HomeMy WebLinkAboutMITIGATION (2)
v~
T
E IMPACTED SOIL
AT
PENCE PETROLEUM
BAKERSFIELD, CALIFORNIA
---/~I
/
/
PRESENTED TO
MR. ROBERT PENCE
PENCE PETROLEUM
AND
MRS. FLORA DARLING
KERN COUNTY
DEPARTAMENT OF ENVIRONMENTAL HEALTH SERVICES
PRESENTED BY
, ..'
tit. .:~¡.
W;
AQUAGEOSCIENCES, INC.
JUNE, 1994
C?~/Z~
PATRICK MCCULLOUGH
STAFF GEOLOGIST
~~r-
1701 Westwind Drive, Suite 101 · Bakersfield, California 93301
(805) 328-0962 · FAX (805) 328-1129
.
TABLE OF CONTENT
JUN .2 I 1994
PAGE NO.
1.0 EXECUTIVE SUMMARY 2
2.0 BACKGROUND -2
3.0 PROJECT HISTORY 3
4.0 FIELD ACTIVITIES 7
4.1 Boring Methods 7
4.2 Soil Sampling 7
4.3 Field Screening of Soil Samples 7
4.4 Soil Analyses 8
5.0 SITE GEOLOGY 8
6.0 FINDINGS 8
7.0 DISCUSSION AND CONCLUSIONS 9
7.1 Groundwater Risks 9
8.0 REFERENCES 12
9.0 RECOMMENDATIONS 13
10.0 LIMITATIONS . 13
.
Exhibit 1
Exhibit 2
Exhibit 3
Exhibit 4
Exhibit 5
Table 6
Table 7
Table 8
Table 9
Table 10
Table 11
Vicinity Map
Site Map/Boring Locations
Aerial View of Plume
Cross-Section A-A'
Cross-Section B-B'
Leaching Potential Anlysis
General Risk Appraisal
Benzene Environmental Fate Worksheet
Toluene Environmental Fate Worksheet
Ethylbenzene Environmental Fate Worksheet
Xylene Environmental Fate Worksheet
Appendix A Site Assessment Lab Reports and Chain-of-Custody
Appenqix B Additional Inlet Wells - Lab Reports and Chain-of-Custody
Appendix C Confirmation Boring Logs
Appendix D Confirmation Boring - Lab Reports and Chain-of-Custody
Appendix E Acceptable Cumulative Soil Contamination Levels - BTEX
Appendix F Risk Assessment Calculations
.
1
.
.
.
1.0 EXECUTIVE SUMMARY
G¡:¡soline impacted soils were discovered during the removal of three underground
fuel tanks in November, 1989 at the Pence Petroleum Company facility located at 901
E. Truxtun Avenue in Bakersfield, California. laboratory analysis revealed soil
beneath the former tanks and dispenser was impacted with petroleum hydrocarbons.
In July and November 1990 four soil borings were advanced to a maximum depth :of
120 feet below surface grade, but failed to define the vertical and lateral extent of the
plume. In October 1991 a Site Assessment to define the extent of impacted soils and
install vapor inlet and extraction wells was performed by AquaGeosciences Inc. (AGI)
in which fóur soil borings were advanced and sampled. The borings were advanced
beneath the former tank cluster and dispenser island where the highest levels of
petroleum hydrocarbons were previously detected. The interpretation of data
collected showed that soils beneath the former gasoline tank cluster are impacted to a
depth ranging between 71.5 to 86 feet below the surface grade (bsg) in VI-4 to
between 100 and 105 feet (bsg) in boring VE-1, and below 120 feet (bsg) at the B3A
location. Subsequent to the installation of the additional vapor inlet and extraction
wells a remedial program was initiated using an internal combustion engine to remove
the soil vapors from the impacted area and to destroy the hydrocarbons entrained in
thE~ vapor stream.
Additional air/vapor inlet wells were drilled and installed in October, 1993 to enhance
the remedial program and soil samples were collected to evaluate the effectiveness of
the remediation to date. laboratory analysis of soil samples collect from the additional
wells indicated the petroleum constituents have been significantly reduced in
concentration and that TPH as gasoline concentrations has been significantly reduced
in all but the southern portion of the plume.
In the months of January and February of 1994, the VES located on the site began to
use supplemental propane almost exclusively. This indicated that the vapors being
drawn from the ground no longer contained concentrations sufficient to run the
machine efficiently or economically. It was therefore AGI's belief that remediation of
the soil was near to completion and that a confirmation boring was justified. This
report presents the results of the confirmation boring and a health risk assessment is
included which recommends that no further action is warrented.
2.10 BACKGROUND
The site, known as Pence Petroleum Company, is located at 901 E. Truxtun Avenue,
on the southeast comer of East Truxtun and Beale Avenues in Bakersfield, California
(E>ehibit1). The property parcel number is APN 017-160-07-00-0.
The property is currently unoccupied and was formerly operated as Pence Automated
Fuels by the Pence Petroleum Company. Prior to 1986, the site was owned by Davies
Oil, Bakersfield, California, and was used as an automated cardlock fueling station.
2
·
·
·
Exhibit 2 shows the former locations of the site facilities, as well as the former borings
and existing wells.
Positioned to the south-southeast of downtown Bakersfield, land use surrounding the
site is varied in nature ranging from Light and Service Industrial to High Residential as
indicated by the Metropolitan Bakersfield 2010 General Plan - East Map (3-7-90,
updated 10-14091). On three sides (north, west, and south) the site abuts public
streets (East Truxtun, Beale, and East 18th Street, respectively). To the east, at 985
E~ast Truxtun, is Signet Hardware, Inc. Residential areas lie to the south and southeast
of the site.
3.0 PROJECT HISTORY
In 1986 Pence Petroleum purchased the site from Davies Oil of Bakersfield. On
November 1, 1989, two (2) 6,000-gallon underground gasoline storage tanks, one (1)
10,000-gallon underground gasoline storage tank, one dispenser island and
associated product lines were removed from Pence Petroleum's Automated Fuels
Card lock. Soil samples were collected from 2 and 6 feet beneath the former tanks at
the time of their removal. Table 1 summarizes the results of the laboratory analyses of
the soil samples reported in the Associated Soils Analysis, Inc., Site Assessment
Study of December 28, 1990, on file with the County.
.sAMPLE LOCATION
TABLE 1
Summary of Laboratory Analyses
Tanks and Fuel Island Removal
November 1, 1989
(Soil in ppm)
Benzene Toluene Xylenes Ethyl-Benzene IfI::Ugl
0.28 4.17 42.98 5.20 534.09
~ 0.38 8.51 0.84 127.88
~ t>I) 0.84 0.09 47.60
f<l) NO 0.24 NO 27.90
23.81 350.69 888.24 88.56 4550.10
58.81 588.24 1543.82 213.32 8843.63
f<l) NO ~ NO NO
NO NO 0.72 0.05 31.52
2.40 48.95 222.26 14.10 1719.31
10.63 136.03 630.24 53.35 3491.08
~ 0.10 0.33 0.02 6.93
~ 0.03 0.16 NO NO
ND ND 0.11 NO 11.85
NO NO f<l) NO NO
f<l) ND f<l) NO NO
NO 0.54 2.32 0.26 65.55
P1-2'
P2-6'
P3-2'
P4-6'
P5-2'
P6-6'
P7-2'
P8-6'
P9-2'
P10-6'
P11-2'
P12-6'
P13-2'
P14-6'
P15-2'
P16-6'
TEST METHOD:
Minimum
Reporting Levels:
NO
TPH as gasoline by DHS LUFT Method 8015mand BTEX by EPA Method 8020
BTEX 0.03 uglg
TPH 5.0 ug/g
Non-Detected
3
. The laboratory results indicated that the soil was impacted with petroleum fuel, with the
highest concentrations of petroleum constituents detected at the eastern ends of the
former tanks. Based upon these results, on March 2, 1990, the County requested a
site characterization to assess the extent of impacted soil.
Subsequent to the request, Associated Soils Analysis Inc. (ASA) advanced four soil
borings to a maximum depth of 120 feet below surface grade (bsg). Boring B-3 was
advanced in the vicinity of the former product line, believed to have originated the
release, and detected a maximum concentration of total petroleum hydrocarbons as
gasoline (TPHg) of 24,000 mg/kg at a depth of 50 feet (bsg). B-3 was terminated at a
depth of 80 feet (bsg) with TPHg concentrations of 4,700 mg/kg. Boring B-3A,
advanced ten feet to the west of B-3, detected various concentrations of TPHg ranging
between non detect to 0.62 between a depth of 90 to 120 feet (bsg). Chemical
analyses of these borings are summarized in Table 2 and reported in the Associated
Soils Analysis, Inc., Site Assessment Study of December 28, 1990, on file with the
County.
TABLE 2
Laboratory Resuhs of Soils-Associated Soils Analysis Inc. Investigation
July 9 & 10 and November 6 and 7,1990
Ðsu.ing Dimh Benzene Toluene Ethvlbenzene ~ :œl:i
82 11 NO NO NO NO NO
. 82 16 NO NO NO NO NO
82 26 NO NO NO NO NO
82 36 0.013 0.028 NO 0.0178 NO
B2 51 0.29 0.49 0.030 0.179 5.2
B3 11 3.1 49 13 184 1800
B3 31 21 340 78 480 4200
E33 51 370 2000 400 2430 24000
E33 71 340 1600 350 12080 18000
E33 81 44 370 97 600 4700
B3A 90 0.061 0.006 0.069 0.022 0.54
B3A 95 0.073 0.062 0.38 0.31 2.2
B3A 100 0.008 0.006 0.023 0.018 NO
B3A 105 0.032 0.32 0.17 0.16 1.3
B3A 110 7.0 NO 11 NO NO
B3A 115 0.01 0.01 0.042 0.05 0.62
B3A 120 0.041 0.052 0.28 0.27 2
B4 75 0.078 0.009 NO 0.023 NO
B4 85 0.18 0.19 0.025 0.057 0.82
B4 95 0.38 0.05 0.22 0.18 2.0
B4 105 0.3 0.35 0.13 0.11 1.5
B4 110 NO ND ND NO NO
B4 115 NO ND NO NO NO
B4 120 NO NO NO NO NO
All wesuhs in milligrams per kilogram (ppm)
ND = Hot.l281BcBd
. 4
·
The Phase I assessment work performed by ASA did not delineate the vertical limit of
hydrocarbon impacted soil beneath the probable product line release, nor was the
study able to define the lateral limits of the plume towards the north, east, or south of
tht9 site. The County requested an additional investigation to assess the lateral and
vertical extent of impacted soil.
