DRAFT

PROPOSED WORk PLAN

SUPPLEHENTAL FIELD INVESTIGATIONS

REHampDIAL INVESTIGATION AND FEASIBILITY SIVDY

CANNONS EI~GINEERING CORP SITE

BRI DGEWATER KA

Prepared by

EC JORDAN CO P O BOX 7050

PORTLAND KAINE

JUNE 1985

585219 000100

)

Characterization as well as initial cleampn-up activities have proceeded at the Cannons Engineering Corp (CEC) site since its closure in November 1980 Activitias performed prior to the implementation of the remedial investigation program are as follows

Site investigations by the Mauacbusetts DEQE in 1981 revuled liquids were leaking fr0a11 onsite drums and storage tank fll Additionally samplee of soil waste and water wera collected by representatives of DEQE and the town of Bridgewater

Collection of samples in July 1982 by Ecology and Enviro11111ent Inc showed elevated levels of oraanics in soils

Clean-up activities by Jet Line Services in November 1982 included aaapling repackaging and ruoving of all onsite drwu Bulk storage tanks were pWDped out and cleaned

After Superfund desipation in Decber 1980 r adial innstiampation activitiu beampan at the CEC site EC Jordan Co (Jordan) vas subcontracted by tba NUS Corporation to provide data neceuary for capletion of a feasibility atudy vbicb will identify evaluate and prepare a conceptual desip for r dial activities

Field activities to provide this inforaation included

1 installation of eleven (11) anitorinamp valls

2 collection of aroundvater saplas fr011 fourtaan (14) suplinamp sites alavan (11) anitorinamp valls and tbrea (3) d011aatic vella

3 survey of water elevations in sll onsita 110nitorinamp walls

4 collection of four (4) surface water and sadillent saples fr011 tba drainage canal

S collection of surface soil froca eleven (ll) locations (sapling depths ranged frOCB 4 - 18)

6 collection of shallow and deep subsurface soil samples froca ten (10) 1110nitoring well locations (during installation)

7 investigation of air quality using a HNU photoionization meter and Tenax tubes (ambient air quality and air quality during drilling operations and

8 deurmination of in situ permeability

On Hay 21 1985 USEPA and NUS Corp representatives travelled to Portland Haine to meet with Jordan staff The purpose of the meeting was to review the remedial investigation phase of the project and obtain input regarding report preparation Jordan reviewed its understanding of the site based on field

_)

585219 0002 00

)

Characterization as well as initial cleampn-up activities have proceeded at the Cannons Engineering Corp (CEC) site since its closure in November 1980 Activitias performed prior to the implementation of the remedial investigation program are as follows

Site investigations by the Mauacbusetts DEQE in 1981 revuled liquids were leaking fr0a11 onsite drums and storage tank fll Additionally samplee of soil waste and water wera collected by representatives of DEQE and the town of Bridgewater

Collection of samples in July 1982 by Ecology and Enviro11111ent Inc showed elevated levels of oraanics in soils

Clean-up activities by Jet Line Services in November 1982 included aaapling repackaging and ruoving of all onsite drwu Bulk storage tanks were pWDped out and cleaned

After Superfund desipation in Decber 1980 r adial innstiampation activitiu beampan at the CEC site EC Jordan Co (Jordan) vas subcontracted by tba NUS Corporation to provide data neceuary for capletion of a feasibility atudy vbicb will identify evaluate and prepare a conceptual desip for r dial activities

Field activities to provide this inforaation included

1 installation of eleven (11) anitorinamp valls

2 collection of aroundvater saplas fr011 fourtaan (14) suplinamp sites alavan (11) anitorinamp valls and tbrea (3) d011aatic vella

3 survey of water elevations in sll onsita 110nitorinamp walls

4 collection of four (4) surface water and sadillent saples fr011 tba drainage canal

S collection of surface soil froca eleven (ll) locations (sapling depths ranged frOCB 4 - 18)

6 collection of shallow and deep subsurface soil samples froca ten (10) 1110nitoring well locations (during installation)

7 investigation of air quality using a HNU photoionization meter and Tenax tubes (ambient air quality and air quality during drilling operations and

8 deurmination of in situ permeability

On Hay 21 1985 USEPA and NUS Corp representatives travelled to Portland Haine to meet with Jordan staff The purpose of the meeting was to review the remedial investigation phase of the project and obtain input regarding report preparation Jordan reviewed its understanding of the site based on field

_)

585219 0002 00

observations and chemical data received from the CLP laboruories Jordan pointed out that there are so111e data gaps raaking it difficult to predict the extent and eventual fate of contaraination at the CEC site Additional sampling investigations proposed to fill these data gaps include

surface soil screening and sampling

surface watersediment sampling

subsurface investigation

groundwater samplina

biota sess111ant

leachability s tudies

vault surveys and

orampanic carbon content analysis of soUsediment

The ~cope of tbia proposed additional saaplinamp episode ia described in the tuka that follow

