ltr: transmits support materials for response to comments ... · 116 to 126, and 166 to 186 feet...

POOR LEGIBILITY

ONE OR MORE PAGES IN THIS DOCUMENT ARE DIFFICULT TO READDUE TO THE QUALITY OF THE ORIGINAL

JFUND RECORDS CTR|— _ 1615-01212

L3ENL.ORP 1940 Alabama AvenueP O Box 3530Rancho Cordova CA 95741-3530

916-351-8500

ARQ036

May 20, 1 994 SFUND RECORDS CTR88085072

Ms Katherine L MooreUS EPA H-7-375 Hawthorne StreetSan Francisco, CA 94105

Subject: Support Materials for Response to Comments on the American River EE/CA

Dear Ms. Moore,

Pursuant to your request, enclosed are the support materials for your response to comments onthe American River EE/CA. Included in this submittal are:

• A summary of the aquifer tests performed on the first set of test pumping wells locatedin Sailor Bar Park;

• Chemical contour maps of TCE for the Upper, Middle and Lower aquifers based ondata collected between June and November, 1993, including the new monitor wellslocated in Fair Oaks (Wells 1556-58 and 1559-61);

• As-built diagrams for Wells 1556-58 and 1559-61 ; and

• A summary of the chemical data from Wells 1556-58 and 1559-61 (note that Well 1556is dry, therefore there is no chemical data for that completion).

I believe this is all the information that you have requested. If you need any additional supportmaterials, please do not hesitate to call.

Sincerely,

<ef1k KouklisSenior Hydrogeologist

cc: Bob Yeadon, California Regional Water Quality Control BoardRay Leclerc, California Department of Toxic Substances ControlCindy Caulk, Aerojet

Summary of

Sailor Bar Park Aquifer Testing

October-December, 1993

Sailor Bar Park Aquifer Testing

Background

As recommended in the Engineering Evaluation and Cost Estimate (EE/CA) forthe American River Study Area dated May 1993, one set of three test pumpingwells was installed in Sailor Bar Park, near the northern boundary of the parkand the foot of Kenneth Avenue in Fair Oaks, California. These three wells are

located in a line on nominal 20-foot centers, one well screened in each of thethree aquifers identified in the EE/CA (Upper, Middle, and Lower aquifers) ascontaining chemicals at concentrations requiring remediation. The wells wereinstalled and developed between July and September, 1993. The wells,

numbered 4300, 4301, and 4302, are screened at depth intervals of 76 to 106,116 to 126, and 166 to 186 feet below ground surface, respectively. These

depths correspond to the Upper, Middle and Lower aquifers identified in theEE/CA. The location of these wells and the other wells in the study area are

shown on Figure 1. As-built diagrams of these wells are presented as Figures 2,3, and 4.

Aquifer Testing

Aquifer tests were performed on the three pumping wells to determine their yield,to calculate aquifer parameters including transmissivity, hydraulic conductivity,storage coefficient and leakage factor, and to determine their combined affect on

groundwater flow in the area. The aquifer testing included one-day step-drawdown tests on each of the three wells, a 96-hour constant rate test on eachwell individually, a 48-hour constant rate test on Well 4302, and a 10-dayconstant rate test with all three wells pumping simultaneously.

Step-Drawdown Tests

Step-drawdown tests were performed on Wells 4300, 4301, and 4302 onOctober 28, 26, and 29 1993, respectively. The purpose of the step-drawdowntests was to determine the flow rates for the 96-hour constant rate tests. Threesteps were run for Well 4300 and four steps were run on Wells 4301 and 4302.Each step was approximately two hours duration, with no recovery between the

Figure 1

American River Study Area

Well Location Map

/IcROJcT

DEPTH BORING ft BIS

ror/u. OPTW HELL ft: «eSURFACE £L£VA T10N ft HSL:

TOC ELEVATION tt HSL: 118.95

BOREHOLE DIAMETER: 22"

HELL ID: 4300 foge I at I

SITE: AHEW-T-3

£4Sr« 2216512.3 NORTH' 354859.6

DATE MILLED: 08/16/93

WELLDIAGRAM

E-tJfitL

OHH/M too P DESCRIPTION

\ -j,i*

I

20

40-

eo

80

wo-

120-

140-

160-

180-

200-

220-

240-

260-

0 to »': [SM]: SANDY SILT, dark brown, poorly sorted, poorlyIndurated, angular to subrounded. traces of Rica and gravel

W to 20': [SM/SP]: GRAVELLY SILTY SAND, dark yellowish brown.poorly sorted, angular to rounded up to K)X gravel

20* to 25': (SPY. GRAVELLY SAND, dark brown, moderately sorted.poorly indurated, subangular to rounded. 35-40X gravel

25" to 35': [SMj: SJLTY SANO. dark yellowish brown, moderatelysorted, angular to rounded. 30X soft sPt

35' to 40': ISM/ML]: CLAYEY SILTY SANO. brown, moderately sorted.Moderately Indurated when dry, subangular to rounded, 25X softsNt, trace of clay

