab for Phase II. In those, chromium VI was below the limits of detection (2 mg/kg) in all but 4 samples. When detected, chromium VI concentrations exceeded CHHSLs /RSLs for commercial/industrial land uses in one surface sample from Sector #16 (1,103 mg/kg dw at

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16C). Lead concentrations exceeded the CHHSLs/RSLs for residential use in 29 of 62 samples and for commercial/industrial land use in five samples. Consequently, the distribution of lead at concentrations that exceed CHHSLs / RSLs is more dispersed than for other elements. The extent to which lead concentrations exceed commercial/industrial CHHSLs/RSL is between 1.1 and 1.5-fold in three samples, compared with 6.7 and 16-fold for lead in two samples (one subsurface and one surface soils) from 16sw (see Figures 2a, 2b and 12). Total PCB concentrations exceeded CHHSLs/RSLs for residential use only, and only in four soil samples from sector 16, where concentrations were between 2,288 µg/kg dw and 13,427 µg/kg dw. Total PCB concentrations in remaining samples were between 9.0 and 510 µg/kg dw (Table 17). The maximum concentration of TCDD alone (0.0068 µg/kg dw) exceeded the CHHSLs /RSLs for residential land use only, and only in one sample from sector #16 (16sw). Concentrations of TCDD-TEQ, which factor in contributions for other dioxin/furan congeners and certain PCB congeners exceeded CHHSLs/RSLs for residential and commercial/industrial use in six samples, with the four highest concentrations (and exceedances) (0.044 - 0.202 µg/kg dw) occurring in soils from the three stations in Sector #16. In those samples, PCBs were the dominant contributors to the TCDD-TEQ values. TCDD-TEQ concentrations in soils outside of Sector #16 range from 0.0012 µg/kg dw to 0.0273 µg/kg dw (median = 0.009 µg/kg dw). Of these, concentrations in four samples exceed CHHSLs/RSLs for industrial use (0.018 µg/kg dw), and in 13 samples (out of 24) exceed the screening level for residential use (0.0045 µg/kg dw). However, TCDD-TEQ concentrations observed in soils outside of Sector 16 are within the range of concentrations measured in soils from rural areas with no known local influences (Urban et al. 2014). Maximum concentrations of three HPAH compounds (benzo(a)anthracene, benzo(b)fluoranthene and dibenz(a,h)anthracene) exceeded CHHSLs/RSL for residential exposure only, and exceedances were infrequent (respectively, 2, 3 and 4 out of 28 samples). The residential screening level for benzo(a)pyrene was exceeded by measured concentrations in 7 out of 28 samples, while the industrial use screening level was exceeded in only 3 samples. The distribution of these compounds, and subsequently their associated risks, parallel the distribution of HPAHs as a whole. Overall, generic human health risk-based screening levels were exceeded by few compounds and in only a few samples. Risks posed to humans by contaminants in fill material, particularly under the industrial use exposure conditions, are limited to a few contaminants, and mostly around Sector #16. Contaminant levels outside of Sector #16 are such that further analyses may be required for removal and/or reuse in residential settings. However, exposure associated with land management activities such as excavating, gardening and path maintenance is less than that which would occur under residential use conditions. Consequently, if left in place, soils outside of Sector #16 are expected to pose little to no contaminant-related risk to land managers.

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Ecological risk-based screening levels Ecological risk-based screening levels were exceeded by more contaminants than were human health risk-based screening levels. The greater risk for ecological receptors reflects the fact that ecological receptors: (1) can be more sensitive to certain contaminants than humans; (2) have much more direct contact with the soil than humans; and, (3) are potentially exposed to soil-borne contaminants that bioaccumulate in the tissues of resident food web organisms. Concentrations of manganese, cadmium, lead, and zinc exceeded ECO-SSLs for ecological receptors (Table 16), but elevated risks may be unavoidable because concentrations are comparable to background levels. Concentrations of these elements exceed the lowest ECO-SSLs (i.e., for most sensitive receptors) in all but a few samples, which suggests that they are present at potential levels of concern for sensitive ecological receptors throughout the fill area. However, concentrations of manganese in all but three samples and zinc in all but six samples are less than the median background concentrations for soils in California (respectively, 590 mg/kg dw and 153 mg/kg dw). For zinc, the highest concentrations and greatest risk to ecological receptors occur in samples from Sector #16 (at 755 mg/kg - 16,329 mg/kg; Figure 11). Zinc concentrations in soils outside Sector #16 range from 19 to 220 mg/kg dw and concentrations are below 150 mg/kg dw in nearly all of those samples. Ecological risks associated with contaminants that exceed ECO-SSLs but not background are considered unavoidable. In all but a few samples, the extent to which concentrations of cadmium exceeded ECO-SSLs were relatively small (< 5-fold). Contaminant levels that exceed screening levels by only a small amount are not necessarily expected to cause adverse effects, because of the way that screening levels are developed. Concentrations of chromium, copper, nickel and selenium exceeded ECO-SSLs for most sensitive receptors in fewer than 8 out of 62 samples, depending on the contaminant. In addition, exceedances were limited for the most part to samples from stations in Sector #16. Chromium concentrations were below the lowest ECO-SSL for Cr III (26 mg/kg dw for mammals) in all but six samples, with small exceedances (at 37 mg/kg - 44 mg/kg) in three samples outside Sector #16, and substantial exceedances (at 1,026 - 5,404 mg/kg) in samples from stations within Sector #16 (Figure 8). Copper concentrations were below the lowest ECO-SSL (28 mg/kg dw for birds) in all but eight samples with small to moderate exceedances (at 31 mg/kg - 86 mg/kg) in five samples from sectors 11 and 12, and more substantial exceedances (at 102 mg/kg - 1,396 mg/kg) in three samples from Sector #16. Nickel concentrations were below the lowest ECO-SSL (38 mg/kg dw for plants) in all but four samples from Sector #16 (at 134 mg/kg dw - 612 mg/kg dw). Selenium concentrations were below the lowest ECO-SSL (0.52 mg/kg for plants) in all but two samples from sector #16 (at 1.8 mg/kg and 3.4 mg/kg dw). For all of these inorganics, the potential for ecological impacts is limited primarily to soils from Sector #16. Lead concentrations exceeded the ECO-SSL for most sensitive receptor (11 mg/kg for avian insectivores) in nearly all of the 62 samples that were analyzed for metals. In addition, lead concentrations exceeded the ECO-SSL for the second most sensitive

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receptor (56 mg/kg dw for small mammalian insectivores) in 33 of the 62 samples. The greatest exceedances and potential ecological risks occurred in samples from Sector #16 where the ECO-SSLs were exceeded up to 467-fold for avian species and up to 92-fold for small mammals. Outside of Sector #16, exceedances were at least an order of magnitude lower (approximately 5-fold to 45-fold), and in nearly half of the samples, they were two orders of magnitude lower (up to ~5-fold). The ECO-SSLs are generic and intentionally conservative, and if more site-specific factors were considered, potential risks posed to wildlife by lead concentrations in the last category (concentrations up to ~60 mg/kg dw for birds, and up to ~275 mg/kg dw for mammals) may be negligible. However, soils with lead concentrations that exceed wildlife risk-based screening levels occur in patches throughout the fill area, and as such lead is an ecological COPC that might require further consideration using site-specific conditions, if restoration of upland habitat is considered for the fill area. Concentrations of HPAHs in some of the fill area samples exceed the lowest ECO-SSL for that class of contaminants (1,100 µg/kg for mammals). Concentrations of total HPAHs were greater than the ECO-SSL in 12 (at 1,050 µg/kg dw - 7,138 µg/kg dw) of the 28 samples analyzed for PAHs. For ten of the twelve samples, total HPAH concentrations exceed the ECO-SSL by a factor of three or less and the highest exceedance was approximately 7-fold. In addition, the screening level for HPAHs is based on dose-response data for one of the most toxic of the individual HPAH compounds (benzo(a)pyrene; EPA 2007f) and as such is a very conservative (protective) screening level for HPAHs as a mixture. Consequently, while some of the observed HPAH concentrations are greater than ecological risk-based screening levels, the likelihood for adverse effects from exposure to HPAHs is low. Total PAH concentrations ranged from 44 µg/kg dw to 12,570 µg/kg dw, which is within the range considered background for urban, nonindustrial soils in New England (2,300 to 167,000 µg/kg; Bradley et al. 1994). However, the distribution of TPAH concentrations within the fill area is not homogeneous (Figure 17), and there appear to be pockets with noticeably elevated concentrations (e.g., >5,000 µg/kg dw) that reflect localized influences such as a potential waste oil deposit in shallow soils at/around sample Station 8ne (Figure 17), and the occurrence of asphalt debris. Whether the observed concentrations pose a risk to terrestrial ecological receptors is uncertain because there are no ECO-SSLs for total PAHs. If soils from the fill area were to erode into the F&G St. Marsh tidal creek, total PAH concentrations in some fill area samples would exceed low-end thresholds used by MacDonald (1994; 1,680 µg/kg dw) and Long et al. (1995; 4,022 µg/kg) for toxicity to benthic biota in estuarine and marine systems. Based on frequency of detection and concentrations, PCBs were the most prominent of the organochlorine compounds detected in fill area soils. There are no ECO-SSLs for PCBs. However, other potential screening levels have been developed by a variety of agencies and authors, and adopted for use by EPA, Region 4 (USEPA, R4 2001, Friday 1998). Of the alternate screening levels, total PCB concentrations greater than 1,000 µg/kg dw are considered indicators of moderate contamination and may require further study, and concentrations greater than 10,000 µg/kg dw are considered sufficient to warrant cleanup

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(Friday 1998). Total PCB concentrations measured in fill area samples range from 8.62 µg/kg dw to more than 13,427 µg/kg dw. Twenty fill area samples were analyzed for PCBs and of those 15 had total PCB concentrations between 50 µg/kg dw and 510 µg/kg dw, while four samples from Sector #16 had concentrations between 2,252 µg/kg dw and 13,218 µg/kg dw (Figure 13). Consequently, total PCB concentrations measured in samples from Sector #16 are sufficiently elevated to be of concern for ecological receptors. Like some of the other ecological COPCs, most notably metals, the risks associated with PCBs in fill area soils are confined to soils in Sector #16. Ecological screening levels were exceeded by total DDT and dieldrin concentrations in some samples (Table 18; Appendix B). Concentrations of total DDT exceeded the lowest ECO-SSL (21 µg/kg dw for mammals) in more than half (N=15) of the 28 individual samples that were analyzed for DDT (Figure 14; and appendices), while dieldrin concentrations exceeded the lowest ECO-SSL for that pesticide (4.9 µg/kg for mammals) in nine of the 28 samples. DDT concentrations exceeded the ECO-SSL for the second most sensitive receptor (93 µg/kg for birds) in four samples, while dieldrin concentrations did not, suggesting that DDT may be of greater concern than the dieldrin. ECO-SSL exceedances by total DDT concentrations were notably greater for samples from Sector #3 (10-fold for birds, and 44-fold for small mammals) than for samples from other parts of the fill area, where exceedances for the lowest ECO-SSL were 8.4-fold at one location (11se), and less than five-fold at all other stations. Exceedances of screening levels for birds are all less than 2.0-fold. Only 28 individual samples were analyzed for DDTs and dieldrin, but when considered in combination with results from composite samples (Figures 10 and 17), it is evident that potential ecological risks posed by DDTs is greatest for soils from Sector #3. While there appear to be patches outside Sector #3 where concentrations of pesticides are elevated, the extent to which concentrations of DDT and dieldrin exceed conservative generic screening levels (ECO-SSLs) suggest that potential risks posed by these pesticides are low to moderate for insectivorous mammals and from negligible-to-low for insectivorous birds. The fact that higher levels of DDTs co-occurred with comparable concentrations of chlordane isomers, raises concerns about potential for interactive effects that are not readily quantified, and therefore is raised only as an uncertainty. Concentrations of individual chlordanes did not exceed initial screening levels for waste management purposes, or for human health risk. Unfortunately, there are no readily available ecological risk-based screening levels for chlordanes. Consequently, it is not possible to determine if the observed chlordane concentrations pose any risk to ecological receptors. Because chlordane concentrations are comparable to those for total DDTs, and because they appear to co-occur with DDTs, the chlordanes may be considered a major contributor to the mixture of organochlorine pesticides needing further attention if the fill area is considered for habitat restoration projects. This preliminary assessment of ecological risks is based on comparisons between contaminant levels measured in fill area soil samples and generic screening levels. The screening levels are contaminant concentrations in soil below which no adverse effects are expected and above which the contaminant may require further consideration. Whether the

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concentrations of contaminants observed in fill area soils will actually adversely affect ecological receptors depends on site-specific conditions that affect availability of the contaminants to receptors and contaminant sensitivities of species that inhabit the site. A site-specific assessment of ecological risks posed by metals (primarily lead) and organochlorine pesticides may be warranted if fill area soils are to be used as part of restored habitat for wildlife. Data from the current study are sufficient to support a bench-top assessment of ecological risks for fill material used as upland habitat. Additional sampling and analyses would be required if fill material is considered for use as wetland habitat. Other risks – offsite migration Risks associated with contaminants in fill area soils are currently specific to terrestrial settings. If the soils erode into the marsh or if the land is to be restored to marsh habitat, risks to aquatic and aquatic-dependent wildlife in estuarine/marine settings would have to be considered. Sediment screening levels such as those developed for directly exposed benthic invertebrates (Long et al. 1995 and MacDonald 1994) and for indirectly exposed aquatic-dependent wildlife (Zeeman 2004), tend to be lower than the ECO-SSLs for contaminants in upland soils, indicating an elevated level of ecological risk for soils that enter the marsh system. Results of an earlier study by Zeeman et al. (2008) indicate that metals are present in sediments from the F&G Street Marsh creek at concentrations that exceed generic screening levels. Concentrations of cadmium, nickel and zinc exceeded high end screening levels for impacts on benthic invertebrates, and numerous other contaminants exceeded low-end screening levels. There are multiple potential sources of contaminants observed in the creek, including erosion from the fill area and past direct discharges by Goodrich Aerostructure via their Outfall #1 (Zeeman et al. 2008). There are no data on contaminant levels in creek sediments between the fill area and previous sampling stations approximately 900 feet downstream of the fill area toe. Consequently, the fill area cannot be discounted as a potential ongoing source of contaminants and contaminant-related impacts in sediments of the marsh’s creek. If occurring, erosion of contaminated soils from the fill area into the F&G Street Marsh creek may be considered releases into waters of the State by regulatory agencies, as were the releases from Goodrich Aerostructures. C. Tentative delineation of contamination Areas of contamination were tentatively delineated, based on levels measured in samples (Figure 18). It is important to note that not all of the individual samples were analyzed for contaminants. Of the individual samples that were analyzed (N=60), all were analyzed for inorganics, but only subsets were analyzed for other contaminants (Table, 14): However, all of the individual samples (N=85) are represented as parts of composite samples in Phase I of this study. A basic feature of contamination in the fill area is that it is patchy, with detections and/or elevated concentrations occurring in fairly definable subareas (zones). Three zones are evident, based on contaminant concentrations. These areas are defined as:

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• The most contaminated zone, or “hot spot” includes soils from within and

immediately adjacent to Sector #16 at the southern end of the fill area (Figure 17, red oval). Soils from this zone had concentrations of chromium, lead and zinc that exceed TTLCs, and concentrations of other inorganics (cadmium, copper, molybdenum, nickel, selenium, strontium) and PCBs that were noticeably elevated compared with the rest of the fill area. Additional sampling would be required to precisely identify the edges. However, the most contaminated zone covers approximately 0.14 acres, with an estimated volume (assuming a fill depth of 48 inches, and no rubble or construction debris) of approximately 901 cubic yards that would definitely require consideration as hazardous waste if removed from the site;

• Soils in moderately contaminated zones (Figure 17 orange ovals) have contaminant levels that are elevated, compared with the rest of the fill area, but exceed only conservative (protective) risk-based screening levels and are well below TTLCs. There appear to be two moderately contaminated zones. One is essentially an extension of the most contaminated zone. Some of the higher concentrations of PAHs, and OC pesticides (DDT and chlordanes) were also observed in this zone, specifically at 11se and 15ne. This area covers approximately 0.19 acres. Approximately 0.17 acres of soil bordering Lagoon Drive constitutes a second moderately contaminated zone, due to elevated levels of OC pesticides (DDTs, chlordanes and dieldrin) and PAHs. Concentrations of lead in moderately contaminated soils are such that the soils may require further testing for hazardous waste designation, based on leachability under landfill conditions (for removal). Contaminant levels in these soils may pose some risk to ecological receptors if habitat restoration with the soils in place is considered. While ecological screening levels were exceeded by contaminant levels observed in these soils, the likelihood of observing adverse effects may be low, depending on site-specific conditions; and,

• One “other” zone consists of soils in Sector #8 where there was visible evidence of waste oil or lube oil just below the surface (within the top 12 inches) (Figure 17, yellow oval). Concentrations of the more toxic HPAHs exceeded screening levels for most sensitive receptors only, and the PAH signature indicates that the material is un-combusted in nature (e.g., lube oil). Soils in this zone had

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Figure 17. Tentative extent of the hot spot (solid red oval), moderately contaminated areas

(orange ovals) and other areas of interest (dashed yellow ovals) in the F&G St. Marsh fill area.

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PCB concentrations that were elevated compared with the rest of the fill area, but not above screening levels, and well below levels associated with transformer oil. The size of the apparent waste oil deposit is not known. It was visible at one sampling station only. Based on visual evidence, and PAH concentrations in composite samples from neighboring sectors, it is roughly estimated that this zone is 0.17 acres.

Contaminant levels in the remaining 3.23 acres of the fill area are low and concentrations of most metals are consistent with background concentrations. With one exception, concentrations of COPCs in soils outside of the hot spot are below screening levels for potential hazardous waste designation. The exception is lead. Concentrations of lead are within ranges reported for sweepings from roadways in urban areas (ATSDR 2007), but also exceed its screening level of 50 ppm ww for waste classification based on potential for leaching. Tests for leaching will be required even for these soils if removal is considered, but there is a potential for a non-hazardous waste designation as the outcome. Based on comparisons with generic soil screening levels, contaminant levels in soils outside of the contaminated zones pose some risk for ecological receptors in upland habitats. The risks are believed to be limited, but a site-specific assessment of ecological risks would be warranted if the soils in question are to be left in place and subsequently considered for upland habitat restoration. Currently available data are sufficient to support a bench-level assessment, with limited sampling to fill data gaps on factors such as soil salinity and pH (see Section 3.4). D. Data gaps By using a grid approach with a sample density of four stations per 0.33 acre-sector, this investigation has greatly reduced uncertainty about the nature and distribution of contaminants, most notably metals, in the fill area soils. It has also reduced uncertainty about the history of the fill area, and supported a preliminary delineation of a hot spot (approximately 0.14 acres) and estimate of the volume of material that we know to qualify for treatment as hazardous waste (approximately 901 cubic yards). Results of this investigation raised some questions about fill material from outside of the hot spot where contaminant levels are low but still could result in a hazardous waste designation, depending on leachability. Consequently, in addition to reducing uncertainty about nature and extent of contaminants, results of this investigation point to data gaps that, once addressed, will help to refine the assessment of options for managing fill area soils and subsequent restoration of salt marsh habitat. Data gaps include the following:

• Actual volumes of fill material in much of the fill area, including the most contaminated (hazardous waste) zone, may be less than preliminary estimates due to the presence of concrete rubble and construction debris;

• Whether moderately elevated concentrations of lead observed in material outside of the hot spot (50 to 500 mg/kg dw) are sufficient to result in hazardous waste designation, based on leachability, is not known. This uncertainty extends to all

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contaminants for which there are liquid-phase screening levels (STLCs; from 22 CCR Division 4.5, Chapter 11, Article 3, §66261.24);

• Samples were analyzed for nearly all of the contaminants that have solid phase screening levels for hazardous waste designation (TTLCs; see Section 2.4). Exceptions include antimony, cobalt, silver, thallium, fluoride salts, asbestos, herbicides (2,4-D and 2,4,5-TP), and Kepone. Whether these analytes are present at concentrations exceeding TTLCs in material from outside of the hotspot is unknown;

• Total petroleum hydrocarbons (TPHs) are regulated by the state. Samples were analyzed for one petroleum fraction (PAHs) but not for entire mixtures (TPH). Whether concentrations of TPH, particularly in the vicinity of an apparent waste oil deposit, exceed screening levels for a special waste designation is unknown;

• The fill area may be contributing to observed elevated levels of contaminants and contaminant-related impacts in F&G Street Marsh creek sediments. Currently available data are insufficient to reach a definitive conclusion about fill material as a potential ongoing source of contaminants in creek sediments;

• A number of contaminants are present at levels that exceed generic and conservative risk-based soil screening levels for human health and wildlife, mostly for wildlife. Whether such exceedances would occur if more site-specific exposure conditions were considered is uncertain; and,

• Whether soils from any part of the fill area might be safe for use in an aquatic setting was not considered in this investigation. Potential fish and wildlife risks associated with using fill area soils in aquatic habitat are unknown.

7.0 CONCLUSIONS AND RECOMMENDATIONS 1. Fill material appeared in two phases; one between 1964 and 1970, and the other

between 1970 and 1975. The history corresponds with activities for road construction, dredging and reconfiguration of the marsh creek mouth for industrial facilities and a boat yard. The presence of soil-like material intermingled with rubble (concrete and asphalt) and rebar is consistent with construction activities.

2. Fill depth is variable, ranging from 1.0 to approximately 48 inches (median 31

inches). A depth of 48 inches was assumed for preliminary fill volume estimates. Actual volumes are likely to be equal to or less than preliminary estimates, depending on the location.

3. Soils in the fill area are mixed with concrete rubble and construction debris, which

for any given area will effectively reduce the volume of soil that would/might require treatment as hazardous waste.

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Recommendation: A survey to determine the distribution of rubble and

construction debris is recommended. Doing so will help to refine estimates of the volume of soil that would require treatment as hazardous waste.

4. A contaminant hot spot was identified based on concentrations of lead, zinc and

chromium that exceed solid phase screening levels for hazardous waste designation (TTLCs). The hot spot also had the highest PCB concentrations observed in fill samples. The hotspot covers an area of approximately 0.14 acres, for a preliminary volume estimate of 901 cubic yards. The actual volume is probably smaller due to the presence of rubble and construction debris, and variable fill depths less than the baseline assumption of 48 inches.

Recommendation: Hot spot removal is recommended to reduce contaminant-

related risks to wildlife that rely on the upland and upland transitional habitat at F&G Street Marsh, and to reduce the potential for highly contaminated soil to erode into the tidal creek.

5. Although noticeably less contaminated, fill material outside of the hot spot has

concentrations of lead that may exceed screening levels for hazardous waste designation based on potential for leaching into groundwater. The actual potential for contaminants to leach into groundwater is determined by standard leaching tests, which were not performed for this investigation. Absent data from leaching tests, it must be assumed that approximately 24,204 cubic yards of the fill area material will require treatment as hazardous waste if removed from the site.

Recommendation: Standard leaching tests are recommended for soil samples from

selected locations in moderately contaminated and least contaminated zones in the fill area. Results of leaching tests will help to refine estimates of the volume of material that would be designated as hazardous waste.

Recommendation: It is recommended that soils collected for leaching tests also be

analyzed for selected inorganics (antimony, cobalt, silver, thallium, fluoride salts and asbestos) herbicides (2,4-D and 2,4,5-TP), and Kepone to ensure that none of these analytes are present at levels that exceed solid phase screening values for hazardous waste designation (TTLCs; see section 2.4).

6. Fill material outside of the hot spot has areas where concentrations of total PAHs

appear elevated. Because PAHs are a component of TPHs, concentrations of TPHs will be elevated in these areas as well. Actual TPH concentrations are not known and may in some cases exceed screening levels for designation as special waste by the state.

Recommendation: It is recommended that soils collected for leaching tests also be

analyzed for TPHs to confirm that concentrations do or do not exceed solid phase screening values for designation as special waste by the state.

OU3 0982

77

7. Visual observations and PAH profiles indicate that there is a shallow subsurface

deposit of waste oil in one sampling sector. The size of the deposit is tentatively estimated to be 0.17 acres.

Recommendation: It is recommended that the size of the oil deposit be delineated

using standard procedures for detecting and characterizing shallow subsurface pockets of spilled oil. Doing so will help to refine estimates of the volume of soil that would be considered as special waste by the state.

8. Overall, generic and conservative (residential) human health risk-based screening

levels were exceeded by few compounds and in only a few samples. The fill area soils are not intended for residential use. If left in place, fill area soils, especially those outside of the hot spot are expected to pose little to no contaminant-related risk to Refuge personnel involved in land management activities.

9. Contaminants in the fill area pose more risks to ecological receptors than to human

receptors, based on exceedances of generic soil screening levels. The risk may be limited, however, if site-specific conditions and uses are considered, and especially if soils from the hot spot are removed.

Recommendation: A bench-level risk assessment that considers site-specific

bioaccumulation and use factors by wildlife, and background concentrations for metals, might be desirable, if fill area soils are to be used as part of restoring habitat for wildlife.

10. Contaminated soil from the fill area has the potential to erode into marsh habitat

and may be contributing to elevated levels of contaminants that have been found in creek sediments.

