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FLUOR DANIEL GTI
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FLUOR DANIEL GTI '
, ,
, -
BASELINE SOIL SAMPLING RI;PORT
CHEVRONf=ACILlTY 9-4416
3699 WILSON ROAD
BAKERSFIELD, CALIFORNIA
Fluor Daniel GTI
Written/Submitted By:
~;: ~/t7<J
Kevin L. Hamilton, REA
Lead Geologist
October 22, 1997
Prepared for:
Mr. Eric Roehl
Chevron Products Company
Post Office Box 2833
La Habra, California 90632-2833
(562) 694-7868
,5080 California Avenue / Suite 300 / Bakersfield, CA 93309 USA (805) 328-3083 FAX (805) 328-3081
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TABLE OF CONTENTS
Page
1.0 INTRODUCTION .....................................:............................... 1
2.0 BACKGROUND ......................:.....,........................................ 1
3.0 GEOLOGYIHYDROGEOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1
4.0 ASSESSMENT PROCEDURES ........................................................ 2
5.0 SOIL SAMPLE ANAL YTICAL RESULTS ................................................. 2
6.0 Sl,.)MMARY AND CONCLUSIONS ...................................................... 2
7.0 REFERENCES . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . .. 4
TABLES
Table 1. Former UST information summary.
Table 2. Analytical results Qn mg/kg) of soil samples-September 1994 UST removal.
Table 3. Current UST information summary.
Table 4. Analytical results Qn mg/kg) of soil samples-October 1997 Baseline soil assessment.
FIGURES
Figure 1. Site Location Map
Figure 2. Site Map
Figure 3. TPHG In Soil; September 1994 UST Removal
Figure 4. Benzene In Soil; September 1994 UST Removal
APPENDICES
APPENDIX A. ,DRILLING LOGS
APPENDIX B. METHODOLOGY
B.1 Soil Borings. . . . . . . . . " . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. B1
8.2 Soil Sampling ......:....................................................... B1
B.3 Laboratory Analysis ......................................................... B1
B.4 Waste Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. B2
APPENDIX C. LABORATORY REPORTS
FLUOR, DANIEL GTI ~
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Soil Assessment Report
Chevron Facility No. 9-4416
Page 1
October 22, 1997
1.0 INTRODUCTION'
Fluor Daniel GTI has been contracted by Chevron Products Company to conduct a soil assessment at their
facility no. 9-4416. The site is located at 3699 Wilson Road in Bakersfield, California (Figures 1 and 2).
The purpose of the assessment is to establish a soil baseline prior to property transfer. This report presents
site background, assessment procedures, sampling protocol, and findings ofthe assessment.
2.0 BACKGROUND
Three fiberglass gasoline tanks and one steel used-oil tank were installed in 1978 and a used-oil tank was
installed in 1971. These tanks were excavated and removed on September 29, 1994 (Figure 3 and 4).
Tank information is summarized in Table 1.
Following tank removal, samples were collected at depths of 2, 6 and, in one case, 8 feet beneath the
former tanks, dispensers, and/or product piping to determine if hydrocarbons were present. The samples
collected from facilities associated with storing or dispensing of gasoline were analyzed for BTEX and
TPHG. The usèd-oil UST excavation samples were analyzed for TRPH.
.
Gasoline hydrocarbons were only detected in two areas (Figure 3). Detected concentrations of TPHG in
the 2- and 6-foot samples beneath the east end of tank no. 2 were 4,760 and 91.1 mglkg, respectively;
, ,
detected concentrations of benzene were 13.1 and 0.015 mglkg, respectively. A sample collected from a
depth of 8 feet beneath the east end of tank 2 contained no detectable hydrocarbons. The sample
collected along the piping (P2-2) contained benzene at a concentration of 0.015 mglkg (Figure 4). Most of
the sediments represented by the 2- and 6-foot samples at the end of tank 2 were removed to allow for the
installation of larger tanks.
Detected concentrations of TRPt:\ from the samples collected from the used-oil tank excavation range from
11.7 to 35.2 mglkg (Figure 3). The highest concentrations of TRPH was detected beneath the south end of
this tank at a depth of 2 feet (T4S-2). Table 2 presents laboratory data from the September 1994 UST
removal.
"No Further Action" and closure were granted by the City of Bakersfield Fire Department.
Three double-wall fiberglass, ,12,000-gallon gasoline USTs and one double-wall fiberglass, 1,000-gallon
used-oil UST were installed during October 1994 (Figure 2 and Table 3).
FLUOR DANIEL GTI ~
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Soil Assessment Report
Chevron Facility No, 9-4416
Page 2
October 22, 1997
, 3.0GEOLOGY/HYDROGEOLOGY
Chevron facility no. 9-4416 is located in the southwest portion of Bakersfield in a mixed
commercial/residential area. The approximate elevation of the facility is 375 feet above sea level.
Topography in the region is flat, and no natural bodies of water adjoin the site.