40' to 45*: (SP): SANO. very dark brown, moderately sorted, poorlyIndurated, angular to rounded, trace of sKt

45* to 50': ISMJ: SILTY SANO. brown. weN sorted, subangular torounded, wel Indurated clods, 20-2SX slit

50* to 54': [GO: CLAYEY 6RAVEL. brown, extremely poorly sorted.poorly Indurated, angular to subrounded. 30-35X clay

54' to 60': [SMJ: SANDY SILT, brown, poorly sorted, sflty wellIndurated, angular to subrounded, 35-40X sand

60' to 69': (CLJ: GRAVELLY CLAY, brown, extremely poorly sorted.moderately indurated, angular to subrounded. 30-35X gravel

69' to 72': (SM): SILTY SANO. brown, extremely poory sorted, weNIndurated, angular to rounded, 40-45X sUt

72' to 82': [SM]: SILTY SANO, brown, poorly sorted. weH Indurated(when dry), angular to subrounded, SOX silt and fine sand, trace

of mica, grain size Increases with depth82* to 94': [SM]: SANO. brown, poorly sorted. weN indurated, sub-

angular to rounded94' to tOf: [SM): SILTY SANO. brown, poorly sorted, well Indurated,

subangular to rounded, 40X sat, sand decreasing In size withdepth

10f to WO': [SP]: SANO, brown, moderately sorted, extremely weNIndurated, subangular to rounded

106' to US': (SM): SILTY SANO. dark yettowlsh brown, poorly sorted.moderately indurated, subangular to rounded, trace of mica

115' to 120': tGCl CLAYEY GRAVEL, brown, poorly sorted, poorlyIndurated, subangular to we* rounded. 30-40X clay, clay increas-es with depth, trace of mica

Bottom of boring at 12L5'

FIGURE 2

/IcROJ

TOTAL DEPTH BORING ft: 136

TOTAL DEPTH HELL ft: 142

SURFACE ELEVA TION ft HSU

TOCELEVATION ft HSL W9.22

BOREHOLE DIAMETER: 22 Inches

HELL ID: 4301 ftoe I of I

SITE: AREW-T-2

EAST' 2216482.3 NORTH- 354856.7

DATE DRILLED: 08/26/93

WELLDIAGRAM DESCRIPTION

0 to 6': [ML]: SILT, very dark grayish brown, well sorted, weN .__Indurated, very soft, subangular to subrounded, trace of Mica,trace of clay

5 to «0': [GMt SILTY GRAVEL, dark brown, poorly sorted, poorlyIndurated, very loose, angular to rounded. IOX gravel

W to IS': [SPt GRAVELLY SAND, dark brown, moderately to wen sort-ed, poorly Indurated, loose, angular to rounded, tOX gravel

15' to 35': [GWt SILTY GRAVEL, dark brown, poorly sorted, poorlyIndurated, very loose, angular to rounded, IO-15X silt

35' to 35': [SPJ: FINE SANO MITH GRAVEL, very dark grayish brown, wellsorted, moderately Indurated, soft angular to rounded, gravel <5X

45* to SO': [SPl: SAND, black, well sorted, poorly Indurated, loose,subangular to angular

60' to 65': (CLt GRAVELLY CLAY, dark grayish brown to very darkgrayish brown, moving downhote, poorly sorted, well Indurated,soft, angular to subrounded, 35-40X gravel

65' to 68': (GMk GRAVELLY SILT, brown, poorly sorted, moderatelyIndurated, soft, angular to rounded, 35-40X gravel

60' to 72': ISPh SANO. black, moderately sorted, moderately Indurat-ed, subangular to well rounded

72' to 80': [SCI: brown, poorly sorted, moderately Indurated, angularto subrounded. 30-35X sand, trace of mica

80* to 82': [GO: CLAYEY GRAVEL, brown, poorly sorted, moderatelyindurated, angular to subrounded, 40-45X clay, trace of mica

82* to 95': (GWl SANDY GRAVEL, very dark gray, poorly sorted, poorlyIndurated, angular to rounded. 40-4SX sand

95' to 100': (CLJ: SANDY CLAY, brown, poorly sorted, moderatelyindurated, subangular to well rounded. 40-45X sand

100* to K>8': (SCJ: CLAYEY SANO. brown, poorly sorted, well Indurat-ed, subangular to rounded, 3S-40X clay

W6' to 115': (CLl SANDY CLAY, brown, poorly sorted, moderatelyIndurated, subangular to rounded, 30X sand

115' to (27': (SWJ: GRAVELLY SANO. black, poorly sorted, poorlyIndurated, subangular to rounded, I5-20X gravel

127* to 134': [CLJ: SANDY CLAY, brown, poorly sorted, moderatelyIndurated, angular to subrounded, 15-20X sand

134' to 142': (SC): CLAYEY SANO. brown, moderately sorted, moderatelyIndurated, angular to subrounded, 35-40X clay

Bottom of boring at 142'