Recommendation: It is recommended that measures be taken to prevent erosion of

soils from the fill area, especially the hot spot, into marsh habitat including the tidal creek where potential impacts of contaminants from Goodrich Aerostructures discharges and/or the fill area have been observed.

8.0 REFERENCES Adrian Brown Consultants, Incorporated. 1998. ASTM Phase I Site Assessment

prepared for B.F. Goodrich Aerospace, 850 Lagoon Drive, Chula Vista, California. Adrian Brown Consultants, Incorporated, Denver, Colorado.

Agency for Toxic Substances and Disease Registry (ATSDR). 1995. Toxicological

profile for polycyclic aromatic hydrocarbons. ATSDR, U.S. Public Health Service, Atlanta, Georgia. 487 pp.

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Agency for Toxic Substances and Disease Registry (ATSDR). 1998. Toxicological profile for chlorinated dibenzo-p-dioxins. ATSDR, U.S. Public Health Service, Atlanta, Georgia. 721 pp.

Agency for Toxic Substances and Disease Registry (ATSDR). 2007. Draft

toxicological profile for Lead. ATSDR, U.S. Public Health Service, Atlanta, Georgia. 582 pp

Agency for Toxic Substances and Disease Registry (ATSDR). 2008. Draft

toxicological profile for chromium. ATSDR, U.S. Public Health Service, Atlanta, Georgia. 610 pp.

Ainger, E.J., A.D. Leone and R.L. Falconer. 1998. Concentrations and enantiomeric

ratios of organochlorine pesticides in soils from the U.S. corn belt. Environ. Sci. Tech. 32:1162-1168.

Beyer, W.N. 1990. Evaluating soil contamination. U.S. Fish and Wildlife Service, Biological Report 90(2). U.S. Fish and Wildlife Service. Washington, D.C.

Birmingham, B. 1990. Analysis of PCDD and PCDF patterns in soil samples: Use in the estimation of the risk of exposure. Chemosphere. 20:807-814.

Bradford, G.R., A.C. Chang, A.L. Page, D. Bakhtar, J.A. Frampton and H. Wright. 1996. Background concentrations of trace and major elements in California soils. Kearny Foundation of Soil Science, University of California, Riverside, California. Bradley, L.J.N., B.H. Magee and S.L. Allen. 1994. Background levels of polycyclic aromatic hydrocarbons (PAH) and selected metals in New England urban soils. J. Soil Contam. 3(4):1-13

California Environmental Protection Agency (Cal/EPA). 2005. Use of California

Human Health Screening Levels (CHHSLs) in evaluation of contaminated properties. California Environmental Protection Agency, Sacramento, CA. 67 pp.

California Office of Environmental Health Hazard Assessment (OEHHA). 2010. Soil

screening numbers, September 23, 2010 update. California Office of Environmental Hazard Assessment, Sacramento. http://oehha.ca.gov/risk/chhsltable.html

Carey, A.E., P. Douglas, H. Tai, W.G. Mitchell and B.G. Wiersma. 1979. Pesticide

residue concentrations in soils of five United States cities, 1971 - Urban soils monitoring program. Pesticides Monitor. J. 13(1):1-46

Eisler, R. 1990. Chlordane hazards to fish, wildlife, and invertebrates: A synoptic

review. Contaminant hazards reviews, Report No. 21. U.S. Fish and Wildlife Service, Laurel, Maryland. 49 pp.

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Erickson, M.D. and R.G. Kaley II. 2010. Applications of polychlorinated biphenyls.

Environ. Sci. Pollut. Res. 18(2):135-151.

Friday, G.P. 1998. Ecological screening values for surface water, sediment, and soil. WSRC-TR-98-00110. Westinghouse Savannah River Company, Savannah River Site. Aiken, South Carolina.

Hellou, J. 1996. Polycyclic aromatic hydrocarbons in marine mammals, finfish and

mollusks. In “Environmental Contaminants in Wildlife, Interpreting Tissue Concentrations.” W. N. Beyer, G.H. Heinz and A.W. Redmon-Norwood, eds. Society of Environmental Toxicology and Chemistry, Special Publications Series. Lewis Publishers, Boca Raton, Florida. pp. 229-250.

Krauss, M. and W. Wilcke. 2003. Polychlorinated naphthalenes in urban soils:

analysis, concentrations, and relation to other persistent organic pollutants. Environ. Poll. 122(2003):75-89.

Long, E.R., D.D. MacDonald, S.L. Smith and F.D. Calder. 1995. Incidence of adverse

biological effects within ranges of chemical concentrations in marine and estuarine sediments. Environ. Management. 19(1):81-97.

MacDonald, D.D. 1994. Approach to the assessment of sediment quality in Florida

coastal waters. Volume 1. Development and evaluation of sediment quality assessment guidelines. Report prepared for Florida Department of Environmental Protection, Tallahassee, Florida.

Mischke, T., K. Brunetti, V. Acosta, D. Weaver, M. Brown. 1985. Agricultural

sources of DDT in California’s Environment. Environmental Hazards Assessment Program, California Department of Food and Agriculture. Sacramento, CA. 35 pp.

P & D Environmental. 2003. Preliminary investigation of soil and groundwater contaminants, F & G Marsh, Sweetwater National Wildlife Refuge, Chula Vista, California. P & D Consultants, Incorporated, San Diego, California.

Peng, X., Z. Wang, Y. Yu, C. Tang, H. Lu, S. Xu, F. Chen, B. Mai, S. Chen, K. Li and

C. Yang. 2008. Temporal trends of hydrocarbons in sediment cores from the Pearl River Estuary and the northern South China Sea. Environ. Pollut. 156:442-448. Shacklette, H.T. and J.G. Boerngen. 1984. Element concentrations in soils and other surficial materials of the conterminous United States. U.S. Geological Survey Professional Paper 1270. U.S. Government Printing Office, Washington, D.C. 105 pp. Urban, J.D., D.S. Witkoff, A.T.G. Bunch, M.A. Harris, and L.C. Haws. 2014. A review of background dioxin concentrations in urban/suburban and rural soils across

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the United States: Implications for site assessments and the establishment of soil cleanup levels. Sci. Tot. Environ. 466-467 (2014):586-597. U.S. Environmental Protection Agency (EPA). 2000. Guidance for assessing chemical contaminant data for use in fish advisories, Volume 2. Risk assessment and fish consumption limits, Third edition EPA 823-B-00-008. U.S. Environmental Protection Agency, Office of Water. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2002. Procedures for the derivation of equilibrium partitioning sediment benchmarks (ESBs) for the protection of benthic organisms: PAH mixtures. EPA-600-R-02-013. U.S. Environmental Protection Agency, Office of Research and Development. Washington, D.C.

U.S. Environmental Protection Agency (EPA). 2004a. Preliminary remediation goals (PRGs), 2004 Update. U.S. Environmental Protection Agency, Region 9 Waste Program. http://www.epa.gov/region09/superdund/prg/ U.S. Environmental Protection Agency (EPA). 2004b. User’s guide and background technical document for USEPA Region 9’s Preliminary Remediation Goals (PRG) table. U.S. Environmental Protection Agency, Region 9 Waste Program. http://www.epa.gov/region09/superfund/prg/ U.S. Environmental Protection Agency (EPA). 2005. Sample holding time reevaluation. EPA/600/R-05/124. U.S. Environmental Protection Agency, Office of Research and Development. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2005a. Ecological soil screening levels for arsenic, Interim final. OSWER Directive 9285.7-62. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2005b. Ecological soil screening levels for barium, Interim final. OSWER Directive 9285.7-63. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2005c. Ecological soil screening levels for beryllium, Interim final. OSWER Directive 9285.7-64. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2005d. Ecological soil screening levels for cadmium, Interim final. OSWER Directive 9285.7-65. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C.

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U.S. Environmental Protection Agency (EPA). 2005e. Ecological soil screening levels for lead, Interim final. OSWER Directive 9285.7-70. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2005f. Ecological soil screening levels for vanadium, Interim final. OSWER Directive 9285.7-75. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007a. Ecological soil screening levels for copper, Interim final. OSWER Directive 9285.7-68, February 2007 Revision. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007b. Ecological soil screening levels for DDT and metabolites. OSWER Directive 9285.7-57. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007c. Ecological soil screening levels for dieldrin, Interim final. OSWER Directive 9285.7-56, April 2007 Revision. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007d. Ecological soil screening levels for manganese, Interim final. OSWER Directive 9285.7-71. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007e. Ecological soil screening levels for nickel, Interim final. OSWER Directive 9285.7-76. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007f. Ecological soil screening levels for polycyclic aromatic hydrocarbons (PAHs), Interim final. OSWER Directive 9285.7-78. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007g. Ecological soil screening levels for selenium, Interim final. OSWER Directive 9285.7-72. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2007h. Ecological soil screening levels for zinc, Interim final. OSWER Directive 9285.7-73. U.S. Environmental

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Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2008. Ecological soil screening levels for chromium, Interim final. OSWER Directive 9285.7-66, April 2008 Revision. U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. Washington, D.C. U.S. Environmental Protection Agency (EPA). 2010. Preliminary remediation goals (PRGs), 2010 Update. U.S. Environmental Protection Agency, Region 9 Waste Program. http://www.epa.gov/region9/superfund/prg/ U.S. Environmental Protection Agency, Region 4 (EPA, R4). 2001. Supplemental guidance to RAGs: Region 4 Bulletins, ecological risk assessment. Website version last updated November 30, 2001: http://www.epa.gov/region4/waste/ots/ecobul.htm U.S. Fish and Wildlife Service (USFWS). 2006. San Diego Bay National Wildlife Refuge, Sweetwater Marsh and South San Diego Bay Units, Final Comprehensive Conservation Plan and Environmental Impact Statement. San Diego National Wildlife Refuge Complex, Carlsbad, California. U.S. Fish and Wildlife Service (USFWS). 2010. Response plan for post-closure maintenance of the burn ash deposits, San Diego Bay National Wildlife Refuge - Sweetwater Marsh Unit, National City, California. U.S. Fish and Wildlife Service, San Diego National Wildlife refuge Complex. Carlsbad, California. 14 pp. Van den Berg, M., L. Birnbaum, A. T. C. Bosveld, B. Brunstrom, P. Cook, M. Feeley, J. P. Giesey, A. Hanberg, R. Hasegawa, S.W. Kennedy, T. Kubiak, J. C. Larsen, F. X. R. van Leeuwen, A. K. D. Liem, C. Nolt, R.E. Peterson, L. Poellinger, S. Safe, D. Schrenk, D. Tillit, M. Tysklind, M. Younes, F Waern and T. Zacharewski. 1998. Toxic equivalency factors (TEFs) for PCBs, PCDDs, PCDFs for humans and wildlife. Environ. Health Persp. 106(12):775-792. Zeeman, C.Q.T. 2004. Ecological Risk-Based Screening Levels for Contaminants in Sediments of San Diego Bay, Technical Memorandum CFWO-EC-TM-04-01. U.S. Fish and Wildlife Service, Carlsbad Fish and Wildlife Office, Carlsbad, CA. Zeeman, C., S.K. Taylor, J. Gibson, A. Little and C. Gorbics. 2008. F&G Street Marsh contaminants investigation - Final Report. U.S. Fish and Wildlife Service, Carlsbad Fish and Wildlife Office, Carlsbad, CA. 106pp.

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ATTACHMENTS A. Analytical results from Phase I (Composite Samples) B. Analytical Results from Phase II (Individual Samples)

OU3 0989

1

Pre-Cleanup Characterization of Contaminants in Fill on the F&G Street Marsh, Refuge Cleanup study 1C73.

ATTACHMENT A

Analytical results from Phase I (Composite Samples)

OU3 0990

F and G St. Marsh fill areaInorganics in Composite samples

Analyte Moisture Al As B Ba Be Cd Cr Cu Fe Hg Mg MnUnits % ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry

Sample #Number in composite

SurfaceF&G03-S 2 3.5 16,000 3.7 20 88.7 0.40 0.30 33 21 16,200 <0.10 3,790 329F&G04-S 3 5.2 16,800 3.6 10 82.3 0.40 0.40 25 28 17,900 <0.10 3,950 281F&G05-S 3 3.9 19,500 4.0 10 115 0.50 0.40 44 18 19,000 <0.10 5,020 347F&G06-S 3 4.5 16,600 3.2 20 92.5 0.40 0.50 49 64 15,400 <0.10 4,260 299F&G07-S 4 3.3 15,900 3.6 10 69.2 0.30 <0.20 59 11 15,200 <0.10 3,450 150F&G08-S 4 8.1 13,600 3.6 20 107 0.40 0.20 22 25 13,400 <0.10 3,820 210F&G09-S 4 4 17,800 3.9 20 99.1 0.40 <0.20 31 20 17,300 <0.10 4,080 392F&G10-S 4 7.2 18,100 3.3 20 124 0.40 0.40 24 20 18,700 0.2 5,330 298F&G11-S 4 6.1 13,200 4.0 20 86.2 0.30 0.40 24 32 14,500 <0.10 4,190 224F&G12-S 4 6.2 14,300 3.1 20 86.7 0.40 <0.20 29 31 15,000 <0.10 4,410 254F&G13-S 4 3.3 15,700 4.0 20 142 0.40 0.30 22 28 16,600 <0.10 4,290 513F&G14-S 1 1.9 12,300 3.2 <10 86.3 0.30 0.50 24 11 14,100 <0.10 3,270 130F&G15-S 2 4.5 12,200 6.3 10 90.4 0.30 0.40 43 21 13,600 <0.10 3,810 230F&G16-S 3 2.7 16,500 4.2 <10 115 0.79 1.7 1,040 175 21,400 0.56 4,080 391F&G17-S 1 3.7 13,300 2.4 32 78.6 0.30 0.20 21 15 17,700 <0.10 4,670 265F&G20-S 1 11 24,300 2.3 30 172 0.40 0.76 26 23 26,200 <0.10 8,840 436

Subsurface F&G03-D 1 15.3 21,000 3.6 20 107 0.40 1.1 23 27 21,400 <0.10 4,690 514F&G04-D 1 32 32,800 8.1 50 88.1 0.72 2.0 40 19 29,500 <0.10 8,450 567F&G05-D 2 6 25,200 3.7 20 106 0.50 0.50 25 26 23,700 <0.10 4,880 340F&G06-D 2 22.8 32,800 5.9 62 95 0.69 0.74 33 22 30,000 <0.10 8,620 525F&G07-D 3 14.9 28,200 5.0 47 91.9 0.60 0.50 30 17 25,100 <0.10 7,070 381F&G08-D 4 25.9 24,800 4.8 47 81.4 0.50 0.88 36 28 21,900 <0.10 6,560 597F&G09-D 4 16.9 22,300 3.1 33 98.8 0.50 0.30 21 16 18,900 <0.10 7,640 514F&G10-D 3 23 24,800 4.6 36 99 0.50 0.40 34 15 22,400 <0.10 6,280 346F&G11-D 2 17.3 22,600 6.7 37 115 0.50 0.93 33 38 22,500 0.3 5,870 436F&G12-D 4 27.5 28,200 6.0 60 78.8 0.60 0.75 30 25 26,100 <0.10 7,790 451F&G13-D 4 15.4 23,100 2.7 32 95.4 0.50 0.20 20 16 19,500 <0.10 5,380 540F&G14-D 1 7.3 13,500 3.4 10 121 0.30 0.30 17 14 15,400 <0.10 4,040 230F&G15-D 2 30.6 31,300 8.3 54 77.7 0.61 0.66 36 21 30,800 <0.10 8,680 473F&G16-D 3 6.9 10,500 4.6 <10 104 0.60 0.50 307 195 14,500 0.41 3,150 251F&G17-D 1 14.6 21,300 2.7 35 93 0.40 0.40 18 21 17,300 <0.10 6,210 401F&G20-D 1 24.7 5,510 3.0 10 23 <0.20 <0.20 6.2 4.3 5,560 <0.10 1,630 150

OU3 0991

F and G St. Marsh fill areaInorganics in Composite samples

AnalyteUnits

Sample #Number in composite

SurfaceF&G03-S 2F&G04-S 3F&G05-S 3F&G06-S 3F&G07-S 4F&G08-S 4F&G09-S 4F&G10-S 4F&G11-S 4F&G12-S 4F&G13-S 4F&G14-S 1F&G15-S 2F&G16-S 3F&G17-S 1F&G20-S 1

Subsurface F&G03-D 1F&G04-D 1F&G05-D 2F&G06-D 2F&G07-D 3F&G08-D 4F&G09-D 4F&G10-D 3F&G11-D 2F&G12-D 4F&G13-D 4F&G14-D 1F&G15-D 2F&G16-D 3F&G17-D 1F&G20-D 1

Mo Ni Pb Se Sr V Znug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry ug/g dry

<5.0 10 64 <0.50 21 40 59<5.0 10 110 <0.50 21 43 77<5.0 23 58 <0.50 28 45 54<5.0 26 210 <0.50 26 39 76<5.0 30 18 <0.50 26 37 31<5.0 15 140 <0.50 23 33 67<5.0 19 330 <0.50 29 42 77<5.0 23 29 <0.50 32 46 66<5.0 18 400 <0.50 31 35 100<5.0 21 190 <0.50 30 38 76<5.0 18 110 <0.50 34 42 82<5.0 10 32 <0.50 22 32 205<5.0 32 170 <0.50 32 33 13019 370 1,980 4.4 243 46 1110

<5.0 10 38 <0.50 27 46 49<5.0 10 33 <0.50 43 70 72

<5.0 15 170 <0.50 24 56 150<5.0 30 21 0.7 37 66 67<5.0 10 210 <0.50 24 53 91<5.0 16 130 <0.50 38 60 74<5.0 16 34 <0.50 31 58 59<5.0 22 49 <0.50 27 55 61<5.0 10 78 <0.50 73 53 50<5.0 24 68 <0.50 30 55 61<5.0 18 681 <0.50 45 46 140<5.0 20 230 <0.50 35 58 82<5.0 10 23 <0.50 32 54 44<5.0 10 22 <0.50 19 39 57<5.0 18 92 <0.50 32 60 74

7 100 509 4.3 83 35 2660<5.0 10 190 <0.50 57 53 84<5.0 <5.0 10 <0.50 6.4 12 19

OU3 0992

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

F&G

03-D

subs

urfa

ce

F&G

03-S

surfa

ce

F&G

04-D

subs

urfa

ce

F&G

04-S

surfa

ce

F&G

05-D

subs

urfa

ce

F&G

05-S

surfa

ce

UnitsMoisture % 15.95 3.6 30.46 5.1 3.56 3.57Aldrin ng/g dw 0.468 < 0.121 < 0.174 < 0.130 < 0.124 < 0.121alpha BHC ng/g dw < 0.145 < 0.121 < 0.174 < 0.130 0.53 < 0.121beta BHC ng/g dw 0.359 < 0.121 < 0.174 < 0.130 < 0.124 < 0.121delta BHC ng/g dw < 0.145 < 0.121 < 0.174 < 0.130 < 0.124 < 0.121gamma BHC ng/g dw 0.337 < 0.121 < 0.174 < 0.130 < 0.124 < 0.121alpha chlordane ng/g dw 52.7 4.67 0.361 5.79 18.4 4.32cis-nonachlor ng/g dw 8.84 2.04 < 0.174 2.40 5.53 1.08gamma chlordane ng/g dw 75.1 4.74 0.65 6.76 24.1 4.92oxychlordane ng/g dw 4.48 < 0.121 < 0.174 < 0.130 < 0.124 < 0.121trans-nonachlor ng/g dw 38.0 3.63 0.430 3.98 14.2 2.57o,p'-DDD ng/g dw 217 7.16 1.95 6.54 6.12 2.09o,p'-DDE ng/g dw 17.6 1.15 0.464 0.871 0.455 0.337o,p'-DDT ng/g dw 8.51 28 0.79 11.0 9.42 8.02p,p'-DDD ng/g dw 564 18.7 4.76 13.6 20.0 9.6p,p'-DDE ng/g dw 103 96.2 23.6 39.1 30.4 26.5p,p'-DDT ng/g dw 24.9 143 2.05 62.3 38.4 39.8dieldrin ng/g dw 10.4 1.53 < 0.174 1.52 < 0.124 0.70endosulfan II ng/g dw < 0.145 1.44 < 0.174 1.21 0.57 0.423endrin ng/g dw 1.38 1.31 < 0.174 0.55 2.02 0.441HCB ng/g dw < 0.145 1.59 < 0.174 < 0.130 < 0.124 < 0.121Heptachlor ng/g dw 3.29 0.285 < 0.174 0.290 < 0.124 0.90heptachlor epoxide ng/g dw 1.00 0.64 < 0.174 0.169 0.138 0.133mirex ng/g dw < 0.145 0.360 < 0.174 0.166 < 0.124 < 0.121PCB-TOTAL ng/g dw 353 75.0 20.7 94.8 111 36.0pentachloro-anisole ng/g dw < 0.145 0.271 < 0.174 1.14 < 0.124 0.1651,2,3,4-Tetrachlorobenzene ng/g dw 0.182 < 0.121 < 0.174 < 0.130 0.271 0.1651,2,4,5-Tetrachlorobenzene ng/g dw < 0.145 0.57 0.290 0.360 < 0.124 0.177toxaphene ng/g dw < 1.45 < 0.121 < 1.74 < 0.130 < 0.124 < 0.121chlorpyrifos ng/g dw 1.67 0.461 < 0.174 0.226 0.55 < 0.121total DDTs (with 0.5 dl) ng/g dw 935.1 293.9 33.6 133.5 104.8 86.4total Chlordanes (with 0.5 dl) ng/g dw 179.1 15.2 1.6 19.0 62.2 13.0

naphthalene ng/g dw 33.5 2.70 < 2.09 5.53 8.21 3.151-methylnaphthalene ng/g dw 41.2 < 1.45 < 2.09 3.09 2.98 < 1.452-methylnaphthalene ng/g dw 32.8 2.13 < 2.09 4.56 5.57 2.092,6-dimethylnaphthalene ng/g dw 15.6 < 1.45 < 2.09 1.78 2.86 < 1.45C1-naphthalenes ng/g dw 74.0 3.10 < 2.09 7.65 8.55 3.041,6,7-Trimethyl-naphthalene ng/g dw 7.6 < 1.45 < 2.09 1.58 3.11 < 1.45C2-naphthalenes ng/g dw 43.5 1.80 < 2.09 4.75 8.67 1.79C3-naphthalenes ng/g dw 28.1 2.44 < 2.09 4.10 11.4 1.66C4-naphthalenes ng/g dw 26.3 4.85 < 2.09 3.29 10.1 1.96biphenyl ng/g dw 2.39 < 1.45 < 2.09 < 1.56 < 1.48 < 1.45acenaphthalene ng/g dw 70.6 1.77 < 2.09 4.83 8.16 1.94acenaphthene ng/g dw 4.27 < 1.45 < 2.09 14.1 4.05 < 1.45fluorene ng/g dw 14.7 < 1.45 < 2.09 11.7 4.08 < 1.45C1-fluorenes ng/g dw 39.3 7.32 < 2.09 4.13 10.9 4.50C2-fluorenes ng/g dw 30.5 4.06 < 2.09 8.94 7.68 3.41C3-fluorenes ng/g dw 65.8 10.0 3.34 40.2 23.1 12.8phenanthrene ng/g dw 81.0 12.7 2.13 179 57.0 13.81-methylphenanthrene ng/g dw 27.5 2.31 < 2.09 13.8 9.29 2.23anthracene ng/g dw 150 4.91 < 2.09 33.9 22.2 4.45

OU3 0993

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

F&G

03-D

subs

urfa

ce

F&G

03-S

surfa

ce

F&G

04-D

subs

urfa

ce

F&G

04-S

surfa

ce

F&G

05-D

subs

urfa

ce

F&G

05-S

surfa

ce

C1-Phenanthrenes & Anthracenes ng/g dw 94.0 8.44 < 2.09 47.2 32.4 8.04C2-Phenanthrenes & Anthracenes ng/g dw 92.2 8.59 < 2.09 26.9 28.7 11.8C3-Phenanthrenes & Anthracenes ng/g dw 82.6 13.5 2.30 21.7 32.4 13.1C4-Phenanthrenes & Anthracenes ng/g dw 92.4 24.9 2.17 50.8 48.9 10.9fluoranthene ng/g dw 337 27.5 5.81 369 180 40.7pyrene ng/g dw 610 30.1 7.01 358 177 42.9C1-Fluoranthenes & Pyrenes ng/g dw 382 21.8 3.18 91.4 79.3 19.0chrysene ng/g dw 313 16.8 3.42 108 74.3 31.1C1-chrysenes ng/g dw 166 15.9 2.39 41.2 38.4 24.2C2-chrysenes ng/g dw 141 42.3 3.29 38.7 57.8 37.5C3-chrysenes ng/g dw 58 26.7 < 2.09 17.2 29.3 15.6C4-chrysenes ng/g dw 15.1 7.85 < 2.09 3.61 10.2 4.11Benzo(a)anthracene ng/g dw 115 7.21 < 2.09 85.6 67.0 15.3benzo(b)fluoranthene ng/g dw 224 18.4 5.18 140 101 40.5benzo(k)fluoranthene ng/g dw 64.1 3.54 < 2.09 43.2 26.9 11.5benzo(a)pyrene ng/g dw 140 11.6 4.06 121 75.7 26.9benzo(e)pyrene ng/g dw 132 22.7 3.86 74.9 61.9 28.7perylene ng/g dw 85.7 103 5.47 54.6 60.2 22.9Dibenz(a,h)anthracene ng/g dw 17.7 4.96 < 2.09 20.1 12.3 6.03indeno(1,2,3-cd)pyrene ng/g dw 67.1 10.8 3.68 91.8 59.6 31.8benzo(g,h,i)perylene ng/g dw 72.1 32.3 3.18 81.9 59.0 33.1dibenzothiophene ng/g dw 5.26 < 1.45 < 2.09 6.75 2.99 < 1.45C1-dibenzothiophenes ng/g dw 11.1 1.75 < 2.09 4.43 4.76 < 1.45C2-dibenzothiophenes ng/g dw 24.5 4.14 < 2.09 6.54 8.82 3.86C3-dibenzothiophenes ng/g dw 33.9 5.64 < 2.09 6.19 12.1 4.75