TASK 16A bull SURFACE SOIL SCREENING AND SAMPLING

Surface soils will be screened and selectively analyampci to further characterize the extent of contbullination Screenina saplas will be scanned with an oraanic vapor analyzer (OVA) selected suplea will be nt to the CLP laboratory for analysis t

A SO-fobt by SO-foot arid will ba established for OVA screenJna (Fipre A) Sitinamp rationale for this arid is delineated in Tabla A-1 Surface soil saaples (4 to 6 inches deep) will be collected with a trowel or tulip bulb planter fro center of arid block or fr011 an area within the grid block that visually appears contuinated approxiaately 40 auples will be collected for acreenina Suples will be transferred to a suple bottle for headapace analysis by the OVA Selected suples showing contbullination well above backshyground levels will be sent to the CLP laboratory (approxibullataly 10 samples see Table A-2) Highly contaminated areas will be ampDOte closely screened by the OVA to detanine approx imate libullits of contuinat ion

All subaitted surface soils will be analyzed for Hazardous Substance List (HSL) organics an additional 10 percent of the number of suples selected for CLP analysis will be subalitted as duplicates

TASK 17A bull SURFACE VATERSEDIHENT SAMPLING

Surface water and sediment samples will be collected and analyzed at various locations to further characterize contamination of these media For surface

5 85219 000300

waters physical data will also be collect ed A total of four (4) surface water and four (4) sediment samp l u will be collected for analysis (see Table 2) Samples will be t aken at the following locations (see Figure B)

the drainage canal upstream of First Street at a point that is believed to experience little impact from the runoff and traffic along First Str~et (S1-S)

the drainage canal downstream of Alllvets Memorial Highway at a point believed to experience little iJIIpact frOCD the highway (SW-6)

the onsite pond (SWmiddot7) and

pnvioua aupling location SW-3

Tbe follouing physical data will be collected

the velocity of the drainage canal

average dillensiona (width depth) of the drainage canal and

the depth of the onsite pond

Surface water and aedillent auples will be eollected middotin saaple bottles The velocity of the drainage canal will be Haaund using a velocity bulleter with Maaurnts taken at 02 ~d 0 6 of the total canal depth

Depth of the pond will be deter~~ined by uinamp a aurveyors stadia rod Rationmiddot ale for upetnbull canal downetrebull canal and pond saples are presented in Table Amiddotl S1middot3 will be nsbullpled to asseu if site conditions have aipifimiddot cantly chanaed since previous aaplinamp episodes in 1984

Surface water and diaent aaaples will be analyzed for HSL organics Duplicates (one each) for both sedtent and surface water and one field blank will be subllitted for identical analyses

TASK 18A SUBSURFACE INVESTIGATION

To sufficiently characterize and evaluate groundwater conditions at the CEC site additional borings and monitoring wells are ncaaended Four borings will be made and a monitoring wall installed in each at the locations shown in Figure B The subsurface investigation will include the following operationsitems

Borings will be drilled according to depths delineated i n Table A-3 and in locAtions shown in Figure B

The borings will be made using wash boring techniques and 4-inch I D driven or spun casing

Split-spoon sampling will be conducted at 5-foot intervals

585219 000400

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) Continuous air 1110n itor ing using an photoionization meter and explosivity meter will be conducted during drilling

Boring logs will be prepared for all holes

Wells will be completed using a Smiddotfoot section flush joint threaded schedule 40 2middotinch ID PVC screen with OOlOmiddotinch machine slotted opeiolinas

Well risers will be solid flush joint threaded Schedule 40 2middotinch ID PVC

Each well will be sealed by placing bentoniu in the annular space above the well screen

All drilling equipment wil l be suam cleaned aft er the cocaplation of ch borehole

Cuttings and drilling flu i ds will be disposed of as specifhd in the Site Operations Plan dated June 1984

Each well will be developed by alternately puapinamp and aurainamp with potable water obtained fr011 the local watu utility district hydrant

TASK 19A - GROUNDWATER SAMPLING

One round of groundwaur aapling will be conducted at four (4) new 110nitoring well loeniona (tftl-11 12 13A 138) and one (1) previou location (tftimiddotl) Wner levels will be uured at all onsite vella

HW-11 and 12 are shallow vella HWmiddot13A and B is a shallowdeep vdl pair (tited botta- of borings are 10 and 20 1 respectively see Tab~e l-3) Analysis of aapl fra- the shallow vella (tfW-11 to 13l) will identify if a very shallow contbullinant plue is present onsiu Data fr011 tfti-138 will be uud in conjunction with previously co11ected data to further characterize the extent of deep groundwater contination tftimiddot 8 will be resapled to identify any changes in groundwater quality since the previous sapling episodes in