In August, 1991 AquaGeosciences, Inc. (AGI) advanced four borings in compliance
with the County's request and completed the borings as vapor extraction/inlet wells.
The borings were advanced to varying depths ranging between 40 to 105 feet (bsg).
Table 3 summarizes the laboratory analyses of select soil samples collected from the
soil borings. The laboratory reporting forms are included in Appendix A.
IäbILa
Laboratory Results of Soils-AquaGeosciences Inc. Investigation
August 21 through 30, 1991
Bg1iDg Dig1h Benzene Toluene Ethylbenzene ~ :œti
VI-1 25 183.750 421.220 82.1 05 984.220 15000
VI-1 40 73.505 168.210 31.215 492.015 6625
V/-1 55 91.875 210.000 42.310 615.010 7420
"1-1 70 61.250 140.000 27.010 322.975 5105
VE-1 65 200.335 505.075 92.015 1105.125 17220
· VE-1 85 147.310 323.015 52.710 779.875 12910
VE-1 100 0.995 1.210 0.275 4.225 125
VE-1 105 N) Il) N) N) NO
VE-2 35 0.335 1.010 0.105 2.220 120
VE-2 50 12.220 28.885 5.500 103.775 1850
VE-2 60 2.210 9.055 0.875 12.150 375
VE-2 80 N) N) N) NO 30
VE-3 10 NO NO NO 0.105 80
VE-3 15 1.115 20.210 0.725 9.990 320
VE-3 20 11.775 26.210 3.330 88.845 1250
VE-3 30 17.200 50.270 7.710 161.075 1825
All results in milligrams per kilogram
ND = Hot.QeII9cmd
Elevated concentrations of TPHg were encountered to a depth of approximately 100
feet (bsg) in boring VE-1. The extraction well borings were positioned within the
vicinity of highest concentrations of soil contamination and completed with 30 to 40
feet of screen over intervals selected on the basis of field screening results to initiate a
soil vapor extraction remediation program. An internal combustion engine was
manifolded to the extraction wells being used to extract and destroy the hydrocarbons
contained i.n the soil vapor.
·
5
.
.
.
AGI recommended the installation of the additional air/vapor inlet wells to enhance the
recovery of soil vapors. On October 13 and 14, 1993, AGI advanced three borings and
completed the borings as vapor inlet wells. The analytical results are listed below in
Table 4 with lab results in Appendix B. These inlet wells were designed to sweep
contaminates toward the existing vapor extraction wells. Exhibit 3, 4, and 5 show
aerial extent of the plume and cross-sectional views.
¡¡¡¡¡¡¡¡¡j~¡jj¡j¡~¡¡¡¡¡¡~¡¡¡¡¡j~jjj~¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡j¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡j¡j¡jI¡¡¡¡¡¡¡¡¡¡¡j¡¡¡j¡j¡j¡j¡¡¡¡¡¡I¡¡¡¡¡¡¡¡¡¡¡¡~¡~¡~¡¡¡¡¡j¡¡¡¡¡¡¡j¡j¡jII~ TABLE 4~::::::::::::¡::::~~:~~:~:::::::::::::::::::::::::::::::::::~~~~:~::::::::::::::::::::::::::~:~~~~~~~::~:::~:::::::::::::::::::::::::::::::::::::::::::::I:::~~:~::::::::::::I::::::::::~::~~~:::::::::::::::::::::::I
SUMMARY OF LABORATORY ANALYSIS
OF SOIL SAMPLES FROM SOILS INVESTIGATION*
I:::~:~:::::::::::rr:::::::::::IIII:~:::::::r::::::::::::::::::::::::::r:!:::::::::::::rr:i¥~%::;:':::::I::~:::;::::::~~:I~::~:i::I:~::;:;:~:::::::::::::::::::::I:::::~:~~~~:::::::::¡r:::::::::~:~:~~:::::::::::::::::::::::::::::r::::::::::::::::::r::::::::::~:::::::r:::I:I::::r::::::~:::~:::::::¡r::~~
Ethvl Total
Barina Samcle Decth(ft) Benzene Toluene Benzene Xvlene TPH (Gas
V I -4 V - 4 - 3 5 3 6 - 3 6 5 ND NO NO ND 3 1
V - 4 - 4 5 4 6 - 4 6 5 0 1 2 0 53 0 .32 1 .0 2 0 0
V - 4 - 5 0 5 1 - 5 1 5 ND NO NO NO NO
V - 4 - 6 0 6 1 - 6 1 5 0 78 2 .0 NO 4 .3 1 0 0 0
V - 4 - 6 5 6 6 - 6 6 5 ND NO NO NO NO
V - 4 - 7 0 7 1 - 7 1 5 0 .023 0 02 2 NO 0 .02 1 0 7
V - 4 - 8 5 8 6 - 8 6 5 NO NO ND NO NO
V - 4 - 9 5 9 6 - 9 6 5 NO NO ND NO NO
V I - 5 V - 5 - 1 5 1 6 - 1 6 5 ND 0 33 0 74 3 9 8 1 0
V - 5 - 2 0 2 1 - 2 1 . 5 NO 2 .3 3 .2 9 .5 9 1 0
V - 5 - 3 0 3 1 - 3 1 5 0 .2 3 .7 2 .5 1 1 1 2 0 0
V - 5 - 4 0 4 1 - 4 1 5 ND 1 0 NO 2 2 5 2 0 0
V I - 6 V - 6 - 2 5 2 6 - 2 6 5 NO NO NO NO ND
V - 6 - 3 5 3 6 - 3 6 5 NO ND NO ND NO
V - 6 - 4 0 4 1 - 4 1 5 ND NO ND ND 1 8
V - 6 - 4 5 4 6 - 4 6 5 NO NO NO 0 0 1 0 .5
V - 6 - 5 0 5 1 - 5 1 5 NO ND NO NO NO
V - 6 - 5 5 5 6 - 5 6 5 NO 0 00 9 NO 0 0 1 5 3 9
V - 6 - 7 0 7 1 - 7 1 . 5 NO NO NO ND ND
V - 6 - 80 8 1 - 8 1 5 ND NO NO NO ND
:.:.:.:.:.:.:.:.:.:.:.:.;.:.:.:.:.:.:.:.:.:.:.:.:.: :::::::::;:;:::::;:::::::::::::::::::;:::::::: .;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.;.:.:.:.:.:.:.;.:.;. .......................... ::;:;:;:;:::;:;:::::;:::::::::::::::::;:::::;:::::::; rttttitrjjjjtrl~{ :;:;::::::::::::::::::::::::::::::::::::::::::::::::: IItI¡trtIIit~~tI
...........................
: ~: ~: ~:~:~:~: ¡:¡ :¡: ¡:¡:¡: ~:¡:1 :~:~:~:¡: ¡: ¡: ¡:¡:r ....................... ..................................................... ~¡¡¡¡¡¡¡¡¡¡¡¡~¡¡t~~tt¡~~~tttt~1~
..................................................... ::::::::::::::::::::;:::::::::::::::::::::::::::::::: .....................................................
:::::::::::::::::::::::::::::::::::::::::::::: ...........................
........................... ..........................
....................... .......................... ...........................
........................... ..........................
* Results reoorted in ma/ka Iccm)
In the months of January and February of 1994, the VES began to use supplemental
propane almost exclusively. This indicated that the vapors being drawn from the
ground no longer contained concentrations sufficient to run the machine efficiently or
economically. It was therefore AGI's belief that remediation of the soil was near to
completion and that confirmation boring was justified.
6
.'
.
.
4.0 FIELD ACTIVITIES
AGI drilled one (1) confirmatory boring in the middle of the pre-existing plume to show
that soil has been remediated to resonable levels given the depth to groundwater at
this site. Boring C-1 was advanced to 105 feet at the location shown on Exhibit 2.
4.1 BORING METHODS
One (1) soil boring, C-1, was advanced using aCME 75 rig with a six inch diameter
hollow stem continuous flight auger in accordance with ASTM Method D-1452-80 for
soil investigations and sampling by auger borings. The augers were steam cleaned
prior to advancing the boring. The lithology and other pertinent data was recorded on
field boring logs in accordance with Method D 2488-84 for visual description and
identification of soils. Soil generated during the drilling process was placed on
Visquene at the site while waiting for analytical confirmation. Analytical results
indicate the cuttings were impacted so this soil will be remediated on site using
aeration and/or bioremediation. A cement slurry was used to abandon the borehole.
4.2 SOILSAMPLlNG
Soil samples were collected through the auger in 2-inch diameter brass sleeves
driven in a split spoon sampler by a 140 pound hammer with a 30-inch drop in
accordance with ASTM Methods D1586-84 for split-barrel sampling of soil and D1587-
83 for thin-walled tube sampling of soils. The brass sleeves and sampler were
washed in Alconox prior to each use.
Soil samples were taken at depths of 5 foot intervals to a total depth of 105 feet. The
blow counts, recovery, and lithology were recorded on field logs. Lithology was then
described by an experienced environmental geologist under the direct supervision of
a California Registered Geologist in accordance with ASTM procedure D2488-84
(Standard Practice for Description and Identification of Soils). One brass sleeve with
soil from each interval was sealed with teflon tape, capped, secured with duct tape,
labelled in accordance with EPA protocols, recorded on a Chain-of-Custody form,
placed in a cooler at 40 centigrade, and transported to Halcyon Laboratories, a
California Certified Laboratory with the Chain-of-Custody for the specified analyses.
Appendix C contains the boring log forC-1.
4.3 FIELD SCREENING OF SOIL SAMPLES
Soil samples were collected using three (3) six-inch brass tubes installed inside a
split-spoon sampler. The middle sample tube was immediately sealed and prepared
for transport and stored in an iced cooler upon collection. The bottom tube was used
for lithologic description and the top tube was used for field screening. The material
7
·
·
·
frc)m the top tube was placed in a mason jar to approximately 50 percent capacity,
shaken, and stored for a period of 15 minutes. A standard headspace reading will be
collected at this time and noted on the boring log. Field screening was accomplished
using a Photo-ionization detector (PID).