The site overlies alluvial-fan deposits of the Kern River (CDM~, 1965); Sediments underlying the region
consist of fluvial deposits including silt, sand I and gravel. Sediments encountered during drilling activities
consist primarily of fine- to coarse-grained sand. An unconfined aquifer is present below the site at a depth
, of approximately 195 feet. The gradient of this aquifer is essentially flat (KCWA, 1995a). Shallow, perched
water has not been identified in the vicinity ofthe site (KCWA, 1995b). Drilling logs with detailed lithologic
descriptions are provided in Appendix A.
4.0 ASSESSMENT PROCEDURES
Assessment activities were completed on October 9,1997. .Three slant borings (B1 through B3) were
drilled to determine soil conditions in the vicinity of the dispensers and USTs. The total depth of each
boring was 30 feet. Undisturbed soil samples were collected at 5-foot intervals. Specific sampling, boring
abandonment, arid waste-handling procedures are discussed in detail in Appendix B.
5.0 SOIL SAMPLE ANALYTICAL RESULTS
Two soil samples from each ofthe three borings were shipped via overnight courier to Del Mar Analytical
(ELAP Certification No. 1197) in Irvine, California, and analyzed for BTEX, TPHG, and MTBE using EPA
methods 8020, 8015-modified and 8020, respectively (Table 4). BTEX, TPHG, and MTBE were not
detected. Laboratory reports and chain-of-custody documents are presented in Appendix C.
6.0 SUMMARY AND CONCLUSIONS
The findings of the baseline assessment activities at Chevron facility 9-4416 can be summarized as follows:
· Sediments encountered during the drilling activities consist primarily of fine- to coarse-
, grained sand;
· An unconfined aquifer is present below the site at a depth of approximately 195 feet; and
· Three borings were drilled and sampled to determine soil conditions beneath the
dispensers and USTs. Two soil samples from each of the three borings were analyzed for
BTEX¡ TPHG, and MTBE. No hydrocarbons were detected.
FLUOR DANIEL GTI ~
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Soil Assessment Report
Chevron Facility No. 9-4416
Page 3
October 22, 1997
7.0 REFERENCES
CDMG (California DMsion of Mines and Geology), 1965, Geologic map of California, Bakersfield sheet:
KCWA (Kern County Water AQency), 1995a, Improvement District No.4, 1994 Report on Water Conditions,
-, 1995b, Water Supply Report-1993.
USGS (United States Geological Survey), 1954; Rev. 1968 and 1973, Gosford Quadrangle, 7.5 minute
series.
.;,
FLUOR DANIEL GTI ~
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TABLES
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Soil Assessment Report
Chevron Facility No. 9-4416
Page 5
October 22, 1997
Table 1. Former UST information summarv.
Tank Capacity Product Stored Composition Condition Year
Number (gallons) Installed/Removed
T1 10,000 Medium Grade Fiberglass Intact; No 1978/1994
Unleaded Gasoline holes
T2 10,000 Supreme Grade Fiberglass Intact; No 1978/1994
Unleaded Gasoline holes
T3 10,000 Regular Grade Fiberglass Intact; No 1978/1994
Unleaded Gasoline holes
T4 1,000 Used Oil Steel Intact; No 1971/1994
holes
Table 2. September 1994 UST removal analytical results On mglkg) of soil samples from beneath
disDensers, ciDina and USTs.
Sample Benzene Toluene Ethyl- Xylenes TPHG TRPH
No. benzene
T1 W-2 <0.005 <0.005 <0.005 <0.015 <10 -
T1 W-6 <0.005 <0.005 <0.005 <0.015 <10 -
T1 E-2 <0.005 <0.005 <0.005 <0.015 <10 -
T1 E-6 <0.005 <0.005 <0.005 <0.015 <10 -
T2W-2 <0.005 <0.005 <0.005 <0.015 <10 -
T2W-6 <0.005 <0.005 <0.005 <0.015 <10 -
T2E-2 13.1 21.0 36.1 146 4,760 -
T2E-6 <0.005 <0.005 <0.005 3.55 347 -
T2E-8 <0.005 <0.005 <0.005 <0.015 <10 -
T3W-2 <0.005 <0.005 <0,005 <0.015 <10 -
T3W-6 <0.005 <0.005 <0,005 <0.015 <10 -
T3E-2 <0.005 <0.005 <0,005 <0.015 <10 -
T3E-6 <0.005 <0.005 <0,005 <0.015 <10 -
T 4S-2 - - - - - 35.2
T 4S-6 - - - - - 28.2
T4N-2 - - - - - 22.2
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Soil Assessment Report
Chevron Facility No. 9-4416
Page 6
October 22, 1997
Table 2. September 1994 UST removal analytical results Qn mg/kg) of soil samples from beneath
d' dUST
Ispensers, JI ping an s.