1984

Groundwater samples will be analyzed for HSL organics One ( 1) duplicate sampa~pler blank and a trip blank will also be subllitted for analysis

TASJ A - BIOTA ASSESSMENT

A biota assessment will be conducted to characterize indigenous flora and fauna and to deten~ine if signs of stress are visually apparent The assessmiddot ment will be limited to the drainage canal and adjacent awarap area (see Figure B)

The biota assessment will be conducted in two parts A preliminary assessment of aquatic life will be performed by an experienced biologist Physical data obtained froca the streu (velocity DO temperature) will help support onsite

585219 000500

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observations of aquatic populations Additionally the terrestrial life in the immediate vHinity of the drainage canal and adjacent s wamp will be cata loged This survey will establish current si t e vegetation

Temperature readings and sample collection for dissolved oxygen (DO) analysis will be performed at various locations along t he drainage canal Exact locations will be determined i n the field Tuperature will be determined using a field ther1110111eter DO will be determined using the Winkler Hnbod analysis will be performed in a CDObile l aboratory

Upon COIIIpletion of the assess11ent current onsite receptors will be identified

Resulting data will aid i n the assessment of the site as a potential bwaan health hazard or as a source of wetland stress

TASK B bull LEACHABILITY SroDIES

A laachinamp test will be eonducted on a selected contuinampted soils at the CEC site Test results will aid in predictinamp the extent of possible containant leaching fr011 onsite soils

A sinalbull surface soil sample will be collected fr011 u area showinamp hiamph volatile and bullbullvolatile contaminant levels as detemind fr011 the previous uaplina episode The proposed suplina location ia SS-7

The collection of the soil sample will follow the M thodolOIY previously deacribcl ira Task 16A

Tba laboratory lucbability test proposcl i s a IKidification of the adsorption iaotbera caonly used for activated carbon adsorption capacity testiq The thod ia as follows an appropriate aount of soil is weiahed and placed in a 150-bull1 erh1enaeyer flask The a110unt of s oil used will be chosen on the buia of the aquaous concentration expected after the equilibriUII period The fluk ia then filled c011plately with distilled water aittina any beadapace (onaite aroundwatar is used if available) Flasks are sealed and aaitated for a 24shyto 36-hour equilibriu period

After the equilibriWD period soil particles will be allowed to settle for approximately 8 to 12 hours If non-settleable solids remain the aqueous phase will be pressure filtered The resultina supernatant or filtrate will be aubctitted for analysis The raw soil saple will be suhllitted for identical analysis (Two sample weights fr011 the single sampling location will be used in this test resulting in two aqueous s amples and one soil sample for analysis)

Once concentration va lues are determined and reported the concentrations of t he major contaminants on the leached soil phase will be computed using a mass balance and the known concentrations i n the aqueous phase Both of these values will be used to determine t he equilibriWI distribution between soil and water for the major volatile and semivolatile contaminants in the sample On

the basis of this information i t should be possible to approximate the extent of aroundwater contamination likely to occur by leaching at the representative

585219 000600

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) Continuous air 1110n itor ing using an photoionization meter and explosivity meter will be conducted during drilling

Boring logs will be prepared for all holes

Wells will be completed using a Smiddotfoot section flush joint threaded schedule 40 2middotinch ID PVC screen with OOlOmiddotinch machine slotted opeiolinas

Well risers will be solid flush joint threaded Schedule 40 2middotinch ID PVC

Each well will be sealed by placing bentoniu in the annular space above the well screen

All drilling equipment wil l be suam cleaned aft er the cocaplation of ch borehole

Cuttings and drilling flu i ds will be disposed of as specifhd in the Site Operations Plan dated June 1984

Each well will be developed by alternately puapinamp and aurainamp with potable water obtained fr011 the local watu utility district hydrant

TASK 19A - GROUNDWATER SAMPLING

One round of groundwaur aapling will be conducted at four (4) new 110nitoring well loeniona (tftl-11 12 13A 138) and one (1) previou location (tftimiddotl) Wner levels will be uured at all onsite vella

HW-11 and 12 are shallow vella HWmiddot13A and B is a shallowdeep vdl pair (tited botta- of borings are 10 and 20 1 respectively see Tab~e l-3) Analysis of aapl fra- the shallow vella (tfW-11 to 13l) will identify if a very shallow contbullinant plue is present onsiu Data fr011 tfti-138 will be uud in conjunction with previously co11ected data to further characterize the extent of deep groundwater contination tftimiddot 8 will be resapled to identify any changes in groundwater quality since the previous sapling episodes in

1984

Groundwater samples will be analyzed for HSL organics One ( 1) duplicate sampa~pler blank and a trip blank will also be subllitted for analysis