4.4 SOIL ANALYSIS
Twenty two (22) confirmation soil samples were sent to Halcyon Laboraties, a
California State Certified Laboratory in accordance with state guidelines and EPA
protocols. All samples were analyzed for Total Petroleum Hydrocarbons (TPH) as
gasoline and volatile aromatics (BTEX) using EPA Method 8015 modified arid 8020,
respectively.
5.0 SITE GEOLOGY
The soil borings penetrated a sequence of uncons·olidated sediments to a maximum
depth of 110 feet (bsg). The unconsolidated soils are Pleistocene non-marine flood-
plain fan deposits (California Division of Mines and Geology, 1964'). The section
consists of alternating dense to very dense silty sands and sandy silts with
interbedded clay and poorly graded sand. The soils moisture content varied between
dry to moist, predominately slightly moist.
No free standing ground water was encountered during the October 1993 field
investigation. Published data (Kern County Water Agency, 19912 ) show that the
average depth to groundwater beneath the site approaches 200 to 250 feet (bsg) and
has a gradient to the south and southwest.
6;0 FINDINGS
On May 18, 1994, AGI advanced a confirmation boring, desingated as C-1 (Exhibit 2),
to 110' below surface grade. ACME 75 hollow stem auger drilling rig operated by
Soils Engineering Inc. was used. The rig was positioned to the south of the VES unit,
approximately 4 feet from VE-3. Although field indicators of hydrocarbons (petroleum
odor and photo-ionization detector readings of cuttings) appeared high, lab analyses
indicate that the hydrocarbons concentrations present in the soil in the central area of
the plume have been greatly diminished. Table (5) includes analytical results for C-1.
Appendix D contain laboratory reports with chain of custodies.
,~IIOml8 UIV1Slon 01 Mines ana ü8OlogY. '964, Geologic Map of California, Bakersfield Sheet.
2 Kern County Water Agency, 1991, Water Supply Report
8
.
.
.
¡IIIII:::::::I:::::::¡¡¡:¡¡¡::::I:::::¡¡¡¡¡¡¡::¡:::::::::¡¡¡IIIIII¡¡¡¡¡¡¡¡¡¡¡¡¡¡:¡:¡¡¡¡¡¡¡:::¡:lillli¡:¡¡¡¡¡¡¡:¡:¡¡:¡:IIII¡iIIIl¡¡¡¡¡¡:¡¡¡¡¡¡¡¡¡¡¡¡IIJ.III::::::I¡:¡:¡:¡¡¡¡:III:::::::lIlilll::
5 I N) NO NO NO NO
1 0 I t.¡) 0 0 0 5 NO 0 0 3 3 1 2
.
1 5 I 0 0 6 0 6 3 0 6 8 2 4 1 8 0 0
2 0 I t.¡) 1 5 1 5 9 5 2 0
2 5 I 0 4 3 3 2 5 1 4 3 0 0 0
· .
3 0 , NO 2 5 1 7 9 3 1 2 0 0
·
3 5 , NO 1 5 NO 1 0 6 9 0
4 0 , NO 0 5 NO 7 8 4 1 0
·
4 5 , 0 8 2 1 1 2 7 4 5 0
5 0 I 1 2 9 2 6 1 2 1 7 0 0
5 5 I 1 5 3 1 2 9 1 1 2 3 0 0
6 0 , 1 1 8 2 4 3 1 1 1 0 0
·
6 5 I NO NO NO 1 1 0 0
7 0 I 0 5 1 3 0 8 3 8 3 8 0
7 5 I 0 5 1 2 0 7 2 3 1 3 0
·
8 0 I 0 2 0 5 0 2 1 5 8 0
. .
8 5 , 0 4 1 5 1 4 8 2 1 9 0 0
·
9 0 I 0 4 1 3 0 8 5 6 1 2 0 0
·
9 5 I 0 2 1 0 6 4 1 6 5 0
1 0 0 I NO NO NO 0 5 4 0
1 0 5 I NO 0 0 0 5 NO 0 0 1 NO
.
1 1 0 , 0 0 0 5 0 0 2 0 0 1 0 0 8 6 5
ANALYTICAL M E HTOD BTEX - EPA M ETHOD 8020. TPH (G) - 801 5M
M I N I M UM 0 ETECTION LI M IT BTEX - 0.5 mg/Ko: TPH (G) - 50 maiKo
ma/Ka - milliarsm œr Ki,loaram (Darts Der mill io n - ppm)
NO - None Detected .
sm
SIYJ
mL
tY)J-
YY}L
¿¿/ l
;~
7.0 DISCUSSION AND CONCLUSIONS
Interpretation and risk analyses of the data collected are presented in the next
sections.
7.1 Groundwater Risks
The primary objective of the under ground tank regulations is protection of
groundwater resources. The State of California through the Department of Health
Services and the State Water Resources Control Board developed the Leaking
Underground Fuel Tank (LUFT) Manual3 to provide guidelines to regulatory agencies
9
.
.
.
and other interested parties concerned with investigation, risk assessment and
cleanup of underground tank related leaks. That document presents a leaching
potential analysis for gasoline which evaluates those site characteristics which
iniluence the downward migration of the fuel componets BTEX and TPH(gasoline)
sUlchas; depth to groundwater, precipitation, soil lithology and the presence of BTEX
and TPH values which can be left in place without threatening groundwater. Using this
approach the Remediated site at Pence Petroloeum using data collected during the
confirmation boring was determined to fall into the low leaching potential category,
however, several samples from the confirmation boring exceed the stipulated
maximum allowable TPH(gasoline) and BIT/E/X levels which for the low category are
1000 ppm and 1/50/50/50 ppm, respectively (Table 6).
For those sites with a value above allowable levels, further analysis using the General
Risk Appraisal is recommended. This is a more sophisticated approach adapted from
two computer simulations to estimate the concentrations of BTEX components which
can be left in place without endangering groundwater. This method also considers the
physical characteristics of the site as well as environmental fate and chemistry data for
BTEX. The first step is use of a questionaire to determine whether site conditions do
not present a greater risk to groundwater than those on which the models are based.
A environmental fate worksheet is then completed for each of the BTEX componets
(Table 8, 9, 10, & 11). The concentration detected in samples at each successive five
foot interval is added to the sum of the previous concentrations for the total vertical
distance of the plume. The sum at each interval is compared to Acceptable
Cumulative Contamination Levels provided in Appendix E for each aromatic
componet to determine if remediation was successful. These tables show distance to
groundwater from the contaminated mass on the verical axis and annual rainfall on the
horizontal axis.
Use of the General Risk Appraisal for Pence Petroleum appears to be suitable based
on the preponderance of "NO" answers on the checklist (Table 7). Worksheets for the
confirmation boring were then completed to evaluate residual risks to groundwater.
Note that the depth to groundwater used in the an lyses was 200 feet, a value taken
from the Kern County Water Agency.
A complete profile of distribution of gasoline hydrocarbons in the center of the
impacted soil mass was provided by samples collected during the drilling of
Confirmation Boring (C-1). Samples were collected from 5 to 110 feet below surface
grade. At no depth interval were cumulative concentrations of any BTEX components
found to be in excess of Acceptable Levels (Tables 8, 9, 10, & 11). It can be concluded
then, that the remaining hydrocarbon concentrations still present do not constitute a
threat to groundwater resources.
10
·
·
·
7.2 Risks to the Surface Environment
Risks to people and the surface environment from vapors migrating upward from the
contaminated soil masses are also considered to be very low. The affected area at the
former tank location will be overlain by asphalt paving used for parking space for the
business to the east. If left in this condition, little to no risk to human receptors would
exist. The following Risk Assessment for the Surface Environment is performed in the
unlikely event that a building would be placed on this vacant area.
An effort has been made to evaluate health risks due to exposure to benzene
volatilizing from the soil and entering a ficticious building from the plume. Benzene
was used because of its high volatility and known carcinogenic properties, it is
considered to pose the greatest health risks. The highest concentration reported from
the confirmation boring C-1 was 1.5 ppm which was detected at a depth of 55 feet.
This value was used in the calculations. Laboratory determined values for soil
properties required for the analysis are not available. Assuming a sandy
unconsolidated sediment type with a low moisture content, the following parameters
were estimated:
Porosity .35
Bulk Density 2.0
Moisture Content .15
The approach used for the risk assessment is based in part on the methods and logic
presented in the California Site Mitigation Tree Manual4 and a report by Chemrisk5
submitted to the Orange County Health Care Agency and made available as an
example of a state of the art risk assessment. The steps followed and conclusions of
this analysis are outlined below. A more complete discussion and the calculations are
included in Appendix F.
The first step in the risk evaluation process is the calculation of the steady state flux of
benzene through the soil matrix assuming a non-diminishing source at some distance
below the ground level. This determination requires a knowledge of benzene's
coefficients of diffusion in air and through the soil as well as the vapor phase
concentration of the compound at the source.
Knowing the vapor phase flux through the soil, the volume of air within the building, a
ventilation rate and assuming a leakage rate through a structure's foundation, a
benzene vapor concentration within a building can be predicted. Then, taking a worst
case scenario of a person working their entire 45 year occupational lifetime at the
business, a lifetime average daily dose (LADD) received can be derived. .
Values of indoor vapor concentrations and LADDs can be compared to regulatory
guidelines to evaluate degree of exposure and risks. In this instance, the indoor
1 1
concentration of benzene was calculated to be 2.1 X 10-8 mg/m3. The Department of
Health Services Applied Action Level for benzene in ambient air is 3.2 X 10-3 mg/m3.
The air concentratio~ for lifetime cancer risk due to benzene exposure 6.6 X 10-4
mg/m3 can also be used. Based on an individual who worked at the site for 45 years, a
LADD of 1.0 X 10-9 mg/kg-day was calculated. This result can be compared to 3.0 X
10-4 mg/kg-day which is considered to result in a 1 and 100,000 excess cancer risk
under DHS Proposition 65 guidelines. In all cases, calculated values are well below
established guidelines.