FIGURE 3


TOTAL DEPTH MELL ft: 100

SURFACE ELEVA T10N ft HSU

TOC ELEVATION ft HSU 118.26

BOREHOLE DIAMETER: 22 inches

HELL ID: 4302 Page I of I

SITE: AREW-T-4

EAST" 22»473.5 NORTH- 354853.5

DATE DRILLED: 08/00/03

WELLDIAGRAM DESCRIPTION

0 to S': [Mil SILT, very dark grayish brown, well sortea Mell —Indurated, soft, subangular to subrounded, trace of mica, trace ofclay

5* to 25': ISW): GRAVELLY SAND, dark brown, poorly sorted, poorlyIndurated, loose when dry. angular to subrounded, 5-tOX gravel,gravel increases with depth, 30-35X at 25' bgs

25* to 30': (SP): SAND, dark brown, well sorted, poorly Indurated.loose, subangular to rounded

30' to 60': JGM): GRAVELLY SILT, brown, poorly sorted. Moderatelyto well Indurated, angular to subrounded, 10X gravel

50' to 54': (GC): CLAYEY GRAVEL, brown, extremely poorly sorted.poorly Indurated, angular to subrounded. 30-35X clay

54' to er: [SMt SANDY SILT, brown, poorly sorted, silt well Inurat-ed, angular to surbounded, 34-40X sand

61' to 80': [CLk GRAVELLY CLAY, brown, extremely poorly sorted.moderately Indurated, angular to subrounded, 30-35X gravel

80' to 04': (SM): SANO, brown, poorly sorted, well indurated, sub-angular to rounded

04' to Kir: ISM): S1LTY SANO, brown, poorly sorted, well Indurated,subangular to rounded, 40X sHt, sand decreasing in size withdepth

Kir to K>6': ISPJ: SANO. brown, moderately sorted, extremely wellindurated, subangular to rounded

tOO' to US': [SMt SILTY SANO, dark yellowish brown, poorly sorted,moderately indurated, subangular to rounded, trace of mica

115* to 128': IGW): SANDY GRAVEL, brown, poorly sorted, (sand) wellIndurated, angular to subroundcd, trace of mica, gravel Increas-es with depth

128' to 134': (ML): SILT, brown, welt sorted, moderately indurated.subangular to rounded, soft

134' to MO': [SM]: GRAVELLY SANO. brown, poorly sorted, moderatelyIndurated, subangular to rounded, tO-ISX gravel

140' to tSO': [SM]: SILTY SANO, brown, moderately sorted, welindurated, angular to rounded. 35-40X sit

ISO* to 156': iSMt GRAVELLY SILTY SANO. (sat) pinkish gray, (sand)brown, poorly sorted, wen indurated, subangular to rounded, tOXgravel, sNt In wed Indurated chips

158' to 162': [ML]: SANOY SILT, (sand) brown, (silt) pinkish gray,poorly sorted, wen Indurated, angular to subrounded, trace ofgravel, sand I5-20X Increasing with depth

162' to «r: [SMJ: SILTY SANO, (sHt) pinkish gray, (sand) brown,poorly sorted, wel indurated, angular to subrounded. silt inweN indurated chips decreasing with depth

tar to 185': (ML]: SILT, dark gray, welt sorted, moderately indurat-ed, angular to subrounded

185' to 180': ISM]: GRAVELLY SILTY SANO. brown, poorly sorted.moderately Indurated, subangular to rounded. X)X gravel, 10-I5Xsat

100* to 200': [SM]: SILTY SANO, gray, moderately sorted, wellindurated, subangular to rounded, 35-40X silt decreasing withdepth

Bottom of boring at 200*

FIGURE 4

steps. The last step in each test was run at a rate that would maximize availabledrawdown in each well, or, in the case of Well 4301, the last step was run at themaximum capacity of the pump. Table 1 summarizes the results of the step-drawdown tests. The flow rates, drawdowns, and specific capacities are shown

for each test. In each case, the specific capacity remained relatively constantthroughout the test, indicating that the wells could be pumped near theirmaximum capacity during the 96-hour constant rate tests.

Constant Rate Tests

Four single well aquifer tests and one multiple well aquifer test were performedon the three test wells. During the constant rate tests the three pumping wells

and 57 monitoring well completions were equipped with pressure transducersand data loggers to measure and record changes in water levels. In addition,the remaining monitor wells in the study area were measured by handperiodically during each test. Barometric pressure was recorded on an hourly

basis using a pressure transducer and data logger throughout the duration of theaquifer testing.

Single Well Tests - Single well aquifer tests were performed on Wells 4300,

4301, and 4302 between November 1 and November 24, 1993. One 96-hourtest was performed on each well and an additional 48-hour test was performedon Well 4302. The second test on Well 4302 was conducted because a watersupply well located in Sailor Bar Park started pumping unexpectedly during the96-hour test, causing drawdown to occur in several of the wells being monitored.

The purpose of the single well tests was to collect data that would provide forcalculation of aquifer parameters. The aquifer tests were analyzed using theGraphical Well Analysis Package (GWAP) computer program. The Hantushmethod for leaky confined aquifers was used to analyze the test data. Table 2summarizes the results of the single well tests. The flow rates, drawdown inmonitor wells, aquifer thicknesses, and the calculated aquifer parameters are

shown for each test.