TASJ A - BIOTA ASSESSMENT

A biota assessment will be conducted to characterize indigenous flora and fauna and to deten~ine if signs of stress are visually apparent The assessmiddot ment will be limited to the drainage canal and adjacent awarap area (see Figure B)

The biota assessment will be conducted in two parts A preliminary assessment of aquatic life will be performed by an experienced biologist Physical data obtained froca the streu (velocity DO temperature) will help support onsite

585219 000500

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0

observations of aquatic populations Additionally the terrestrial life in the immediate vHinity of the drainage canal and adjacent s wamp will be cata loged This survey will establish current si t e vegetation

Temperature readings and sample collection for dissolved oxygen (DO) analysis will be performed at various locations along t he drainage canal Exact locations will be determined i n the field Tuperature will be determined using a field ther1110111eter DO will be determined using the Winkler Hnbod analysis will be performed in a CDObile l aboratory

Upon COIIIpletion of the assess11ent current onsite receptors will be identified

Resulting data will aid i n the assessment of the site as a potential bwaan health hazard or as a source of wetland stress

TASK B bull LEACHABILITY SroDIES

A laachinamp test will be eonducted on a selected contuinampted soils at the CEC site Test results will aid in predictinamp the extent of possible containant leaching fr011 onsite soils

A sinalbull surface soil sample will be collected fr011 u area showinamp hiamph volatile and bullbullvolatile contaminant levels as detemind fr011 the previous uaplina episode The proposed suplina location ia SS-7

The collection of the soil sample will follow the M thodolOIY previously deacribcl ira Task 16A

Tba laboratory lucbability test proposcl i s a IKidification of the adsorption iaotbera caonly used for activated carbon adsorption capacity testiq The thod ia as follows an appropriate aount of soil is weiahed and placed in a 150-bull1 erh1enaeyer flask The a110unt of s oil used will be chosen on the buia of the aquaous concentration expected after the equilibriUII period The fluk ia then filled c011plately with distilled water aittina any beadapace (onaite aroundwatar is used if available) Flasks are sealed and aaitated for a 24shyto 36-hour equilibriu period

After the equilibriWD period soil particles will be allowed to settle for approximately 8 to 12 hours If non-settleable solids remain the aqueous phase will be pressure filtered The resultina supernatant or filtrate will be aubctitted for analysis The raw soil saple will be suhllitted for identical analysis (Two sample weights fr011 the single sampling location will be used in this test resulting in two aqueous s amples and one soil sample for analysis)

Once concentration va lues are determined and reported the concentrations of t he major contaminants on the leached soil phase will be computed using a mass balance and the known concentrations i n the aqueous phase Both of these values will be used to determine t he equilibriWI distribution between soil and water for the major volatile and semivolatile contaminants in the sample On

the basis of this information i t should be possible to approximate the extent of aroundwater contamination likely to occur by leaching at the representative

585219 000600

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0

observations of aquatic populations Additionally the terrestrial life in the immediate vHinity of the drainage canal and adjacent s wamp will be cata loged This survey will establish current si t e vegetation

Temperature readings and sample collection for dissolved oxygen (DO) analysis will be performed at various locations along t he drainage canal Exact locations will be determined i n the field Tuperature will be determined using a field ther1110111eter DO will be determined using the Winkler Hnbod analysis will be performed in a CDObile l aboratory

Upon COIIIpletion of the assess11ent current onsite receptors will be identified

Resulting data will aid i n the assessment of the site as a potential bwaan health hazard or as a source of wetland stress

TASK B bull LEACHABILITY SroDIES

A laachinamp test will be eonducted on a selected contuinampted soils at the CEC site Test results will aid in predictinamp the extent of possible containant leaching fr011 onsite soils

A sinalbull surface soil sample will be collected fr011 u area showinamp hiamph volatile and bullbullvolatile contaminant levels as detemind fr011 the previous uaplina episode The proposed suplina location ia SS-7

The collection of the soil sample will follow the M thodolOIY previously deacribcl ira Task 16A

Tba laboratory lucbability test proposcl i s a IKidification of the adsorption iaotbera caonly used for activated carbon adsorption capacity testiq The thod ia as follows an appropriate aount of soil is weiahed and placed in a 150-bull1 erh1enaeyer flask The a110unt of s oil used will be chosen on the buia of the aquaous concentration expected after the equilibriUII period The fluk ia then filled c011plately with distilled water aittina any beadapace (onaite aroundwatar is used if available) Flasks are sealed and aaitated for a 24shyto 36-hour equilibriu period

After the equilibriWD period soil particles will be allowed to settle for approximately 8 to 12 hours If non-settleable solids remain the aqueous phase will be pressure filtered The resultina supernatant or filtrate will be aubctitted for analysis The raw soil saple will be suhllitted for identical analysis (Two sample weights fr011 the single sampling location will be used in this test resulting in two aqueous s amples and one soil sample for analysis)