·
The potential for carcinogenic health effects can also be evaluated by multiplying the
lifetime benzene exposure (inhaled volume times concentration) with an "adjusted
potency factor" (USEPA)6 to derive a carcinogenic risk associated with a specific
exposure to benzene. In general, regulatory agencies have found that a risk in excess
of 1 and 1 million is acceptable. In some instances risks of 1 in 100,000 are used in
setting environmental standards. At Pence Petroleum a risk of 3.86 X 10-11 was
derived, well below the 1in 1,000,000 criteria.
In conclusion, based on this risk assessment, no significant health hazards related to
the gasoline contamination at the Pence Petroleum site are believed to exist. The
contamination does not encroach on any proximal building and the site will be sealed
at the surface with asphalt paving.
· 8.0
1.
2.
3.
4.
5.
6.
7.
8.
·
REFERENCES
Smith, A. - complier. Geologic Map of California, Bakersfield Sheet, Ståte of
California, Department of Conservation, Division of Mines and Geology, 1964
Clark, Thomas N. - General Manager. Kern County Water Agency Water Supply
Report 1990, September 1991
State of California Leaking Underground Fuel Task Force, Leaking
Underground Fuel Tank Manual: Guidelines For Site Assessment, Cleanup and
Underground Storage Tank Closure, October 1989
State of California Department of Health Services Toxic Substances Control
Division, Alternative Technology and Policy Development Section. The
California Decision Tree Manual, May 1966
Chemrisk. Screening Level Risk Assessment for Benzene, Toluene, Xylene and
Ethylbenzene in Indoor Air at the Former Shell Gasoline Station at Cost Mesa,
September 19, 1989
U.S. Environmental Protection Agency, Update of the Risk Characterization
Tables in SPHEM (Toxicity Data for Potential Carcinogenic Effects and Non-
Carcinogenic Effects), 1988
Thibodeaux, L.J. and Hwang, S. T. Landfarming of Petroleum Wastes-
Modeling the Air Emission Problem: Environ. Prog., 1982
Millington, N. J. and Quirk, J. M. Permeability of Porous Solids: Trans. Faraday
Soc. 57, pg. 1200-1207, 1961
12
·
·
·
9. Fuller, E. N., Schettler, P. D., and Giddings, J. C. A New Method for Prediction of
Binary Gas Phase Diffusion Coefficients: Ind. Eng. Chern. 59, pg. 19-27, 1966
10. Grimsrud, D.T., Sonderegger, and Sherman, R.G. A Frame work of a
Construction Quality Survey for Air Leakage in Residential Buildings:
Proceedings of Thermal Performance of External Envelopes of Buildings, pg.
442-452, 1983
11. Fisk, W. J., Spencer, R. K., Grimsrud, D. T., Offerman, F. J., and Sextro, R. Indoor
Air Quality Control Techniques: Radon, Formaldehyde, Combustion Products:
Pollution Tech. Review No. 44: Noyes Data Corp, 198
9.0 RECOMMENDATIONS
Based on the information obtained and anlyzed from confirmation boring C-1, risks to
groundwater resources and public health are considered to be extremely low. No
further assessment or remediation of the site is deemed necessary and site closure is
recommended.
10.0 LIMITATIONS
AquaGeosciences, Inc. performed this investigation in accordance with generally
accepted standards of care which exists in California at this time. It should be
recognized that definition and evaluation of geologic conditions is a difficult and
inexact science. Judgments leading to conclusions and recommendations are
generally made with limited knowledge of the subsurface conditions present. No
warranty ex·pressed of implied, is made.
13
..
TABLES
.
.
Leachirig"Põtë~tlãl-"Anêï1y-sis-- -for -Gasol in-e-·ánd Diesel
Using Total Petroleum Hydrocarbons(TPH)
and Benzene, Toluene, Xylene and Ethylbenzene (BTX&E)
The following table was designed to permit estimating the
concentrations of TPH and BTX&E that can be left in place without
threatening ground water. Three levels of TPH and BTX&E
concentrations were derived (from modeling) for sites which fall into
categctries of low, medium or high leaching potential. To use the
table, find the appropriate description for each of the features.
Score each feature using the weighting system shown at the top of
each 'column. Sum the points for each column and total them. Match
the total points to the allowable BTX&E and TPH levels.
.
S SCORE S SCORE S SCORE
SITE C 10 PTS' C 9 PTS C 5 PTS
0 IF CON- 0 IF CON- 0 IF CON-
FEATURE R CITION R CITION R CITION
E IS MET E IS MET E IS MET
Minimum Depth to >100 51-100 25-50\.1
GroundWater from the 10
Soil Sample (feet)
Fractures in subsurface 10 None Unknown Present
(applies to foothills
or mountain areas)
Average Annual' 10 <10 10-25 26-40~
Precipitation (inches) - .
I
Man·-made conduits which None Unknown Present
increase vertical 10
migration of leachate
unique site features: None At least More
r~charge area, coarse 9 one thàn one
soil, nearby wells, etc
COLUMN TOTALS~TOTAL PTS 40 + 9 . + 0 = IE]
,
RANGE OF TOTAL POINTS 49pts or more 41 - 48 pts 40pts or less
MAXIMUM ALLOWABLE 1/50/50/50' .3/.3/1/1 NA\1.
B/T/X/E LEVELS (PPM)
',."
MAXIMUM GASOLINE 1000 100 10
ALLOWABLE TPH :
LEVELS (PPM) C,IESEL 10000 1000 100
AQuaGeosciences. Inc.
1701 Westwind Driw Suite 101
Bakersfie~d, California 93301
Telephonle: (805) 328-0962
Fax 328-1129
]hm<e<e IPœanllœwW}
KERN COUNTY. CALIFORNIA
TABLE
6
Leaching Potential Analysis
. .
.. .,..t\:"'....;.ì. ..., ..... ,.~,(\..I.'~I',ó .
"';rJ1:'
,
GENERAL RISK APPRAISAL
FOR PROTECTION OF WATER QUALITY:
APPLICABILITY CHECKLIST YES NO
1. Is the site in a mountainous area? (shaded moist X
areas &/or areas with rocky subsurface conditiòns)
2. Is the site in an area that could collect surface
intercept water "M'
runoff or from a sou~ce other than
the natural precipitation? ,'r X
3. Does the areal extent of soil contamination ..
exceed 1000 feetZ? X
4. Do the concentrations of fuel constituents in any
soil samples exceed the following amounts: X
benzene - 100 ppm, toluene - 80 ppm, xylene - 40
, J
ppm, ethylbenzene - 40 ppm?
5. Are there anyrec6rds'or evidence; of man-made or X
natural objects whichçould provide a conduit, for
vertical migration of leachate? .
6. Do any boring or excavation logs show the presence
. of fractures, joints or faults that could act as a X
conduit for vertical migration of leachate?
I
7. Do any boring logs show that contaminated so~l X
could be wit~in 5 ft. of highest ground water?
8. Do any boring logs show the presence of a layer of
material, 5 ft. thick or more, which is more than X
75% sand and/or gravel?
1.<4-.. .
AquaGeosciences. Inc.
1701 Westwind Drive Suite 101
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax 328-1129
1Pœm<tœ IPœ~llœ1JJ1rm
KERN COUNTY, CALIFORNIA
General Risk Appraisal
TABLE
7
·
It
DIST,V4C;E FRat
SURfACE TO
G"OUÞd> "'A'JER
~
.20.!)..ft
!
·
..
. .
TABLE 2'1
ENVIRONMENTAL fATE WORKSHEET 'OR Rpn 7.pn p ..C fUEL CONST I WENT)
C
DISTANCE FRat
SAMPLE TO
SURfACE
2__ f t
..
5ftl
"~~.ft
..
5ftl
. 15 _'t
..
5ft
20 f
._t
..
Table 8 I
Pence Petroleum
D
DISTANCE FRat
= SAMPLE TO
GROUND "'ATER
..
SAMPLE 1 195ft
SAMPLE 2 ~!.~.ft
SAMPLE 3 185 ft
SAMPLE 4 180 ft
SAMPLE 5 175ft
....
SAMPLE 6 170 ft
SAMPLE 7 165 .
_'t
5ft I
25
._ft
...
5ft ." .
. 30
._ft
.. . .:.<' .
. 5ft li:~·. : ::: .
. ."'--,-ft
. .-:-:......:': '.:. :.....
5ft !~(l:ft ··:SAM~LE 8 .' 6 O. ft
..
5ftl
45
"'_ft
.. ...
.5ft :. ......:.. ..:.'
.: 5·0 .::
..",_ft
::::: .. ."..... ..
~ftr5k·
.,,_ft
SAMPLE 9 155 ft
SAMPLE 10 150 ft
145
SAMPLE 11 - ft
:>:::':..::0.-:.' .
.. .... ..:::·~:t~ :~·:g.??:: :.'::.\.. ... 40..:
D.N"";;.' ..~m¡Wæ!i*t¡i;!.~¡tt¡¡;¡;.;Eft;j.....;¿. .ft
"
E
CUMULA TI VI:.
CONTAMINATION
LEVElS C.C.l.
SOIL SURFACE
SAMPLE 1ND .H.fll
= C.C.l. 1~~ ~..
C.C.t. 1
+ SAMPLE ~~_..._.rJ ··'"
= C.C.l. 2=.-
C.C.L. 2 .
+ SAMPLE 30 .!..9_~ r, Oil
= C.C.l. 3Q... 0.6 .
C.C.t. 3
+ SAMPLE ~-º _ lpll
= C.C.L. "0..06....
C.C.L. 4 .