Multiple Well Test - The multiple well test was performed between November

19 and December 9, 1993. Wells 4300, 4301, and 4302 were pumped at rates

Table 1

American River Study AreaSummary of Step-Drawdown TestsSailor Bar Park Aquifer Tests-1993

Well Number

4300

4301

4302

Flow Rate(Qpm)74.0192.7288.367.1133.3202.5229.416.527.235.040.1

Drawdown(feet)3.58.213.113.425.341.146.440.769.390.5107.7

Specific Capacity(flpmffl)

21.123.522.05.05.34.94.90.410.390.390.37

Table 2

American River Study AreaSummary of Sailor Bar Park Aquifer Test Results

PumpedWell4300

(Upper Aquifer)4301

(Middle Aquifer)

4302(Lower Aquifer)

4302(Lower Aquifer)

TestDate

11/8-12/93(98 hrs.)

11/15-19/93(98 hrs.)

11/1-5/93(98hrs.)

11/22-24/93(48 hrs.)

Qfapm)308.8

218.3

35.0

35.3

Obs. Wensfor Analysis1395 DO1395 Rec1396 DD1396 Rec1539DD1539 Rec1397 DD1397 Rec1540 DD1540 Rec1397 DD1397 Rec1533DD1533 Rec1540DD1540 Rec

r(feet)157.7157.7177.6177.6593.4593.4139.0139.0581.0581.0139.0139.0

1,342.71,342.7581.0581.0

S(feet)2.7

3.3

0.7

6.7

0.6

6.9

0.4

0.6

b(feet)31.531.515.515.515.515.523.023.023.023.023.023.023.023.023.023.0

T(n*2/day)10,834.820.645.63,501.13,267.211.862.88,397.8

93.283.0548.5548.5105.480.0

1,210.31,455.8579.4470.8

S

9.8E-059.0E-051.3E-041.2E-042.7E-042.5E-041.9E-041.8E-043.1E-042.5E-042.0E-041.7E-043.8E-043.0E-042.9E-042.7E-04

K(ft/day)344.0655.4225.9210.8765.3541.84.13.6

23.823.84.63.552.663.325.220.5

L(feet)394.2788.5592.0592.0741.7593.4173.8154.4387.3387.3198.6154.4

1.491.91,342.7387.3387.3

Type Curve(r/B)0.40.20.30.30.81.00.80.91.51.50.70.90.91.01.51.5

b1

(feet)14.014.013.813.813.813.832.032.032.032.032.032.032.032.032.032.0

KV(ft/day)0.980.460.140.130.320.360.090.100.040.110.080.100.020.020.020.09

Notes: r = distance from pumped wells = maximum drawdown measured during testb = aquifer thicknessT = aquifer transmissivityS = aquifer storage coefficientK = aquifer hydraulic conductivityL = Leakage Factor (r/(r/B)Jb' = overlying aquitard thicknessKv1 = overlying aquitard vertical hyd. cond.

of 224, 197, and 34 gallons per minute (gpm), respectively for a total flow rate of455 gpm. Water levels in all study area monitor wells were measured prior to

the start of the test and at least once daily throughout the duration of the test.These data were used to construct groundwater elevation contour maps showingpumping and non-pumping conditions for each aquifer. These maps arepresented on Figures 5, 6, and 7,. The data collected with the pressure

transducers and data loggers during the ten-day test was also used to helpcalibrate the computer model prepared by CH2MHill as part of this project.

Figure 5Sailor Bar Park 10-Day Aquifer Test

Groundwater Elevation Contour Maps (feet)

Pre-Pumping ConditionsUpper Aquifer -11/28/93

Pumping ConditionsUpper Aquifer-12/9/93

Figure 6Sailor Bar Park 10-Day Aquifer Tost

Groundwater Elevation Contour Maps (feet)1SS7

4-38.33

Pre-Pumping ConditionsMiddle Aquifer -11/29/93

Pumping ConditionsMiddle Aquifer-12/9/93

Figure 7Sailor Bar Park 10-Day Aquifer Test

Groundwater Elevation Contour Maps (feet)

Pre-Pumping ConditionsLower Aquifer -11/29/93

Pumping ConditionsLower Aquifer-12/9/93

Chemical Concentration

Contour Maps for TCE

June-November, 1993


TCE in Croundwater (ug/l)

Upper Aquifer

June - November 1993

Scale m FeetKKK) MOO


TCE in Groundwater (ug/l)

Middle Aquifer

June - November 1993

Avojrt PraptbbnDMtHn


TCE in Groundwater (ug/I)