Once concentration va lues are determined and reported the concentrations of t he major contaminants on the leached soil phase will be computed using a mass balance and the known concentrations i n the aqueous phase Both of these values will be used to determine t he equilibriWI distribution between soil and water for the major volatile and semivolatile contaminants in the sample On

the basis of this information i t should be possible to approximate the extent of aroundwater contamination likely to occur by leaching at the representative

585219 000600

) sampling location Estab lishment of this groundwater contamination pot ential will aid in the development of eriteria for determining the necessity of soil treatment or removal

All submitted samples 3) will be analyzed for CLP organics Duplicates will not be submitted

TASK C bull VAULT SURVEY

During the previous sampling episode aqueous samples WSmiddotl (vault east of the equipment buildinamp) and WSmiddotJ (septic tank west of the incinerator building) were found to be highly contaminated (Figure B) Consequently the quantity of the liquid i n the both the vault and sept ic tank should be established Liquid leve ls will be determi ned and the s i ze of the containers will be estillaud using probes Approxillampt ion of the liquid volumes is iiDJ)atamptive since lukinamp liquids r epresent a potential source of groundwater contuination No supl will be collected

TASJ D bull ORGANIC CARBON OCl CONTENT

Establishinamp DC content for n presantative suples of onsita soils will help estiaate the adsorption potential of the soU for the contsainants Thrse (3) soil supla locations will be chosen correspondina to varyinamp physical propermiddot ties axpectsd soil types include fill drained natural soil and soilsltnts in set areas Proposed suph locations are shown in Fiaure B 1lo (2)0 supl wil~ be collected at cb location a shallow (4middot to 6-ineh) and a dp (8- to z4middotincb) aupla

Shallow saaplaa will be collected with a tulip bulb plantar or band trowel Daap supl will be collected with a band auaer

Six (6) aaaplea will undarao analysis for OC

Ten percent of the total number of s uplas will be subllitted as duplicates

TASK E - DATA EVAWATION

Data resulting fr01111 the additional suplinamp effort (described in Tasks 16A-19A and Tasks A-D) and the required evaluat ion will be incorporated into the find remedial investiaation (Rl) report

The assessment presented as an addendum to the RI will consist of the followin_g

analytical results episode

implications of the

)

585219 000700

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from suples collected durinamp the supplemental samplinamp

new data

o conclusions and

o support araphics

0

585 219 00080 0

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I I TASK

16A

17A

18A

0

19A

)

5 85 219T 000400

TABLE A-I

RATIONALE FOR ADDITIONAL SAtPLINGIliVESTIGATIONS

RATIONALE

The 1984 sampling episodes revealed that the majority of the contaaination is in shallow surface soils Additionally contaaination was found to be scattered throughout site increasing the possibility for unidentified bot spots to ezist on site All areas of significant contuination must be identified since they represent a potential contact hazard and source of future groundwater contaaination

The upatre and downstreaa surface water sediaents in the dra i nage canal will be saapled to establi sh watersedi8ent quality entering and l eavi ng the site The previous upstreq sa~~ple (SW-2) was too close to First Steet the previous downatreu aa11ple did not account for contination originating fro western oat portion of aite Establishinamp the surfacesediAent quality in the pond will dete~ine i ts potential threat u a contuinant source

Previous surface soil suplinamp i dentified relatively biamph levels of contuiDamption at surface suple location SS-4 Installation of PIW-13A and MV-138 will provide aroundvater data downaradient of SS-4 Honitorinamp well MW-12 will provide aroUDdvater data dovnaradient of SS-7 and east of SS-4 Relatively hiah levels of contaaination were identified in surface soil suples SS-11 and in aroundvater sqplea taken fr011 PIW-8 Installation of KW-11 will provide additional aroundwater data dovnaradieot of SS-11 HW-8 and tile septic tank

Saplina proposed onitorina vella will allow for additional characterization of aroundvater 11 described in Tuk 18A HW-8 will be resupled to account for any chanaea in groundwater quality since the 1984 saplina episodes Water level data for all anitorinamp wells will be collected to evaluate seasonal fluctuation in water levels

Assessent of biota in drainaae canal and adjacent swa11p will establish possible onsite receptors as well as cataloa the terrestrial flora This baseline data will lielp identify possible huaan hazards andor wetland stress

Isolated areas of hiamph surface soil contabullination represent potential sources of aroundwater contamination By establishshying a site-specific leachate potential from a representative sample the relative stability of the current conditions can be estimated

TABLE A~ l (cont )

RATIONALE FOR ADDITIONAL SAHPLINGINVESTIGATIONS

RATIONALE

The liquid-containing vault and tank represent potential sou~cea of groundwater cootination middotThe volues of these containerized liquids bullust be detenlined to aueu their relative hazard