Sum LPAHs (with 0.5 dl) ng/g dw 1,150 121 26 495 351 106Sum HPAHs (with 0.5 dl) ng/g dw 3,014 415 58 1,766 1,198 442Total PAH (with 0.5 dl) ng/g dw 4,164 536 85 2,260 1,550 548

2,3,7,8-TCDD ng/g dw 0.0018 < 0.0004 <0.0006 < 0.0004 <0.0003 < 0.00041,2,3,7,8-PeCDD ng/g dw 0.0038 < 0.0021 < 0.0028 < 0.0018 < 0.0017 < 0.00181,2,3,4,7,8-HxCDD ng/g dw < 0.0018 < 0.0021 < 0.0028 < 0.0018 < 0.0017 < 0.00181,2,3,6,7,8-HxCDD ng/g dw 0.0241 < 0.0021 0.0050 < 0.0018 0.0041 < 0.00181,2,3,7,8,9-HxCDD ng/g dw 0.0111 < 0.0021 0.0032 < 0.0018 0.0053 < 0.00182,3,4,6,7,8-HxCDF ng/g dw 0.0333 < 0.0021 < 0.0028 0.0032 0.0024 < 0.00181,2,3,4,6,7,8-HpCDD ng/g dw 0.4142 0.0453 0.0183 0.0742 0.0610 0.0340OCDD ng/g dw 4.4286 0.2779 0.0629 0.8320 0.5734 0.3196

2,3,7,8-TCDF ng/g dw 0.0168 < 0.0004 0.0023 < 0.0004 0.0037 < 0.00041,2,3,7,8-PeCDF ng/g dw 0.0249 < 0.0021 < 0.0028 < 0.0018 < 0.0017 < 0.00182,3,4,7,8-PeCDF ng/g dw 0.0083 < 0.0021 < 0.0028 < 0.0018 0.0021 < 0.00181,2,3,4,7,8-HxCDF ng/g dw 0.0100 < 0.0021 < 0.0028 < 0.0018 < 0.0017 < 0.00181,2,3,6,7,8-HxCDF ng/g dw 0.0127 < 0.0021 < 0.0028 0.0019 < 0.0017 < 0.00181,2,3,7,8,9-HxCDF ng/g dw < 0.0018 < 0.0021 < 0.0028 < 0.0018 < 0.0017 < 0.00181,2,3,4,6,7,8-HpCDF ng/g dw 0.0701 0.0087 0.0092 0.0171 0.0107 < 0.00181,2,3,4,7,8,9-HpCDF ng/g dw 0.0044 < 0.0021 < 0.0028 < 0.0018 < 0.0017 < 0.0018OCDF ng/g dw 0.1099 0.0065 < 0.0056 0.0295 0.0144 < 0.0035Sum TEQ* (mammals) (detects only) ng/g dw 0.027139 0.000569 0.001332 0.001505 0.003357 0.000372

OU3 0994

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

UnitsMoisture %Aldrin ng/g dwalpha BHC ng/g dwbeta BHC ng/g dwdelta BHC ng/g dwgamma BHC ng/g dwalpha chlordane ng/g dwcis-nonachlor ng/g dwgamma chlordane ng/g dwoxychlordane ng/g dwtrans-nonachlor ng/g dwo,p'-DDD ng/g dwo,p'-DDE ng/g dwo,p'-DDT ng/g dwp,p'-DDD ng/g dwp,p'-DDE ng/g dwp,p'-DDT ng/g dwdieldrin ng/g dwendosulfan II ng/g dwendrin ng/g dwHCB ng/g dwHeptachlor ng/g dwheptachlor epoxide ng/g dwmirex ng/g dwPCB-TOTAL ng/g dwpentachloro-anisole ng/g dw1,2,3,4-Tetrachlorobenzene ng/g dw1,2,4,5-Tetrachlorobenzene ng/g dwtoxaphene ng/g dwchlorpyrifos ng/g dwtotal DDTs (with 0.5 dl) ng/g dwtotal Chlordanes (with 0.5 dl) ng/g dw

naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dwC1-naphthalenes ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dw

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28.5 4.38 12.04 3.26 27.01 6.36< 0.168 < 0.129 0.231 < 0.125 < 0.185 0.452

0.75 < 0.129 < 0.141 < 0.125 < 0.185 < 0.124< 0.168 < 0.129 < 0.141 < 0.125 < 0.185 < 0.124< 0.168 < 0.129 < 0.141 < 0.125 < 0.185 < 0.124< 0.168 < 0.129 < 0.141 < 0.125 < 0.185 < 0.124

9.64 20.2 6.22 2.19 2.43 13.12.88 8.86 2.09 1.18 0.78 4.5812.1 24.6 7.48 2.59 2.88 15.3

< 0.168 0.167 0.241 < 0.125 < 0.185 0.1357.16 17.2 4.72 1.59 1.72 9.534.15 11.8 3.28 1.12 0.91 3.70

< 0.168 2.54 0.864 0.164 < 0.185 0.4235.66 15.1 0.779 7.08 < 0.185 5.5610.0 26.6 12.8 6.27 2.45 10.839.6 70.8 21.9 9.62 3.45 14.215.7 68.6 4.52 19.7 0.610 29.0

< 0.168 7.84 5.75 0.754 0.46 3.07< 0.168 2.16 < 0.141 0.415 < 0.185 1.18< 0.168 5.81 < 0.141 < 0.125 < 0.185 0.62< 0.168 0.190 < 0.141 < 0.125 < 0.185 < 0.124< 0.168 0.480 < 0.141 0.133 < 0.185 0.561< 0.168 1.02 < 0.141 < 0.125 < 0.185 0.355< 0.168 < 0.129 < 0.141 < 0.125 < 0.185 0.221

50.1 917 30.5 21.9 47.8 126< 0.168 0.232 < 0.141 < 0.125 < 0.185 < 0.124< 0.168 < 0.129 < 0.141 < 0.125 < 0.185 < 0.1240.324 0.467 0.579 0.287 0.275 0.308

< 0.168 < 0.129 < 1.41 < 1.25 < 1.85 < 1.24< 0.168 0.271 < 0.141 < 0.125 < 0.185 0.302

75.2 195.6 44.1 43.9 7.6 63.731.9 71.1 20.8 7.6 7.9 42.6

4.10 7.07 2.43 1.65 14.6 10.44.52 3.88 < 1.69 < 1.50 53.4 5.827.15 6.86 2.56 < 1.50 47.0 13.85.17 2.25 < 1.69 < 1.50 102 2.6611.7 10.7 3.75 1.63 100 19.64.98 < 1.54 2.68 < 1.50 183 1.7813.9 5.84 3.77 < 1.50 305 6.2215.1 3.77 7.93 1.57 531 5.6211.1 3.84 11.7 1.85 487 6.26

< 2.01 < 1.54 < 1.69 < 1.50 5.70 2.68< 2.01 6.08 < 1.69 < 1.50 5.49 6.18< 2.01 < 1.54 < 1.69 < 1.50 16.0 3.882.08 1.94 1.86 < 1.50 56.5 3.377.01 8.29 6.23 7.19 182 11.911.1 2.94 11.6 9.02 258 11.725.0 13.1 20.3 12.3 235 37.513.9 37.8 10.6 9.73 51.5 56.45.05 5.61 4.15 3.42 44.5 13.35.22 13.9 3.35 6.09 10.1 15.3

OU3 0995

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

C1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dw

Sum LPAHs (with 0.5 dl) ng/g dwSum HPAHs (with 0.5 dl) ng/g dwTotal PAH (with 0.5 dl) ng/g dw

2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw

2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dwSum TEQ* (mammals) (detects only) ng/g dw

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17.7 19.0 13.6 9.66 139 43.935.7 13.8 22.3 12.3 193 41.875.3 11.4 25.3 17.2 175 64.967.9 15.3 18.1 25.2 81.3 74.731.9 94.8 20.7 21.4 7.22 22334.1 106 24.5 22.4 13.3 20438.5 38.8 19.0 23.5 36.0 75.624.6 48.5 17.8 11.5 24.0 71.335.6 30.1 23.3 12.1 69.0 51.177.6 37.7 32.9 21.4 146 80.029.1 17.1 15.2 15.7 50.5 36.17.76 6.44 3.84 4.72 10.6 8.9013.7 31.3 7.39 11.2 9.95 38.925.2 72.2 19.2 15.0 9.60 82.06.57 20.5 3.77 4.18 < 2.22 21.816.8 64.3 11.9 12.4 7.77 53.217.1 52.3 15.7 12.0 11.9 50.353.2 40.4 20.7 34.9 73.0 64.24.42 10.5 2.43 3.10 4.42 11.910.9 49.7 9.80 9.17 5.51 49.113.7 61.4 7.43 14.3 7.48 49.3

< 2.01 1.86 < 1.69 < 1.50 18.7 2.285.33 2.41 4.70 < 1.50 59.1 5.3114.1 3.21 10.1 4.34 96.7 10.625.3 3.17 13.7 5.52 93.1 19.3

346 196 176 127 3,275 459486 793 285 261 754 1,208833 989 461 387 4,030 1,668

< 0.0004 < 0.0004 <0.0003 < 0.0004 <0.0003 <0.0004< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 0.0118 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 0.0039 0.0039 < 0.0021 < 0.0015 < 0.0020< 0.0021 0.0045 < 0.0015 < 0.0021 < 0.0015 < 0.00200.0642 0.3615 0.0285 0.0217 0.0396 0.03790.6094 2.8999 0.2451 0.2807 0.3547 0.7315

< 0.0004 < 0.0004 <0.0003 < 0.0004 0.0004 <0.0004< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.0020< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.00200.0112 0.1379 < 0.0015 0.0072 0.0047 < 0.0020

< 0.0021 < 0.0020 < 0.0015 < 0.0021 < 0.0015 < 0.00200.0126 0.3794 < 0.0030 < 0.0042 0.0048 < 0.0039

0.000816 0.007345 0.000696 0.000318 0.000520 0.000452

OU3 0996

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

UnitsMoisture %Aldrin ng/g dwalpha BHC ng/g dwbeta BHC ng/g dwdelta BHC ng/g dwgamma BHC ng/g dwalpha chlordane ng/g dwcis-nonachlor ng/g dwgamma chlordane ng/g dwoxychlordane ng/g dwtrans-nonachlor ng/g dwo,p'-DDD ng/g dwo,p'-DDE ng/g dwo,p'-DDT ng/g dwp,p'-DDD ng/g dwp,p'-DDE ng/g dwp,p'-DDT ng/g dwdieldrin ng/g dwendosulfan II ng/g dwendrin ng/g dwHCB ng/g dwHeptachlor ng/g dwheptachlor epoxide ng/g dwmirex ng/g dwPCB-TOTAL ng/g dwpentachloro-anisole ng/g dw1,2,3,4-Tetrachlorobenzene ng/g dw1,2,4,5-Tetrachlorobenzene ng/g dwtoxaphene ng/g dwchlorpyrifos ng/g dwtotal DDTs (with 0.5 dl) ng/g dwtotal Chlordanes (with 0.5 dl) ng/g dw

naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dwC1-naphthalenes ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dw

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17.43 3.64 31.79 6.94 30.06 5.480.254 < 0.124 < 0.188 < 0.129 < 0.192 < 0.129

< 0.164 < 0.124 < 0.188 < 0.129 < 0.192 < 0.129< 0.164 < 0.124 < 0.188 < 0.129 < 0.192 < 0.129< 0.164 < 0.124 < 0.188 < 0.129 < 0.192 < 0.129< 0.164 < 0.124 < 0.188 < 0.129 0.436 < 0.129

8.19 26.3 14.7 2.14 60.3 76.52.64 8.30 7.54 1.13 22.4 26.510.6 29.8 13.7 2.42 78.3 95.2

< 0.164 0.369 0.847 0.322 5.82 2.575.31 19.6 13.6 1.75 46 58.01.27 3.68 3.82 1.33 12.9 9.89

< 0.164 0.330 1.67 0.400 1.89 0.870.580 5.01 1.17 3.45 0.96 5.154.83 10.4 12.9 4.62 35.6 30.68.70 14.5 24.1 11.1 21.1 25.72.14 28.1 4.72 10.9 4.57 28.31.05 4.50 2.92 1.21 11.1 13.9

< 0.164 1.52 < 0.188 0.420 0.397 < 0.129< 0.164 1.16 < 0.188 0.192 0.287 0.50< 0.164 < 0.124 0.248 0.206 0.495 0< 0.164 1.04 0.457 < 0.129 2.96 1.68< 0.164 0.743 0.239 0.149 1.03 2.09< 0.164 < 0.124 < 0.188 < 0.129 0.545 < 0.129

34.2 130 384 270 407 234< 0.164 < 0.124 < 0.188 < 0.129 0.721 < 0.129< 0.164 < 0.124 < 0.188 < 0.129 < 0.192 < 0.129< 0.164 0.709 0.522 0.266 2.19 < 0.129< 1.64 < 1.24 < 0.188 < 1.29 < 1.92 < 0.129< 0.164 0.569 < 0.188 < 0.129 0.758 0.86

17.6 62.0 48.4 31.7 77.1 100.526.8 84.4 50.3 7.8 212.6 258.8

12.9 9.02 8.70 1.95 20.7 6.87< 1.96 3.59 6.07 < 1.55 13.1 2.392.02 9.34 9.30 < 1.55 19.5 5.09

< 1.96 3.13 8.15 < 1.55 4.52 1.682.97 12.9 15.4 2.23 32.6 7.48

< 1.96 1.60 11.5 < 1.55 7.31 < 1.55< 1.96 7.56 24.6 1.83 54.6 4.852.14 5.27 34.1 1.97 67.0 3.92

< 1.96 5.40 28.4 2.27 91.2 8.97< 1.96 1.77 4.05 < 1.55 < 2.31 1.80< 1.96 8.31 5.22 5.20 3.08 5.80< 1.96 3.57 2.42 < 1.55 5.16 11.7< 1.96 3.46 8.06 1.63 10.6 8.142.65 6.13 19.4 5.20 22.4 33.33.20 12.9 63.5 6.62 47.5 14.76.36 25.4 36.1 12.1 48.4 34.37.99 65.8 33.5 21.6 187 122

< 1.96 9.43 10.6 4.54 45.7 16.73.52 31.9 17.9 15.3 62.1 46.5

OU3 0997

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

C1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dw

Sum LPAHs (with 0.5 dl) ng/g dwSum HPAHs (with 0.5 dl) ng/g dwTotal PAH (with 0.5 dl) ng/g dw

2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw

2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dwSum TEQ* (mammals) (detects only) ng/g dw

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6.20 33.2 33.4 17.1 151 55.67.76 25.4 39.9 15.7 213 48.78.89 31.4 32.6 13.5 233 70.86.19 48.8 16.9 13.2 187 70.218.1 184 191 86.7 297 31619.6 194 198 74.9 341 31414.4 93.1 92.8 35.0 248 13211.4 67.3 152 25.7 196 12813.7 41.3 80.5 14.9 510 80.229.1 57.8 54.6 14.4 454 86.814.3 22.8 21.2 7.48 185 37.44.20 9.44 4.56 2.89 49.6 10.76.77 53.5 162 27.7 117 10618.5 86.8 210 41.2 165 1573.31 26.9 66.0 11.5 37.7 43.212.0 79.1 188 34.4 124 15015.4 64.1 95.6 21.7 127 93.832.1 84.8 56.2 17.1 144 85.82.94 14.2 18.3 5.56 20.2 23.511.2 67.6 84.8 24.4 68.2 97.919.0 76.0 68.5 23.1 95.1 96.2

< 1.96 3.28 2.38 < 1.55 21.2 5.05< 1.96 4.20 8.21 1.98 45.5 6.173.08 5.58 16.9 3.34 85.5 12.34.15 7.97 < 2.25 2.48 90.9 21.4

81 365 470 147 1,527 582255 1,244 1,771 477 3,423 2,004336 1,609 2,241 624 4,950 2,586

< 0.0004 < 0.0004 < 0.0004 <0.0005 <0.0006 < 0.0004< 0.0022 < 0.0018 < 0.0024 < 0.0023 < 0.0028 < 0.0019< 0.0022 < 0.0018 < 0.0024 < 0.0023 < 0.0028 < 0.0019< 0.0022 0.0024 < 0.0024 < 0.0023 0.0083 < 0.0019< 0.0022 < 0.0018 0.0028 < 0.0023 < 0.0028 0.0020< 0.0022 < 0.0018 < 0.0024 < 0.0023 < 0.0028 0.00380.0627 0.1156 0.0405 0.0344 0.1728 0.09420.5437 1.4404 0.2840 0.7017 1.4123 1.0486

< 0.0004 0.0010 0.0013 0.0006 0.0137 < 0.0004< 0.0022 < 0.0018 < 0.0024 < 0.0023 0.0069 < 0.0019< 0.0022 0.0050 < 0.0024 < 0.0023 < 0.0028 0.0060< 0.0022 < 0.0018 < 0.0024 < 0.0023 0.0053 < 0.0019< 0.0022 < 0.0018 < 0.0024 < 0.0023 < 0.0028 < 0.0019< 0.0022 < 0.0018 < 0.0024 < 0.0023 < 0.0028 < 0.00190.0091 0.0162 < 0.0024 < 0.0023 0.0250 0.0227

< 0.0022 < 0.0018 < 0.0024 < 0.0023 < 0.0028 < 0.00190.0102 0.0438 < 0.0048 0.0266 0.0160 0.0415

0.000773 0.004303 0.000844 0.000481 0.005195 0.004874

OU3 0998

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

UnitsMoisture %Aldrin ng/g dwalpha BHC ng/g dwbeta BHC ng/g dwdelta BHC ng/g dwgamma BHC ng/g dwalpha chlordane ng/g dwcis-nonachlor ng/g dwgamma chlordane ng/g dwoxychlordane ng/g dwtrans-nonachlor ng/g dwo,p'-DDD ng/g dwo,p'-DDE ng/g dwo,p'-DDT ng/g dwp,p'-DDD ng/g dwp,p'-DDE ng/g dwp,p'-DDT ng/g dwdieldrin ng/g dwendosulfan II ng/g dwendrin ng/g dwHCB ng/g dwHeptachlor ng/g dwheptachlor epoxide ng/g dwmirex ng/g dwPCB-TOTAL ng/g dwpentachloro-anisole ng/g dw1,2,3,4-Tetrachlorobenzene ng/g dw1,2,4,5-Tetrachlorobenzene ng/g dwtoxaphene ng/g dwchlorpyrifos ng/g dwtotal DDTs (with 0.5 dl) ng/g dwtotal Chlordanes (with 0.5 dl) ng/g dw

naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dwC1-naphthalenes ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dw

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25.7 4.53 16.01 3.02 8.46 1.500 < 0.124 < 0.148 0.345 < 0.134 < 0.126

< 0.169 < 0.124 < 0.148 < 0.123 < 0.134 < 0.126< 0.169 < 0.124 < 0.148 < 0.123 < 0.134 < 0.126< 0.169 < 0.124 < 0.148 < 0.123 < 0.134 < 0.126< 0.169 < 0.124 < 0.14816 < 0.123 < 0.134 < 0.126

8.50 10.3 1.04 5.98 2.32 < 0.1262.93 3.62 0.55 2.88 1.08 0.26210.7 11.8 1.27 7.38 2.92 < 0.126

< 0.169 0.205 < 0.148 < 0.123 < 0.134 < 0.1266.52 7.04 0.79 5.29 1.94 < 0.1261.67 2.44 0.206 1.96 0.437 < 0.126

< 0.169 0.205 < 0.148 < 0.123 < 0.134 < 0.1260.341 9.09 0.480 6.73 1.38 0.555.39 10.0 0.621 5.12 1.41 0.1955.23 10.1 0.718 5.07 1.44 < 0.1261.09 36.9 1.69 23.4 4.37 0.4461.87 4.36 0.574 1.86 1.03 < 0.126

< 0.169 < 0.124 < 0.14816 0.690 < 0.134 < 0.126< 0.169 0.372 < 0.14816 0.836 < 0.134 < 0.126< 0.169 0.205 < 0.148 0.229 < 0.134 < 0.126< 0.169 0.73 < 0.148 0.239 < 0.134 < 0.1260.195 0.300 < 0.148 0.227 < 0.134 < 0.126

< 0.169 0.172 < 0.148 0.243 < 0.134 < 0.12636.5 92.8 14.6 45.0 63.6 59.5

< 0.169 < 0.124 0.207 < 0.123 < 0.134 < 0.126< 0.169 < 0.124 < 0.148 < 0.123 < 0.134 < 0.1260.447 0.233 0.552 0.66 0.249 0.177< 1.69 < 1.244 < 1.48 < 1.23 < 1.34 < 1.26< 0.169 0.129 < 0.148 0.155 < 0.134 < 0.126

13.8 68.7 3.8 42.4 9.1 1.428.7 33.0 3.7 21.6 8.3 0.5

3.14 5.58 < 1.78 4.95 2.21 < 1.518.75 3.18 < 1.78 2.11 < 1.60 < 1.512.37 7.11 < 1.78 5.32 < 1.60 < 1.517.60 2.05 < 1.78 1.80 < 1.60 < 1.5111.1 10.3 < 1.78 7.43 2.01 < 1.519.88 < 1.49 1.93 < 1.48 < 1.60 < 1.5125.0 6.14 2.90 4.24 1.68 < 1.5131.1 4.03 5.68 4.06 3.01 < 1.5118.1 3.43 4.90 4.47 4.21 < 1.51

< 2.03 < 1.49 < 1.78 < 1.48 < 1.60 < 1.51< 2.03 2.95 < 1.78 3.04 5.16 < 1.51< 2.03 2.68 < 1.78 1.74 < 1.60 < 1.514.79 2.72 < 1.78 1.57 < 1.60 < 1.518.92 9.51 4.17 8.34 5.63 < 1.5113.5 6.53 5.49 6.30 5.51 < 1.5114.6 15.1 9.68 12.4 < 1.60 < 1.5112.4 42.0 2.60 36.4 9.20 < 1.513.14 6.02 < 1.78 5.94 3.05 < 1.514.29 13.1 3.49 11.6 8.05 < 1.51

OU3 0999

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

C1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dw

Sum LPAHs (with 0.5 dl) ng/g dwSum HPAHs (with 0.5 dl) ng/g dwTotal PAH (with 0.5 dl) ng/g dw

2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw

2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dwSum TEQ* (mammals) (detects only) ng/g dw

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10.9 21.4 6.48 19.8 12.1 < 1.5112.1 18.4 10.1 20.0 12.9 < 1.5110.0 24.6 15.9 38.8 22.0 < 1.516.68 34.1 16.4 71.2 63.4 < 1.5132.3 110 2.73 127 39.8 2.4433.1 119 4.65 138 53.3 2.6416.6 58.4 12.5 73.6 47.7 < 1.5120.1 49.8 7.07 48.8 27.7 1.6117.2 30.8 15.4 39.9 39.0 < 1.5121.4 50.7 49.2 82.5 112 2.097.52 26.8 24.5 42.5 67.4 < 1.512.09 8.84 5.93 14.3 20.1 < 1.5113.5 32.9 2.38 30.4 17.6 < 1.5124.9 55.6 7.90 56.4 30.3 2.386.06 17.0 < 1.78 15.7 5.77 < 1.5118.9 48.6 4.17 39.7 17.8 1.66

< 2.03 41.7 11.6 43.7 29.8 < 1.5113.2 75.6 73.3 125 242 2.022.58 8.61 1.92 9.02 < 1.60 < 1.5111.7 39.2 2.18 31.7 4.57 1.6014.8 47.2 11.7 48.3 23.7 1.682.30 2.04 < 1.78 1.92 < 1.60 < 1.514.55 2.34 3.44 3.03 2.23 < 1.516.27 5.13 7.43 7.72 5.88 < 1.514.91 9.09 11.0 13.2 9.26 < 1.51

221 243 98 273 167 20275 840 260 993 798 28496 1,082 359 1,266 965 48

< 0.0004 < 0.0004 <0.0003 <0.0005 <0.0005 < 0.0004< 0.0019 < 0.0021 < 0.0016 < 0.0025 < 0.0024 < 0.0022< 0.0019 < 0.0021 < 0.0016 < 0.0025 < 0.0024 < 0.0022< 0.0019 0.0049 < 0.0016 < 0.0025 0.0027 < 0.0022< 0.0019 < 0.0021 < 0.0016 < 0.0025 0.0040 < 0.00220.0022 0.0200 < 0.0016 0.0027 0.0049 < 0.00220.0556 0.0387 0.0155 0.0365 0.0177 0.00590.5964 0.3916 0.1318 0.3475 0.1412 0.0456