Lower Aquifer

Jun« - November 1993

As-Built Diagrams

Wells 1556-58 and 1559-61

GJBMj CSR


IEJORF3 TOTAL DEPTH HELL ft: 202,250.187 fltLL IUI lt)DD~00 Page 1 of 2

If"") I BT" SURFACE ELEVATION ft MSL: SITE: AR83-CG1

PROPULSION DIVISION TOC ELEVATION ft MSL: 183.30 EAST- 2213606.6 NORTH- 358370.0

ENVIRONMENTAL OPERATIONS BOREHOLE DIAME TER: 10.6 DATE DRILLED: 10/20/83

WELLDIAGRAM

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DESCRIPTION

0 to 1': [AC]: 3/12" Asphalt with 5" aggregate base1' to 11': [SM]: Sllty sand, dark gray, dry to moist with some fine

to medium gravel11' to 15': (CLl: Sandy clay, dark gray, moderate to high plastic,

moist, stiff15' to 18': (SMI: Silty fine sand, brown, moist, dense18' to 23': [ML]: Sandy silt, yellow brown, moist, medium dense23' to 27': [SC]: Clayey sand, light red brown, medium-grained,

medium dense27' to 44': [SM]: Sllty fine sand, light red brown, medium dense

44' to 60': [CL]: Sandy clay, light brown, moderately plastic, sand1 fine-grained, grades to sllty clay, gray-brown to brown with

fine sand Interbeds60' to 64': [SP]: Sand, Dght brown and white, medium to coarse-

grained, subrounded to subangular64' to 68': [CL): Silty clay, light brown, moderately to high

plasticity68* to 81': [SP]: Sand, light brown, variegated, moderately cemented,

medium to coarse, quartz common81' to 84': [ML]: Silt with some fine sand, light brown84' to 105': [SP]: Sand, medium to coarse, darkly variegated, mafic

with common quartz, some fine gravel, moderately cemented withsilty fine sand Interbeds

105' to 117': (CL): Sllty clay, gray, highly plastic, medium stiff117* to 124': [ML]: Sfltstone, brown, well cemented with interbedded

clayey silt, soft124' to 138': [SP/SMj: Sand with some silt, darkly variegated,

medium-grained with well cemented, fine-grained interbeds, gradesnot silt

138' to 142': (ML]: Clayey silt, light brown to brown, soft142' to 158': [SM]: SHty sand, brown, moderately cemented, fine-

grained grades slightly cemented, choclate brown

ISO* to 162': [ML]: Silt with some fine sand, light brown, slightto moderately cemented

162' to 171": (SM): Silty fine sand, dark brown, poorly cemented171' to 174': [SP]: Fine to medium sand, dark brown, moderately to

well cemented174* to 182': (ML]: Fine sandy silt, light brown to brown with minor

siltstone lenses182' to 202': [SP]: Sand, dark brown, slight to moderately cemented,

fine to medium-grained

202* to 230': [ML]: Fine sandy silt, light brown with trace to someclay, soft

230' to 266': [GP]: Gravel, gray brown, variegated, well sorted,medium to coarse, loose

HELL ID: 1556-58 Pege 2 of 2

PROPULSION DIVISIONENVIRONMENTAL OPERATIONS

NELLDIAGRAM

E-LOi

OHM/Bl )50DESCRIPTION

278'261'264'

202'206'300'

260

280

300'

320-

340-

360-

380-

400-

420-

440-

460-

480-

500-

520-

266' to 280': [CL/MLl: Clay/silt mixture, light brown, soft

280' to 288': [SM]: Silty fine sand, brown, moderately cemented

288' to 300': tCL]: Silty clay, light brown to dark green/gray,plastic

Bottom of boring at 300 feet

GBN^0S9

TOTAL DEP TH BORING ft: 302

LJLJRf3 TOTAL DEPTH HELL ft: 283,247,204 NtlLL 1U' lOD^'Ol Page lot 2

f— 1 |^_ i SURFACE ELEVATION ft HSL: SITE: AR03-GV1

PROPULSION nivisiON TOC ELEVATION ft HSL 106.15 EAST* 2213808.4 NOR TH~ 356606.4

ENVIRONMENTAL OPERATIONS BOREHOLE DIANE TER: 10.6" DATE DRILLED: 10/30/03

WELLDIAGRAM

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DESCRIPTION

0 to 4': (SMI: Silty fine sand, brown, moist, medium dense -

4' to 8': [ML]: Clayey silt, light red-brown, moist, dense

6* to 22': ISC}: clayey fine sand with trace of gravel to 1",coarsens to fine to medium-grained, mica common, quartz common,(decomposed granite)

22' to 32': [GPj: Mafic Gravel with medium sand, gray, moist to wet,quartz common, some mica

32' to 74': [CD: Sandy clay, light brown, moderately plastic, stiff,becomes more cemented, some sandstone pieces

74' to 83': [ML]: Fine sandy silt, light brown, moderately cemented

83' to 87': ICL]: Clayey silt, gray/brown, slightly plastic, soft

87' to 104': [SP]: Sand, medium to coarse-grained, darkly variegated,quartz common, moderately cemented

104* to 117': [GP]: Sandy gravel, darkly variegated, quartz common,fine gravel, medium to coarse sand

117' to 123': [CL]: Sllty clay, gray/brown, moderately to highplasticity, medium to stiff