By establiahina OC content for representative naples the adsorption potential of the soil for the contuinants present can be estiaated

585219T 000500

)

NO OF SAMPLING

TASK DESCRIPTION LOCATIONS

6A Surface Soil - Screening plusmn45

tlO bull Sa~aplinamp

17A Surface Water 4 Sedient

19A Groundwa t er - SupliDI 5 - Wat e r Levels 14

Biota t 4 Aasesuent

0 Leachability Stgciiea

Vault Survey

Oraui c Carbon Content

585 219T 00060 0

~

ADDITIONAL SAMPLE DATA

NO OF NO OF SAMPLES SAMPLES SUBHITTED COLLECTED (INCL FOR ANALYSIS (INCL

SAMPLE TYPECRITERIA DUPL amp BLANKS) DUPL amp BLANKS)

50 Screening samples (OVA)

Samples selected fr011 plusmn11 ill OVA screeninamp

Surface water Ulples sed~ot saples

Proposed 110ni t oriog wells All ons i t e onitoring welb

110 Te~~pe rature

Supernatant Raw soil auples

Water levels container d zes (data collected onlite)

Shallow and deep suples collected at each location

TABLE A-3

SUBSURFACE IIIVESTIGATIONS - SPECIFICATIONS

BorinsWell

1111-11

1111-12

1111-IJA

1111-138

Estiuted Depth of Borins

10 0 ft

10 0 ft

20 0 ft

10 0 ft

Well Installation Screened Interval

10 0 - 5 0 ft

10 0 - 5 0 ft

200 - 15 0 ft

100 - 50 ft

5 85 219 000) 0 0

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Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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I I TASK

16A

17A

18A

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19A

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5 85 219T 000400

TABLE A-I

RATIONALE FOR ADDITIONAL SAtPLINGIliVESTIGATIONS

RATIONALE

The 1984 sampling episodes revealed that the majority of the contaaination is in shallow surface soils Additionally contaaination was found to be scattered throughout site increasing the possibility for unidentified bot spots to ezist on site All areas of significant contuination must be identified since they represent a potential contact hazard and source of future groundwater contaaination

The upatre and downstreaa surface water sediaents in the dra i nage canal will be saapled to establi sh watersedi8ent quality entering and l eavi ng the site The previous upstreq sa~~ple (SW-2) was too close to First Steet the previous downatreu aa11ple did not account for contination originating fro western oat portion of aite Establishinamp the surfacesediAent quality in the pond will dete~ine i ts potential threat u a contuinant source

Previous surface soil suplinamp i dentified relatively biamph levels of contuiDamption at surface suple location SS-4 Installation of PIW-13A and MV-138 will provide aroundvater data downaradient of SS-4 Honitorinamp well MW-12 will provide aroUDdvater data dovnaradient of SS-7 and east of SS-4 Relatively hiah levels of contaaination were identified in surface soil suples SS-11 and in aroundvater sqplea taken fr011 PIW-8 Installation of KW-11 will provide additional aroundwater data dovnaradieot of SS-11 HW-8 and tile septic tank

Saplina proposed onitorina vella will allow for additional characterization of aroundvater 11 described in Tuk 18A HW-8 will be resupled to account for any chanaea in groundwater quality since the 1984 saplina episodes Water level data for all anitorinamp wells will be collected to evaluate seasonal fluctuation in water levels

Assessent of biota in drainaae canal and adjacent swa11p will establish possible onsite receptors as well as cataloa the terrestrial flora This baseline data will lielp identify possible huaan hazards andor wetland stress

Isolated areas of hiamph surface soil contabullination represent potential sources of aroundwater contamination By establishshying a site-specific leachate potential from a representative sample the relative stability of the current conditions can be estimated

TABLE A~ l (cont )

RATIONALE FOR ADDITIONAL SAHPLINGINVESTIGATIONS

RATIONALE

The liquid-containing vault and tank represent potential sou~cea of groundwater cootination middotThe volues of these containerized liquids bullust be detenlined to aueu their relative hazard

By establiahina OC content for representative naples the adsorption potential of the soil for the contuinants present can be estiaated

585219T 000500

)

NO OF SAMPLING

TASK DESCRIPTION LOCATIONS

6A Surface Soil - Screening plusmn45

tlO bull Sa~aplinamp

17A Surface Water 4 Sedient

19A Groundwa t er - SupliDI 5 - Wat e r Levels 14

Biota t 4 Aasesuent

0 Leachability Stgciiea

Vault Survey

Oraui c Carbon Content

585 219T 00060 0

~

ADDITIONAL SAMPLE DATA

NO OF NO OF SAMPLES SAMPLES SUBHITTED COLLECTED (INCL FOR ANALYSIS (INCL

SAMPLE TYPECRITERIA DUPL amp BLANKS) DUPL amp BLANKS)