Sample Benzene Toluene Ethyl- Xylenes TPHG TRPH
No. benzene
T4N-6 - - - - - 11.7
DNE-2 <0.005 <0.005 <0.005 <0.015 <10 -
DNE-6 <0.005 <0.005 <0.005 <0.015 <10 -
DNM-2 <0.005 <0.005 <0.005 <0.015 <10 -
DNM-6 <0.005 <0.005 <0.005 <0.015 <10 -
DNW-2 <0.005 <0.005 <0.005 <0.015 <10 -
DNW-6 <0.005 <0.005 <0.005 <0.015 <10 -
DSE-2 <0.005 <0.005 <0.005 <0.015 <10 -
DSE-6 <0.005 <0.005 <0.005 <0.015 <10 -
DSM-2 <0.005 <0.005 <0.005 <0.015 <10 -
DSM-6 <0.005 <0.005 <0.005 <0.015 <10 -
DSW-2 <0.005 <0.005 <0.005 <0.015 <10 -
DSW-6 <0.005 <0.005 <0.005 <0.015 <10 -
P1-2 <0.005 <0.005 <0.005 <0.015 <10 -
P1-6 <0.005 <0.005 <0.005 <0.015 <10 -
P2-2 0.015 <0.005 <0.005 <0.015 <10 -
P2-6 <0.005 <0.005 <0.005 <0.015 <10 -
P3-2 <0.005 <0.005 <0.005 <0.015 <10 -
p~~ <n nnl:\ <n nn¡:; <nnnl:\ <n 015 <10
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Soil Assessment Report
Chevron Facility No. 9-4416
Page 7
October 22,1997
Table 3. Current UST information summary.
Tank Capacity Product Stored Composition Year
Number (aallonš) Installed
T1 12,000 Supreme Grade Double-wall 1994
Unleaded Gasoline Fiberalass
T2 12,000 Plus Grade Double-wall 1994
Unleaded Gasoline Fiberalass
T3 12,000 Regular Grade Double-wall 1994
Unleaded Gasoline Fiberglass
T4 1,000 Used Oil Double-wall 1994
Fiberalass
Table 4. October 1997 8aseline soil sampling analytical results Qn mg/kg) of soil
samDles. See Fieure 2 for borine locations.
Sample Sample Benzene Toluene Ethyl- Xylenes TPHG MTBE
No. DeDth benzene
81-20 20' <0.005 <0.005 <0.005 <0.015 <1.0 <1.0
81-30 30' <0.005 <0.005 <0.005 <0.015 <1.0 <1.0
81-20 20' <0.005 <0.005 <0.005 <0.015 <1.0 <1.0
81-30 30' <0.005 <0.005 <0.005 <0.015 <1.0 <1.0
81-20 20' <0.005 <0.005 <0.005 <0.015 <1.0 <1.0
R?_"n ~n' <nnnJ:;. ...nnnJ:;. <nnnJ:;. ...n n1J:;. <1 n <1 n
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FIGURES
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SOURCE: USGS 7.5 MINUTE QUADRANGLE
GOSFORD/1954; REV, 1968 AND 1973
FILE, PROJECT NO" PM PE/RG
LOC 0=1) 100857
REV.
FIGURE:
DES, DATE' 1
KLH 10/97
QUADRANGLE LOCATION
SCALE 1:24,000
o 2,000
SCALE
~
FLUOR DANIEL GTI
CLIENT:
CHEVRON PRODUCTS COMPANY
FACILITY NO, 9-4416
OCATION:
3699 'w'ILSON ROAD
BAKERSFIELD, CALIFORNIA
4,000
.,
FEET
SITE LOCATION MAP
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GRAPHIC SQ¡£
FLUOR DANIEll GTI
CLIENT: FILE: PROJECT NO.: PM PE/RG
CHEVRON PRODUCTS COMPANY SM (1 =30) 100857
FACILITY 9-4416 REV.
LOCATION: FIGURE:
3699 WILSON ROAD DES. 2
BAKERSFIELD, CALIFORNIA KLH 10/97
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Boring location
Arrow Indicates direction of slant
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Former Used-Oil USI 28.2
N/S
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I.........,
./" TPHG CONCENTRATION IN 2-FOOT SAMPLE
4,760 x SAMPLE LOCATION
347
dO -...... TPHG CONCENTRATION IN 6-FOOT SAMPLE
..........
TPHG CONCENTRATION IN 8-FOOT SAMPLE
NOTE NON-DETECT SAMPLES ARE NOT ANNOTATED
N/S = NOT SAMPLED
* TRPH RESULTS
§J n.n
TPHG ~N SOIL
SEPTEMBER 1994--UST REMOVAL
FLUOR DANIEll GTI
CLIENT:
CHEVRON PRODUCTS COMPANY
FACILITY 9-4416
_ SCN.E
LOCATION:
FILE: PROJECT NO.: PM PE/RG
SM (1=30) 100857
REV.
FIGURE:
DES. DATE: 3
KLH 10/97
3699 WILSON ROAD
BAKERSFIELD, CALIFORNIA
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____ BENZENE CONCENTRATION IN 2-FOOT SAMPLE
~ X SAMPLE LOCATION
<0,005 ~
<0,005 ~ BENZENE CONCENTRATION IN 6-FOOT SAMPLE
BENZENE CONCENTRATION IN 8-FOOT SAMPLE
NOTE NON-DETECT SAMPLES ARE NOT ANNOTATED
N/S = NOT SAMPLED
~ n-n
FLUOR DANIEL GTI
CLIENT:
CHEVRON PRODUCTS COMPANY
FACILITY 9-4416
GRAPHIC SCAL£
BENZENE IN SOIL
SEPTEMBER 1994--UST REMOVAL
FILE: PROJECT NO.: PM PE/RG
SM (1 =30) 100857
REV.