123' to 126': [ML]: Slltstone. light brown with some fine sand128' to 148': (ML]: Silt with some medium-grained sand, brown, dense

interbedded high and low cement

148' to 158': [SM]: Silty fine sandstone, dark brown, moderately towen cemented

158' to 167': [ML]: Silt, light brown to tan, soft to medium, stiff

167* to 176': [SM]: Fine sand/siltstone. light brown to tan.moderately cemented

176' to 210': [GP/SP]: Coarse sandy gravel, darkly variegated, poorlysorted, loose

210' to 210': [SP]: Fine sandstone, black, moderately cemented

218' to 226': [ML/SM]: Siltstone/fine sandstone, light brown to tan,moderately cemented

226* to 234': (SP): Sandstone, darky variegated, well cemented234' to 238': [ML]: Siltstone. light brown, cemented/soft interbedded

238' to 250': (SP): Sandstone, black, mafic, well cemented, angular,no quartz

250' to 264': [ML/CL]: Clayey silt. Hght brown, soft, moderatelyhighly plastic

OENCDRR>ieROJErr

PROPULSION DIVISIONENVIRONMENTAL OPERATIONS

HELLDIAGRAM

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0 OHM/m 350

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M260-

280-

300-

320-

340-

360-

380-

400-

420-

440-

460-

480-

500-

520-

S»'•s

r-IZ-

i

//E^//7: 1559-61 ^,rf,

DESCRIPTION

264* to 283': (SM): Sllty fine iand, light brown to brown, moderatelycemented, well cemented Jlltstone stringers

283' to 208': (ML]: Silt, light brown to tan. soft to medium stiff

208' to 303': (CL/CH]: Silt, light brown to tan. soft to mediumstiff, medium to high plasticity

Bottom of boring at 302 feet

Chemical Data

Wells 1556-58 and 1559-61

Page: 1

Well: 1557 06-1 (OAKGLEN)

VOLATILE ORGAN I CS

1,1.1-TRICHLOROETHANE1 , 1 ,2,2-TETRACHLOROETHANE1,1,2-TRlCHLOROETHANE1,1-DICHLOROETHANE1,1-DICHLOROETHYLENE1,2-DICHLOROETHANE1,2-DICHLOROPROPANE2-BUTANONE (MEK)2-CHLOROETHYL VINYL ETHER2-HEXANONE4-METHYL-2-PENTANONE (MIBK)ACETONEBENZENEBROMOO I CHLOROMETHANEBROMOFORMBROMOMETHANECARBON DISULFIDECARBON TETRACHLORIDECHLOROBENZENECHLOROETHANECHLOROFORMCHLOROMETHANECIS-1,3-DICHLOROPROPYLENECIS/TRANS- 1 ,2-DICHLOROETHYLENEDIBROMOCHLOROMETHANEDICHLORODIFLUOROMETHANED I CHLOROMETHANEETHYLBENZENEFREON 113T - 1 , 3-D I CHLOROPROPYLENETETRACHLOROETHYLENETOLUENETRICHLOROETHYLENETR I CHLOROFLUOROMETHANEVINYL ACETATEVINYL CHLORIDEXYLENES (TOTAL)

Well Type: MC

Sample Date:Time:

Sample Type:Lab:

(Units)

( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( PPB )( PPB )( PPB )( PPB )( PPB )( PPB )( UG/L )( UG/L )( PPB )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )( PPB )( UG/L )( UG/L )( UG/L )( UG/L )( PPB )( UG/L )( PPB )( UG/L )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )

11/05/9312:39

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMNM

< 0.5< 0.5

NMNM

< 0.5< 0.5

NM< 0.5

NMNM

< 0.5< 0.5< 0.5< 0.5

NM< 0.5

NM< 0.5

NM< 0.5< 0.5

NM< 0.5

NM

AEROJET Environmental Operations May 16. 1994Water Quality Information

Zone: 1 Sector: D GSE: TOC: TOP: 234.5 BOP: 250.5 TD: 250.5

11/22/9312:20

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMNM

< 0.5< 0.5

NMNM

< 0.5< 0.5

HM< 0.5

NMNM

< 0.5< 0.5< 0.5< 0.5

NM< 0.5

NM< 0.5

NM< 0.5< 0.5

NM< 0.5

NM

12/13/9315:57

EL

< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 20.•c 10.< 20.< 10.< 20.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 10.< 10.< 5.

02/16/9410:02

EL

<<<<<<< 1.

NMNMNMNMKMNM

< 1.< 2.

NMNM

< 1.< 1.

NM< 1.

NMNM

< 1.< 1.< 1.< 1.

NM< 1.

NM< 1.

NM< 1.< 1.

NM< 1.