< 0.0004 < 0.0004 0.0005 <0.0005 <0.0005 0.0022< 0.0019 0.0037 < 0.0016 < 0.0025 0.0027 < 0.0022< 0.0019 < 0.0021 < 0.0016 < 0.0025 < 0.0024 < 0.0022< 0.0019 0.0090 < 0.0016 < 0.0025 < 0.0024 < 0.0022< 0.0019 0.0089 < 0.0016 < 0.0025 < 0.0024 < 0.0022< 0.0019 < 0.0021 < 0.0016 < 0.0025 0.0028 < 0.00220.1000 0.0160 0.0029 0.0086 0.0068 < 0.0022

< 0.0019 < 0.0021 < 0.0016 < 0.0025 0.0026 < 0.00220.0141 0.0205 0.0032 0.0096 0.0066 < 0.0044

0.001832 0.005054 0.000245 0.000754 0.001875 0.000286

OU3 1000

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

UnitsMoisture %Aldrin ng/g dwalpha BHC ng/g dwbeta BHC ng/g dwdelta BHC ng/g dwgamma BHC ng/g dwalpha chlordane ng/g dwcis-nonachlor ng/g dwgamma chlordane ng/g dwoxychlordane ng/g dwtrans-nonachlor ng/g dwo,p'-DDD ng/g dwo,p'-DDE ng/g dwo,p'-DDT ng/g dwp,p'-DDD ng/g dwp,p'-DDE ng/g dwp,p'-DDT ng/g dwdieldrin ng/g dwendosulfan II ng/g dwendrin ng/g dwHCB ng/g dwHeptachlor ng/g dwheptachlor epoxide ng/g dwmirex ng/g dwPCB-TOTAL ng/g dwpentachloro-anisole ng/g dw1,2,3,4-Tetrachlorobenzene ng/g dw1,2,4,5-Tetrachlorobenzene ng/g dwtoxaphene ng/g dwchlorpyrifos ng/g dwtotal DDTs (with 0.5 dl) ng/g dwtotal Chlordanes (with 0.5 dl) ng/g dw

naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dwC1-naphthalenes ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dw

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30.4 4.17 6.09 2.75 14.52 4.290.247 < 0.127 0.319 < 0.126 0.54 < 0.121

< 0.175 < 0.127 < 0.140 < 0.126 < 0.149 < 0.121< 0.175 0.171 < 0.140 < 0.126 < 0.149 < 0.121< 0.175 < 0.127 < 0.140 < 0.126 < 0.149 < 0.121< 0.175 < 0.127 0.532 < 0.126 < 0.149 < 0.121

12.2 26.2 4.71 2.52 10.5 3.913.72 9.07 19.1 22.9 3.87 2.4015.3 30.3 6.94 4.53 12.0 4.18

< 0.175 0.375 < 0.140 0.433 < 0.149 0.1768.85 21.3 3.96 2.86 8.44 5.801.69 2.82 1.65 1.86 0.57 0.161

< 0.175 0.230 0.498 1.12 < 0.149 < 0.1210.79 9.63 4.85 10.5 0.473 1.876.20 9.70 4.40 5.40 5.09 0.506.03 8.13 10.9 3.87 1.86 0.772.06 16.1 5.42 9.48 8.71 1.412.74 6.53 1.64 2.48 2.58 0.167

< 0.175 < 0.127 1.17 3.52 < 0.149 < 0.121< 0.175 0.245 < 0.140 0.634 0 < 0.121< 0.175 0.272 8.07 < 0.126 < 0.149 < 0.1210.187 0.534 < 0.140 < 0.126 0 0.1860.359 1.07 1.01 1.58 0.54 0.1380.175 0.168 < 0.140 < 0.126 < 0.149 < 0.12144.0 104 627 2,725 31.9 16.7

< 0.175 < 0.127 38.7 < 0.126 < 0.149 < 0.121< 0.175 < 0.127 3.95 0.452 < 0.149 < 0.1210.282 0.463 8.19 < 0.126 0.237 0.309< 1.75 < 1.27 < 1.40 < 1.26 < 1.49 < 1.210.243 0.208 < 0.140 < 0.126 < 0.149 < 0.12116.8 46.6 27.7 32.2 16.8 4.840.1 87.2 34.7 33.2 34.9 16.5

3.36 10.4 8.85 29.3 1.98 2.412.77 2.92 3.40 10.6 < 1.79 < 1.463.94 7.33 4.83 15.5 < 1.79 1.472.39 < 1.53 3.26 11.0 < 1.79 < 1.466.71 10.3 8.23 26.0 2.15 2.1910.8 < 1.53 6.08 15.8 < 1.79 < 1.468.75 3.52 10.2 32.7 < 1.79 < 1.4635.0 2.59 21.1 69.2 < 1.79 < 1.4683.5 2.73 22.9 59.5 < 1.79 < 1.46

< 2.10 1.91 < 1.68 3.49 < 1.79 < 1.46< 2.10 7.63 1.91 2.28 1.88 < 1.46< 2.10 2.79 < 1.68 3.57 < 1.79 < 1.463.23 3.18 3.77 11.5 < 1.79 < 1.4623.4 6.59 32.7 84.2 < 1.79 2.1127.4 2.97 86.0 210 < 1.79 2.1140.8 14.5 120 321 6.99 2.7310.8 28.0 28.6 69.7 16.3 4.176.36 4.69 20.7 48.3 3.12 < 1.465.89 23.2 4.58 8.52 7.35 < 1.46

OU3 1001

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

C1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dw

Sum LPAHs (with 0.5 dl) ng/g dwSum HPAHs (with 0.5 dl) ng/g dwTotal PAH (with 0.5 dl) ng/g dw

2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw

2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dwSum TEQ* (mammals) (detects only) ng/g dw

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20.5 16.6 77.5 189 9.82 2.2735.1 19.1 112 255 6.76 2.8070.6 22.7 101 224 3.67 2.2988.3 40.6 86.7 94.5 < 1.79 2.5126.5 126 36.8 50.2 63.3 7.9934.1 126 45.4 59.6 64.6 8.4469.4 54.0 73.0 73.1 23.3 4.8727.8 52.0 35.4 38.8 32.4 4.4940.0 27.0 55.7 40.8 17.0 4.66130 43.2 190 73.4 10.5 13.673.7 21.5 73.3 38.9 7.06 6.5012.4 6.78 16.6 10.7 < 1.79 2.3411.5 27.1 15.6 24.5 32.6 2.7025.6 54.8 28.7 30.3 43.0 6.623.86 14.6 5.29 9.10 11.7 1.4916.6 32.3 16.2 32.0 38.0 5.3127.8 33.1 34.1 29.7 21.7 5.33154 56.9 134 98.3 13.7 16.46.45 6.71 5.58 6.69 4.76 < 1.469.01 23.8 8.04 16.9 20.5 4.4518.2 25.3 24.7 28.9 19.6 6.352.92 1.60 2.22 6.73 < 1.79 < 1.4612.3 2.86 14.5 32.1 < 1.79 < 1.4627.0 8.43 32.8 69.1 < 1.79 < 1.4636.3 12.5 40.7 62.9 < 1.79 < 1.46

492 236 766 1,795 71 37764 757 889 833 428 106

1,257 993 1,655 2,627 499 143

<0.0005 <0.0005 0.0016 0.0021 < 0.0004 < 0.0004< 0.0024 < 0.0025 < 0.0022 < 0.0019 < 0.0020 < 0.0019< 0.0024 < 0.0025 < 0.0022 0.0027 < 0.0020 < 0.0019< 0.0024 0.0027 0.0053 0.0101 < 0.0020 < 0.0019< 0.0024 < 0.0025 < 0.0022 0.0118 0.0020 < 0.0019< 0.0024 < 0.0025 0.0069 0.0067 0.0025 < 0.00190.0626 0.0603 0.1334 0.1734 0.0744 0.00940.4510 0.7281 1.4355 1.3156 0.9225 0.0578

<0.0005 0.0019 0.0062 0.0137 0.0006 < 0.0004< 0.0024 < 0.0025 0.0165 0.0052 < 0.0020 < 0.0019< 0.0024 < 0.00251 0.0048 0.0056 < 0.0020 < 0.00190.0026 < 0.0025 0.0142 0.0093 0.0055 < 0.0019

< 0.0024 < 0.0025 0.0039 0.0049 < 0.0020 < 0.0019< 0.0024 < 0.0025 < 0.0022 < 0.0019 < 0.0020 < 0.0019< 0.0024 0.0136 0.0367 0.0450 0.0247 < 0.0019< 0.0024 < 0.0025 0.0096 0.0108 0.0021 < 0.00190.0138 0.0207 0.0927 0.0329 0.0449 < 0.0038

0.000931 0.001273 0.010422 0.013442 0.002162 0.000100

OU3 1002

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

UnitsMoisture %Aldrin ng/g dwalpha BHC ng/g dwbeta BHC ng/g dwdelta BHC ng/g dwgamma BHC ng/g dwalpha chlordane ng/g dwcis-nonachlor ng/g dwgamma chlordane ng/g dwoxychlordane ng/g dwtrans-nonachlor ng/g dwo,p'-DDD ng/g dwo,p'-DDE ng/g dwo,p'-DDT ng/g dwp,p'-DDD ng/g dwp,p'-DDE ng/g dwp,p'-DDT ng/g dwdieldrin ng/g dwendosulfan II ng/g dwendrin ng/g dwHCB ng/g dwHeptachlor ng/g dwheptachlor epoxide ng/g dwmirex ng/g dwPCB-TOTAL ng/g dwpentachloro-anisole ng/g dw1,2,3,4-Tetrachlorobenzene ng/g dw1,2,4,5-Tetrachlorobenzene ng/g dwtoxaphene ng/g dwchlorpyrifos ng/g dwtotal DDTs (with 0.5 dl) ng/g dwtotal Chlordanes (with 0.5 dl) ng/g dw

naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dwC1-naphthalenes ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dw

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17.2 10.90.224 < 0.138

< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138

18.8 12.59.06 8.5121.4 14.5

< 0.172 0.40919.1 16.54.57 0.4930.802 < 0.1381.89 1.6511.9 0.95318.1 2.7511.3 0.7711.27 < 0.138

< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138

38.5 21.2< 0.172 < 0.138< 0.172 < 0.138< 0.172 < 0.138< 1.72 < 1.38< 0.172 < 0.138

48.6 6.768.4 52.4

2.34 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 1.94< 2.06 < 1.65< 2.06 2.487.08 4.01

< 2.06 < 1.653.44 < 1.65

OU3 1003

F and G St Marsh Fill AreaComposite Samples ‐ Organics

Sample #

C1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dw

Sum LPAHs (with 0.5 dl) ng/g dwSum HPAHs (with 0.5 dl) ng/g dwTotal PAH (with 0.5 dl) ng/g dw

2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw

2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dwSum TEQ* (mammals) (detects only) ng/g dw

F&G

20-D

subs

urfa

ce

F&G

20-S

surfa

ce

4.43 2.364.12 2.202.56 < 1.65

< 2.06 2.0522.6 12.528.2 13.89.25 4.7514.3 7.678.50 4.777.90 4.392.71 < 1.65

< 2.06 < 1.6510.0 4.5721.8 13.26.35 3.0519.7 9.6614.4 8.556.28 2.63

< 2.06 < 1.6511.7 8.4412.1 7.77

< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65< 2.06 < 1.65

39 30201 112239 141

<0.0005 < 0.0004< 0.0025 < 0.0019< 0.0025 < 0.0019< 0.0025 < 0.0019< 0.0025 < 0.0019< 0.0025 0.00300.0330 0.04650.3022 0.4208

0.0034 0.00180.0033 0.0025

< 0.0025 < 0.0019< 0.0025 < 0.0019< 0.0025 < 0.0019< 0.0025 < 0.00190.0069 0.0104

< 0.0025 < 0.00190.0058 0.0101

0.000931 0.001219

OU3 1004

1

Pre-Cleanup Characterization of Contaminants in Fill on the F&G Street Marsh, Refuge Cleanup study 1C73.

ATTACHMENT B

Analytical Results from Phase II (Individual Samples)

OU3 1005

F and G St. marsh Fill areaInorganics

Sample Number

Uni

ts

F&G

03-D

F&G

03-S

F&G

04-D

F&G

04se

-S

F&G

05sw

-D

F&G

05sw

-S

F&G

07ne

-D

F&G

07ne

-S

F&G

07se

-S

F&G

07sw

-D

F&G

07sw

-S

F&G

08ne

-D

F&G

08ne

-S

Sample Depth inches 12-31 0-12 12-44 0-12 12-20 0-12 12-48 0-12 0-12 12-30 0-12 12-43 0-12Moisture % 15.30 3.30 32.00 6.29 6.52 6.28 17.12 3.46 5.90 12.75 5.11 16.28 1.99

Al ug/g dry 21,000 16000 32,800 14,159 7,599 13,681 18,244 8,685 5,978 10,586 9,045 11,224 3,765As ug/g dry 3.60 3.7 8.10 0.829 1.81 1.64 2.47 <0.512 1.25 <0.514 1.84 <0.534 3.58B ug/g dry 20.0 20 50.0 58.7 29.6 38.5 64.9 26.2 31.7 30.1 39.5 36.1 19.0Ba ug/g dry 107 88.7 88.1 95.1 67.9 77.6 97.9 51.0 67.2 86.2 96.9 72.7 31.7Be ug/g dry 0.400 0.4 0.720 <0.208 <0.021 <0.020 <0.021 <0.021 <0.020 <0.021 <0.021 <0.021 <0.021Cd ug/g dry 1.10 0.3 2.00 0.849 0.483 0.319 0.852 0.207 0.257 0.173 0.367 0.232 0.244

Cr total ug/g dry 23.0 33 40.0 23.6 13.1 25.8 36.8 19.1 14.4 10.3 27.3 10.8 7.58Cr(+6) ug/g dry na na na <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0

Cr(+3) estimated ug/g dry na na na 22.6 12.1 24.8 35.8 18.1 13.4 9.3 26.3 9.8 6.6Cu ug/g dry 27.0 21 19.0 15.9 21.5 10.8 15.4 na na 7.31 na 9.54 naFe ug/g dry 21,400 16200 29,500 19,983 11,255 13,656 20,561 9,137 10,727 9,141 12,190 10,830 6,562Hg ug/g dry <0.10 0.05 <0.10 0.216 <0.103 0.195 <0.104 <0.103 0.864 <0.103 <0.104 0.107 <0.104Mg ug/g dry 4,690 3790 8,450 5,086 2,437 3,784 5,761 2,300 3,035 4,458 3,070 4,026 1,686Mn ug/g dry 514 329 567 341 191 267 474 112 129 222 116 167 136Mo ug/g dry <5.0 2.5 <5.0 <1.04 <1.03 <1.00 <1.04 <1.02 <1.02 <1.03 <1.04 <1.07 <1.04Ni ug/g dry 15.0 10 30.0 10.5 8.05 12.4 12.8 9.97 6.3 6.84 12.1 6.13 7.38Pb ug/g dry 170 64 21.0 107 137 41.1 47.3 17.3 7.5 8.40 11.2 20.3 86.7Se ug/g dry <0.50 0.25 <1.0 <0.520 <0.513 <0.502 <0.522 <0.512 <0.511 <0.514 <0.522 <0.534 <0.519Sr ug/g dry 24.0 21 37.0 17.8 18.3 26.7 30.3 20.3 16.6 22.5 21.1 17.9 11.9V ug/g dry 56.0 40 66.0 50.4 22.4 34.4 42.2 20.6 27.5 20.9 28.4 23.2 10.9Zn ug/g dry 150 59 67.0 61.1 58.7 39.2 68.7 23.4 27.1 29.3 35.8 28.4 62.5

OU3 1006

F and G St. marsh Fill areaInorganics

Sample Number

Sample Depth Moisture

AlAsBBaBeCd

Cr totalCr(+6)

Cr(+3) estimatedCuFeHgMgMnMoNiPbSeSrVZn

F&G

08se

-D

F&G

08se

-S

F&G

09ne

-D

F&G

09ne

-S

F&G

09nw

-D

F&G

09nw

-S

F&G

09se

-D

F&G

09se

-S

F&G

09sw

-D

F&G

09sw

-S

F&G

10ne

-D

F&G

10ne

-S

F&G

10se

-S

F&G

11ne

-S

12-48 0-12 12-40 0-12 12-31 0-12 12-32 0-12 12-39 0-12 12-42 0-12 0-12 0-1213.06 9.28 14.98 5.06 26.04 4.36 16.24 6.15 16.74 2.85 45.47 10.42 2.98 6.57

15,860 8,797 4,790 18,480 19,491 8,771 13,353 8,560 21,151 7,666 35,539 16,148 9,914 13,0371.00 1.74 <0.512 <0.524 2.27 0.854 2.60 2.30 1.19 1.94 6.85 0.953 1.60 1.7853.4 36.8 26.6 56.6 86.7 36.8 53.0 30.2 71.2 30.1 139.8 51.0 40.2 43.889.4 66.9 57.1 96.7 94.7 105 65.8 88.6 87.8 66.1 84.1 103 98.2 53.5

<0.020 <0.021 <0.021 <0.021 <0.021 <0.021 <0.021 <0.021 <0.020 <0.021 <0.020 <0.020 <0.020 <0.0200.473 0.508 0.264 0.504 0.879 0.392 0.370 0.637 0.498 0.567 2.30 0.498 0.433 0.33516.5 18.3 8.2 21.5 22.6 11.9 15.7 15.5 19.2 11.3 44.5 20.3 15.6 18.3<2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.015.5 17.3 7.2 20.5 21.6 10.9 14.7 14.5 18.2 10.3 43.5 19.3 14.6 17.313.6 17.9 6.41 8.90 17.2 21.5 11.6 9.78 17.0 17.9 17.0 26.5 13.4 14.9

15,964 13,406 9,077 17,702 18,998 9,616 13,907 10,552 18,584 9,878 32,526 18,180 13,570 13,757<0.102 0.143 <0.103 <0.105 <0.107 <0.103 <0.104 <0.103 <0.101 <0.104 <0.101 0.178 <0.101 <0.1014,492 4,498 3,294 3,724 14,388 4,762 8,100 3,215 5,520 2,790 10,597 5,481 3,990 4,466800 323 251 797 786 140 397 255 787 177 365 443 258 154

<1.02 <1.05 <1.02 <1.05 <1.07 <1.03 <1.04 <1.03 <1.01 <1.04 <1.01 <1.01 <1.01 <1.0113.2 14.8 4.73 12.3 12.3 8.18 8.19 8.23 11.5 10.3 18.5 14.2 5.69 7.6666.4 200 6.96 10.9 52.4 206 35.3 124 47.8 232 11.5 24.3 24.6 24.0

<0.511 <0.523 <0.512 <0.524 <0.533 <0.514 <0.519 <0.517 <0.504 <0.522 <0.506 <0.503 <0.503 <0.50521.7 18.2 18.5 14.4 219 25.7 65.9 56.1 55.0 33.4 37.5 32.6 24.5 67.638.3 31.3 24.0 39.3 47.1 18.2 42.6 22.5 36.6 22.4 69.8 41.8 40.6 31.443.2 94.8 20.7 38.3 46.8 103 42.0 46.8 50.2 171 68.4 74.0 45.0 36.6

OU3 1007

F and G St. marsh Fill areaInorganics

Sample Number

Sample Depth Moisture

AlAsBBaBeCd

Cr totalCr(+6)

Cr(+3) estimatedCuFeHgMgMnMoNiPbSeSrVZn

F&G

11nw

-S

F&G

11se

-D

F&G

11se

-S

F&G

11sw

-D

F&G

11sw

-S

F&G

12ne

-D

F&G

12ne

-S

F&G

12nw

-D

F&G

12nw

-S

F&G

12se

-D

F&G

12se

-S

F&G

12sw

-D

F&G

12sw

-S

F&G

13ne

-D

0-12 12-30 0-12 12-48 0-12 12-40 0-12 12-46 0-12 12-46 0-12 12-46 0-12 12-464.53 9.97 6.90 23.76 2.93 20.37 2.88 41.73 11.97 17.23 9.87 38.13 6.02 15.848,265 6,254 13,948 23,899 10,433 11,735 5,368 22,339 5,890 4,495 16,190 21,106 8,117 17,4581.69 4.35 <0.526 1.45 3.88 2.64 <0.506 <0.530 1.78 <0.506 <0.529 <0.516 1.51 <0.53265.2 36.4 19.8 82.5 39.1 64.4 15.1 75.7 25.2 26.0 50.5 90.3 32.9 39.9198 99.8 90.6 95.0 84.6 70.6 62.6 77.4 85.2 34.8 125 84.1 54.6 54.3

<0.021 <0.021 0.124 <0.021 <0.021 0.022 <0.020 <0.021 <0.020 <0.020 <0.021 <0.021 <0.020 <0.0210.663 0.683 0.233 1.33 0.886 1.95 0.131 0.506 0.136 0.365 0.539 0.760 0.520 0.14810.9 9.59 7.66 24.0 18.3 20.9 10.2 12.8 10.0 9.24 19.5 18.4 31.5 10.8<2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.09.9 8.6 6.7 23.0 17.3 19.9 9.2 11.8 9.0 8.2 18.5 17.4 30.5 9.8

85.7 19.9 18.1 34.7 31.3 55.1 13.9 11.0 12.0 12.5 61.6 14.9 15.1 12.313,473 9,693 5,026 23,773 13,687 16,247 4,576 12,683 8,725 6,400 15,476 18,195 11,416 11,8460.165 0.193 <0.105 0.162 <0.106 <0.108 <0.101 <0.106 <0.101 <0.101 <0.106 <0.103 <0.102 <0.1063,958 3,540 5,341 7,844 4,090 4,659 2,778 9,410 3,107 2,846 4,639 10,536 3,554 4,721231 214 116 689 212 359 169 393 238 114 158 433 140 152

<1.04 <1.07 <1.05 <1.07 <1.06 <1.08 <1.01 <1.06 <1.01 <1.01 <1.06 <1.03 <1.02 <1.067.70 10.4 16.4 17.3 18.0 20.8 13.7 10.8 11.1 9.41 12.4 16.4 24.8 7.43348 246 140 205 245 210 141 23.8 175 318 257 462 76.5 14.5

<0.520 <0.535 <0.526 <0.535 <0.530 <0.539 <0.506 <0.530 <0.506 <0.506 <0.529 <0.516 <0.509 <0.53224.5 30.1 28.2 47.3 29.2 52.8 13.7 34.2 19.3 12.6 25.2 43.3 89.5 16.920.9 19.6 0.931 37.3 27.0 35.3 2.72 3.38 21.2 12.4 29.2 17.4 24.8 20.5105 118 75.7 101 136 107 67.54 52.2 46.3 52.7 97.2 74.7 39.4 37.3

OU3 1008

F and G St. marsh Fill areaInorganics

Sample Number

Sample Depth Moisture

AlAsBBaBeCd

Cr totalCr(+6)

Cr(+3) estimatedCuFeHgMgMnMoNiPbSeSrVZn

F&G

13ne

-S

F&G

13nw

-D

F&G

13nw

-S

F&G

13sw

-D

F&G

13sw

-S

F&G

14-D

F&G

14-S

F&G

15ne

-D

F&G

15ne

-S

F&G

15nw

-S

F&G

15se

-D

F&G

15se

-S

F&G

16C

-D

F&G

16C

-S

0-12 12-46 0-12 12-46 0-12 12-22 0-12 12-36 0-12 0-12 12-48 0-12 12-26 0-124.05 15.62 8.60 10.44 1.80 7.30 1.90 19.79 3.65 1.68 38.44 11.53 2.56 2.22

11,661 15,137 10,312 14,275 8,993 13,500 12,300 19,903 10,057 6,998 19,034 9,525 11,091 7,6731.46 1.44 1.61 1.35 1.58 3.40 3.20 7.01 3.10 2.74 <0.526 1.31 2.97 1.7140.8 54.4 44.7 64.7 34.8 10.0 <10.0 79.7 36.3 23.3 53.6 35.8 38.5 37.288.4 84.5 102 59.4 62.9 121 86.3 62.1 82.0 66.9 83.3 85.5 64.3 77.8

<0.021 <0.021 <0.020 <0.021 <0.021 0.300 0.300 <0.021 <0.020 0.022 0.069 <0.021 <0.021 <0.0210.504 0.383 0.567 0.408 0.381 0.300 0.500 1.01 0.521 0.478 0.161 0.633 0.486 2.2022.3 15.1 15.1 14.3 9.16 17.0 24.0 37.1 15.2 15.3 6.69 20.1 25.1 1,026<2.0 <2.0 <2.0 <2.0 <2.0 na na <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 1,10321.3 14.1 14.1 13.3 8.2 16.0 23.0 36.1 14.2 14.3 5.7 19.1 24.1 0.017.4 12.2 8.28 8.99 10.2 14.0 11.0 19.6 18.1 12.6 15.7 16.5 12.1 102

14,024 16,232 13,600 15,951 13,486 15,400 14,100 23,044 11,989 8,585 6,958 11,793 15,319 15,043<0.104 <0.103 <0.101 <0.106 <0.104 <0.100 <0.100 <0.106 <0.101 <0.107 <0.105 <0.103 <0.106 0.2183,843 4,244 4,672 7,664 3,565 4,040 3,270 6,413 3,862 2,667 9,855 4,124 2,658 2,155233 541 764 411 365 230 130 460 214 139 85.7 253 191 252