FIGURE:
DES. DATE: 4
KLH 10/97
LOCATION:
3699 WILSON ROAD
BAKERSFIELD. CALIFORNIA
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APPENDIX A
DRilliNG lOGS
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FLUOR DANIEL G'I~
Drilling Log
Soil Boring 81
Project Chevron 9-4416 Owner Chevron Products Com{)anv
Location 3699 Wilson Road, Bakersfield. California Pro;. No. 100851
Surface Elev. Total Hole Depth 30 ft. Diameter 8 in.
Top of Casing Water Level Initial Static
Screen: Dia Length Type/Size
Casing: Dia Length Type
Fill Material Rig/Core Mobi'le B-80
Drill Co. Consolidated Dri'llinq Method Hollow Stem Auqer
Driller Tom Cole Log By Kevin Hamilton Date 10/9/97 Permit .,
Checked By Jon Parker License No. RG4728
See Site Map
For Boring Location
COMMENTS:
81 arilfea at east ena of southern
aispenser islana. ApprDximately 15' frDm
the center of the aispensers. Oritlea at ¿
30-aegree angle.
Q .... >- iii
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.... c Ii 0 In
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- . OE 41 0 > ë3
a.::: ....0. ëi U 0 0.0
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E ~ Q (J)
Q a: ... u
CO 0 (!)
(/) iD êI( (J)
:)
f- -2 -
f- 0 -
- 2 -
- 4 -
I .... .
0,0 81-0
f- 6 -
f- 8 -
f- 10 - 0,0 81-10' I
- 12 - SP
- 14-
0,0 81-15' I
16 -
f- 18 -
f- 20 - 0.0 81-20' I
- 22-
-24- .... .
10/14/1997 lithlog-June.96
Description
(Color, Texture, Structure)
Trace < 10%. Little 10% to 20%. Some 20% to 35%. And 35% to 50%
SAND: very fine to medium grained sand, some coarse grained sand, silt
«5%), poorly graded, yellowish brown to moderate brown, damp, no
hydrocarbon odor.
SAND: fine to coarse grained sand, poorly graded, light yellowish brown,
damp, no hydrocarbon odor.
SAND: very fine to medium grained sand, poorly graded, light yellowish
brown, damp, no hydrocarbon odor.
SAND: fine to medium grained sand, poorly graded, yellowish brown, damp,
no hydrocarbon odor.
Page: 1 of 2
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!FLUOR DANIEL GTI~
Drilling Log
Soil Boring 81
Project Chevron 9-44/6 Owner Chevron Products Company
Location 3699 Wi/son Road. Bakersfield. California Proj. No. /00857
Q ...... >- cñ
- ë Qj ~ CI) Description
.s::.,.... QÊ ;::I CD
.. . Q 0 > .s::.o¡ ë3
a.:::: _a. ëi u 0 0.0
Q ~ 0..,9- u CD-J (Color, Texture, Structure)
Q E x GI ... II)
CD 0 a: C!) u Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50%
(f) ãi ~ II)
::>
I- 24 - -
0,0 81-25' I .. . SAND: fine to medium grained sand, some coarse grained sand, trace very
. . fine grained sand, poorly graded, yellowish brown, damp, no hydrocarbon
- 26- odor.
SP
- 28-
.. .
. .
-30- I .. . SAND: fine to coarse grained, poorly graded, yellowish brown, damp, no
0,0 81-30' I
hydrocarbon odor.
- 32-
-34-
-36-
....38-
-40-
I- 42-
I- 44-
I- 46 -
I- 48-
- 50 -
- 52 -
- 54 -
r- 56 -
10/14/1997 lithlog-June,96
Page: 2 of 2
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FLUOR DANIEL GTI~
Drilling Log
Soil Boring 82
Project Chevron 9-44/6 Owner Chevron Products Company
Location 3699 Wilson Road, Bakersfield, California Proj. No. /00857
Surface Elev. Total Hole Depth 30 ft. Diameter 8 in.
Top of Casing Water Level Initial Static
Screen: Dia ,Length Type/Size
Casing: Dia Length Type
Fill Material Rig/Core Mobile B-80
Drill Co. Consolidated onllinq Method Hollow Stem Auqer
Driller Tom Cole Log By Kevin Hamilton Date 10/9/97 Permit .,
Checked By Jon Parker License No. RG4728
See Site Map
For Boring Location
COMMENTS:
82 drilled at east end of northern
dispenser island. Approximately 12' from
the center of the dispensers, Drilled at ,
20-degree angle.
0 ..... » ui
.... ë Gi 0 <I)
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0 CD 0 a: cD u
(/) iii ~ II)
::>
- -2-
- 0 -
- 2 -
Description
(Color, Texture, Structure)
Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to 50%
- 4 -
1.2 82-5'
- 6 -
- 8 -
- 10 - 1.3 82-10'
- 12-
-14 -
2.1 82-15'
-16 -
- 18 -
-20- 3.1 82-20'
- 22-
-24-
10/14/1997 Iithlog-June,96
SM
I,', '
, ,
Silty SAND: fine to coarse grained sand, silt (35%), poorly graded, brown
to dark brown, damp, no hydrocarbon odor.