+ SAMPLE 5Q.~4__ ~ pa
; C.C.l. SCl-A6___
C.C.l. 5
+. SAMPLE ~.!?~_.PI~II
= C.C.l.. t.() _46.. __
C.C.L. 6
. SAMPLE ~-º_ppu
= C.C.L. 7(L4.6.__
C.C.l. 7
+ SAMPLE ~D __WIn
= C.C.l. 8.~__
C.C.t. 8
+ SAMPLE 9 0 . 8 ppm
= C.C.t. 91. 2ã
C.C.L. 9
+SAMPLE 101. 0 ppm
=C.C.l. 10 2. 2ã
C.C.l. 10
+SAMPLE 11 1 . 5 pPI11
=C.C.l. 111 76
'. C.C.L. 11
_ +SAMPLE 121.0 pPI11
=C.C.l. 124 ~.? 6
J- A
r: AVERAGE ANNUAL
PRECIPITATION
I ... r- -:~:-_-:=:I_~CHE~__S
I 1// / / / / / / I I I I
i / I I 1// / / I / I I I
f G
ACCEPrAULF.
en... AM I HAl ION
LEVelS
-.--..-
_!Q.Qº-
..1_0.Q º___
...1.9Q.Q_
1000
- ----..--.-..
1000. .
1000
1000
1000
1000·
1000
CLEANUP?
YES If E .. F
NOIFE!!f
__.ye!. X..no
__yes X-no
ye" X-no
__yl!.... X _no
_. ..ye~ K...no
_yes K...no
yes Lno
_yes Lna
_yes Lno
_yes Lr,o
yes ~no
i~~~~~~;~~'~~ ~·~·:"~.-~k~~·~·~~~.~~~~~~.: ~-.~:,~~~.::-.:~-~
·
ft ø feet ppm = parts per million
· NOTI:: CONCENTRATIONS fOR AMY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppn FOR BENZENE, 80ppm FOR TOLUENE, 40ppø FOR XYlENE
AND 40ppn fOR ETHYLBENZENE IN ORDER TO BE USED WITH THE GENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS FOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPLES "'HICH HAVE CONCENTRATIONS LESS THAN THE DETECTION LIMIT.
-
42
TABlE 2·1
ENVIRONMENTAl FATE WORKSHEET FOIt Benzene _.(fUEl CONSTITUENT)
Con t .
I
Table 8 Coot. i
Pence Petroleum
.1- A
r AVERAGE ANNUAl
I,.J ~RE;_:PI~~~~~~_S
I I I I I I I I I I I I I I
i I I I I I I I I I I I I I
f G
.
It
C
D
E
CLEANUP?
YES If E .. f
NO If E :5 f
DISTANCE fRC14
SAMPlE TO
SURfACE
D I S.T AHC;E FRC14
$.URiFACE TO
G~OUId) \lA1ER
DISTANCE fRC14
SAMPlE TO
GROOND \lATER
ACCEP r AUl f;
r.ntH AM I NA rI ON
LEVELS
CUHULA T/ VI:.
CONTAMINATION
LEVELS C.C.t..
SOIL SURFACE
.
.
2J:Hl...f t
!
SAMPLE 1 JiID, ,.f' ,fI
= C.C.I.. 1. 4.-76
C.C.I.. 1
+ SAMPLE 2Jl~.5.fJ ··fI
=c.c.1..2_5.26
C.C.l. 2 _
+ SAMPLE] 0...·5. J''''
= c.c.1..3_5.·7·6·
C.C.l. 3
+ SAMPlE 1,.0....-2 ppll
= C.C.I.. ".-5...96H'
C.C.l. I, .
+ SAMPLE s....o......4. w'"
= C.C.I.. '>-6.-3-6--
C.C.l. S
. SAMPLE 6.QJ_Pl~1I
= C.C.l. t'-6..-16-.
C.C.l. 6
+ SAMPlE 7 _Q......2.-.Pµ1I
= C.C.L. 7~~_~_
C.C.I.. 7
+ SAMPLE 8 ND__ppn
= C.C.l. 8.~__
C.C.l. 8
. SAMPLE 9 ~PP"
= C.C.l. 9 G . 9 G
C.C.L. 9
+SAMPLE 100. O~
=C.C.I.. 10 G . 9 G 5
C.C.l. 10
.SAMPLE 11_pp"
=C.C.l. 11
65 it
SAMPLE 1 115tt
SAMPLE 2 .13.Qtt
SAMPlE 3 12Stt
SAMPLE 4 12Ûtt
SAMPLE S 11Stt
....
SAMPLE 6 11O,t
.
SAMPlE 7 10 s,t
ye!> 2L.no
__ .100iL
·
Sftl
·;Z.º--' t
. . ,1QQ.o_
,.._yes Lno
·
Sftl
~e ft
___lO.Q.Q;.
__Yi:" Lno
·
Sft I
~ft
._ __10 O.Q_
__Yl!'" x._no
·
SIt
~ft
.,
Sft .,' .
'~ft
,. ,
Sftk~'··:f'i ·
, ,::.. .',:.':, H' ,
Sft H:, : ,', .:: ",
'~oO ft 'SAMPLE 8 10o,t
__. J.Q.QQ
_. ..yc~. Lnn
.
. __1...0..0.0..
_yes Lno
H
1000
_yes X-no
1000
yes L no
_yes ~no
_yes K-r,o
·
~., :
Sft I
~05 ft
,".'.' , '
, ,Sft ::>',..
, :~10 ft
" ',':::: '" ','," HH,H
Sft r. ,,:::', '
H._ft
:'c,:::.:,. '
, . ./~ift :> 'HH
.. tj{¡¥¡E,:t¡igt'~;¡::;:~:é::' c-!t....
':':'.::::,':::::::::..:::::::::.':::.:-::::::::.:,:,':,':.:::::::::,::,:::::::::::..,::.::/:::::::"-,":,:"
SAMPlE 9 ~ft
90
10 - ft
SAMPLE 11 - ft
100.0
1000
_yes _00
C.C.L. 11
, +SAMPLE 12
'=C.C.l. 12
pPIII
'.. ,_yes. _no
H ,
..
...
, ,
, " -
iJi~ _,:i~~:~_~~.~~:~~~~~,o_~'~~...~=..-..:'.-,;:'-..~,~~~,"':..~.".~..;:~.~.'.~..::~~;;:;=~~--
ft .. feet ppm ,. parts per mi II ion
· NOTE: CONCENTRATIONS FOR ANY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppn FOR BENZENE, 80ppn FOR TOLUE!lE, 1,0pPII FOR X'fLEII£
AND 1,0ppm FOR ETHYLBENZENE IN ORDER TO BE USED WITH THE GENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS FOR CUMULATIVE CONTAMINATION MUST BE AT OR A80VE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPlES WHICH HAVE CONCENTRATIONS LESS THAN THE DETECTION LIMIT.
.
42
-
.
It
o I S.T ¡UlC;E F R<J4
$URfACE TO
G"OUÞiÐ \lA'ER
..
1~~~·~1t
!
....
.
. .
..
TABLE Z-3
FATE wœicSHEET FOR Toluene
r
I
Table 9 !
Pence Petroleum
ENVIRONMENTAL
C
o
E
CUMULATIVE.
CONTAMINATION
LEVElS C.C.l.
SOIL SURFACE
SAMPLE 1J~D.
= C.C.l. 1........,. .
.J>!.'"
C.C.l. 1
+ SAMPLE 2-º.!..OJ~·~1I
= C.C.l. 2-0.00.5
C.C.l. 2 _ .
+ SAMPLE J O.~.º.3r,.n
= C.C.t. 3..0...635
C.C.t. J
+ SAMPLE 4_!.~_5 ppn
= C.C.l. 4.2...135
C.C.l. l, .
+ SAMPLE 5 _3-!.. J. HJI:I
= C.C.l. '>...5...-43.5.
C.C.l. 5
+ SAMPLE 6_~.~.PlJlII
= C.C.l. 1"_7_.9.35..
C.C.l. 6
. SAMPLE 7J;:.~PlJII
= C.C.L. 7 ...9~4..35_
C.C.L. 7
+ SAMPLE 8~~_ppn
= C.C.t. 8.!L..9..35_
C.C.L. 8 2 1
+ SAMPLE 9 . ppm
= C.C.L. 9 12.0.3.5
C.C.l. 9
+SAMPlE 10 2.9 ppm
=C.C.L. 10 1 4 . q 3 6
. C.C.L. 10 3
.SAHPlE 11 . 1 ppm
=c"c.L. 1118.035
>·~Ùt"I:'?:>::· C.C.l. 11
.,,,,2:i¡tJ~,¡·i~;.,:,~E,:2: '14~t .. . . ..:c~~~~ :~~ô 8 .~
.:'::'-::;:":::::::.:'::::::::::'::::::::::::;::.:.;':':.::::::::{':::{:::;::.;.:;:::;:::::::.':;::i.::.:y,:X.:::::.:::
::'::.:"y
DISTANCE FR<J4
SAMPLE TO
SURfACE
DISTANCE FR<J4
SAMPLE TO
GROONO \lATER
..(fUEL CONSTITUENT)
J- A
AVERAGE ANNUAL
r r PRECIPITATION
I···. -=-::-.=-:I~~_S
I I I I I I I I I I I I I I
¡ I I I I I I I I I I I I I
f G
tCCEPIAUlE CLEANUP?
r.(JNrAMINArIOIl YES IF E :> f
LEVELS NO If E ~ f
-- --. .".. -.- -
_ _. yc~
__.no
....
.10. 0..0...- .. _._yes Lno
-1.00.0.- _Yf:~ X-no
.1..0 0 0..__ __yc'., X-.oo
.-100-0- _. ..yc~ LOt)
. _l.Q..O.a._. _yes Lno
1 nn~" yes Lno
1000 _yes X-no
..
IDOL _yes X-no
lnnn _yes X-r.o
1000'
_yes Lno
. ..... ,. ... ... .... .
1-... .. . . .. ..- .. - - . ..
~~~~~~:=:;~:>,~~-~-::~-~~~-=.=:~;~~.<.-~~.~-.-.....~.~..._;;".~.-.'.¿~~:~~.:~~,;~~=:~?
..
L_ft
12.5ft
1000
Lnö
.
ft .. feet ppn = parts per mi 11 ion
.. NOTl:: CONCENTRATIONS FOR ANY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppn FOR BENZENE, 80ppn fOR TOLUENE, 4Dppn FOR XYlENE
AND 40ppm FOR ETHYL BENZENE IN ORDER TO BE USED WITH THE GENERAL RISK APPRAISAL.
THE lAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS FOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPLES WHICH HAVE CONCENTRATIONS lESS THAN THE DETECTION LIMIT.
SAMPLE 1
..