NM

Page: 1

Well: 1558 06-1 (OAKGLEN)

VOLATILE ORGANICS

1, ,1-TRICHLOROETHANE1, ,2,2-TETRACHLOROETHANE1, ,2-TRICHlOROETHANE1, -DICHLOROETHANE1, -DICHLOROETHYLENE1,2-DICHLOROETHANE1,2-DICHLOROPROPANE2-BUTANONE (MEK)2-CHLOROETHYL VINYL ETHER2-HEXANONE4-METHYL-2-PENTANONE (MIBK)ACETONEBENZENEBROMOO I CHLOROMETHANEBROMOFORMBROMOMETHANECARBON DISULFIDECARBON TETRACHLORIDECHLOROBENZENECHLOROETHANECHLOROFORMCHLOROMETHANECIS-1 ,3-DICHLOROPROPYLENECIS/TRANS-1 ,2-DICHLOROETHYLENEDIBROMOCRLORONETHANEOTCHLORODI FLUOROMETHANED I CHLOROMETHANEETHYLBENZENEFREON 113T-1 ,3-DICHLOROPROPYLENETETRACHLOROETHYLENETOLUENETRICHLOROETHYLENETRICHLOROFLUOROMETHANEVINYL ACETATEVINYL CHLORIDEXYLENES (TOTAL)

Well Type: MC

Sample Date:Time:

Sample Type:Lab:

(Units)

( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UC/L )( UG/L )( PPB )( PPB )< PPB )( PPB )( PPB )( PPB )( UG/L )( UG/L )( PPB )( PPB )( UG/L )< UG/L )( PPB )( UG/L )( PPB )( PPB >( UG/L )( UG/L )( UG/L )( UG/L )( PPB )< UG/L )( PPB >( UG/L )( PPB )( UG/L )( UG/L )( PPB )< UG/L )( PPB )

11/05/9313:54

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMNM

< 0.5< 0.5

NMNM

< 0.5< 0.5

NM< 0.5

NMNM

< 0.5< 0.5•c 0.5< 0.5

NM< 0.5

NM< 0.5

NM< 0.5< 0.5

NM< 0.5

NM

AEROJET Environmental Operations May 16, 1994Water Quality Information

Zone: 1 Sector: D GSE: TOC: TOP: 284 BOP: 297 TD: 292

11/22/9311:20

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMNM

< 0.5< 0.5

NMNM

< 0.5< 0.5

NM< 0.5

NMNM

< 0.5< 0.5< 0.5< 0.5

NM< 0.5

NM< 0.5

NM< 0.5< 0.5

NM< 0.5

NM

12/13/9315:15

EL

< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 20.< 10.< 20.< 10.< 20.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 10.< 10.< 5.

02/16/9409:12

EL

< 1.< 1.< 1.< 1.< 1.< 1.< 1.

NMNMNMNMNMNM

< 1.< 2.

NMNM

< 1.< 1.

NM< 1.

NMNM

< 1.< 1.< 1.< 1.

NM< 1.

NM< 1.

NM< 1.< 1.

NM< 1.

NM

Page: 1

Well: 1559 AMERICAN RIVER NEIGHBORD WELL Well Type: MC

VOLATILE ORGAN I CS

1,1.1-TRlCHLOROETHANE1 , 1 ,2,2-TETRACHLOROETHANE1 , 1 ,2-TRICHLOROETHANE1,1-OICHLOROETHANE1,1-DICHLOROETHYLENE1,2-DICHLOROETHANE1,2-DICHLOROPROPANE2-BUTANONE (MEIC)2-CHLOROETHYL VINYL ETHER2-HEXANONE4-METHYL-2-PENTANONE (MIBK)ACETONEBENZENEBROM001 CHLOROMETHANEBROMOFORMBROMOMETHANECARBON DISULFIDECARBON TETRACHLORIDECHLOROBENZENECHLOROETHANECHLOROFORMCHLOROMETHANECIS-1 ,3-DICHLOROPROPYLENECIS/TRANS-1 ,2-OICHLOROETHYLENEDIBROMOCHLOROMETHANED I CHLOROD I FLUOROMETHANED I CHLOROMETHANEETHYLBEMZENEFREON 113T - 1 . 3 -0 1 CTLOROPROPYLENETETRACHLOROETHYLENETOLUENETRICHLOROETHYLENETR I CHLOROFLUOROMETHANEVINYL ACETATEVINYL CHLORIDEXYLENES (TOTAL)

Sample Date:Time:

Sample Type:Lab:

(Units)

( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( PPB )( PPB )( PPB )( PPB )( PPB )( PPB )( UG/L )( UG/L )( PPB )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )( PPB )( UG/L )( UG/L )( UG/L >( UG/L )( PPB )( UG/L )( PPB )( UG/L )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )

11/22/9314:35

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMNM

< 0.5< 0.5

NMNM

< 0.5< 0.5

NM< 0.5

NMHM

< 0.5< 0.5< 0.5< 0.5

NM< 0.5

NM< 0.5

NH< 0.5< 0.5

NM< 0.5

NM


Zone: 1 Sector: D GSE: TOC: TOP: 186 BOP: 204 TO: 204

12/13/9312:57

EL

< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 20.

10.20.10.20.5.5.

< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 10.< 10.< 5.

02/15/9413:17

EL

< 1.< 1.< 1.< 1.< 1.< 1.< 1.

NMNMNMNMNMNM

< 1.< 2.

NMNM

< 1.< 1.

NM< 1.

NMNM

< 1.< 1.< 1.< 1.

NM< 1.

NM< 1.