I····
I····
I····
SAND: very fine to fine grained sand, poorly graded, brown, damp, no
hydrocarbon odor.
SP
SAND: very fine to medium grained sand, poorly graded, yellowish brown,
damp, no hydrocarbon odor.
SAND: fine to medium grained sand, some coarse grained sand, poorly
graded, yellowish brown, no hydrocarbon odor.
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FWOR DAHIlL GTI~
Drilling Log
Soil Boring 82
Project Chevron 9-4416 Owner Chevron Products Company
Location 3699 Wilson Road. Bakersfield, California Proj. No. 100857
0 ..... >- ui
.... ë ìi 0 UI Description
~-- -- ~ :EO) CD
+' . OE Q 0 > Ü
a.::: ....0. ã. U 0 0.0
Q ~ a... 3 u CD..... (Color, Texture, Structure)
0 E ~ CII ... If
CD 0 a:: (!) u Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50%
(/) ãi ~ If
::>
-24- -
2.8 82-25' I SAND: fine to medium grained sand, trace coarse grained sand, poorly
- 26- graded, yellowish brown, damp, no hydrocarbon odor.
SP
- 28-
-30- I .. . SAND: fine to coarse grained, poorly graded, yellowish brown, damp, no
2,9 82-30' I
hydrocarbon odor,
- 32-
-34-
f- 36 -
-38-
-40-
-42-
-44-
-46-
-48-
- 50-
I- 52 -
'- 54 -
-56 -
10/14/1997Iithlog-June,96
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FWOR DANIEL GTI~
Drilling Log
Soil Boring 83
Project Chevron 9-44/6 Owner Chevron Products Company
Location 3699 Wi'lson Road, Bakersfield, California Pro . No. 100857
Surface Elev. Total Hole Depth 30 ft. Diameter 8 in.
Top of Casing Water Level Initial Static
Screen: Dia Length Type/Size
Casing: Dia Length Type
Fill Material Rig/Core Mobile B-80
Drill Co. Consolidated DollinQ Method Hollow Stem AUQer
Driller Tom Cole Log By Kevin Hamilton Date 10/9/97 Permit #J.
Checked By Jon Parker License No. RG4728
See Site Map
For Boring Location
COMMENTS:
83 arillea on west ena of the USTs.
Approximately IS' from the center UST.
Drillea at a 25-aegree angle,
Q "- » .,¡
-
.... c ... .Q VI
~~ ~ ::;) CII 10
.... . aE 41 0 > ~CI Ü
0.;::: ....0. ã. U 0 0.0
4I~ 0..,9- 0 10..... (/)
a E ~ CII ...
10 0 a: (!) u
(f) ãi ~ (/)
::>
-2-
Description
(Color, Texture, Structure)
Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50%
~ 0 -
0°;<:
b ;>~
CQ,-
Qo~
CQ,-
bo~
CQ,-
Q o~ GP
I~~~
Qo~
CQ,-
ooS
0",-
Pea Gravel: fill material from former USTs.
~ 2 -
~ 4 -
2,1 83-5'
~ 6 -
~ 8 -
I- 10 - 1.5 83-10' I
I- 12 -
~ 14 -
0.0 83-15' I
I- 16 - SP
I- 18 -
I ".. ..
- 20- 0,0 83-20'
""" "
- 22-
,,". "
I- 24 -
10/14/1997 lithlog-June,96
SAND: fine to fine grained sand, some coarse grained sand, poorly graded,
yellowish brown, damp, no hydrocarbon odor.
SAND: fine to medium grained sand, trace coarse grained sand, poorly
graded, yellowish brown, damp, no hydrocarbon odor.
SAND: very fine to medium grained sand, poorly graded, yellowish brown,
damp, no hydrocarbon odor.
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FLUOR DANIEL GT.~
Drilling Log
Soil Boring 83
Project Chevron 9-4416 Owner Chevron Products Company
Location 3699 Wilson Road. Bakersfield. California Proj. No. 100857
0 ...... >- ui
.... ë Gi ~ tJ
.J:~ ~ ~ co Description
- . oE Q 0 > .J:O) U
a.::: ....0. Q. U 0 0.0
~~ CL.~ 0 co...J (Color, Texture, Structure)
E :t II ... (/
co 0 a:: CD u Trace < 10%. Little 10% to 20%. Some 20% to 35%. And 35% to 50%
(/) ii5 ~ (/
~
-24- -
1.8 83-25' I SAND: fine to very coarse grained sand. poorly graded, yellowish brown,
- 26- damp. no hydrocarbon odor.
SP
- 28-
-30- . ... . SAND: medium to very coarse grained sand. poorly graded, yellowish-
1.1 83-30' I
orangish brown, damp, no hydrocarbon odor.