5ftl
"lº-.ft SAMPLE 2 .19 9f t
..
5ftl
"12.._ ft SAMPLE 3 18 51 t
..
Sft I
,,20___ft SAMPLE 4 18~t
"
5ft .
"~ft SAMPLE 5 1 7 Stt
. .
"
5ft ' . ..
"~ft
SAMPLE 6 .. 17~t
.. "
" ..
Sft I . ..
y~fi:
.. ...."..:.:....:.. '..
sftIH::. :. ....
'~ft
SAMPLE 7
16 s,t
..
SAMPLE 8
16(ft
"
Sft
. ~ft SAMPLE 9 15~t
" .
Sft ..·.:·.
,,50 10 15O,t
..." ..:......
SftlH .:.... ..
,,5S.tt SAMPLE 11 14~t
42
. .
,
i.
·
1&
01 STAHC;E fROM
SURfACE TO
G~OOt.iD WA 'JER
..
I ~.~~ -º- it
!
·
TABLE 2-3
ENVIRONMENTAL fATE WORKSHEET fOR Toluene _.(fUEL CONSTITUENT)
Cont.
Table 9 Cont.' .
Pence Petroleum
C
o
E
CUMULATIVE.
CONTAMINATION
LEVElS C.C.I..
SOIL SURfACE
SAMPLE 1.~PH·"1
= C.CoI.. 1.19.~835
C.C.I.. 1
+ SAMPLE 2 1. 3 "pn
= C.C.I.. C:iï:135
C.C.1. Z .
+ SAMPLE 3 1..2 HOII
= C.C.I.. 3.22.:.3.35
J- A
r· AVERAGE ANNUAL
PRECIPI TATlON
I- J -:~:-_-:=-:.I NCHE S
I I I I I I I I I I I I I I
i I I I I I I I I I I I I I
F C
E:CCEPIAUll CLEANUP? I
tON lAMINAr ION YES IF E > f
lEVELS NO IF E ~ f
.. ~OO.o_
__.ye!. X__no
DISTANCE FROM
SAMPLE TO
SURfACE
DISTANCE FROM
SAMPLE TO
GROOND WATER
...lfi.O.Q.
.. __yes x.,..no
..
6LS_ft SAMPLE 1
.13.9t
_ __l.o.o.fi.
__Yl?" Lno
..
5ftl
"1.(L.ft SAMPLE Z .1.3.c, t
..
5 f t I
. "25-.ft SAMPLE 3 .l2:/t
..
5ftl
,,8 <L..f t SAMPLE 4 ~2D t
..
5 ft I .
"ª-2-ft SAMPLE 5 ..l.l.;tt
..
5ft I - .
~ft
....
SAMPLE 6 ~t
C.C.I.. 3
+ SAMPLE 4 0 . 5 ppn
= C.C.I.. (_2:2.835 .__-1.QQ.Q
C.C.I.. 4 5
+ SAMPLE 5_1. _. J'P"
= c.c:1.. '>..ll....3.J.5 .._.lD_OJl.
C.C.I.. 5 1 3
+ SAMPLE 6 . PI~n
= C.c.1.. 6~2?::{)J.:5
C.C.1. 6 1 0
. SAMPLE 7_· PµII
= C.C.1. 7 -,£Q.~6 3_5
C.C.I.. 7 ND
+ SAMPLE 8 ~n
= C.c.l. Sµ:º:L5
C.C.l. 8~0
+ SAMPLE 9 ..
= C.C.l. 9 . 4
C.C.l. 9 0 0?r
+SAMPlE 10 ..
=C.C.I.. 10 26. 6
C.C.1. 10
+SAMPLE 11
=C.C.I.. 11
". .
5ft I:.:'·" . :
. .~fi SAMPLE 1 10:tt
..... ..
sit ····: ....:.
·,,100ft
:.
100ft
C.C.L. 11
. +SAMPLE 12
=C.C.L. 12
SAMPLE 8
..:::......
.. ... . .. .
....... ....... .
...... -.. ..... ....
.. ..... ..... ...
... ..... ...
". .... ,.-.... ...'.......
. .......... .. .... ..
..... ",'" ............ ..... .... -..
.......................................................................:.................................. ...
..............:..... ............................................................;.............:...... ..' .... .'
..:.:..:::::.:::::::..".::::::.:::..::.:.:.::::::::.:.::.:../:::::::::.::.::::::::::..:.::::::::.::.:.:.:...::.... :x.·.·:·.::: .:..:.....
...
5ftl
...10.5 ft SAMPLE 9 .2.2...-ft
... ..
10 ..2JLft
...
...:....::......
Sftl
y
....:..:::::... ........
:::·Sft :.::::::<::::.
..:':\::.;-:... ::::\i:·
SAMPLE 12 _ft··
__y~" x._no
_. ..ye~ Lno
. __UHtO.. .
_yes X-no
.. ..
... . ..... ... .. .. ... .. ,... . ....... ............ .. ... ....... .. .' ..... . .
l - ..' .. .- .
, ' ~ J ,..., - e t _ f" --'-=':'=~'I;r=o-::;:r.<;>-c:.'"'-'.x.c-~='O""ù:.. -_- ,... - ~ ~=, ....::: - - ~
~~~==.:~~~=~:~,:~~..._~-~.:¥g~~ro:... ~~ii~.-:."~&~~=};~:~:·-~.
11 _ft
1090
_yes Lno
·
ft :r feet pprn = parts per mi II ion
* NOTI:: CONCfNTRATlONS FOR AMY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppn FOR BENZENE, 80ppm FOR TOLUENE, 40ppnl fOR JffLENE
AND 40ppn FOR ETHYlBENZENE IN ORDER TO BE USED WITH THE CENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS fOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPLES WHICH HAVE CONCENTRATIONS LESS THAN THE DETECTION LIMIT.
..
.. .
. .
42
1000
yes K.. no
1000
_yes K..no
1000
_yes Lr,o
~
_yes _no
pPI1I
~ .
.l .
Ii
¡.
. I
, ,
, ,
'1
·
I!
~IS.TAHC;E FRC»4
SUIUACE TO
Gf!OIJ/d) 101,11 "fER
, .
A
1_?·9.Qft
!
. ,
, i
·
. .
Ethy1benzene
Table 10
Pence Petroleum.
C
D
TABLE 2-3
ENVIRONMENTAL FATE WORKSHEET fOR Ethv1Ben_~FuEL CONSTITUENT)
DISTANCE FRC»4
SAMPLE TO
SURFACE
...5__ f t
..
5ftl
.. .l(L.ft
A
5 r t I
.. ..l.5.. _ f t
A
Sft I
.. ...2JL f t
A
5ft I .
...2.5.... f t
....
5ftl .
".l!Lft
A
............
DISTANCE FRC»4
SAMPLE TO
GROOND \lATER
A
SAMPLE 1 1 ~_5 f t
SAMPLE 2 f.~Qft
SAMPLE 3 182 ft
SAMPLE 4 18-º.ft
SAMPLE 5 175ft
SAMPLE 6 170 ft
SAMPLE 7 165ft
Sft "" .
. "~ft SAMPLE 8 160ft
...
5ftl
....!L.ft SAMPLE 9 155ft
. . ... ".........
Sft I ...., '..:'
.. ..5..0.- h
...........................
Stt " ....
. .. 22.._.f t
>..:S~t ...1:'/·.
.'''..:. ;6Ô·ft
".
"
150ft
E
CUHULA TI VE.
CONTAMINATION
LEVElS C.C.L.
SOIL SURFACE
SAMPLE 1~D. .H·fII
= I:.C.L. 1__
C.C.L. 1
+ SAMPLE 2!,:!-º....pf.'1I
= C.C.L. 2=-
C.C.l. 2 . .
+ SAMPL E 3 O,.~ .~ .8r, oil
= C.C.L. s.O..68.
C.C.L. 3
+ SAMPLE 4J.::..~-º ppn
= C.C.L. 1,.1...6. 8.
C.C.L. I, .
+ SAMPLE 5~_~?PP"
= C. C. L. c¡ A......l.8_,"-_
C.C.l. 51 7
. SAMPLE 6_..~._.Pf~1I
= C.C.l. 6.5 .JHL.__
C.C.L. 6
+ SAMPLE 7ND Pf~1I
= C.C.L. 7~_8-ª___
C.C.l. 7ND
. SAMPLE 8 ppm
= C.C.L. 8.5. 8 ~__
C.C.l. 81 2
+ SAMPLE 9..:...:...:..JJ
= C.C.l. 97.08
C.C.L. 92 6
+SAHPLE 10' ppm
=C.C.l. 109 .68
C.C.l. 102 9
+SAMPlE 11'. epn
=C.C.L. 11~8-
C.C.L. 112 4
".SAMPLE 12· r
q=c.c.L. 1214. 9
f-I~~ERAG~ ANNUAL
PRECIPI TATlON
I .... r -::~::-_=:-:.I_~CHES
I I I I I I I I I I I I I I
i I I I I I I I I I I I I I
f G
ACCEPIAUlf.
UJN I AHI MAr ION
lEVELS
CLEANUP?
YES IF E .. F
NO I F E ~ F
.- _.... -.- -
._.ye!. no
... . ----..-
..__yes _no
~.O.O.o.._
__. Yl!:" X-no
..100.0..._
__yc'.. x...no
.lD Of} _
_. ..yc~ X-no
. _l.O.O.Q._..
_yes X-no
100q. .
_yes X-no
1000
yes L no
100L
_yes X-no
1000
_yes Lr,o
1000·
_yes Lno
1000
·
ft = feet """~~. ~ =. parts per mi II ion
* NO·rE: CONCENTRATIONS FOR ANY SINGLE SOIL SAMPLE CANNOT EXCEeD 100ppm FOR BENZENE, 80ppm FOR TOLUENE, 40ppm FOR XYLENE
AND 40ppm FOR eTHYLBENZENE IN ORDER TO BE USED WITH THE GENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS FOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPLES WHICH HAVE CONCENTRATIONS LESS THAN THE DETECTION LIMIT.
42
... . ......... ..... ... ...... . ................... ... .... ... ..', .., .'