<1.04 <1.03 <1.01 <1.06 <1.04 <5.00 <5.00 <1.06 <1.01 <1.07 <1.05 <1.03 <1.06 3.5210.0 12.2 9.73 7.85 10.7 10 10 21.5 9.02 7.98 8.62 36.0 9.79 134126 51.3 36.8 11.9 19.7 22.0 32.0 71.0 279 101 375 24.7 87.2 480

<0.519 <0.514 <0.507 <0.530 <0.519 <0.500 <0.500 <0.531 <0.503 <0.537 <0.526 <0.514 <0.531 <0.51322.2 20.5 45.4 67.4 21.8 19.0 22.0 30.3 30.6 28.3 37.6 21.1 39.5 26530.1 37.1 26.1 41.5 28.3 39.0 32.0 46.9 25.5 15.0 3.65 25.6 43.9 29.5104 40.6 39.7 39.8 42.8 57.0 205 65.3 108 192 63.7 220 67.0 755

OU3 1009

F and G St. marsh Fill areaInorganics

Sample Number

Sample Depth Moisture

AlAsBBaBeCd

Cr totalCr(+6)

Cr(+3) estimatedCuFeHgMgMnMoNiPbSeSrVZn

F&G

16nw

-D

F&G

16nw

-S

F&G

16sw

-D

F&G

16sw

-S

F&G

17-D

F&G

17-S

F&G

20-D

F&G

20-S

12-27 0-12 12-27 0-12 12-48 0-12 12-29 0-129.18 1.30 11.76 5.78 14.60 3.70 24.70 11.00

10,610 8,478 22,901 12,832 21,300 13,300 5,510 24,3000.752 1.41 3.48 1.26 2.70 2.40 3.00 2.3033.8 25.0 266.6 51.1 35.0 32.0 10.0 30.087.5 53.3 82.8 145 93.0 78.6 23.0 1720.022 <0.021 <0.021 0.022 0.400 0.300 <0.020 0.4000.238 0.453 5.93 0.711 0.400 0.200 <0.200 0.76014.9 43.5 2,437 5,404 18.0 21.0 6.2 26.0<2.0 35.6 7.62 30.3 na na na na13.9 7.9 2,429 5,374 na na na na14.8 25.6 1,396 381 21 15 4.30 23

10,974 10,175 90,585 18,671 17,300 17,700 5,560 26,200<0.108 <0.106 1.43 0.531 <0.100 <0.100 <0.100 <0.1003,720 3,094 2,772 3,971 6,210 4,670 1,630 8,840162 218 694 214 401 265 150 436

<1.08 <1.06 116.19 5.70 <5.00 <5.00 <5.00 <5.0022.9 143 612 321 10 10 <5.00 10127 78.3 2,144 5,138 190 38.0 10.0 33.0

<0.539 <0.532 1.832 3.388 <0.500 <0.500 <0.500 <0.50024.8 24.8 406 970 57.0 27.0 6.40 43.024.0 19.2 190.5 26.4 53 46 12 7075.7 56.1 16,329 2,038 84 49 19 72

OU3 1010

F and G St. Marsh fill areaOrganochlorines and Chlorpyrifos

Sample Number

F&G

03-D

F&G

04-D

F&G

04se

-S

F&G

05sw

-D

F&G

05sw

-S

F&G

07ne

-D

F&G

07ne

-S

F&G

07se

-S

F&G

07sw

-D

F&G

07sw

-S

F&G

08ne

-D

F&G

08ne

-S

F&G

08se

-D

Sample Depth inches 12-31 12-44 0-12 12-20 0-12 12-48 0-12 0-12 12-30 0-12 12-43 0-12 12-48Moisture % 16 30 5 na na na 11 4 2 6 na na na 15 2 1 81 naMoisture % 16 30.5 na na na 11.4 2.6 na na na 15.2 1.81 na

Aldrin ng/g dry 0.468 <0.174 na na na <0.105 <0.102 na na na <0.119 0.187 naalpha BHC ng/g dry <0.145 <0.174 na na na 0.144 <0.102 na na na 0.136 <0.063 nabeta BHC ng/g dry 0.359 <0.174 na na na <0.105 <0.102 na na na <0.119 <0.063 nadelta BHC ng/g dry <0.145 <0.174 na na na <0.105 <0.102 na na na 0.139 0.187 na

gamma BHC ng/g dry 0.337 <0.174 na na na <0.105 <0.102 na na na 0.318 0.088 naalpha chlordane* ng/g dry 52 7 0 361 na na na 11 2 1 02 na na na 13 8 17 2 naalpha chlordane ng/g dry 52.7 0.361 na na na 11.2 1.02 na na na 13.8 17.2 na

cis-nonachlor* ng/g dry 8.84 <0.174 na na na 3.14 0.310 na na na 4.10 6.45 nagamma chlordane* ng/g dry 75.1 0.646 na na na 13.2 1.19 na na na 16.6 22.9 na

oxychlordane* ng/g dry 4.48 <0.174 na na na 1.05 <0.102 na na na 1.50 0.362 natrans-nonachlor* ng/g dry 38.0 0.430 na na na 7.60 0.990 na na na 9.18 13.6 na

chlorpyrifos ng/g dry 1.67 <0.174 na na na <0.105 <0.102 na na na <0.119 0.214 nao,p'-DDD** ng/g dry 217 1.95 na na na 6.44 0.293 na na na 7.69 4.83 nao,p -DDD ng/g dry 217 1.95 na na na 6.44 0.293 na na na 7.69 4.83 nao,p'-DDE** ng/g dry 17.6 0.464 na na na 1.80 <0.102 na na na 2.21 0.970 nao,p'-DDT** ng/g dry 8.51 0.794 na na na 0.345 1.03 na na na 0.775 5.78 nap,p'-DDD** ng/g dry 564 4.76 na na na 30.1 1.08 na na na 35.0 12.9 nap,p'-DDE** ng/g dry 103 23.6 na na na 44.7 4.45 na na na 52.6 21.2 nap,p'-DDT** ng/g dry 24.9 2.05 na na na 1.81 11.7 na na na 2.63 44.2 na

dieldrin ng/g dry 10.4 <0.174 na na na 12.1 0.255 na na na 16.9 4.26 nadieldrin ng/g dry 10.4 <0.174 na na na 12.1 0.255 na na na 16.9 4.26 naendosulfan II ng/g dry <0.145 <0.174 na na na <0.105 <0.102 na na na <0.119 2.56 na

endrin ng/g dry 1.38 <0.174 na na na 0.217 0.237 na na na 0.548 1.48 naHCB ng/g dry <0.145 <0.174 na na na 0.168 0.121 na na na 0.130 0.110 na

Heptachlor ng/g dry 3.29 <0.174 na na na <0.105 <0.102 na na na <0.119 0.369 naheptachlor epoxide ng/g dry 1.00 <0.174 na na na <0.105 <0.102 na na na <0.119 0.185 na

mirex ng/g dry <0.145 <0.174 na na na 0.135 <0.102 na na na <0.119 <0.063 nag g yPCB-1242 ng/g dry nr nr na na na <2.10 <2.04 na na na <2.39 <1.26 naPCB-1248 ng/g dry nr nr na na na <2.10 <2.04 na na na <2.39 <1.26 naPCB-1254 ng/g dry nr nr na na na <2.10 <2.04 na na na <2.39 <1.26 naPCB-1260 ng/g dry nr nr na na na <2.10 <2.04 na na na <2.39 <1.26 naPCB-1268 ng/g dry nr nr na na na 55.7 8.63 na na na 75.1 159.831 na

PCB-TOTAL ng/g dry 353 20.7 na na na 55.8 8.62 na na na 75.1 159.792 nag g ypentachloro-anisole ng/g dry <0.145 <0.174 na na na 0.270 0.111 na na na 0.249 31.1 na

1,2,3,4-Tetrachlorobenzene ng/g dry 0.182 <0.174 na na na <0.105 <0.102 na na na 0.516 <0.063 na1,2,4,5-Tetrachlorobenzene ng/g dry <0.145 0.290 na na na <0.105 <0.102 na na na <0.119 <0.882 na

toxaphene ng/g dry <0.145 <0.174 na na na <2.10 <2.04 na na na <2.39 <1.26 naTotal Chlordanes with 0.5 DL* ng/g dry 181 1.70 na na na 36.2 3.61 na na na 45.3 60.7 na

Total DDTs with 0.5 DL** ng/g dry 935 33.6 na na na 85.1 18.6 na na na 101 89.9 na

OU3 1011

F and G St. Marsh fill areaOrganochlorines and Chlorpyrifos

Sample Number

Sample Depth inchesMoisture %

F&G

08se

-S

F&G

09ne

-D

F&G

09ne

-S

F&G

09nw

-D

F&G

09nw

-S

F&G

09se

-D

F&G

09se

-S

F&G

09sw

-D

F&G

09sw

-S

F&G

10ne

-D

F&G

10ne

-S

F&G

10se

-S

F&G

11ne

-S

F&G

11nw

-S

F&G

11se

-D

0-12 12-40 0-12 12-31 0-12 12-32 0-12 12-39 0-12 12-42 0-12 0-12 0-12 0-12 12-30na na na na na na na na na na na na na na 10 6Moisture %

Aldrin ng/g dryalpha BHC ng/g drybeta BHC ng/g drydelta BHC ng/g dry

gamma BHC ng/g dryalpha chlordane* ng/g dry

na na na na na na na na na na na na na na 10.6na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na 0.525na na na na na na na na na na na na na na 0.651na na na na na na na na na na na na na na 0.847na na na na na na na na na na na na na na 1.16na na na na na na na na na na na na na na 96 6alpha chlordane ng/g dry

cis-nonachlor* ng/g drygamma chlordane* ng/g dry

oxychlordane* ng/g drytrans-nonachlor* ng/g dry

chlorpyrifos ng/g dryo,p'-DDD** ng/g dry

na na na na na na na na na na na na na na 96.6na na na na na na na na na na na na na na 35.6na na na na na na na na na na na na na na 133na na na na na na na na na na na na na na 10.1na na na na na na na na na na na na na na 68.8na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na 21.3o,p -DDD ng/g dry

o,p'-DDE** ng/g dryo,p'-DDT** ng/g dryp,p'-DDD** ng/g dryp,p'-DDE** ng/g dryp,p'-DDT** ng/g dry

dieldrin ng/g dry

na na na na na na na na na na na na na na 21.3na na na na na na na na na na na na na na 4.21na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na 85.0na na na na na na na na na na na na na na 64.4na na na na na na na na na na na na na na 2.93na na na na na na na na na na na na na na 11.0dieldrin ng/g dry

endosulfan II ng/g dryendrin ng/g dryHCB ng/g dry

Heptachlor ng/g dryheptachlor epoxide ng/g dry

mirex ng/g dry

na na na na na na na na na na na na na na 11.0na na na na na na na na na na na na na na 0.798na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na 0.848na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na <0.448g g y

PCB-1242 ng/g dryPCB-1248 ng/g dryPCB-1254 ng/g dryPCB-1260 ng/g dryPCB-1268 ng/g dry

PCB-TOTAL ng/g dry

na na na na na na na na na na na na na na <8.95na na na na na na na na na na na na na na <8.95na na na na na na na na na na na na na na <8.95na na na na na na na na na na na na na na <8.95na na na na na na na na na na na na na na 510na na na na na na na na na na na na na na 510g g y

pentachloro-anisole ng/g dry1,2,3,4-Tetrachlorobenzene ng/g dry1,2,4,5-Tetrachlorobenzene ng/g dry

toxaphene ng/g dryTotal Chlordanes with 0.5 DL* ng/g dry

Total DDTs with 0.5 DL** ng/g dry

na na na na na na na na na na na na na na 1.06na na na na na na na na na na na na na na 6.82na na na na na na na na na na na na na na <0.448na na na na na na na na na na na na na na <8.95na na na na na na na na na na na na na na 344na na na na na na na na na na na na na na 178

OU3 1012

F and G St. Marsh fill areaOrganochlorines and Chlorpyrifos

Sample Number

Sample Depth inchesMoisture %

F&G

11se

-S

F&G

11sw

-D

F&G

11sw

-S

F&G

12ne

-D

F&G

12ne

-S

F&G

12nw

-D

F&G

12nw

-S

F&G

12se

-D

F&G

12se

-S

F&G

12sw

-D

F&G

12sw

-S

F&G

13ne

-D

F&G

13ne

-S

F&G

13nw

-D

0-12 12-48 0-12 12-40 0-12 12-46 0-12 12-46 0-12 12-46 0-12 12-46 0-12 12-466 29 na na na na na na 15 5 4 71 36 7 5 92 na na naMoisture %

Aldrin ng/g dryalpha BHC ng/g drybeta BHC ng/g drydelta BHC ng/g dry

gamma BHC ng/g dryalpha chlordane* ng/g dry

6.29 na na na na na na 15.5 4.71 36.7 5.92 na na na<0.260 na na na na na na 0.111 0.523 <0.118 <1.09 na na na<0.260 na na na na na na <0.034 <0.096 <0.118 <1.09 na na na<0.260 na na na na na na <0.034 0.113 <0.118 <1.09 na na na<0.260 na na na na na na <0.034 0.172 <0.118 <1.09 na na na0.671 na na na na na na <0.034 <0.096 <0.118 <1.09 na na na93 1 na na na na na na 14 7 15 5 13 0 3 97 na na naalpha chlordane ng/g dry

cis-nonachlor* ng/g drygamma chlordane* ng/g dry

oxychlordane* ng/g drytrans-nonachlor* ng/g dry

chlorpyrifos ng/g dryo,p'-DDD** ng/g dry

93.1 na na na na na na 14.7 15.5 13.0 3.97 na na na33.2 na na na na na na 5.05 5.94 4.71 1.34 na na na132 na na na na na na 15.9 16.6 15.2 4.28 na na na9.94 na na na na na na 0.241 0.099 0.573 <1.09 na na na60.0 na na na na na na 11.4 12.9 10.6 3.39 na na na0.708 na na na na na na <0.034 0.197 <0.118 <1.09 na na na18.3 na na na na na na 2.98 4.37 2.18 <1.09 na na nao,p -DDD ng/g dry

o,p'-DDE** ng/g dryo,p'-DDT** ng/g dryp,p'-DDD** ng/g dryp,p'-DDE** ng/g dryp,p'-DDT** ng/g dry

dieldrin ng/g dry

18.3 na na na na na na 2.98 4.37 2.18 <1.09 na na na3.46 na na na na na na 0.161 0.925 0.344 <1.09 na na na0.263 na na na na na na 0.335 4.65 0.267 <1.09 na na na53.2 na na na na na na 9.36 13.8 7.88 1.49 na na na24.8 na na na na na na 4.25 21.4 6.06 2.03 na na na2.39 na na na na na na 2.21 24.2 0.864 4.27 na na na6.92 na na na na na na 3.81 8.18 2.43 <1.09 na na nadieldrin ng/g dry

endosulfan II ng/g dryendrin ng/g dryHCB ng/g dry

Heptachlor ng/g dryheptachlor epoxide ng/g dry

mirex ng/g dry

6.92 na na na na na na 3.81 8.18 2.43 <1.09 na na na8.80 na na na na na na 0.131 0.738 <0.118 <1.09 na na na4.40 na na na na na na 0.568 1.40 <0.118 <1.09 na na na

<0.260 na na na na na na 0.111 0.356 <0.118 <1.09 na na na<0.260 na na na na na na 0.101 0.565 <0.118 <1.09 na na na0.276 na na na na na na 0.216 <0.096 0.118 <1.09 na na na

<0.260 na na na na na na <0.034 <0.096 <0.118 <1.09 na na nag g yPCB-1242 ng/g dryPCB-1248 ng/g dryPCB-1254 ng/g dryPCB-1260 ng/g dryPCB-1268 ng/g dry

PCB-TOTAL ng/g dry

<5.21 na na na na na na <0.684 <1.94 <2.36 <21.7 na na na<5.21 na na na na na na <0.684 <0.096 <2.36 <21.7 na na na<5.21 na na na na na na <0.684 <0.096 <2.36 <21.7 na na na<5.21 na na na na na na <0.684 <0.096 <2.36 <21.7 na na na278 na na na na na na 63.0 130 56.8 54.4 na na na278 na na na na na na 63.0 130 56.7 54.4 na na nag g y

pentachloro-anisole ng/g dry1,2,3,4-Tetrachlorobenzene ng/g dry1,2,4,5-Tetrachlorobenzene ng/g dry

toxaphene ng/g dryTotal Chlordanes with 0.5 DL* ng/g dry

Total DDTs with 0.5 DL** ng/g dry

1.91 na na na na na na 0.102 0.236 <0.118 <1.09 na na na0.945 na na na na na na 0.213 <0.096 0.861 4.69 na na na3.08 na na na na na na 1.14 <0.096 <0.118 <1.09 na na na

<5.21 na na na na na na <0.684 <1.94 <2.36 <21.7 na na na329 na na na na na na 47.3 51.2 44.2 14.1 na na na102 na na na na na na 19.3 69.3 17.6 9.41 na na na

OU3 1013

F and G St. Marsh fill areaOrganochlorines and Chlorpyrifos

Sample Number

Sample Depth inchesMoisture %

F&G

13nw

-S

F&G

13sw

-D

F&G

13sw

-S

F&G

14-D

F&G

14-S

F&G

15ne

-D

F&G

15ne

-S

F&G

15nw

-S

F&G

15se

-D

F&G

15se

-S

F&G

16C

-D

F&G

16C

-S

F&G

16nw

-D

0-12 12-46 0-12 12-22 0-12 12-36 0-12 0-12 12-48 0-12 12-26 0-12 12-27na na na 8 46 1 5 8 24 7 67 na 34 0 9 93 1 39 2 24 17 3Moisture %

Aldrin ng/g dryalpha BHC ng/g drybeta BHC ng/g drydelta BHC ng/g dry

gamma BHC ng/g dryalpha chlordane* ng/g dry

na na na 8.46 1.5 8.24 7.67 na 34.0 9.93 1.39 2.24 17.3na na na <0.134 <0.126 0.876 <0.101 na 0.152 <0.154 <0.125 1.677 <0.165na na na <0.134 <0.126 <0.358 0.196 na 0.173 <0.154 <0.125 0.415 <0.165na na na <0.134 <0.126 0.395 <0.101 na 0.239 <0.154 <0.125 <0.166 <0.165na na na <0.134 <0.126 <0.358 0.125 na 0.145 0.158 0.348 <0.166 0.534na na na <0.134 <0.126 <0.358 0.276 na <0.094 <0.154 <0.125 0.182 <0.165na na na 2 32 <0 126 15 6 39 6 na 12 9 2 54 3 11 4 04 13 5alpha chlordane ng/g dry

cis-nonachlor* ng/g drygamma chlordane* ng/g dry

oxychlordane* ng/g drytrans-nonachlor* ng/g dry

chlorpyrifos ng/g dryo,p'-DDD** ng/g dry

na na na 2.32 <0.126 15.6 39.6 na 12.9 2.54 3.11 4.04 13.5na na na 1.08 0.262 5.33 13.3 na 4.13 0.537 2.18 35.1 4.46na na na 2.92 <0.126 18.9 46.8 na 13.3 2.66 3.88 6.71 16.8na na na <0.134 <0.126 0.361 0.284 na 0.224 <0.154 0.222 1.99 0.411na na na 1.94 <0.126 11.9 29.9 na 10.6 2.00 2.88 3.06 10.5na na na <0.134 <0.126 <0.358 <0.101 na <0.094 <0.154 <0.125 <0.166 <0.165na na na 0.437 <0.126 1.652 4.05 na 2.29 1.00 0.565 8.59 2.45o,p -DDD ng/g dry

o,p'-DDE** ng/g dryo,p'-DDT** ng/g dryp,p'-DDD** ng/g dryp,p'-DDE** ng/g dryp,p'-DDT** ng/g dry

dieldrin ng/g dry

na na na 0.437 <0.126 1.652 4.05 na 2.29 1.00 0.565 8.59 2.45na na na <0.134 <0.126 <0.358 0.423 na 0.114 0.160 <0.125 4.34 0.191na na na 1.38 0.550 <0.358 3.15 na <0.094 1.11 0.960 23.8 1.03na na na 1.41 0.195 8.01 15.2 na 5.63 3.25 2.98 16.9 8.25na na na 1.44 <0.126 7.80 12.1 na 6.32 5.04 4.21 10.6 10.1na na na 4.37 0.446 1.37 35.8 na 0.424 8.88 4.27 11.2 4.22na na na 1.03 <0.126 8.12 15.6 na 2.04 0.803 <0.125 4.46 3.93dieldrin ng/g dry

endosulfan II ng/g dryendrin ng/g dryHCB ng/g dry

Heptachlor ng/g dryheptachlor epoxide ng/g dry

mirex ng/g dry

na na na 1.03 <0.126 8.12 15.6 na 2.04 0.803 <0.125 4.46 3.93na na na <0.134 <0.126 1.77 0.422 na <0.094 <0.154 0.569 <0.166 0.199na na na <0.134 <0.126 1.15 1.39 na <0.094 <0.154 0.519 1.10 0.981na na na <0.134 <0.126 <0.358 0.235 na 0.199 0.265 2.46 36.5 0.327na na na <0.134 <0.126 <0.358 0.598 na <0.094 <0.154 0.279 0.227 0.521na na na <0.134 <0.126 0.644 1.06 na <0.094 <0.154 0.368 9.35 <0.165na na na <0.134 <0.126 <0.358 <0.101 na <0.094 <0.154 <0.125 <0.166 <0.165g g y

PCB-1242 ng/g dryPCB-1248 ng/g dryPCB-1254 ng/g dryPCB-1260 ng/g dryPCB-1268 ng/g dry

PCB-TOTAL ng/g dry

na na na nr nr <7.17 <2.02 na <1.88 <3.08 <2.50 <3.31 <3.29na na na nr nr <7.17 <2.02 na <1.88 <3.08 <2.50 <3.31 <3.29na na na nr nr <7.17 <2.02 na <1.88 <3.08 <2.50 <3.31 <3.29na na na nr nr <7.17 <2.02 na <1.88 <3.08 <2.50 <3.31 <3.29na na na nr nr 73.5 197 na 50.7 176 513 13,427 79.3na na na 63.6 59.5 73.5 197 na 50.8 176 513 13,427 79.3g g y

pentachloro-anisole ng/g dry1,2,3,4-Tetrachlorobenzene ng/g dry1,2,4,5-Tetrachlorobenzene ng/g dry

toxaphene ng/g dryTotal Chlordanes with 0.5 DL* ng/g dry

Total DDTs with 0.5 DL** ng/g dry

na na na <0.134 <0.126 <0.358 0.265 na 0.212 0.258 8.43 122 0.390na na na <0.134 0.063 <0.358 0.180 na 0.242 <0.154 0.644 1.71 0.682na na na 0.249 0.177 4.99 <0.101 na <0.094 <0.154 3.91 2.79 3.71na na na <1.34 <1.26 <7.17 <2.02 na <1.88 <3.08 <2.50 <3.31 <3.29na na na 8.39 0.58 52.2 130 na 41.2 7.89 12.3 51.0 45.7na na na 9.10 1.38 19.2 70.7 na 14.8 19.4 13.0 75.4 26.2

OU3 1014

F and G St. Marsh fill areaOrganochlorines and Chlorpyrifos

Sample Number

Sample Depth inchesMoisture %

F&G

16nw

-S

F&G

16sw

-D

F&G

16sw

-S

F&G

17-D

F&G

17-S

F&G

20-D

F&G

20-S

0-12 12-27 0-12 12-48 0-12 12-29 0-120 99 10 2 6 07 14 5 4 29 17 2 10 9Moisture %

Aldrin ng/g dryalpha BHC ng/g drybeta BHC ng/g drydelta BHC ng/g dry

gamma BHC ng/g dryalpha chlordane* ng/g dry

0.99 10.2 6.07 14.5 4.29 17.2 10.9<0.308 0.135 0.753 0.543 <0.121 0.224 <0.1380.511 <0.120 0.076 <0.150 <0.121 <0.172 <0.138

<0.308 <0.120 <0.040 <0.150 <0.121 <0.172 <0.138<0.308 <0.120 <0.040 <0.150 <0.121 <0.172 <0.138<0.308 <0.120 0.270 <0.150 <0.121 <0.172 <0.138

3 92 3 52 9 42 10 5 3 91 18 8 12 5alpha chlordane ng/g drycis-nonachlor* ng/g dry

gamma chlordane* ng/g dryoxychlordane* ng/g dry

trans-nonachlor* ng/g drychlorpyrifos ng/g dryo,p'-DDD** ng/g dry

3.92 3.52 9.42 10.5 3.91 18.8 12.510.8 7.40 7.37 3.87 2.40 9.06 8.514.06 3.87 12.9 12.000 4.18 21.4 14.52.58 0.496 0.496 <0.150 0.176 <0.172 0.4092.97 2.64 7.91 8.44 5.80 19.1 16.5