- 32-
'- 34 -
I- 36 -
-38-
'- 40-
I- 42-
I- 44-
I- 46 -
I- 48 -
I- 50 -
I- 52 -
-54-
-56 -
10/14/1997 Iithlog-June,96
Page: 2 of 2
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APPENDIX B
METHODOLOGY
[?[l,QD@Œ). 0£..Gi'JO[J[], @U'o ~
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Soil Assessment Report
Chevron Facility No, 9-4416
Page 61
October 22, 1997
B.1 SOIL BORINGS
A truck-mounted hollow-stem auger drilling rig was used for the assessment. Samples were collected from
the borings as described in Section B.2. Upon completion, the borings were backfilled the soil cuttings and
capped with cold patch asphalt.
B.2 SOIL SAMPLING
Soil samples were collected at 5-foot intervals with a split-spoon sampler. The sampler was driven ahead
of the augers into undisturbed sediments using a 140 lb. down-hole, slide-hammer. The sampler was fitted
with brass sample tubes. When the filled sampler was retrieved, the tube to be submitted for analysis was
separated from the other tubes with a knife and sealed in such a way that no significant headspace was left
at either end of the iube. The tube was sealed at each end with a teflon sheet, a plastic cap, and tape to
secure the plastic cap. The sample was labeled to indicate date and time of sample collection, boring
number and depth of the sample. The sample was placed on ice in an ice chest pending delivery to an
analytical laboratory.
Another sample tube retrieved from the sampler was field screened with a PID for volatile organic
compound (VOC) emissions. To do this approximately 2/3 of the material in the sample tube was removed
and the tube was capped on both ends with a plastic cap. The tube was then shaken vigorously for several
seconds and the inlet to the PID was inserted into a small hole in one of the caps. The PID reading was
recorded on the drilling log for that sample interval.
The material from the second sample tube was described on the drilling log of the boring using visual
classification according to the Unified Soil Classification System. Color, grain size, and sorting charts were
used to aid in the soil classification.
Between sampling events, the sampling equipment was cleaned using a three-bucket wash system. In this
system, the tubes and samplers are scrubbed in a bucket of biodegradable detergent, rinsed in a second
bucket of tap water and given a final rinse in a bucket of distilled water.
B.3 LABORATORY ANALYSIS
Soil samples were shipped via overnight courier to Del Mar Analytical in Irvine, California. Soil samples were
extracted using EPA method 5030 and analyzed for BTEXJMTBE and TPHG concentrations using EPA
methods 8020 and 8015-modified, respectively. Detection limits for the analytes were as follows:
II 0.005 mg/kg for BTE;
III 0.015 mg/kg for X;
II 1 mg/kg for TPHG; and
II 1 mg/kg for MTBE
!?[]'QÐ@[2 @)&C\'Jom1 ®'U'o ~
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Soil Assessment Report
Chevron Facility No. 9-4416
Page 82
October 22, 1997
8.4 WASTE MANAGEMENT
The soil cuttings were screened for the presence of hydrocarbons using a photoionization detector (PID).
No hydrocarbons were detected. The soil cuttings were used to backfil! the borings since no hydrocarbons
were detected.
[?[I,®@[;l 1D&C'\JOŒ[1 @'U'O ~
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t<'¡ ':,. ',:>
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APPENDIX C
LABORATORY REPORTS
[?0'(\!J@ ;¡ 08[x]0!311 ®'U'o ~
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Del Mar Analytical
2852 Alton Ave.. Irvine, CA 92606 (714) 261-1022 FAX (714) 261·1228
1014 E, Cooley Dr., Suite A, Colton, CA 92324 (909) 370-4667 FAX (909) 370-1046
16525 Sherman Way, Suite C-ll, Van Nuys, CA 91406 (818) 779-1844 FAX (818) 779-1843
2465 W. 12th St.. Suite 1, Tempe, AZ 85281 (602) 968·8272 FAX (602) 968-1338
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Fluor OaniellGTI, Inc. Client Project 10: Chevron 9-4416
5080 California Avenue, Suite 300 Wilson Road, Bakersfield
Bakersfield, CA 93309 Analysis Method: EPA 5030/CA OHS Mod. 8015/8020
Attention: Jon Parker First Sample #: GJ01929
Sampled:
Received:
Extracted:
Analyzed:
~
Oct 9, 1997
Oct 10, 1997
Oct 11-13, 1997
Oct 11-13,1997
Oct 13, 1997
laboratory
Number
VOLAT~LE FUEL HYDROCARBONS/BTEX DISTINCTION (CA DHS Mod. EPA 8015/8020)
Sample Volatile Fuel Ethyl Total
Description Hydrocarbons Benzene Toluene Benzene Xylenes
Soil mg/Kg mg/Kg mg/Kg mg/Kg mg/Kg
(ppm) (ppm) (ppm) (ppm) (ppm)
GJ01929
B1-20
N.D.
N.D.
N.D.
N.D.
0.0050
N.D.
0.0050
N.D.
0,0050
N.D.
0.0050
N.D.
0,0050
N.D.
0.0050
N.D.
0,015
N.D.
0,015
N.D.
0,015
N.D.
0.015
N.D.
0,015
N.D.