, - ,^_ ,H
,_ ... _~ ) _-.' _ _. '-.-'-U"'C"'..r::n=o-,;;,, ç;rf:"f<;""""t:TA:¢"=~"r -_~ ~=, '.o" - ~
,ii~;~þ~~;~;:~~" ~~¡~~~~£~. . ..~-. '.--==~.~...:-.=.'~. .-.....þ~..~"~~~:~~.-,-;=~~;.;:;~.~ .H,
TABLE 2,'
ENVIRONMENTAL fATE WORKSHEET 'OR
Ethylbenzene Cant.
·
Table 10 Coot.
Pence Petroleum
·
ij C
D I ST ANtE FR() DISTANCE FR()
SURfACE TO SAMPLE TO
G"OOI,¡D ~A'ER SURFACE
A A
1-213-9- f t
! Q.?- ft
...
5ftl70
" ft
----
,.
5ft I
,,75 ft
..
5ftl
,,80 ft
,.
5ftl
,,85 ft
4
5ftl .
. ,,90 ft
D E
DISTANCE FR() CUHULATIVI:.
SAMPLE TO CONTAMINATION
GRWND \lATER LEVELS C.C.L.
SOIL SURFACE
SAMPLE 1..~D. .H·m
SAMPLE 1 1_3 9 t = C.C.L. 1.14~98
C.C.L. 1
. 13.o0t + SAMPLE 2_(t~. ª.PPII
SAMPLE 2 = C.C.L. 2_15. 78
C.C.L. 2 0 .
12_St + SAMPL E 3 ... ~-? J~ <II
SAMPLE 3 = C.C.l. 3_16....48
C.C.L. 3
120t + SAMPLE 4_Q.~2 ppll
SAMPLE 4 = C.C.L. 4._16.. 6.8
C.C.L. 4 1 4
lISt + SAMPLE 5_~...W'"
SAMPLE 5 = C.C.L. 'i...l8. ~8
.... C.C.l. 5
.- IlGt + SAMPLE 6_ 0 . 8.Pf~1I .
SAMPLE 6 = C.C.l. t,_~8...8ß.
,-
C.C.L. 6
10 !it + SAMPLE 7 _.Q..:...§..PPII
SAMPLE 7 = C.C.L. 7...l9-L..4Jt
C.C.l. 7 D
lOCh + SAMPLE 8 N ppn
SAMPLE 8 = C.C.l. 8~4_el
C.C.L. 8 ND
~ft + SAMPLE 9 ppm
SAMPLÉ 9 = C.C.L. 9 19.48
C.C.L. 9 O.0fg
+SAMPLE 10
SAMPLE 10 ~ft =C.C.L. 10 19.4
.......::...:...
sit I··:: .. . .
. ,,100ft'
4
5ftl
: 10.5ft
. 5ftl· ..:'
. ,,110ft
... ...:....::.....:.
5ftl'
:."_ft
C.C.L. 10
+SAMPLE 11
=C.C.L. 11
_ft
...: ::.::4 ... ... .
.' ·:::·YU·)·::·~:~ : ·::ŠAMPLE 12
C.C.L. 11
. +SAMPLE 12
·=C.C.L. 12
". .
..
_it
.. ..
:::::.:'y
..... ....
..... ......
......... ..... ........
..... ... ...... .......
... ...... .... .. ......... ......
.. ........ .... .... ...............
.... .. ..... .
.. . ...... .... ..... ...
.............. ... ......... ............
............. .......... ............... ...... ......... ...
. ....... .............. .............. ..............
............. ............ ...... .............. .. .... ... .....
..:....:::::.:::;:::..:..::::::.:::.-::.::::::::::::.:.:.......::::::::::::.::::;::::::..:.::::::;::::.:.:::.::.:.:.:y .::::..:.:'.:::'..
..
..( FUEL CONST ITU£NT)
--I~~ERAG: ANNUAL
I ..J'~RE;_:PIT!~~~:s ~
I I I I I I I I I I I I I I
i I I I I I I I I I I I I I
f G
·
ft .. feet ppm .. parts per ..i II ion
. NOTI:: CONCENTRATIONS fOR ANY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppm FOR BENZENE, 80ppm FOR TOLUENE, 40ppm FOR XYLENE
ANO 40ppm FOR ETHYLBENZENE IN ORDER TO BE USED WITH THE GENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS fOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPLES WHICH HAVE CONCENTRATIONS LESS THAN THE DETECTION LIMIT.
42
ACCEPIAUU:
WtH AM I HA rI ON
LEVELS
CLEANUP?
YES IF E > F
NOIFESF
ppm
.lD .00_ _ __.yc!> X_.no
.10_QO.._ .. __yes 1Loo
_ ~ .o..Q.O-..::. _ye~. X-oo
._ ..1.0_00___ __yc:. ]Loo
__.1_0.Q.0_ _. ..yc:', ]Lon
. _..l.Q..QSL. _ycs JLno
1000 yes JLoo
1000 _yes JLno
. .
,..
1 OOL _yes JLoo
100.0 yes JLrp
yes _no
ppm
... . _yes.' ...,..-00
.. .
....... . ." ..... ..
.. . ..' ...... .....
.. ... ........
.... ..... ...
..... .... ..
. ... ...........
. ..
.
II
D I S.T AHC;E FROM
SURfACE TO
G~CXJM) \lA'JER
..
1~·9..Qft
!
TABLE 2'1
ENVIRONMENTAL FATE WCltICSHEET 'OR Xy ene
Table 11
Pence Petroleum
C
D
DISTANCE FROM
SAMPLE TO
SURfACE
DISTANCE FROM
= SAMPLE TO
GROUND \lATER
..
..5__ f t
..
5ftl
· .l.íl. _ ft
..
5ftl
..l5..._ft
..
SAMPLE 1 19..5 f t
SAMPLE 2 l.9..O.. f t
SAMPLE 3 L8.5_ f t
5ftl
·2!Lft SAMPLE 4 L8JL f t
..
5ft
.. · 22.J t SAMPLE 5 1..25.. f t
.. ..
. 5ftl' . .
· ..J.íL f t SAMPLE 6 .11Jl.ft
..
5H ..::·. .:. L6.5.. f t
..~ft SAMPLE 7
..... . .'. . . .
Sit ···::; : ..
" .
·.~ft SAMPLE 8 160 ft
..
5ftl
.:~ft SAMPLE 9 155 ft
5ftl·:
...2JLtt 10 150 ft
.... .:...... '..
5ft ..::.'.
. .22-ft SAMPLE 11 145 ft
. .:... ...... .
... :.š~! r\.:.\:::::: .
.i\,,:,::,::,:,¡f!t,tf;b,'~,L~,~:
:.:...:.....:.:.....:.....:.:.:...:::.....:.............:.:.:.:.:.::..:.:.:.:.:.......:.:.:.:.:.:..:......
::.:..:'y
E
CUMULATIVE.
CONTAMINATION
LEVELS C.C.L.
SOIL SURFACE
SAMPLE 1~P. . Hill
= C.C.L. 1~~_ .
C.C.l. 1
+ SAMPLE 20 . 0 3 Ã,UI
= C.C.l. 2õ~·~-ö33
C.C.l. 2 ..
+ SAMPLE 32 .~. ~_. H.II
= C.C.l. 32..4.33
C.C.l. 3
+ SAMPLE 4?_.~.~ ppll
= C.C.L. 48..333..
C.C.L. 4 .
+ SAMPLE 5!~.... ~J ~a
= C.C.L. 52.2..- 33.._
C.C.l. 5
+ SAMPLE 69 . 3 PI~II
= C.C.l. t',3T~~6~3_.
C .C.l. 6
. SAMPLE 710 PµIJ
= C.C.L. 742[AJi~
C.C.l. 77 8
+ SAMPLE 8' pµn
= C.C.l. ~9 .-4)_3.
+ ;~P~Ë ~ .~
= C.C.l. 9Sb:433
C.C.l. ~, 2
+SAMPLE 10-<- ppn
=C.C.l. 106 8.433
C.C.L. 10..1
+SAMPLE 11L ~
=C.C.l. 11/9.433
. C.C.l. 11~ 1
'.. +SAMPLE 1 Z- . PeD
=C.C.L. 128.2. ::)::S j
..
_.C FUEL CONST ITUENT)
r-I~~ERAG: ANNUAL
PRECIPITATION
I·J -::-=-_~.I NCHES
/ / I I I I I I I I I I I I
i I / / / I I I I I I I I I
f G
~
ACCEP r AUlf~
UlN r AHI NA r ION
lEVELS
CLEANUP?
YES If E .. F
NO If E ~ F
... . .....q........ ...... . ................... .". ... . .
~-i;:.~~¥~~~~~~.~~:~.:;~~~~... 0 .~....~-.~-==..-.-==;:.~...:;.....=._;~~~ ~.~~~~~..=~~s=~~~.~.~<
.
ft .. feet ppm .. parts per mi II ion
· NOTE: CONCENTRATIONS FOR ANY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppm FOR BENZENE, 80ppm FOR TOLUENE, 40ppm FOR X~LENE
AND 40ppm FOR ETHYLBENZENE IN ORDER TO BE USED WITH THE GENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS FOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; DO NOT INCLUDE BOTTOM SAMPLES \lHICH HAVE CONCENTRATIONS LESS THAN THE DETECTION LIMIT.
42
..LOOo. _
._.yc!> -X.no
. .1fiD.D._
__yes ..x,..no
_.~:0.01L
_ye', ...x...no
. ..100.0._
__Y~-';' Lno
._1.0J)1L
_. ..yc~ ...x...no
. _.lO..OlL.
_yc~ ...x...no
loon'·
_yes -X...no
1000
_yes Xno
;.. .
1Q.OJL
_yes lLno
1000
_yes ..x...r,o
1000
yes 1l.nÖ
.. .
.
1&
01 ST IItIC;E FRCIf
SURfACE TO
G"OO~iD IJA 1E R
..
12.M ft
!
.
.. .....
. ... . .. .
fABLE 2'1
ENVIRONMENTAL FATE \lCRICSHEET fOR xylene __.(fUEL CONSTITUENT)
Table 11 Cont.I
i
Pence Petroleum'
C
DISTANCE FRCIf
SAMPLE TO
SURFACE
..
o
01 ST ANCE fRCIf
SAMPLE TO
GROOND \lATER
..6.5- ft SAMPLE 1 13-5 f t
..