50 Screening samples (OVA)

Samples selected fr011 plusmn11 ill OVA screeninamp

Surface water Ulples sed~ot saples

Proposed 110ni t oriog wells All ons i t e onitoring welb

110 Te~~pe rature

Supernatant Raw soil auples

Water levels container d zes (data collected onlite)

Shallow and deep suples collected at each location

TABLE A-3

SUBSURFACE IIIVESTIGATIONS - SPECIFICATIONS

BorinsWell

1111-11

1111-12

1111-IJA

1111-138

Estiuted Depth of Borins

10 0 ft

10 0 ft

20 0 ft

10 0 ft

Well Installation Screened Interval

10 0 - 5 0 ft

10 0 - 5 0 ft

200 - 15 0 ft

100 - 50 ft

5 85 219 000) 0 0

I I

I I

Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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I I TASK

16A

17A

18A

0

19A

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5 85 219T 000400

TABLE A-I

RATIONALE FOR ADDITIONAL SAtPLINGIliVESTIGATIONS

RATIONALE

The 1984 sampling episodes revealed that the majority of the contaaination is in shallow surface soils Additionally contaaination was found to be scattered throughout site increasing the possibility for unidentified bot spots to ezist on site All areas of significant contuination must be identified since they represent a potential contact hazard and source of future groundwater contaaination

The upatre and downstreaa surface water sediaents in the dra i nage canal will be saapled to establi sh watersedi8ent quality entering and l eavi ng the site The previous upstreq sa~~ple (SW-2) was too close to First Steet the previous downatreu aa11ple did not account for contination originating fro western oat portion of aite Establishinamp the surfacesediAent quality in the pond will dete~ine i ts potential threat u a contuinant source

Previous surface soil suplinamp i dentified relatively biamph levels of contuiDamption at surface suple location SS-4 Installation of PIW-13A and MV-138 will provide aroundvater data downaradient of SS-4 Honitorinamp well MW-12 will provide aroUDdvater data dovnaradient of SS-7 and east of SS-4 Relatively hiah levels of contaaination were identified in surface soil suples SS-11 and in aroundvater sqplea taken fr011 PIW-8 Installation of KW-11 will provide additional aroundwater data dovnaradieot of SS-11 HW-8 and tile septic tank

Saplina proposed onitorina vella will allow for additional characterization of aroundvater 11 described in Tuk 18A HW-8 will be resupled to account for any chanaea in groundwater quality since the 1984 saplina episodes Water level data for all anitorinamp wells will be collected to evaluate seasonal fluctuation in water levels

Assessent of biota in drainaae canal and adjacent swa11p will establish possible onsite receptors as well as cataloa the terrestrial flora This baseline data will lielp identify possible huaan hazards andor wetland stress

Isolated areas of hiamph surface soil contabullination represent potential sources of aroundwater contamination By establishshying a site-specific leachate potential from a representative sample the relative stability of the current conditions can be estimated

TABLE A~ l (cont )

RATIONALE FOR ADDITIONAL SAHPLINGINVESTIGATIONS

RATIONALE

The liquid-containing vault and tank represent potential sou~cea of groundwater cootination middotThe volues of these containerized liquids bullust be detenlined to aueu their relative hazard

By establiahina OC content for representative naples the adsorption potential of the soil for the contuinants present can be estiaated

585219T 000500

)

NO OF SAMPLING

TASK DESCRIPTION LOCATIONS

6A Surface Soil - Screening plusmn45

tlO bull Sa~aplinamp

17A Surface Water 4 Sedient

19A Groundwa t er - SupliDI 5 - Wat e r Levels 14

Biota t 4 Aasesuent

0 Leachability Stgciiea

Vault Survey

Oraui c Carbon Content

585 219T 00060 0

~

ADDITIONAL SAMPLE DATA

NO OF NO OF SAMPLES SAMPLES SUBHITTED COLLECTED (INCL FOR ANALYSIS (INCL

SAMPLE TYPECRITERIA DUPL amp BLANKS) DUPL amp BLANKS)

50 Screening samples (OVA)

Samples selected fr011 plusmn11 ill OVA screeninamp

Surface water Ulples sed~ot saples

Proposed 110ni t oriog wells All ons i t e onitoring welb

110 Te~~pe rature

Supernatant Raw soil auples

Water levels container d zes (data collected onlite)

Shallow and deep suples collected at each location

TABLE A-3

SUBSURFACE IIIVESTIGATIONS - SPECIFICATIONS

BorinsWell

1111-11

1111-12

1111-IJA

1111-138

Estiuted Depth of Borins

10 0 ft

10 0 ft

20 0 ft

10 0 ft

Well Installation Screened Interval

10 0 - 5 0 ft

10 0 - 5 0 ft

200 - 15 0 ft

100 - 50 ft

5 85 219 000) 0 0

I I

I I

Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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TABLE A~ l (cont )