0.015
Volatile Fuel Hydrocarbons are quantitated against a gasoline standard, Hydrocarbons detected by this method range from C6 to C12,
Analytes reported as N,D, were not present at or above the reporting limit. Dilution factors are due to matrix effects and other factors,
Dilution: 1
Reporting Limit:
1,0
0.0050
0,0050
GJ01930
B1-30
N.D.
N.D.
N.D.
Dilution: 1
Reporting Limit:
1,0
0.0050
0.0050
GJ01931
B2-20
N.D.
N.D.
N.D.
Dilution: 1
Reporting Limit:
1,0
0,0050
0,0050
GJ01932
B2-30
N.D.
N.D.
N.D.
Dilution: 1
Reporting Limit:
1,0
0.0050
0,0050
GJ01933
B3-20
N.D.
N.D.
N.D.
Dilution: 1
Reporting Limit:
1.0
0,0050
0.0050
GJ01934
B3-30
N.D.
N.D.
N.D.
Dilution: 1
Reporting Limit:
1.0
0.0050
0.0050
DEL MAR ANALYTICAL (ELAP #1197)
Resutts pertain only to samples tested in the laboratory, This report shall not be
reproduced, except in full, without written permission from Del Mar Analytical.
GJ01929,FDG <1 of 4>
~ 2852 Alton Ave.. Irvine, CA 92606 (714) 261-1022 FAX [714) 261-1228
, " ' Del Mar Analyt°lcal 1014 E, Cooley Dr" Suite A. Colton, CA 92324 [909) 370-4667 FAX (909) 370·1046
16525 Sherman Way, Suite C-ll, Van Nuys, CA 91406 [818) 779-1844 FAX (818) 779-1843
I Fluor Daniel/GTI, Inc. Client Project ID: Chevron 9-4416 2465 W 12th St.. Suite 1, Tempe, AZ 85:~m~~:~~68'827~:: (:~2) :::;38
5080 California Avenue, Suite 300 Wilson Road, Bakersfield Received: Oct 10, 1997
I 8akersfield, CA 93309 Analysis Method: EPA 5030/8020 Extracted: Oct 11-13, 1997
Jon Parker First Sample #: GJ01929 Analyzed: Oct 11-13, 1997
-
Oct 13, 1997
I
MTBE (EPA 8020 MODIFIEID)
Sample Sample Reporting
Description Result Limit
Soil mg/Kg mg/Kg
(ppm) (ppm)
81-20 N,D, 1.0
81-30 N,D, 1.0
82-20 N,D. 1.0
82-30 N.D. 1,0
83-20 N.D. 1,0
83-30 N.D, 1.0
Laboratory
Number
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GJ01929
GJ01930
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I.
GJ01931
GJ01932
I
GJ01933
I
GJ01934
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MTBE = Methyl tert-Butyl Ether
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Dilution
Factor
1,0
1,0
1,0
1,0
1.0
1,0
Analytes reported as N,D. were not present at or above the reporting limit. Dilution factors are due to matrix effects and other factors,
DEL MAR ANALYTICAL (ELAP #1197)
I
Results pertain only to samples tested in the laboratory, This report shall not be
reproduced, except in full, without written permission from Del Mar Analytical.
GJ01929,FDG <2 of 4>
Del Mar Analytical
2852 Alton Ave.. Irvine, CA 92606 (714) 261-1022 FAX (714) 261-1228
1014 E, Cooley Dr., Suite A, Colton, CA 92324 (909) 370,4667 FAX (909) 370- ¡ 046
16525 Sherman Way, Suite C-11, Van Nuys, CA 91406 [818) 779·1844 FAX (818) 779-1843
2465 W. 12th St.. Suite 1, Tempe, AZ 85281 (602) 968-8272 FAX (602) 968-1338
Fluor Daniel/GTI, Inc.
5080 California Avenue, Suite
Bakersfield, CA 93309
Attention: Jon Parker
Extracted: Oct 11-13, 1997
Analyzed: Oct 11-13, 1997
Reported: Oct 13, 1997
I
VOLATILE FUEL HYDROCARBONS/BTEX DISTINCTION (CA DHS Mod. EPA 8015/8020)
Sample Volatile Fuel Ethyl
Description Hydrocarbons Benzene Toluene Benzene
mg/Kg mg/Kg mg/Kg mg/Kg
(ppm) (ppm) (ppm) (ppm)
Total
Xylenes
mg/Kg
(ppm)
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Method Blank
N.D.
N.D.
N.D.
N.D.
N.D.
Dilution: 1
Reporting Limit:
1.0
0,0050
0,0050
0,0050
0.015
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DEL MAR ANALYTICAL (ELAP #1197)
I
Volatile Fuel Hydrocarbons are quantitated against a gasoline standard, Hydrocarbons detected by this method range from C6 to C12,
Analytes reported as N,D, were not present at or above the reporting limit. Dilution factors are due to matrix effects and other factors,
I
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Results pertain only to samples tested in the laboratory, This report shall not be
reproduced, except in full, without written permission from Del Mar Analytical.