<0.308 <0.120 <0.040 <0.150 <0.121 <0.172 <0.1383.68 2.66 2.78 0.570 0.161 4.57 0.493o,p -DDD ng/g dry

o,p'-DDE** ng/g dryo,p'-DDT** ng/g dryp,p'-DDD** ng/g dryp,p'-DDE** ng/g dryp,p'-DDT** ng/g dry

dieldrin ng/g dry

3.68 2.66 2.78 0.570 0.161 4.57 0.4931.04 1.22 1.12 <0.150 <0.121 0.802 <0.1387.86 4.59 5.73 0.473 1.87 1.89 1.659.90 5.89 13.4 5.09 0.504 11.9 0.9537.33 31.1 6.17 1.86 0.766 18.1 2.756.37 3.91 14.8 8.71 1.41 11.3 0.7712.01 0.554 5.03 2.58 0.167 1.27 <0.138dieldrin ng/g dry

endosulfan II ng/g dryendrin ng/g dryHCB ng/g dry

Heptachlor ng/g dryheptachlor epoxide ng/g dry

mirex ng/g dry

2.01 0.554 5.03 2.58 0.167 1.27 <0.1387.84 2.37 4.87 <0.150 <0.121 <0.172 <0.138

<0.308 0.158 0.737 0.165 <0.121 <0.172 <0.1386.40 21.1 15.8 <0.150 <0.121 <0.172 <0.1380.764 0.233 <0.040 0.164 0.186 <0.172 <0.1381.31 3.08 2.50 0.537 0.138 <0.172 <0.138

<0.308 <0.120 <0.040 <0.150 <0.121 0.086 <0.138g g yPCB-1242 ng/g dryPCB-1248 ng/g dryPCB-1254 ng/g dryPCB-1260 ng/g dryPCB-1268 ng/g dry

PCB-TOTAL ng/g dry

<6.16 <2.40 <0.820 na na na na<6.16 <2.40 <0.820 na na na na<6.16 <2.40 <0.820 na na na na<6.16 <2.40 <0.820 na na na na4,309 2,288 3,708 na na na na4,309 2,288 3,708 31.9 16.7 38.5 21.2g g y

pentachloro-anisole ng/g dry1,2,3,4-Tetrachlorobenzene ng/g dry1,2,4,5-Tetrachlorobenzene ng/g dry

toxaphene ng/g dryTotal Chlordanes with 0.5 DL* ng/g dry

Total DDTs with 0.5 DL** ng/g dry

1.87 152 13.3 <0.150 <0.121 <0.172 <0.1381.36 16.0 1.63 <0.150 <0.121 <0.172 <0.138

<0.308 175 1.81 0.237 0.309 <0.172 <0.138<6.16 <2.40 <0.820 <1.49 <1.21 <1.72 <1.3824.5 18.0 38.2 35.0 16.5 68.5 52.536.2 49.4 44.1 16.8 4.77 48.6 6.69

OU3 1015

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

F&G

03-D

F&G

04-D

F&G

04se

-S

F&G

05sw

-D

F&G

05sw

-S

F&G

07ne

-D

F&G

07ne

-S

F&G

07se

-S

Sample Depth inches 12-31 12-44 0-12 12-20 0-12 12-48 0-12 0-12Moisture % 16 30.5 na na na 11.4 2.6 naPCB HOMOLOGS Cl1-PCB ng/g dw na na na na na 4.03 <2.04 naCl2-PCB ng/g dw na na na na na <2.1 <2.04 naCl3-PCB ng/g dw na na na na na 4.06 <2.04 naCl4-PCB ng/g dw na na na na na 15.2 <2.04 naCl5-PCB ng/g dw na na na na na 13.4 <2.04 naCl6-PCB ng/g dw na na na na na 8.92 2.32 naCl7-PCB ng/g dw na na na na na 4.46 <2.04 naCl8-PCB ng/g dw na na na na na 2.18 <2.04 naCl9-PCB ng/g dw na na na na na <2.1 2.73 naCl10-PCB ng/g dw na na na na na <2.1 <2.04 na

PCB CONGENERSPCB# 1 ng/g dw na na na na na 4.03 <0.020 naPCB# 7/9 ng/g dw na na na na na <0.021 <0.020 naPCB# 8/5 ng/g dw na na na na na 1.73 0.156 naPCB# 15 ng/g dw na na na na na <0.021 <0.020 naPCB# 16/32 ng/g dw na na na na na 1.13 <0.020 naPCB# 18/17 ng/g dw na na na na na <0.021 <0.020 naPCB# 22/51 ng/g dw na na na na na 0.266 <0.020 naPCB# 24/27 ng/g dw na na na na na <0.021 <0.020 naPCB# 25 ng/g dw na na na na na 1.58 0.136 naPCB# 26 ng/g dw na na na na na <0.021 <0.020 naPCB# 28 ng/g dw na na na na na 0.474 0.108 naPCB# 29 ng/g dw na na na na na 0.606 <0.020 naPCB# 30 ng/g dw na na na na na <0.021 <0.020 naPCB# 31 ng/g dw na na na na na <0.021 <0.020 naPCB# 33/20 ng/g dw na na na na na <0.021 <0.020 naPCB# 39 ng/g dw na na na na na <0.021 <0.020 naPCB# 40 ng/g dw na na na na na <0.021 <0.020 naPCB# 41/64 ng/g dw na na na na na 113 <0.020 naPCB# 42/59/37 ng/g dw na na na na na <0.021 <0.020 naPCB# 44 ng/g dw na na na na na 2.98 <0.020 naPCB# 45 ng/g dw na na na na na <0.021 <0.020 naPCB# 46 ng/g dw na na na na na 0.412 <0.020 naPCB# 47/75 ng/g dw na na na na na <0.021 <0.020 naPCB# 48 ng/g dw na na na na na 1.04 <0.020 naPCB# 49 ng/g dw na na na na na 0.295 0.119 naPCB# 52 ng/g dw na na na na na 3.98 0.119 naPCB# 53 ng/g dw na na na na na <0.021 <0.020 naPCB# 60/56 ng/g dw na na na na na 1.91 0.476 naPCB# 63 ng/g dw na na na na na <0.021 <0.020 naPCB# 66 ng/g dw na na na na na <0.021 0.078 naPCB# 67 ng/g dw na na na na na <0.021 <0.020 naPCB# 69 ng/g dw na na na na na <0.021 <0.020 naPCB# 70 ng/g dw na na na na na 1.32 <0.020 naPCB# 72 ng/g dw na na na na na <0.021 <0.020 naPCB# 74/61 ng/g dw na na na na na 3.31 <0.020 naPCB# 77 ng/g dw na na na na na <0.021 <0.020 naPCB# 81 ng/g dw na na na na na <0.021 <0.020 naPCB# 82 ng/g dw na na na na na 0.962 <0.020 na

OU3 1016

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

F&G

03-D

F&G

04-D

F&G

04se

-S

F&G

05sw

-D

F&G

05sw

-S

F&G

07ne

-D

F&G

07ne

-S

F&G

07se

-S

Sample Depth inches 12-31 12-44 0-12 12-20 0-12 12-48 0-12 0-12PCB# 83 ng/g dw na na na na na <0.021 <0.020 naPCB# 84 ng/g dw na na na na na <0.021 <0.020 naPCB# 85 ng/g dw na na na na na 0.207 0.0226 naPCB# 87/115 ng/g dw na na na na na 0.764 0.196 naPCB# 92 ng/g dw na na na na na <0.021 <0.020 naPCB# 95/80 ng/g dw na na na na na 0.911 0.133 naPCB# 97 ng/g dw na na na na na 1.54 <0.020 naPCB# 99 ng/g dw na na na na na 0.668 <0.020 naPCB# 101/90 ng/g dw na na na na na 3.03 0.0575 naPCB# 105 ng/g dw na na na na na 0.545 0.0411 naPCB# 107 ng/g dw na na na na na <0.021 <0.020 naPCB# 110 ng/g dw na na na na na 3.04 0.309 naPCB# 114 ng/g dw na na na na na <0.021 <0.020 naPCB# 118 ng/g dw na na na na na 1.72 0.0678 naPCB# 119 ng/g dw na na na na na <0.021 <0.020 naPCB# 126 ng/g dw na na na na na <0.021 <0.020 naPCB# 128 ng/g dw na na na na na 0.58 0.458 naPCB# 129 ng/g dw na na na na na 0.07 <0.020 naPCB# 130 ng/g dw na na na na na 0.269 0.294 naPCB# 135 ng/g dw na na na na na 0.222 <0.020 naPCB# 136 ng/g dw na na na na na 0.191 0.0236 naPCB# 138/160 ng/g dw na na na na na 2.46 0.598 naPCB# 141/179 ng/g dw na na na na na 0.763 0.186 naPCB# 146 ng/g dw na na na na na 0.181 0.103 naPCB# 149/123 ng/g dw na na na na na 0.773 0.179 naPCB# 151 ng/g dw na na na na na <0.021 <0.020 naPCB# 153/132 ng/g dw na na na na na 2.16 0.408 naPCB# 156 ng/g dw na na na na na 0.179 <0.020 naPCB# 157/173/201 ng/g dw na na na na na 0.143 <0.020 naPCB# 158 ng/g dw na na na na na 0.447 <0.020 naPCB# 166 ng/g dw na na na na na 0.142 <0.020 naPCB# 167 ng/g dw na na na na na <0.021 0.077 naPCB# 169 ng/g dw na na na na na <0.021 <0.020 naPCB# 170/190 ng/g dw na na na na na 0.602 0.195 naPCB# 171/202 ng/g dw na na na na na 0.4 <0.020 naPCB# 172 ng/g dw na na na na na 0.414 <0.020 naPCB# 174 ng/g dw na na na na na 0.275 <0.020 naPCB# 175 ng/g dw na na na na na 0.272 0.0565 naPCB# 176/137 ng/g dw na na na na na 0.079 0.121 naPCB# 177 ng/g dw na na na na na 0.0519 <0.020 naPCB# 178 ng/g dw na na na na na 0.0553 <0.020 naPCB# 180 ng/g dw na na na na na 1.17 0.263 naPCB# 183 ng/g dw na na na na na 0.55 0.172 naPCB# 185 ng/g dw na na na na na <0.021 <0.020 naPCB# 187 ng/g dw na na na na na 0.527 0.124 naPCB# 189 ng/g dw na na na na na 0.0666 <0.020 naPCB# 191 ng/g dw na na na na na <0.021 <0.020 naPCB# 193 ng/g dw na na na na na <0.021 0.0585 naPCB# 194 ng/g dw na na na na na 0.193 0.113 naPCB# 195/208 ng/g dw na na na na na 0.142 <0.020 naPCB# 196 ng/g dw na na na na na 0.91 <0.020 naPCB# 197 ng/g dw na na na na na 0.0722 <0.020 na

OU3 1017

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

F&G

03-D

F&G

04-D

F&G

04se

-S

F&G

05sw

-D

F&G

05sw

-S

F&G

07ne

-D

F&G

07ne

-S

F&G

07se

-S

Sample Depth inches 12-31 12-44 0-12 12-20 0-12 12-48 0-12 0-12PCB# 199 ng/g dw na na na na na 0.554 0.0811 naPCB# 200 ng/g dw na na na na na <0.021 <0.020 naPCB# 205 ng/g dw na na na na na 0.166 <0.020 naPCB# 206 ng/g dw na na na na na 0.376 0.167 naPCB# 207 ng/g dw na na na na na 1.14 2.56 naPCB# 209 ng/g dw na na na na na 0.21 0.0893 na

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw 0.0018 <00056 na na na na na na1,2,3,7,8-PeCDD ng/g dw 0.0038 <0.00281 na na na na na na1,2,3,4,7,8-HxCDD ng/g dw <0.0018 <0.00281 na na na na na na1,2,3,6,7,8-HxCDD ng/g dw 0.0241 0.005040 na na na na na na1,2,3,7,8,9-HxCDD ng/g dw 0.0111 0.003170 na na na na na na1,2,3,4,6,7,8-HpCDD ng/g dw 0.4142 0.018270 na na na na na naOCDD ng/g dw 4.4286 0.062880 na na na na na na2,3,7,8-TCDF ng/g dw 0.0168 0.002300 na na na na na na1,2,3,7,8-PeCDF ng/g dw 0.0249 <0.00281 na na na na na na2,3,4,7,8-PeCDF ng/g dw 0.0083 <0.00281 na na na na na na1,2,3,4,7,8-HxCDF ng/g dw 0.0100 <0.00281 na na na na na na1,2,3,6,7,8-HxCDF ng/g dw 0.0127 <0.00281 na na na na na na1,2,3,7,8,9-HxCDF ng/g dw <0.0018 <0.00281 na na na na na na2,3,4,6,7,8-HxCDF ng/g dw 0.0333 <0.00281 na na na na na na1,2,3,4,6,7,8-HpCDF ng/g dw 0.0701 0.009210 na na na na na na1,2,3,4,7,8,9-HpCDF ng/g dw 0.0044 <0.00281 na na na na na naOCDF ng/g dw 0.1099 <0.00562 na na na na na na

PCBs - TOTALSum of homologs ng/g dw na na na na na 55.4 13.2 naSUM PCB congeners w/ 0.5 DL ng/g dw na na na na na 169 8.96 nanumber detected PCB congeners (96 max) na na na na na 61 35 na

PCBs corrected*SUM PCB congeners * ng/g dw na na na na na 55.3 8.29 nanumber detected PCB congeners* (96 max) na na na na na 59 34 na

DioxinsSum dioxin congeners w / 0.5 dl ng/g dw 5.0641 0.1138 na na na na na naNumber detected congeners (17 max) 16 7 na na na na na na

TEQsPCB TEQ - Avian ng/g dw na na na na na 0.0027 0.0026 naDioxin + PCB TEQ Avian ng/g dw 0.0415 0.0066 na na na 0.0027 0.0026 naDioxin TEQ - avian ng/g dw 0.0415 0.0066 na na na na na na

PCB TEQ - Mammal ng/g dw na na na na na 0.0016 0.0012 naDioxin + PCB TEQ Mammal ng/g dw 0.0273 0.0045 na na na 0.0015 0.0012 naDioxin TEQ - Mammal ng/g dw 0.0273 0.0045 na na na na na na* (less congeners w / interference from non-target analytes)

OU3 1018

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

07sw

-D

F&G

07sw

-S

F&G

08ne

-D

F&G

08ne

-S

F&G

08se

-D

F&G

08se

-S

F&G

09ne

-D

F&G

09ne

-S

F&G

09nw

-D

12-30 0-12 12-43 0-12 12-48 0-12 12-40 0-12 12-31na na 15.2 1.81 na na na na na

na na 6.6 <1.26 na na na na nana na <2.38 <1.26 na na na na nana na 4.9 5.04 na na na na nana na 21 18.7 na na na na nana na 15.6 55.4 na na na na nana na 9.85 46.3 na na na na nana na 6.37 19.3 na na na na nana na 4.9 11 na na na na nana na 3.9 1.82 na na na na nana na <2.38 1.8 na na na na na

na na 6.6 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na 1.33 0.473 na na na na nana na <0.024 <0.013 na na na na nana na 1.48 1.81 na na na na nana na <0.024 <0.013 na na na na nana na 0.308 0.263 na na na na nana na <0.024 <0.013 na na na na nana na 2.39 2.35 na na na na nana na <0.024 <0.013 na na na na nana na 0.726 0.385 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 0.0754 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 0.159 na na na na nana na <0.024 1.52 na na na na nana na 198 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na 4.1 4.31 na na na na nana na <0.024 <0.013 na na na na nana na 0.529 0.17 na na na na nana na 0.651 <0.013 na na na na nana na 1.73 10.4 na na na na nana na 0.544 0.462 na na na na nana na 5.23 5.4 na na na na nana na <0.024 0.435 na na na na nana na 2.59 2.85 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na 1.77 1.42 na na na na nana na <0.024 <0.013 na na na na nana na 3.87 2.1 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na 1.25 2.75 na na na na na

OU3 1019

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

07sw

-D

F&G

07sw

-S

F&G

08ne

-D

F&G

08ne

-S

F&G

08se

-D

F&G

08se

-S

F&G

09ne

-D

F&G

09ne

-S

F&G

09nw

-D

12-30 0-12 12-43 0-12 12-48 0-12 12-40 0-12 12-31na na <0.024 0.9 na na na na nana na <0.024 <0.013 na na na na nana na 0.272 1.33 na na na na nana na 0.59 3.85 na na na na nana na <0.024 1.25 na na na na nana na 1.07 6.67 na na na na nana na 1.79 3.11 na na na na nana na 0.788 4.74 na na na na nana na 3.84 9.69 na na na na nana na 0.752 1.95 na na na na nana na 0.0601 0.179 na na na na nana na 3.24 13.9 na na na na nana na <0.024 <0.013 na na na na nana na 1.92 5.06 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 <0.013 na na na na nana na 0.366 3.73 na na na na nana na 0.103 0.791 na na na na nana na 0.281 1.52 na na na na nana na 0.169 1.2 na na na na nana na 0.198 0.272 na na na na nana na 2.43 9.13 na na na na nana na 0.723 3.51 na na na na nana na 0.153 4.26 na na na na nana na 0.844 4.52 na na na na nana na <0.024 0.119 na na na na nana na 2.27 9.98 na na na na nana na 0.216 1.71 na na na na nana na 0.355 0.871 na na na na nana na 0.131 0.818 na na na na nana na 0.278 1.71 na na na na nana na 0.066 1.48 na na na na nana na <0.024 <0.013 na na na na nana na 0.731 1.77 na na na na nana na 1.07 2.29 na na na na nana na 1.13 3.17 na na na na nana na 0.236 1.59 na na na na nana na 0.34 0.416 na na na na nana na 0.191 0.795 na na na na nana na <0.024 0.664 na na na na nana na 0.0837 <0.013 na na na na nana na 1.26 3.03 na na na na nana na 0.315 1.51 na na na na nana na 0.0884 0.546 na na na na nana na 0.623 2.3 na na na na nana na 0.305 1 na na na na nana na <0.024 <0.013 na na na na nana na <0.024 0.239 na na na na nana na 0.412 2.19 na na na na nana na 0.175 0.3 na na na na nana na 1.16 2.16 na na na na nana na 0.145 2.09 na na na na na

OU3 1020

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

07sw

-D

F&G

07sw

-S

F&G

08ne

-D

F&G

08ne

-S

F&G

08se

-D

F&G

08se

-S

F&G

09ne

-D

F&G

09ne

-S

F&G

09nw

-D

12-30 0-12 12-43 0-12 12-48 0-12 12-40 0-12 12-31na na 2.57 3.12 na na na na nana na <0.024 <0.013 na na na na nana na 0.0825 0.299 na na na na nana na 1.56 0.154 na na na na nana na 2.34 1.66 na na na na nana na 0.647 1.8 na na na na na

na na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na nana na na na na na na na na

na na 75.5 161 na na na na nana na 272 169 na na na na nana na 63 68 na na na na na

na na 73.1 158 na na na na nana na 61 67 na na na na na

na na na na na na na na nana na na na na na na na na

na na 0.0032 0.0022 na na na na nana na 0.0031 0.0021 na na na na nana na na na na na na na na

na na 0.0019 0.0028 na na na na nana na 0.0019 0.0027 na na na na nana na na na na na na na na

OU3 1021

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

09nw

-S

F&G

09se

-D

F&G

09se

-S

F&G

09sw

-D

F&G

09sw

-S

F&G

10ne

-D

F&G

10ne

-S

F&G

10se

-S

F&G

11ne

-S

F&G

11nw

-S

0-12 12-32 0-12 12-39 0-12 12-42 0-12 0-12 0-12 0-12na na na na na na na na na na

na na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

OU3 1022

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

09nw

-S

F&G

09se

-D

F&G

09se

-S

F&G

09sw

-D

F&G

09sw

-S

F&G

10ne

-D

F&G

10ne

-S

F&G

10se

-S

F&G

11ne

-S

F&G

11nw

-S

0-12 12-32 0-12 12-39 0-12 12-42 0-12 0-12 0-12 0-12na na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

OU3 1023

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

09nw

-S

F&G

09se

-D

F&G

09se

-S

F&G

09sw

-D

F&G

09sw

-S

F&G

10ne

-D

F&G

10ne

-S

F&G

10se

-S

F&G

11ne

-S

F&G

11nw

-S

0-12 12-32 0-12 12-39 0-12 12-42 0-12 0-12 0-12 0-12na na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

na na na na na na na na na nana na na na na na na na na nana na na na na na na na na na

OU3 1024

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

11se

-D

F&G

11se

-S

F&G

11sw

-D

F&G

11sw

-S

F&G

12ne

-D

F&G

12ne

-S

F&G

12nw

-D

F&G

12nw

-S

12-30 0-12 12-48 0-12 12-40 0-12 12-46 0-1210.6 6.29 na na na na na na

<8.96 <5.2 na na na na na na10.8 <5.2 na na na na na na33.3 13.7 na na na na na na183 72.1 na na na na na na136 77.1 na na na na na na73.6 49.1 na na na na na na30.3 27.8 na na na na na na27.1 22.2 na na na na na na13.5 8.6 na na na na na na

<8.96 6.65 na na na na na na

25.4 9.17 na na na na na na1.01 <0.052 na na na na na na6.7 0.494 na na na na na na

3.09 <0.052 na na na na na na4.37 1.73 na na na na na na2.92 <0.052 na na na na na na2.39 8.41 na na na na na na1.18 0.266 na na na na na na33.9 33 na na na na na na0.501 <0.052 na na na na na na12.6 3.25 na na na na na na

<0.090 <0.052 na na na na na na<0.090 <0.052 na na na na na na

5.55 <0.052 na na na na na na3.81 <0.052 na na na na na na

<0.090 <0.052 na na na na na na3.89 <0.052 na na na na na na794 165 na na na na na na6.16 0.836 na na na na na na36.3 30.3 na na na na na na

<0.090 0.678 na na na na na na2.02 2.25 na na na na na na

<0.090 0.347 na na na na na na22.3 7.56 na na na na na na9.73 1 na na na na na na18.7 87.3 na na na na na na

<0.090 3.56 na na na na na na28.7 10.6 na na na na na na

<0.090 <0.052 na na na na na na5.92 <0.052 na na na na na na

<0.090 5.27 na na na na na na<0.090 0.983 na na na na na na

20.7 1.28 na na na na na na<0.090 <0.052 na na na na na na

28.3 7.39 na na na na na na<0.090 <0.052 na na na na na na<0.090 <0.052 na na na na na na

5.81 4.44 na na na na na na

OU3 1025

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

11se

-D

F&G

11se

-S

F&G

11sw

-D

F&G

11sw

-S

F&G

12ne

-D

F&G

12ne

-S

F&G

12nw

-D

F&G

12nw

-S

12-30 0-12 12-48 0-12 12-40 0-12 12-46 0-12<0.090 <0.052 na na na na na na<0.090 <0.052 na na na na na na

3.29 2.32 na na na na na na9.06 3.03 na na na na na na

<0.090 <0.052 na na na na na na13.2 3.43 na na na na na na10.5 <0.052 na na na na na na8.21 3.49 na na na na na na28.9 22.9 na na na na na na5.74 1.86 na na na na na na1.69 5.25 na na na na na na29.2 18.4 na na na na na na

<0.090 <0.052 na na na na na na20.6 12 na na na na na na

<0.090 <0.052 na na na na na na<0.090 <0.052 na na na na na na

2.85 2.72 na na na na na na0.574 1.44 na na na na na na0.76 5.04 na na na na na na2.08 1.03 na na na na na na0.427 0.187 na na na na na na16.7 9.96 na na na na na na6.39 4.42 na na na na na na2.08 2.01 na na na na na na6.92 5.36 na na na na na na2.47 1.38 na na na na na na18.4 7 na na na na na na2.91 <0.052 na na na na na na2.37 1.97 na na na na na na8.96 0.915 na na na na na na0.719 1.23 na na na na na na1.4 1.34 na na na na na na

<0.090 <0.052 na na na na na na3.05 2.05 na na na na na na4.73 6.8 na na na na na na1.59 6.66 na na na na na na2.25 0.928 na na na na na na

<0.090 0.445 na na na na na na0.985 0.909 na na na na na na1.8 0.986 na na na na na na

0.744 0.063 na na na na na na6.71 3.37 na na na na na na2.08 1.55 na na na na na na

<0.090 0.363 na na na na na na5.57 2.04 na na na na na na0.789 1.65 na na na na na na

<0.090 <0.052 na na na na na na<0.090 <0.052 na na na na na na

3.01 1.36 na na na na na na2.05 1.36 na na na na na na8.17 3.95 na na na na na na0.415 4 na na na na na na

OU3 1026

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

11se

-D

F&G

11se

-S

F&G

11sw

-D

F&G

11sw

-S

F&G

12ne

-D

F&G

12ne

-S

F&G

12nw

-D

F&G

12nw

-S

12-30 0-12 12-48 0-12 12-40 0-12 12-46 0-1210.3 8.36 na na na na na na0.349 <0.052 na na na na na na0.432 1.18 na na na na na na7.78 4.74 na na na na na na5.72 3.86 na na na na na na2.72 6.65 na na na na na na

<0.00112 <0.0011 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na0.1010 0.0800 na na na na na na0.2200 0.3840 na na na na na na

<0.0011 <0.0011 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na<0.0056 <0.0053 na na na na na na0.0378 <0.0053 na na na na na na