RATIONALE FOR ADDITIONAL SAHPLINGINVESTIGATIONS

RATIONALE

The liquid-containing vault and tank represent potential sou~cea of groundwater cootination middotThe volues of these containerized liquids bullust be detenlined to aueu their relative hazard

By establiahina OC content for representative naples the adsorption potential of the soil for the contuinants present can be estiaated

585219T 000500

)

NO OF SAMPLING

TASK DESCRIPTION LOCATIONS

6A Surface Soil - Screening plusmn45

tlO bull Sa~aplinamp

17A Surface Water 4 Sedient

19A Groundwa t er - SupliDI 5 - Wat e r Levels 14

Biota t 4 Aasesuent

0 Leachability Stgciiea

Vault Survey

Oraui c Carbon Content

585 219T 00060 0

~

ADDITIONAL SAMPLE DATA

NO OF NO OF SAMPLES SAMPLES SUBHITTED COLLECTED (INCL FOR ANALYSIS (INCL

SAMPLE TYPECRITERIA DUPL amp BLANKS) DUPL amp BLANKS)

50 Screening samples (OVA)

Samples selected fr011 plusmn11 ill OVA screeninamp

Surface water Ulples sed~ot saples

Proposed 110ni t oriog wells All ons i t e onitoring welb

110 Te~~pe rature

Supernatant Raw soil auples

Water levels container d zes (data collected onlite)

Shallow and deep suples collected at each location

TABLE A-3

SUBSURFACE IIIVESTIGATIONS - SPECIFICATIONS

BorinsWell

1111-11

1111-12

1111-IJA

1111-138

Estiuted Depth of Borins

10 0 ft

10 0 ft

20 0 ft

10 0 ft

Well Installation Screened Interval

10 0 - 5 0 ft

10 0 - 5 0 ft

200 - 15 0 ft

100 - 50 ft

5 85 219 000) 0 0

I I

I I

Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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NO OF SAMPLING

TASK DESCRIPTION LOCATIONS

6A Surface Soil - Screening plusmn45

tlO bull Sa~aplinamp

17A Surface Water 4 Sedient

19A Groundwa t er - SupliDI 5 - Wat e r Levels 14

Biota t 4 Aasesuent

0 Leachability Stgciiea

Vault Survey

Oraui c Carbon Content

585 219T 00060 0

~

ADDITIONAL SAMPLE DATA

NO OF NO OF SAMPLES SAMPLES SUBHITTED COLLECTED (INCL FOR ANALYSIS (INCL

SAMPLE TYPECRITERIA DUPL amp BLANKS) DUPL amp BLANKS)

50 Screening samples (OVA)

Samples selected fr011 plusmn11 ill OVA screeninamp

Surface water Ulples sed~ot saples

Proposed 110ni t oriog wells All ons i t e onitoring welb

110 Te~~pe rature

Supernatant Raw soil auples

Water levels container d zes (data collected onlite)

Shallow and deep suples collected at each location

TABLE A-3

SUBSURFACE IIIVESTIGATIONS - SPECIFICATIONS

BorinsWell

1111-11

1111-12

1111-IJA

1111-138

Estiuted Depth of Borins

10 0 ft

10 0 ft

20 0 ft

10 0 ft

Well Installation Screened Interval

10 0 - 5 0 ft

10 0 - 5 0 ft

200 - 15 0 ft

100 - 50 ft

5 85 219 000) 0 0

I I

I I

Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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TABLE A-3

SUBSURFACE IIIVESTIGATIONS - SPECIFICATIONS

BorinsWell

1111-11

1111-12

1111-IJA

1111-138

Estiuted Depth of Borins

10 0 ft

10 0 ft

20 0 ft

10 0 ft

Well Installation Screened Interval

10 0 - 5 0 ft

10 0 - 5 0 ft

200 - 15 0 ft

100 - 50 ft

5 85 219 000) 0 0

I I

I I

Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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I I

Jill TABLE A-4 ~abull

SUMMARY OF HOURS AND COST BY TASK irrbull Itflfmiddotll ~ HOUlS~ ~ I

16A Surface Soil Screening and S~taplina 132 I 6700 5

17A SurfAce WaterSediment ti I Supling 48 2200 secta

18A Subsurface lnveatig11tion 85 8800 I 19A Groundwater 5-pling 43 1900

bull n I Biota Aaaaubullnt 82 2700 IOQ

27 1000 Leachability Stud

Vault Survey 11 400 II 20 600 I

Oraanic carbon Content j I 0 Japortina 8700

TOTAlS 638 $33 000

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