GJO 1929, FDG <3 of 4>
2852 Alton Ave.. Irvine, CA 92606 (714) 261-1022 FAX (714) 261-1228
Del Mar Analytical
1014 E, Cooley Dr., Suite A, Colton, CA 92324
16525 Sherman Way, Suite C·l1, Van Nuys, CA 91406
2465 W. 12th St" Suite 1, Tempe, AZ 85281
(909) 370,4667 FAX (909) 370·1046
(818) 779-1844 FAX (818) 779-1843
(602) 968-8272 FAX (602) 968·1338
I
Fluor Daniel/GTI, Inc,
5080 California Avenue, Suite
Bakersfield, CA 93309
Attention: Jon Parker
Extracted:
Analyzed:
Reported:
Oct 11-13, 1997
Oct 11-13,1997
Oct 13, 1997
I
MTBE (EPA 8020 MODIFIED)
I
Sample
Description
Sample
Result
mg/Kg
(ppm)
Reporting
Limit
mg/Kg
(ppm)
Dilution
Factor
I
Method Blank
N,D.
1.0
1
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MTBE = Methyl tert-Butyl Ether
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DEL MAR ANALYTICAL (ELAP #1197)
Analytes reported as N,D, were not present at or above the reporting limit. Dilution factors are due to matrix effects and other factors,
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Resuns pertain only to samples tested in the laboratory, This report shall not be
reproduced, except in full, without written permission from Del Mar Analytical.
GJ01929,FDG <4 of 4>
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Del Mar Analytical
2852 Alton Ave" Irvine, CA 92606
1014 E, Cooley Dr., Suite A, Colton, CA 92324
16525 Sherman Way, Suite C-ll, Van Nuys, CA 91406
2465 W. 12th SI., Suite 1, Tempe, AZ 85281
(714) 261-1022 FAX (714) 261-1228
(909) 370·4667 FAX (909) 370-1046
(818) 779·1844 FAX (818) 779-1843
(602) 968,8272 FAX (602) 968-1338
:,:,;,:,:-:,;,:-:,:,:-:::,:,::,;".;,:,:,:,:,:-:,:-:,:,;,:,;.:,:,;,;,;,:,;,;.:,:,:,:-:,:,:,:,:-:.;,;,;,:,:,:-:-:.;,:,.;,;,:-:.:,;.:.:,:-:,;,:-:-:,;,;.;.;.;.;.;,:-:,:-:,:.:-:,:-:-:,;.;
I":'" ' "" ',',',',',',',',',','"'"",',','"',",",',",',',',',','"""""'",:,:,:,:,:,}}}}}:{:}}}}}}::):::::
I
!
:Ml~~lM~m"ÐIT;:REeø:Rm
:::::::::::::::::::::...,....:..,9:,.;,;,:-:>,:0...,.,..::::::;.."..,.';-:,.::,:::,:-:','':::;":;-,':'.'",,,;.,,;:::::::,'.,,/,'.:::,..';:;...::
f\~\\\\FYt%!\rtrrrmmrmf::::]}):::}::::::: {:~(rr;rrfrf~:f\ff~~f\r:\\\\;¡)\~~
EPA Method 8015/8020
Matrix: Soil
Date: 10/13/97
Sample #: GJ01929
Batch #: GJ13141S
Analvte
R1
ppm
MS
ppm
MSD PR1
ppm %
PR2 RPD Mean PR
% % %
Acceptance Limits
RPD Mean PR
§2
ppm
TPH
0.037 1.1 1.2 1.2 103 105 1.3 104 <30 70 - 130
0.00016 0.10 0.094 0.095 94 95 0.64 94 <25 70 - 129
0.00050 0.10 0.091 0.093 91 92 1.7 91 <25 70 -127
0 10.10 0.095 0.096 95 96 0.91 96 <25 72 - 130
0.00030 0.30 0.28 0.28 94 94 0.83 94 <25 73 - 130
Benzene
Toluene
Ethylbenzene
Xylenes
Definition of Terms
R1. . . . . . . . . . . . . . . . . . .. Result of Sample Analysis
Sp. . . . . . . . . . . . . . . . . . .. Spike Concentration added to sample
MS. . . . . . . . . . . . . . . . . . .. Matrix Spike Result
MSD. . . . . . . . . . . . . . . . . . . Matrix Spike Duplicate Result
PR1. . . . . . . . . . . . . . . . . .. Percent Recovery of MS; «MS-R1)/SP) X 100
PR2. . . . . . . . . . . . . . . . . .. Percent Recovery of MSD; «MSD-R1)/SP) X 100
RPD. . . . . . . . . . . . . . . . . .. Relative Percent Difference; «MS-MSD)/(MS+MSD)/2) X 100
Mean PRo . . . . . . . . . . . . .. Mean Percent Recovery
Acceptance Limits. . . . .. Determined by in-house Control Charts
Del Mar Analytical
- - - - - ~~ - s.*3~~ .;.rt~- - -
,
u C") PROJECT NAME C-h.J 14411P~/Bnt.tX~ORATORY NAME ~ M.a,y .Åf,)ð..\yf.t\CQ.\ CHAIN-OF-CUSTODY
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