<0.0056 <0.0053 na na na na na na0.2180 0.2030 na na na na na na

517 282 na na na na na na1,365 568 na na na na na na

75 69 na na na na na na

510 273 na na na na na na72 65 na na na na na na

0.3906 0.4970 na na na na na na5 4 na na na na na na

0.0127 0.0072 na na na na na na0.0216 0.0153 na na na na na na0.0090 0.0083 na na na na na na

0.0103 0.0054 na na na na na na0.0186 0.0128 na na na na na na0.0084 0.0075 na na na na na na

OU3 1027

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

12se

-D

F&G

12se

-S

F&G

12sw

-D

F&G

12sw

-S

F&G

13ne

-D

F&G

13ne

-S

F&G

13nw

-D

F&G

13nw

-S

12-46 0-12 12-46 0-12 12-46 0-12 12-46 0-1215.5 4.71 36.7 5.92 na na na na

1.23 <1.94 <2.36 <21.6 na na na na<0.684 <1.94 <2.36 <21.6 na na na na

3.71 7.64 3.68 <21.6 na na na na12.4 11.5 13.8 <21.6 na na na na16.1 41.7 17.5 <21.6 na na na na14.5 44.7 12 <21.6 na na na na8.21 14.2 3.96 <21.6 na na na na4.48 6.25 <2.36 <21.6 na na na na1.52 2.37 <2.36 <21.6 na na na na

<0.684 <1.94 <2.36 <21.6 na na na na

1.23 3.24 1.8 25.2 na na na na<0.007 <0.019 <0.024 <0.216 na na na na0.393 0.624 0.714 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na0.137 1.68 0.152 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na1.39 0.706 0.0774 <0.216 na na na na

0.0319 <0.019 0.112 <0.216 na na na na1.47 1.56 2.2 0.258 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na0.516 0.676 0.844 1.11 na na na na0.0568 0.501 <0.024 <0.216 na na na na<0.007 0.0976 <0.024 <0.216 na na na na0.108 <0.019 0.175 <0.216 na na na na

<0.007 <0.019 <0.024 0.281 na na na na<0.007 2.42 0.123 <0.216 na na na na<0.007 0.396 <0.024 <0.216 na na na na

36.6 9.39 18.3 4.89 na na na na0.0627 0.11 0.314 <0.216 na na na na1.79 2.73 2.83 <0.216 na na na na

<0.007 11.3 <0.024 <0.216 na na na na0.119 0.148 0.199 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na3.93 12.7 1.01 <0.216 na na na na

0.329 0.302 0.619 1.46 na na na na2.01 3.28 3.16 1.74 na na na na

0.232 0.48 <0.024 <0.216 na na na na0.848 0.971 2.1 6.33 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na<0.007 <0.019 0.573 <0.216 na na na na0.667 0.192 0.098 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na0.627 1.67 1.24 1.5 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na1.76 1.24 1.63 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na<0.007 <0.019 <0.024 <0.216 na na na na

1.16 2.78 0.899 0.612 na na na na

OU3 1028

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

12se

-D

F&G

12se

-S

F&G

12sw

-D

F&G

12sw

-S

F&G

13ne

-D

F&G

13ne

-S

F&G

13nw

-D

F&G

13nw

-S

12-46 0-12 12-46 0-12 12-46 0-12 12-46 0-120.328 1.02 <0.024 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na0.277 0.411 0.371 <0.216 na na na na0.771 2.73 0.847 1.33 na na na na0.49 <0.019 <0.024 <0.216 na na na na2.51 4.96 2.22 1.31 na na na na

0.247 2.99 1.85 0.741 na na na na1.18 2.79 1.48 0.903 na na na na2.51 6.22 3.2 1.33 na na na na

0.529 1.74 0.57 0.699 na na na na0.0367 0.0273 0.107 <0.216 na na na na4.64 10.4 3.78 2.28 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na1.47 3.59 2.15 0.997 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na<0.007 <0.019 <0.024 <0.216 na na na na0.627 3.39 0.54 0.482 na na na na

<0.007 <0.019 0.126 <0.216 na na na na0.939 2.43 0.583 0.935 na na na na0.524 1 0.43 0.224 na na na na0.162 0.0483 0.248 0.108 na na na na3.1 9.39 2.64 3.19 na na na na1.82 3.16 0.978 0.463 na na na na

0.863 4.84 0.46 <0.216 na na na na1.48 3.88 1.09 0.611 na na na na0.86 1.51 0.43 0.589 na na na na3.06 8.62 2.28 3.37 na na na na

<0.007 1.23 0.294 <0.216 na na na na0.27 0.606 0.134 <0.216 na na na na

0.588 0.953 1.75 <0.216 na na na na0.299 2.77 0.122 <0.216 na na na na0.149 1.13 0.0616 <0.216 na na na na

<0.007 <0.019 <0.024 <0.216 na na na na0.628 1.52 0.502 0.703 na na na na1.43 1.16 0.25 <0.216 na na na na

0.367 1.23 0.12 0.56 na na na na0.528 1.45 0.243 <0.216 na na na na0.283 0.0703 0.218 1.08 na na na na0.319 1.07 0.172 <0.216 na na na na

<0.007 0.53 0.0869 <0.216 na na na na0.373 <0.019 0.174 <0.216 na na na na1.86 3.43 1.05 0.935 na na na na0.44 1.46 0.528 <0.216 na na na na

<0.007 0.123 <0.024 <0.216 na na na na1.72 1.78 0.607 0.108 na na na na

0.232 0.161 <0.024 <0.216 na na na na<0.007 <0.019 <0.024 <0.216 na na na na0.0402 0.173 <0.024 <0.216 na na na na0.937 1.26 0.281 <0.216 na na na na0.431 0.421 0.0932 <0.216 na na na na1.6 1.65 0.502 <0.216 na na na na

0.193 1.15 0.0118 <0.216 na na na na

OU3 1029

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

12se

-D

F&G

12se

-S

F&G

12sw

-D

F&G

12sw

-S

F&G

13ne

-D

F&G

13ne

-S

F&G

13nw

-D

F&G

13nw

-S

12-46 0-12 12-46 0-12 12-46 0-12 12-46 0-120.904 0.998 0.303 <0.216 na na na na0.0177 <0.019 <0.024 <0.216 na na na na0.134 0.166 0.0506 <0.216 na na na na0.673 0.682 0.333 0.231 na na na na0.842 1.69 1.53 15.6 na na na na0.487 0.916 0.128 0.759 na na na na

<0.0012 <0.0010 <0.0016 <0.0011 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 0.0879 <0.0079 0.0335 na na na na0.1040 0.7530 0.6210 0.4170 na na na na

<0.0012 <0.0010 <0.0016 <0.0011 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na<0.0058 <0.0052 <0.0079 <0.0053 na na na na0.2500 0.2210 0.0608 <0.0105 na na na na

62.8 131 56.8 108 na na na na99.7 164 75.4 89.4 na na na na70 72 68 35 na na na na

62.8 127 57.3 52.8 na na na na68 67 66 33 na na na na

0.1431 0.8731 0.6738 0.4831 na na na na3 4 3 3 na na na na

0.0010 0.0029 0.0031 0.0272 na na na na0.0100 0.0109 0.0153 0.0354 na na na na0.0090 0.0081 0.0122 0.0081 na na na na

0.0007 0.0025 0.0018 0.0122 na na na na0.0081 0.0100 0.0117 0.0192 na na na na0.0073 0.0075 0.0099 0.0069 na na na na

OU3 1030

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

13sw

-D

F&G

13sw

-S

F&G

14-D

F&G

14-S

F&G

15ne

-D

F&G

15ne

-S

F&G

15nw

-S

F&G

15se

-D

12-46 0-12 12-22 0-12 12-36 0-12 0-12 12-48na na 8.46 1.5 8.24 7.67 na 34.0

na na na na <7.16 3.33 na <1.88na na na na <7.16 <2.02 na <1.88na na na na 9.79 11.2 na 4.01na na na na 15.5 37.6 na 13.9na na na na 10.2 72.6 na 14.3na na na na 16.8 49.2 na 10.1na na na na 10.2 12 na 4.22na na na na <7.16 6.05 na <1.88na na na na <7.16 3.22 na <1.88na na na na <7.16 <2.02 na <1.88

na na na na 40.5 3.33 na 15.1na na na na <0.072 <0.020 na <0.019na na na na 0.541 1.89 na 1.53na na na na <0.072 <0.020 na <0.019na na na na 1.8 0.666 na 0.615na na na na <0.072 <0.020 na <0.019na na na na 0.565 4.51 na 0.911na na na na 0.748 0.191 na 0.235na na na na <0.072 4.2 na 1.92na na na na <0.072 <0.020 na <0.019na na na na 2.71 0.633 na 0.332na na na na <0.072 0.458 na <0.019na na na na <0.072 <0.020 na <0.019na na na na 0.449 0.146 na <0.019na na na na 3.3 <0.020 na <0.019na na na na 0.232 0.374 na <0.019na na na na <0.072 <0.020 na <0.019na na na na 1550 <0.020 na 627na na na na <0.072 0.375 na 0.714na na na na <0.072 6.15 na 2.34na na na na <0.072 <0.020 na <0.019na na na na 1.14 <0.020 na 0.147na na na na <0.072 <0.020 na <0.019na na na na 4.29 6.28 na 4.86na na na na 0.543 1.1 na 0.303na na na na 3.47 9.44 na 2.19na na na na <0.072 <0.020 na 0.546na na na na 2.96 2.84 na 0.55na na na na <0.072 <0.020 na <0.019na na na na <0.072 <0.020 na <0.019na na na na 0.524 1.6 na 0.259na na na na <0.072 <0.020 na <0.019na na na na 0.417 5.52 na 0.352na na na na 1.67 <0.020 na 0.165na na na na 0.476 4.25 na 1.48na na na na <0.072 <0.020 na <0.019na na na na <0.072 <0.020 na <0.019na na na na 1.14 2.94 na 0.783

OU3 1031

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

13sw

-D

F&G

13sw

-S

F&G

14-D

F&G

14-S

F&G

15ne

-D

F&G

15ne

-S

F&G

15nw

-S

F&G

15se

-D

12-46 0-12 12-22 0-12 12-36 0-12 0-12 12-48na na na na <0.072 1.05 na 0.253na na na na <0.072 <0.020 na <0.019na na na na 0.22 1.46 na 0.212na na na na 0.274 5.46 na 0.577na na na na <0.072 <0.020 na <0.019na na na na 0.497 10.4 na 2.49na na na na <0.072 4.84 na 0.918na na na na 0.557 6.33 na 0.705na na na na 1.43 12.3 na 1.57na na na na 0.681 3.65 na 0.591na na na na <0.072 0.198 na 0.147na na na na 3.93 16.2 na 4.41na na na na <0.072 <0.020 na <0.019na na na na 1.5 7.74 na 1.62na na na na <0.072 <0.020 na <0.019na na na na <0.072 <0.020 na <0.019na na na na <0.072 3.52 na 0.74na na na na 0.46 0.853 na <0.019na na na na 1.25 2.27 na 0.299na na na na 1.18 1.96 na 0.53na na na na 0.197 0.408 na 0.0667na na na na 5.38 10.3 na 2.68na na na na 0.716 4.35 na 0.9na na na na 0.332 2.83 na 0.282na na na na 1.44 4.9 na 0.974na na na na 1.42 2.39 na 0.668na na na na 2.26 10.2 na 2.47na na na na <0.072 1.56 na <0.019na na na na 0.313 0.533 na 0.174na na na na 0.192 1.84 na 0.329na na na na 0.687 0.449 na <0.019na na na na 0.335 1.2 na 0.0909na na na na <0.072 <0.020 na <0.019na na na na 1.17 <0.020 na <0.019na na na na 0.81 0.677 na 1.18na na na na 2.95 1.1 na 0.288na na na na <0.072 0.869 na 0.353na na na na 0.282 0.192 na 0.132na na na na 0.304 0.951 na 0.12na na na na <0.072 0.615 na 0.0258na na na na 0.114 0.141 na <0.019na na na na 1.63 3.22 na 1.07na na na na 0.632 1.33 na 0.164na na na na 0.385 <0.020 na <0.019na na na na 0.87 2.57 na 0.594na na na na 1.05 0.274 na 0.0742na na na na <0.072 <0.020 na 0.224na na na na <0.072 0.119 na <0.019na na na na 0.603 1.37 na 0.156na na na na <0.072 0.416 na 0.0379na na na na 2.06 1.74 na 0.415na na na na 1.58 0.879 na <0.019

OU3 1032

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

13sw

-D

F&G

13sw

-S

F&G

14-D

F&G

14-S

F&G

15ne

-D

F&G

15ne

-S

F&G

15nw

-S

F&G

15se

-D

12-46 0-12 12-22 0-12 12-36 0-12 0-12 12-48na na na na 0.392 0.829 na <0.019na na na na <0.072 <0.020 na <0.019na na na na 0.097 0.286 na <0.019na na na na <0.072 0.975 na 0.165na na na na 4.72 2.25 na 1.47na na na na 0.61 15 na 0.241

na na <0.0005 <0.0004 <0.0013 <0.0011 na <0.0015na na <0.0024 <0.0022 <0.0067 <0.0054 na <0.0075na na <0.0024 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0027 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0040 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0177 0.0059 <0.0067 0.1200 na <0.0075na na 0.1412 0.0456 <0.0133 2.2900 na 0.2280na na <0.0005 0.0022 <0.0013 <0.0011 na <0.0015na na 0.0027 <0.0022 <0.0067 <0.0054 na <0.0075na na <0.0024 <0.0022 <0.0067 <0.0054 na <0.0075na na <0.0024 <0.0022 <0.0067 <0.0054 na <0.0075na na <0.0024 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0028 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0049 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0068 <0.0022 <0.0067 0.0209 na <0.0075na na 0.0026 <0.0022 <0.0067 <0.0054 na <0.0075na na 0.0066 <0.0044 <0.0133 0.1290 na 0.1360

na na na na 80.4 197 na 51.2na na na na 1,664 212 na 693na na na na 60 68 na 62

na na na na 72.2 197 na 50.5na na na na 57 66 na 59

na na 0.1921 0.0671 0.0513 2.4617 na 0.2781na na 11 4 1 5 na 3

na na na na 0.0092 0.0032 na 0.0025na na 0.0048 0.0054 0.0194 0.0119 na 0.0140na na 0.0048 0.0054 0.0103 0.0087 na 0.0116

na na na na 0.0045 0.0033 na 0.0014na na 0.0043 0.0030 0.0127 0.0117 na 0.0107na na 0.0043 0.0030 0.0083 0.0083 na 0.0094

OU3 1033

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

15se

-S

F&G

16C

-D

F&G

16C

-S

F&G

16nw

-D

F&G

16nw

-S

F&G

16sw

-D

F&G

16sw

-S

0-12 12-26 0-12 12-27 0-12 12-27 0-129.93 1.39 2.24 17.3 0.99 10.2 6.07

<3.8 3.37 <3.32 <3.3 <6.16 5.3 2.77<3.8 60.6 289 <3.3 184 14.5 13.9<3.8 91.2 279 5.8 500 50.3 37.116.6 87.4 962 14.4 917 243 35636.8 140 6400 24.5 1450 992 138038.2 82.2 4340 17.1 936 659 82639 27.6 883 8.23 152 209 983

32.8 14.1 169 4.35 28 79.2 43.67.26 4.12 25.5 3.91 9.05 12.9 7.33<3.8 2.67 79 <3.3 130 23.4 56.2

<0.031 3.37 <0.033 11.8 8.93 5.3 2.77<0.031 5.47 22.6 <0.033 12.2 3.41 1.550.496 31.2 195 0.683 84 2.84 4.73

<0.031 23.9 71 <0.033 87.9 8.22 7.660.705 10.6 45.9 <0.033 49.3 5.78 6.060.546 22.3 65.7 0.187 104 8.13 7.530.233 8.83 29.1 0.764 46.7 8.94 2.73

<0.031 1.66 4.18 0.135 7.77 0.587 0.5530.243 2.75 11.9 3.26 10.2 0.012 0.0041

<0.031 3.5 <0.033 <0.033 15.2 <0.024 <0.0080.886 20 61.1 1.46 155 14.1 9.41

<0.031 0.262 <0.033 <0.033 2.65 1.09 2.36<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.0080.262 11.2 27.6 <0.033 53.8 7.07 4.51

<0.031 10 33.1 <0.033 55.2 4.66 3.55<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 0.3610.815 3.36 27.4 <0.033 27 8.12 9.466.82 20.9 225 358 206 112 81.3

0.174 6.03 26 0.0165 44 10.1 11.62.87 14.2 189 4.14 84.2 28.4 480.16 3.75 20.3 <0.033 21.7 9.26 7.56

0.356 1.18 7.51 <0.033 8.37 3.05 3.240.37 6.42 20 <0.033 16.7 12.6 35.3

<0.031 <0.250 12.8 1.62 34.6 <0.024 <0.0080.975 10.3 148 0.657 71.1 22.8 64.73.71 200 1660 2.96 161 1080 1100

0.417 2.24 12.8 0.28 15.8 6.75 7.111.73 9.23 55 2.4 93.4 22.8 27.4

<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.008<0.031 5.33 44.8 <0.033 45.9 23.2 14.70.199 0.152 6.05 <0.033 5.68 0.965 2.08

<0.031 <0.250 4.06 <0.033 <0.062 <0.024 <0.0081.03 12 135 1.64 164 43.1 49.1

<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.0081.01 5.34 42.3 0.732 71.7 16.1 20.1

<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.008<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.008

1.32 4.23 175 1.4 33.6 22.3 40.5

OU3 1034

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

15se

-S

F&G

16C

-D

F&G

16C

-S

F&G

16nw

-D

F&G

16nw

-S

F&G

16sw

-D

F&G

16sw

-S

0-12 12-26 0-12 12-27 0-12 12-27 0-120.626 2.02 52.3 0.262 14.5 11.7 12.83.55 9.58 352 <0.033 56.8 47.9 83.4

0.746 4.6 232 <0.033 44.1 30 50.82.12 9.51 514 1.31 98.6 59.6 105

0.852 5.06 215 0.386 40.1 24.8 425.81 23.3 857 3.92 276 188 1942.25 9 378 2.47 68.8 43.5 80.42.66 8.89 437 2.45 71.9 56.2 89.84.68 20.9 1080 3.32 231 146 1911.04 3.59 232 0.986 55.7 24.2 52.1

0.0866 0.416 20.7 <0.033 6.11 3.69 10.58.47 29.2 1380 5.87 275 253 294

<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.0082.08 8.85 468 2.16 177 78.6 131

0.548 0.879 17 <0.033 4.16 3.09 4.45<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.008

1.43 4.57 265 0.933 51.4 32.5 54.31.08 1.67 104 0.596 17.6 9.63 <0.008

0.605 1.91 105 0.584 18.3 10.7 12.91.3 3.12 176 0.528 28.8 20.8 38.1

0.532 <0.250 52.4 <0.033 17.6 <0.024 <0.0087.42 19.5 952 4.64 245 149 1904.39 6.07 284 1.45 51.4 42.4 58.6

0.896 3.16 142 0.55 28 17.6 28.84.65 10.4 522 1.95 88.1 113 1092.16 4.55 167 0.636 26.4 28 36.49.44 19.3 1050 3.95 261 182 209

0.537 2.82 198 <0.033 43.4 19.1 30.71.6 2.02 30.4 0.325 7.69 7.28 6.4

0.766 3.27 259 0.779 39.1 23.2 48.42.7 0.121 9.06 0.204 1.93 1.05 2.37

0.278 1.73 48.5 0.283 15.7 8.46 7.24<0.031 <0.250 <0.033 <0.033 <0.062 <0.024 <0.008

2.93 4.02 206 <0.033 24.7 25.6 8292.36 1.81 25.7 1.15 6.64 8.58 6.341.65 1.38 15.6 1.32 5.39 4.3 2.963.78 2.07 54.1 0.572 13.5 18.8 13.7

0.242 0.344 3.96 0.314 1.26 1.41 0.8630.432 1.57 108 0.341 17.7 10.1 10.61.87 1.31 32.2 0.203 8.35 9.44 7.811.05 0.566 12.5 0.202 2.17 4.43 3.2612 6.92 223 1.47 36.3 65.4 56.9

3.25 2.1 43.9 0.572 10.7 15 10.3<0.031 <0.250 <0.033 <0.033 <0.062 6.76 <0.008

8.92 5.01 139 1.41 18.8 34.1 39.10.283 0.214 4.81 0.671 1.63 1.04 0.806

<0.031 <0.250 7.04 <0.033 2.8 1.48 <0.0080.239 0.277 7.11 <0.033 2.21 2.51 1.187.37 3.85 32.3 1.38 5.78 17 9.982.48 0.649 15.4 0.0894 2.05 7.72 3.8910.3 2.94 46 1.78 6.66 23.7 12.5

0.404 0.828 2.02 0.341 0.208 0.618 0.159

OU3 1035

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

15se

-S

F&G

16C

-D

F&G

16C

-S

F&G

16nw

-D

F&G

16nw

-S

F&G

16sw

-D

F&G

16sw

-S

0-12 12-26 0-12 12-27 0-12 12-27 0-129.33 3 36.3 0.253 4.7 18.3 9.42

0.983 0.354 4.29 <0.033 0.443 2.24 0.8690.274 0.505 1.77 0.178 0.507 2.33 0.4085.23 2.28 22.3 2.02 4.22 10.3 6.572.03 1.84 3.21 1.89 4.82 2.62 0.7631.94 2.67 79 0.284 130 23.4 56.2

<0.0011 <0.0020 <0.0020 <0.0015 <0.0010 0.0068 <0.0011<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 0.2150 <0.0075 0.1080 0.1600 0.13700.1040 <0.0199 1.5600 0.2570 0.9510 1.8300 1.3800

<0.0011 <0.0020 <0.0020 <0.0015 <0.0010 <0.0014 <0.0011<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 0.0131 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0069 <0.0053<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 <0.0158 <0.0053<0.0055 <0.0099 <0.0102 0.0112 0.0186 0.0505 0.0426<0.0055 <0.0099 <0.0102 <0.0075 <0.0050 0.0252 <0.00530.1780 <0.0199 2.7000 0.0796 0.1580 0.4390 0.4030

177 513 13,428 83.2 4,309 2,289 3,706180 726 15,103 450 4,471 3,444 4,83375 82 83 62 85 83 81

173 505 13,218 79.0 4,255 2,252 3,65273 79 81 59 83 81 79

0.1410 0.0765 1.8381 0.3148 1.1063 2.1219 1.58983 1 4 4 5 8 5

0.0042 0.0041 0.0559 0.0044 0.0205 0.0090 0.01140.0127 0.0194 0.0715 0.0160 0.0284 0.0280 0.02010.0085 0.0153 0.0161 0.0117 0.0080 0.0191 0.0087

0.0031 0.0051 0.1870 0.0024 0.0525 0.0250 0.03750.0100 0.0175 0.2018 0.0118 0.0600 0.0435 0.04590.0069 0.0124 0.0153 0.0095 0.0076 0.0187 0.0085

OU3 1036

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesMoisture % PCB HOMOLOGS Cl1-PCB ng/g dwCl2-PCB ng/g dwCl3-PCB ng/g dwCl4-PCB ng/g dwCl5-PCB ng/g dwCl6-PCB ng/g dwCl7-PCB ng/g dwCl8-PCB ng/g dwCl9-PCB ng/g dwCl10-PCB ng/g dw

PCB CONGENERSPCB# 1 ng/g dwPCB# 7/9 ng/g dwPCB# 8/5 ng/g dwPCB# 15 ng/g dwPCB# 16/32 ng/g dwPCB# 18/17 ng/g dwPCB# 22/51 ng/g dwPCB# 24/27 ng/g dwPCB# 25 ng/g dwPCB# 26 ng/g dwPCB# 28 ng/g dwPCB# 29 ng/g dwPCB# 30 ng/g dwPCB# 31 ng/g dwPCB# 33/20 ng/g dwPCB# 39 ng/g dwPCB# 40 ng/g dwPCB# 41/64 ng/g dwPCB# 42/59/37 ng/g dwPCB# 44 ng/g dwPCB# 45 ng/g dwPCB# 46 ng/g dwPCB# 47/75 ng/g dwPCB# 48 ng/g dwPCB# 49 ng/g dwPCB# 52 ng/g dwPCB# 53 ng/g dwPCB# 60/56 ng/g dwPCB# 63 ng/g dwPCB# 66 ng/g dwPCB# 67 ng/g dwPCB# 69 ng/g dwPCB# 70 ng/g dwPCB# 72 ng/g dwPCB# 74/61 ng/g dwPCB# 77 ng/g dwPCB# 81 ng/g dwPCB# 82 ng/g dw