NM< 1.< 1.

NM< 1.

NM

Page: 1


VOLATILE ORGAN I CS

, ,1-TRICHLOROETHANE, ,2,2-TETRACHLOROETHANE, ,2-TRICHlOROETHANE, -DICHLOROETHANE, -DICHLOROETHYLENE,2-DICHLOROETHANE,2-DICHLOROPROPANE

2-BUTANONE (MEK)2-CHLOROETHYL VINYL ETHER2-HEXANONE4-METHYL-2-PENTANONE (MIBK)ACETONEBENZENEBROMOO I CHLOROMET HANEBROMOFORMBROMOMETHANECARBON DISULFIDECARBON TETRACHLORIDECHLOROBENZENECHLOROETHANECHLOROFORMCHLOROMETHANECIS-1,3-DICHLOROPROPYLENECIS/TRANS'1 ,2-DICHLOROETHYLENED I BROMOCHLOROMETHANED ICHLOROD I FLUOROMETHANEDICHLOROMETHANEETHYLBENZENEFREON 113T-1 ,3-DICHLOROPROPYLENETETRACHLOROETHYLENETOLUENETRICHLOROETHYLENETRICHLOROFLUOROMETHANEVINYL ACETATEVINYL CHLORIDEXYLENES (TOTAL)

Sample Date:Time:

Sample Type:Lab:

(Units)

( UG/L )< UG/L )< UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( PPB )( PPB )( PPB )( PPB )< PPB )< PPB )< UG/L >< UG/L )( PPB )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )( PPB )( UG/L )( UG/L )< UG/L )( UG/L )PPB )UG/L )PPB )UG/L )PPB )UG/L )UG/L )PPB )UG/L )( PPB )

11/22/9313:20

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMNM

< 0.5< 0.5

NMNM

< 0.5< 0.5

NM< 0.5

NMNM

< 0.5< 0.5< 0.5< 0.5

NM< 0.5

NM< 0.5

NM< 0.5< 0.5

NM< 0.5

NM



12/13/9311:45

EL

< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 20.< 10.< 20.< 10.< 20.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 10.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 10.< 10.< 5.

02/15/9412:36

EL

<<<<<<<

NMNMNMNMNMNM

< 1.< 2.

NMNM

< 1.< 1.

NM< 1.

NMNM

< 1.< 1.< 1.< 1.

NM< 1.

NM< 1.

NM< 1.< 1.

NM< 1.

NM

Page: 1


VOLATILE ORGANICS

1 ,1-TRICHLOROETHANE,2,2-TETRACHLOROETHANE,2-TRICHLOROETHANE-DICHLOROETHANE-DICHLOROETHYLENE

2-DICHLOROETHANE2-DICHLOROPROPANE

2-BUTANONE (MEK)2-CHLOROETHYL VINYL ETHER2-HEXANONE4-METHYL-2-PENTANONE (MIBK)ACETONEBENZENEBROMOD I CHLOROMETHANEBROMOFORMBROMOMETHANECARBON DISULFIDECARBON TETRACHLORIDECHLOROBENZENECHLOROETHANECHLOROFORMCHLOROMETHANEC I S - 1 ,3-D I CHLOROPROPYLENECIS/TRANS- 1,2-DICHLOROETHYLENED I BROMOCHLOROWET H ANED I CHLOROD I FLUOROMETHANED I CHLOROMETHANEETHYLBENZENEFREON 113T-1 ,3-DICHLOROPROPYLENETETRACHLOROETHYLENETOLUENETRICHLOROETHYLENETRICHLOROFLUOROMETHANEVINYL ACETATEVINYL CHLORIDEXYLENES (TOTAL)

Sample Date:Time:

Sample Type:Lab:

(Units)

( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( UG/L )( PPB >( PPB )( PPB >( PPB )( PPB )( PPB )( UG/L )( UG/L )( PPB )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )C PPB )( UG/L >( UG/L )( UG/L )( UG/L )( PPB )( UG/L >( PPB )( UG/L )( PPB )( UG/L )( UG/L )( PPB )( UG/L )( PPB )

11/22/9310:15

EL

< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5< 0.5

NMNMNMNMNMHM

< 0.5< 0.5

NMNM

< 0.5< 0.5

NM< 0.5

NMNM

< 0.5< 0.5< 0.5< 0.5

NM< 0.5

NM< 0.5

NM< 0.5< 0.5

NM< 0.5

NM



12/13/9310:11

EL

< 5.< 5.« 5.< 5.< 5.< 5.< 5.< 20.< 10.< 20.< 10.< 20.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 10.•c 5.< 10.< 5.< 5.< 5.< 10.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 5.< 10.< 10.< 5.

02/15/9411:07

EL

<<<<<<<

NMNMNMNMNMNM

< 1.< 2.

NMNM

< 1.< 1.

NM< 1.

NMNM

< 1.< 1.< 1.< 1.

NM< 1.

NM< 1.

NM< 1.< 1.

NM< 1.

NM

ltr: transmits support materials for response to comments ... · 116 to 126, and 166 to 186 feet...

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