F&G

17-D

F&G

17-S

F&G

20-D

F&G

20-S

12-48 0-12 12-29 0-1214.5 4.29 17.2 10.9

na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

OU3 1037

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 83 ng/g dwPCB# 84 ng/g dwPCB# 85 ng/g dwPCB# 87/115 ng/g dwPCB# 92 ng/g dwPCB# 95/80 ng/g dwPCB# 97 ng/g dwPCB# 99 ng/g dwPCB# 101/90 ng/g dwPCB# 105 ng/g dwPCB# 107 ng/g dwPCB# 110 ng/g dwPCB# 114 ng/g dwPCB# 118 ng/g dwPCB# 119 ng/g dwPCB# 126 ng/g dwPCB# 128 ng/g dwPCB# 129 ng/g dwPCB# 130 ng/g dwPCB# 135 ng/g dwPCB# 136 ng/g dwPCB# 138/160 ng/g dwPCB# 141/179 ng/g dwPCB# 146 ng/g dwPCB# 149/123 ng/g dwPCB# 151 ng/g dwPCB# 153/132 ng/g dwPCB# 156 ng/g dwPCB# 157/173/201 ng/g dwPCB# 158 ng/g dwPCB# 166 ng/g dwPCB# 167 ng/g dwPCB# 169 ng/g dwPCB# 170/190 ng/g dwPCB# 171/202 ng/g dwPCB# 172 ng/g dwPCB# 174 ng/g dwPCB# 175 ng/g dwPCB# 176/137 ng/g dwPCB# 177 ng/g dwPCB# 178 ng/g dwPCB# 180 ng/g dwPCB# 183 ng/g dwPCB# 185 ng/g dwPCB# 187 ng/g dwPCB# 189 ng/g dwPCB# 191 ng/g dwPCB# 193 ng/g dwPCB# 194 ng/g dwPCB# 195/208 ng/g dwPCB# 196 ng/g dwPCB# 197 ng/g dw

F&G

17-D

F&G

17-S

F&G

20-D

F&G

20-S

12-48 0-12 12-29 0-12na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

OU3 1038

F and G St. Marsh fill areaPCBs and Dioxins/Furans

Sample Number

Sample Depth inchesPCB# 199 ng/g dwPCB# 200 ng/g dwPCB# 205 ng/g dwPCB# 206 ng/g dwPCB# 207 ng/g dwPCB# 209 ng/g dw

DIOXIN CONGENERS (2,3,7,8 -)2,3,7,8-TCDD ng/g dw1,2,3,7,8-PeCDD ng/g dw1,2,3,4,7,8-HxCDD ng/g dw1,2,3,6,7,8-HxCDD ng/g dw1,2,3,7,8,9-HxCDD ng/g dw1,2,3,4,6,7,8-HpCDD ng/g dwOCDD ng/g dw2,3,7,8-TCDF ng/g dw1,2,3,7,8-PeCDF ng/g dw2,3,4,7,8-PeCDF ng/g dw1,2,3,4,7,8-HxCDF ng/g dw1,2,3,6,7,8-HxCDF ng/g dw1,2,3,7,8,9-HxCDF ng/g dw2,3,4,6,7,8-HxCDF ng/g dw1,2,3,4,6,7,8-HpCDF ng/g dw1,2,3,4,7,8,9-HpCDF ng/g dwOCDF ng/g dw

PCBs - TOTALSum of homologs ng/g dwSUM PCB congeners w/ 0.5 DL ng/g dwnumber detected PCB congeners (96 max)

PCBs corrected*SUM PCB congeners * ng/g dwnumber detected PCB congeners* (96 max)

DioxinsSum dioxin congeners w / 0.5 dl ng/g dwNumber detected congeners (17 max)

TEQsPCB TEQ - Avian ng/g dwDioxin + PCB TEQ Avian ng/g dwDioxin TEQ - avian ng/g dw

PCB TEQ - Mammal ng/g dwDioxin + PCB TEQ Mammal ng/g dwDioxin TEQ - Mammal ng/g dw* (less congeners w / interference from non-target analytes)

F&G

17-D

F&G

17-S

F&G

20-D

F&G

20-S

12-48 0-12 12-29 0-12na na na nana na na nana na na nana na na nana na na nana na na na

<0.0004 <0.0004 <0.0005 <0.0004<0.0020 <0.0019 <0.0025 <0.0019<0.0020 <0.0019 <0.0025 <0.0019<0.0020 <0.0019 <0.0025 <0.00190.0020 <0.0019 <0.0025 <0.00190.0744 0.0094 0.0330 0.04650.9225 0.0578 0.3022 0.42080.0006 <0.0004 0.0034 0.0018

<0.0020 <0.0019 0.0033 0.0025<0.0020 <0.0019 <0.0025 <0.00190.0055 <0.0019 <0.0025 <0.0019

<0.0020 <0.0019 <0.0025 <0.0019<0.0020 <0.0019 <0.0025 <0.00190.0025 <0.0019 <0.0025 0.00300.0247 <0.0019 0.0069 0.01040.0021 <0.0019 <0.0025 <0.00190.0449 <0.0038 0.0058 0.0101

na na na nana na na nana na na na

na na na nana na na na

1.0412 0.0788 0.3614 0.493510 3 7 8

na na na na0.0044 0.0029 0.0073 0.00500.0044 0.0029 0.0073 0.0050

na na na na0.0043 0.0024 0.0039 0.00340.0043 0.0024 0.0039 0.0034

OU3 1039

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

F&G

03-D

F&G

04-D

F&G

04se

-S

F&G

05sw

-D

Sample Depth inches 12-31 12-44 0-12 12-20% Moisture % 16.0 30.5 na nanaphthalene ng/g dw 33.5 <2.09 na na1-methylnaphthalene ng/g dw 41.2 <2.09 na na2-methylnaphthalene ng/g dw 32.8 <2.09 na na2,6-dimethylnaphthalene ng/g dw 15.6 <2.09 na na1,6,7-Trimethyl-naphthalene ng/g dw 7.60 <2.09 na naC1-naphthalenes ng/g dw 74.0 <2.09 na naC2-naphthalenes ng/g dw 43.5 <2.09 na naC3-naphthalenes ng/g dw 28.1 <2.09 na naC4-naphthalenes ng/g dw 26.3 <2.09 na nabiphenyl ng/g dw 2.39 <2.09 na naacenaphthalene ng/g dw 70.6 <2.09 na naacenaphthene ng/g dw 4.27 <2.09 na nafluorene ng/g dw 14.7 <2.09 na naC1-fluorenes ng/g dw 39.3 <2.09 na naC2-fluorenes ng/g dw 30.5 <2.09 na naC3-fluorenes ng/g dw 65.8 3.34 na naphenanthrene ng/g dw 81.0 2.13 na na1-methylphenanthrene ng/g dw 27.5 <2.09 na naanthracene ng/g dw 150 <2.09 na naC1-Phenanthrenes & Anthracenes ng/g dw 94.0 <2.09 na naC2-Phenanthrenes & Anthracenes ng/g dw 92.2 <2.09 na naC3-Phenanthrenes & Anthracenes ng/g dw 82.6 2.30 na naC4-Phenanthrenes & Anthracenes ng/g dw 92.4 2.17 na nafluoranthene ng/g dw 337 5.81 na napyrene ng/g dw 610 7.01 na naC1-Fluoranthenes & Pyrenes ng/g dw 382 3.18 na nachrysene ng/g dw 313 3.42 na naC1-chrysenes ng/g dw 166 2.39 na naC2-chrysenes ng/g dw 141 3.29 na naC3-chrysenes ng/g dw 58.2 <2.09 na naC4-chrysenes ng/g dw 15.1 <2.09 na naBenzo(a)anthracene ng/g dw 115 <2.09 na nabenzo(b)fluoranthene ng/g dw 224 5.18 na nabenzo(k)fluoranthene ng/g dw 64.1 <2.09 na nabenzo(a)pyrene ng/g dw 140 4.06 na nabenzo(e)pyrene ng/g dw 132 3.86 na naperylene ng/g dw 85.7 5.47 na naDibenz(a,h)anthracene ng/g dw 17.7 <2.09 na naindeno(1,2,3-cd)pyrene ng/g dw 67.1 3.68 na nabenzo(g,h,i)perylene ng/g dw 72.1 3.18 na nadibenzothiophene ng/g dw 5.26 <2.09 na naC1-dibenzothiophenes ng/g dw 11.1 <2.09 na naC2-dibenzothiophenes ng/g dw 24.5 <2.09 na naC3-dibenzothiophenes ng/g dw 33.9 <2.09 na naSum LPAHs with 0.5 dl (2-3 rings) ng/g dw 1,150 30Sum HPAH with 0.5 dl (>3 rings) ng/g dw 3,014 60Sum PAH with 0.5 dl ng/g dw 4,164 90Number PAHs detected (44 max) 44 16

OU3 1040

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

05sw

-S F&

G07

ne-D

F&G

07ne

-S

F&G

07se

-S

0-12 12-48 0-12 0-12na 11.4 2.60 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana 8.45 <6.13 nana <6.31 <6.13 nana <6.31 6.20 nana 14.2 8.74 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana <6.31 <6.13 nana 12.5 8.01 nana 18.5 22.9 nana <6.31 <6.13 nana <6.31 <6.13 nana 14.2 14.3 nana 20.2 11.6 nana 24.0 14.0 nana 28.2 19.5 nana 30.7 41.5 nana 33.2 36.8 nana 26.0 22.8 nana 29.7 22.8 nana 44.4 21.9 nana 64.1 32.9 nana 73.1 52.9 nana 14.8 17.1 nana 8.84 24.1 nana 28.3 25.5 nana <6.31 7.64 nana 12.0 17.5 nana 25.5 16.5 nana 18.0 30.4 nana <6.31 <6.13 nana 15.9 12.8 nana 20.9 15.8 nana <6.31 <6.13 nana <6.31 <6.13 nana 6.64 6.47 nana 9.31 <6.13 na

187 151474 418662 56925 25

OU3 1041

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

07sw

-D

F&G

07sw

-S

F&G

08ne

-D

F&G

08ne

-S

12-30 0-12 12-43 0-12na na 15.2 1.81na na <7.17 21.7na na <7.17 45.5na na <7.17 59.5na na <7.17 63.7na na <7.17 32.1na na 9.00 105na na <7.17 185na na 10.1 261na na 9.70 263na na <7.17 8.67na na <7.17 8.10na na <7.17 11.8na na <7.17 19.3na na <7.17 75.2na na 8.61 162na na 19.7 273na na 20.6 346na na <7.17 143na na <7.17 55.6na na 17.9 465na na 50.2 855na na 120 1,137na na 131 836na na 35.3 519na na 41.2 513na na 64.3 745na na 21.7 390na na 80.3 572na na 151 1,212na na 135 1,047na na 25.8 231na na 11.4 308na na 28.6 33.8na na <7.17 276na na 13.3 206na na 30.6 11.1na na 45.0 289na na <7.17 <3.78na na 16.9 39.0na na 25.0 <3.78na na <7.17 24.2na na <7.17 96.9na na 21.4 276na na 41.8 345

443 5,432803 7,138

1,246 12,57027 42

OU3 1042

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

08se

-D

F&G

08se

-S

F&G

09ne

-D

F&G

09ne

-S

12-48 0-12 12-40 0-12na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

OU3 1043

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

09nw

-D

F&G

09nw

-S

F&G

09se

-D

F&G

09se

-S

12-31 0-12 12-32 0-12na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

OU3 1044

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

09sw

-D

F&G

09sw

-S

F&G

10ne

-D

F&G

10ne

-S

12-39 0-12 12-42 0-12na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

OU3 1045

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

10se

-S

F&G

11ne

-S

F&G

11nw

-S

F&G

11se

-D

0-12 0-12 0-12 12-30na na na 10.6na na na <26.89na na na <26.89na na na 33.6na na na <26.89na na na <26.89na na na 53.8na na na 79.9na na na 130na na na 275na na na <26.89na na na <26.89na na na <26.89na na na <26.89na na na 50.1na na na 86.8na na na 141na na na 298na na na 62.5na na na 57.3na na na 216na na na 334na na na 364na na na 331na na na 596na na na 549na na na 311na na na 311na na na 744na na na 636na na na 757na na na 187na na na 174na na na 298na na na 60.3na na na 181na na na 217na na na 270na na na 41.7na na na 138na na na 166na na na 28.3na na na 62.2na na na 134na na na 151

2,6206,0158,635

36

OU3 1046

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

11se

-S

F&G

11sw

-D

F&G

11sw

-S

F&G

12ne

-D

0-12 12-48 0-12 12-406.29 na na na

<15.63 na na na<15.63 na na na<15.63 na na na<15.63 na na na<15.63 na na na<15.63 na na na<15.63 na na na

21.7 na na na280 na na na

<15.63 na na na<15.63 na na na<15.63 na na na<15.63 na na na

144 na na na101 na na na324 na na na

<15.63 na na na22.52 na na na

<15.63 na na na150 na na na417 na na na737 na na na476 na na na35.3 na na na110 na na na307 na na na114 na na na244 na na na382 na na na350 na na na74.9 na na na19.2 na na na57.4 na na na

<15.63 na na na21.0 na na na124 na na na30.4 na na na

<15.63 na na na30.8 na na na58.1 na na na

<15.63 na na na38.3 na na na137 na na na244 na na na

2,7742,4025,177

28

OU3 1047

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

12ne

-S

F&G

12nw

-D

F&G

12nw

-S

F&G

12se

-D

0-12 12-46 0-12 12-46na na na 15.45na na na 4.87na na na 2.12na na na 4.78na na na <2.05na na na <2.05na na na 6.90na na na 3.80na na na 2.52na na na 3.64na na na 2.31na na na 2.50na na na <2.05na na na <2.05na na na <2.05na na na 2.90na na na 9.63na na na 31.07na na na 3.80na na na 5.61na na na 14.69na na na 12.54na na na 9.92na na na 18.36na na na 104na na na 93.96na na na 30.49na na na 51.93na na na 31.65na na na 37.40na na na 45.90na na na 16.70na na na 33.89na na na 81.49na na na 17.95na na na 47.42na na na 55.35na na na 22.60na na na 10.76na na na 53.51na na na 55.08na na na <2.05na na na <2.05na na na 2.46na na na 2.40

14779794437

OU3 1048

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

12se

-S

F&G

12sw

-D

F&G

12sw

-S

F&G

13ne

-D

0-12 12-46 0-12 12-464.71 36.70 5.92 na17.00 <7.05 <65.61 na<5.81 <7.05 <65.61 na7.08 <7.05 <65.61 na

<5.81 <7.05 <65.61 na<5.81 <7.05 <65.61 na10.92 <7.05 <65.61 na8.03 <7.05 <65.61 na10.29 <7.05 <65.61 na20.86 10.51 <65.61 na<5.81 <7.05 <65.61 na26.11 <7.05 <65.61 na<5.81 <7.05 <65.61 na<5.81 <7.05 <65.61 na<5.81 <7.05 <65.61 na11.46 <7.05 <65.61 na30.50 <7.05 <65.61 na217 13.35 <65.61 na

16.48 <7.05 <65.61 na16.37 <7.05 <65.61 na57.21 8.36 <65.61 na34.47 11.48 <65.61 na22.95 12.69 <65.61 na42.21 13.36 <65.61 na371 26.00 <65.61 na333 31.99 <65.61 na

84.53 14.79 <65.61 na144 8.28 <65.61 na

65.79 23.19 <65.61 na62.46 31.45 75.20 na53.35 38.07 <65.61 na18.24 8.58 <65.61 na86.70 <7.05 <65.61 na202 17.90 <65.61 na

47.41 <7.05 <65.61 na119 8.18 <65.61 na117 14.74 <65.61 na

52.62 9.46 <65.61 na22.24 <7.05 <65.61 na126 8.97 <65.61 na115 12.84 <65.61 na6.96 <7.05 <65.61 na

<5.81 <7.05 <65.61 na9.01 <7.05 <65.61 na7.22 <7.05 <65.61 na569 130 755

2,046 279 7312,615 409 1,486

36 20 1

OU3 1049

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

13ne

-S

F&G

13nw

-D

F&G

13nw

-S

F&G

13sw

-D

0-12 12-46 0-12 12-46na na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na nana na na na

OU3 1050

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

13sw

-S

F&G

14-D

F&G

14-S

F&G

15ne

-D

0-12 12-22 0-12 12-36na 8.46 1.50 8.24na 2.21 <1.51 <21.55na <1.60 <1.51 <21.55na <1.60 <1.51 <21.55na <1.60 <1.51 <21.55na <1.60 <1.51 <21.55na 2.01 <1.51 <21.55na 1.68 <1.51 30.66na 3.01 <1.51 204na 4.21 <1.51 607na <1.60 <1.51 <21.55na 5.16 <1.51 <21.55na <1.60 <1.51 <21.55na <1.60 <1.51 <21.55na 5.63 <1.51 130na 5.51 <1.51 127na <1.60 <1.51 114na 9.20 0.75 <21.55na 3.05 <1.51 <21.55na 8.05 <1.51 <21.55na 12.11 <1.51 73.29na 12.91 <1.51 146na 21.99 <1.51 330na 63.43 <1.51 419na 39.76 2.44 25.19na 53.30 2.64 46.20na 47.66 <1.51 174na 27.73 1.61 63.81na 38.96 <1.51 132na 112 2.09 540na 67.44 <1.51 852na 20.07 <1.51 203na 17.56 <1.51 <21.55na 30.34 2.38 <21.55na 5.77 <1.51 32.44na 17.77 1.66 24.95na 29.81 <1.51 88.10na 242 2.02 439na <1.60 <1.51 <21.55na 4.57 1.60 <21.55na 23.69 1.68 50.47na <1.60 <1.51 <21.55na 2.23 <1.51 54.72na 5.88 <1.51 156na 9.26 <1.51 170

167 17 2,320798 27 3,106964 45 5,42634 10 26

OU3 1051

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

15ne

-S

F&G

15nw

-S

F&G

15se

-D

F&G

15se

-S

0-12 0-12 12-48 0-127.67 na 34.01 9.93

<6.09 na <5.63 43.92<6.09 na <5.63 <9.25<6.09 na <5.63 <9.25<6.09 na <5.63 <9.25<6.09 na <5.63 <9.259.05 na <5.63 <9.25

<6.09 na <5.63 <9.257.22 na 7.53 <9.258.30 na 19.38 <9.25

<6.09 na <5.63 <9.25<6.09 na <5.63 <9.25<6.09 na <5.63 <9.25<6.09 na <5.63 <9.25<6.09 na <5.63 <9.256.73 na <5.63 <9.2515.12 na 12.35 13.0154.67 na 81.86 <9.256.36 na 9.87 <9.257.56 na 16.78 <9.2521.79 na 32.88 <9.2518.98 na 19.25 18.8119.15 na 12.85 38.2530.27 na 29.03 45.58125 na 210 <9.25111 na 214 9.63

42.25 na 72.84 48.2867.33 na 103 9.7542.02 na 51.61 28.8778.89 na 42.45 90.46112 na 47.16 114

41.29 na 16.18 34.5142.62 na 83.74 <9.2579.79 na 124 10.7824.60 na 35.38 <9.2546.03 na 86.53 <9.2564.45 na 66.03 18.5978.90 na 42.61 57.8812.87 na 15.97 <9.2547.81 na 71.44 <9.2553.66 na 56.34 11.49<6.09 na <5.63 <9.25<6.09 na <5.63 <9.258.64 na <5.63 <9.25

<6.09 na <5.63 12.18239 278 243

1,088 1,350 4881,327 1,629 731

30 27 17

OU3 1052

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

16C

-D

F&G

16C

-S

F&G

16nw

-D

F&G

16nw

-S

12-26 0-12 12-27 0-121.39 2.24 17.25 0.998.96 155 <9.89 117

<7.48 46.36 <9.89 <18.4911.95 67.75 <9.89 36.377.74 64.29 <9.89 <18.49

<7.48 30.66 <9.89 <18.4919.41 114 <9.89 52.2517.03 156 <9.89 <18.4915.96 278 <9.89 26.2721.78 353 11.30 45.63<7.48 19.22 <9.89 19.41<7.48 <9.94 <9.89 <18.49<7.48 <9.94 <9.89 <18.49<7.48 25.47 <9.89 <18.4910.54 207 <9.89 <18.4920.16 565 <9.89 39.3327.85 819 11.56 81.5515.35 277 24.23 64.947.85 239 <9.89 <18.49

<7.48 <9.94 <9.89 <18.4931.41 893 18.92 67.4546.07 1,225 27.23 96.4260.18 987 66.65 12359.95 547 109 66.4820.09 36.01 65.35 28.0335.12 101.93 72.74 24.9253.31 274 60.91 30.9028.34 57.21 51.95 <18.4979.02 97.11 93.89 26.14314 135 302 94.81501 135 450 155137 37.41 126 52.95

<7.48 <9.94 24.65 <18.49<7.48 <9.94 47.06 <18.4915.80 13.09 <9.89 <18.4915.49 30.28 <9.89 <18.4969.36 <9.94 64.60 24.58218 75.79 234 92.97

11.37 <9.94 14.50 <18.4910.85 <9.94 28.58 <18.4945.27 21.88 50.84 21.42<7.48 27.34 <9.89 <18.49<7.48 162 <9.89 <18.4916.59 382 11.23 31.7327.03 289 27.37 34.09408 7,084 348 929

1,612 1,900 1,775 7012,021 8,984 2,123 1,630

33 36 24 25

OU3 1053

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

16sw

-D

F&G

16sw

-S

F&G

17-D

F&G

17-S

12-27 0-12 12-48 0-1210.15 6.07 14.52 4.2920.41 24.03 1.98 2.419.03 8.64 <1.79 <1.4611.30 12.57 <1.79 1.477.80 5.17 <1.79 <1.46

<7.22 3.22 <1.79 <1.4620.32 21.22 2.15 2.1924.95 18.89 <1.79 <1.4657.57 38.19 <1.79 <1.4673.40 66.09 <1.79 <1.46<7.22 2.81 <1.79 <1.46<7.22 1.23 1.88 <1.46<7.22 1.23 <1.79 <1.46<7.22 3.42 <1.79 <1.4649.32 30.47 <1.79 2.11123 84.00 <1.79 2.11168 132 6.99 2.73

48.94 45.74 16.30 4.1741.85 29.56 3.12 <1.46<7.22 4.77 7.35 <1.46176 114 9.82 2.27292 182 6.76 2.80293 204 3.67 2.29192 112 <1.79 2.51

11.96 53.35 63.35 7.9928.97 56.67 64.61 8.4495.72 70.35 23.29 4.8725.68 38.61 32.40 4.4950.19 39.08 16.97 4.66162 95.11 10.55 13.61208 112 7.06 6.50

49.34 45.02 <1.79 2.34<7.22 20.59 32.64 2.70<7.22 35.15 43.01 6.62<7.22 8.25 11.70 1.49<7.22 20.53 37.95 5.3123.67 34.92 21.73 5.33157 34.14 13.73 16.36

<7.22 7.46 4.76 <1.46<7.22 20.63 20.51 4.4514.26 28.14 19.56 6.35<7.22 2.90 <1.79 <1.4633.85 18.84 <1.79 <1.4680.86 55.64 <1.79 <1.4684.60 47.11 <1.79 <1.461,631 1,146 72 361,050 844 428 1052,682 1,990 500 141

31 44 26 27

OU3 1054

F St. Marsh fill areaPAH Compounds

Sample Number

Uni

ts

Sample Depth inches% Moisture %naphthalene ng/g dw1-methylnaphthalene ng/g dw2-methylnaphthalene ng/g dw2,6-dimethylnaphthalene ng/g dw1,6,7-Trimethyl-naphthalene ng/g dwC1-naphthalenes ng/g dwC2-naphthalenes ng/g dwC3-naphthalenes ng/g dwC4-naphthalenes ng/g dwbiphenyl ng/g dwacenaphthalene ng/g dwacenaphthene ng/g dwfluorene ng/g dwC1-fluorenes ng/g dwC2-fluorenes ng/g dwC3-fluorenes ng/g dwphenanthrene ng/g dw1-methylphenanthrene ng/g dwanthracene ng/g dwC1-Phenanthrenes & Anthracenes ng/g dwC2-Phenanthrenes & Anthracenes ng/g dwC3-Phenanthrenes & Anthracenes ng/g dwC4-Phenanthrenes & Anthracenes ng/g dwfluoranthene ng/g dwpyrene ng/g dwC1-Fluoranthenes & Pyrenes ng/g dwchrysene ng/g dwC1-chrysenes ng/g dwC2-chrysenes ng/g dwC3-chrysenes ng/g dwC4-chrysenes ng/g dwBenzo(a)anthracene ng/g dwbenzo(b)fluoranthene ng/g dwbenzo(k)fluoranthene ng/g dwbenzo(a)pyrene ng/g dwbenzo(e)pyrene ng/g dwperylene ng/g dwDibenz(a,h)anthracene ng/g dwindeno(1,2,3-cd)pyrene ng/g dwbenzo(g,h,i)perylene ng/g dwdibenzothiophene ng/g dwC1-dibenzothiophenes ng/g dwC2-dibenzothiophenes ng/g dwC3-dibenzothiophenes ng/g dwSum LPAHs with 0.5 dl (2-3 rings) ng/g dwSum HPAH with 0.5 dl (>3 rings) ng/g dwSum PAH with 0.5 dl ng/g dwNumber PAHs detected (44 max)

F&G

20-D

F&G

20-S

12-29 0-1217.23 10.902.34 <1.63

<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 1.94<2.06 <1.63<2.06 2.487.08 4.01

<2.06 <1.633.44 <1.634.43 2.364.12 2.202.56 <1.63

<2.06 2.0522.61 12.4628.16 13.789.25 4.7514.26 7.678.50 4.777.90 4.392.71 <1.63

<2.06 <1.639.96 4.5721.84 13.216.35 3.0519.71 9.6614.36 8.556.28 2.63

<2.06 <1.6311.65 8.4412.07 7.77<2.06 <1.63<2.06 <1.63<2.06 <1.63<2.06 <1.63

41 29202 111243 14121 20

OU3 1055