5ftl
Y:J.ü-.ft SAMPLE 2 13.0.ft
..
5ftl
Y~_ft SAMPLE 3
..
SAMPLE 4
SAMPLE 5
..
SAMPLE 6
. ...
SAMPLE 7
...
SAMPLE 8
SAMPLE 9
. .
SAMPLE 10 _ft
.1- A
r AVERAGE ANNUAL
PRECIPITATION
.J INCHES
----
-. --.--
...
.. ..
... I· ....... .... ........ ........ ...... . .................. ... ...... ..... '.' ........ '.' . - - -..... .. .... .... .... .... ....... . .
_ ~ _ _ ~ -=_~_~_~'~'___ _~--=---,~~~...ç -~;";;..r~ n_r.--7.t_~o-==='~r==~--~~-~__ ~-:- - ~_...:-~--_ -- _:.~--:
;,...,.y ,-.o~ ~-.:r.T:J.J. _/ _~( ___,;;')",,1' .......-(.,.,~~~,.....(;~_~~¥;;::-o:-_ _ _v - I
:§~-~':~~~~~~.:.~..;;~;==-~ __~~. :7~~~~.... .' .....;,:z~~. ....... .~=.~.~~.~.rt,~;;.=~::~~_ -:.
5ft
Y .8..0-- f t
..
5ft I
Y.B..S- f t
..
5ftl
Y 3...Cl- f t
.. .
..
5f~I' ..
....9...5....ft
.......::... :": .....
5ft I..··:· .
.. .lil.Qf t
..
5ftl
".lO.5ft
.. ..
5ftl .. ..
Yll.!lft
...:.. .::.....:.
5ft
Y_ft
'. ... ....:..... .
::.::..~.~~ r·t...·
.. : .:.:....~::;:.:.¡.?:::.:.:·:.tti..H:::..f.\:....SAMPLE.12. ~!~.:.
..... .. ..... ....:.......:.:...:.:.:.:.....:..-:...:.:.:.::.:.::...:.:..-.. ....:.:.:.:...... ....
:::::.:' y. '::;.;:::::;": :.::;'::\:':-:.' ..:":'{:::::::::::.:":::::::.:::.::; :'::::::::::::~::'''',,:::<::::::":::::::::::::,:::/::::::::::: :::'~_: >:.:y :::::..,:/: :':. :":
SAMPLE 11 _____ft
E
I I I I I I I I I I I I I I
i I I I I I I I I I I I I I
f G
.
ft ø feet ppm = parts per mIllIon
. HOlE: CONCENTRATIONS FOR AMY SINGLE SOIL SAMPLE CANNOT EXCEED 100ppn FOR BENZENE, 80ppn FOR TOLUENE, 40ppø FOR X'flENE
AND 40ppm FOR ETHYLSENZENE IN ORDER TO BE USED WITH TKE GENERAL RISK APPRAISAL.
THE LAST SAMPLE TO BE INCLUDED IN THE CALCULATIONS FOR CUMULATIVE CONTAMINATION MUST BE AT OR ABOVE THE
DETECTION LIMIT; 00 NOT INCLUDE BOTTOM SAMPLES IJHICH HAVE CONCENTRATIONS LESS THAN THE DETECTION liMIT.
CUHULAIIVE.
CaNT AMI NA TlON
LEVELS.c.C.l.
ACCEPIAUU;
UJN r AHINA rI ON
LEVEL S
CLEANUP?
YES IF E :> F
NOIFESf
SOIL SURfACE
ft
SAMPLE 1L.O .H·fI.
= C.C.l. 18 3 w 5 3 3 ..JAW 0. . __.yc!> X.no
C.C.l. 1
.. SAMPLE 21~.ª_.'J ·UI
= C.C.l. 28.7.333 ..1 O.QO._ .. __yes Lno
C.C.l. 2
.. SAMPLE J2 ~~).. n'"
= C.C.l. 38..9 w ··6 3 3 _~.o_Q.O_ ye,. Lno
C.C.l. J
.. SAMPLE 4.~..~ ppll
= C.C.l. "91.133 . .1.0.0 0__ __yc'.. JLno
C.C.L. 10
.. SAMPLE ~J._ ppa
= C.C.l. 59..9-.. 3.~ ._1.0..00- _. ..yc~ Lnt)
C.C.l. 5
· SAMPLE 6?..!..2.._ _ppll
= C.C.l. t'1G.4...9.33 . _~.oJHL. _ycs Lno
C.C.l. 6
.. SAMPLE ~~LPJ~II 1000
= C.C.L. 7J...O.9 _Q33 _yes .x....no
C.C.l. 7
. SAMPLE ðJ . 5 __pp'ß 1000 ]Lno
= c. C.l. 8JJl9.......5A3 yes
C.C.l. ~ 01 c·
.. SAMPLE . ppm 1000 ]Lno
= C.C.L. 91 0 q _ 5A.3 _yes
C.C.l. 9 .
.SAMPLE UP. 0 8 ppm 1000
=C.C.L. 1(JJ n q h?1 _yes X..-r,o
C.C.L. 10
"SAMPLE 11
=C.C.L. 11
ppm
_yes
_no
C.C.L. 11
. .SAMPlE 12
.·=C.C.L. 12
ppm
.: _yes.' ..,..-no
... "
". .
......
.. .. . ...
"" .'::">::-::";::~:::;':::::"»:.. ....
. . . .
42
I .
EXHIBITS
.
.
I .
'I
I . ;.-!L:_
-11'~ .....
11M rt §.-.rw ~
-- '" ~""""N..
14''''' o· . 51
-
...
~
LUQt'IÎ
- !"'"
c!;¡ :; Iii
~JJ
.1 i i
-~--'
AU ..,..
I
I
i
:;;. '.0.
~ ~ ORSUIDIT
~--'L!¡~IT,
.- - .~ -
~. -_.¡=' 1lfmZ:tïG .
..... ...
~I_MJ·
- 0
. wr ~ ...W"\___
!
Ii
5,· iG'I1WAT lilt· :
i ¡ ·:Cc '
_.. I~ -
. _ .. DfUlU '
S ::.'I'CaMCUI_ IfIIi'i ~. AVI-'';' MDltI
It ~auOlll." Q caou --..
--~,.gI -ìtV-;;! -.-sT:: i m.IZ
~ . J _ . MeN" CT
~NI~~_. ._Il!.. i". .fJ:~~~ AVI I ...
'- ~_i~ n
IT :1
lilt ..
-I
i
I
i
!
i
i
I
i
71 t: ~
E;d'li bit
AauaGeosciences ¡nc
. ." 1 \r' 'i's~"^,1nd Dr-in Suit", 1 03
enñ€' ld, ~;a 1ifornia ;'330 ~
T~tephone. (30~) ~ZS-O~6:
;~X 328-1129
I
I
I
I
II
,
Pence ?et.r~)1 eum
ô;,s i<~ rMi e! d ::.j 11 fo r ni 3
",/1 C I NIT..' ~AF
I
I I
I
i
'I
o St\lIght
N
~
x
Dirt Lot
East Truxtun Avenue
Sidewalk
Fence Line
/
Approximate location of
former underground tanks
B-4
.
Scale 1" = 10'
o
5 10
20
15
AquaGeoscienœs, Inc.
1701 Westwind Drive, Suite 103
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax: (805) 32801129
Sidewalk
\
VE-2
o
Vapor
Extraction
Unit
B- A
VE-3
o
Slg~st
VI-1
o
Confirmation Boring
D. \
VE-1
\ 0
\
B-2 ~
. ~
VI-6
.
Approximate location of dispenser island
o
Pole Anchor
Title
Pence Petrole.wn
901 E. Truxtun
Bakersfield, California
SITE MAP
VI-5
·
\
Approximate limit of
petroleum hydrocarbon
impacted soil
Key
· T esthole Borings
o Vapor Extraction Wells
· Vapor Inlet Wells
· Conflnnatlon boring
Exhibit
:§
Q
C
~
æ
2
\
N
Estimated Portion of Plume
Requiring Remediation
Former Gasoline
Tanks and
Dispenser Island
manhole
o
CI)
ëã
CI)
a:I
East Truxtun
.
streetlight
East 18th
SCALE 1" = 20'
. Prior Boring Location
o Vapor Extraction/Inlet well
- -
-
parking lot
- --
Exhibit
AQuaGeosciences. Inc.
1701 W~!Stwind Drive Suite 103
Bakersfie.d, California 93301
Telephor1le: (805) 328-0962
Fax 328-1129
Title
Pence Petroleum
901 E. Truxtun
Bakersfield, California
AERIAL VIEW OF PLUME
3
o
8-4
Surface
V!-4
B-2
VE-1 VE-3
VI-1
VI-6
20'
ND
ND
40'
Screened Interval
60'
NO
80'
ND
100'
ND
ND
ND
TPHg Plume
120'
Scale 1" = 1 5'
o
20'
I
40'
Title
Pence Petrol.e.um
901 E. Truxtun
Bakersfield, California
Cross Section A-A'
Exhibit
AquaGeosciences, Inc.
1701 Wastwind Drive, Suite 103
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax: (805) 328-1129
4
o
Surface
~:.. ·i~·:::.:..:.t:~:.:.:::\:::::\:::·:.:.::· .::::;::..:,"::=-. :-.:.
r::::::::::::::n:::::~ . 1:t::li:i.!I..llf ... ..... .... .. . ....... .
"i4,!f~i~~i~~I~jìfI"- í~';,
A _.. :::::!::~m ....:.:.::.,.. mmm..·:·:··· .... .··.il!lii~~I:L.·······...··,·,:::::::: ....::::::;.::::;:.. :;:;:;:::·:~:~ii~:!:r···· .... .......... .
Interval
B-3
VE-3
VI-S
20'
40'
60'
80'
100'
TPHg Plume
Scale 1" = 1 5'
120' 0
20'
I
40'
Exhibit
AquaGeosciences, Inc.
1701 Westwlnd Drive, Suite 103
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax: (805) 328-1129
Title
Pence Petroleum
901 E. Truxtun
Bakersfield, California
Cross Section 8-8'
5
·
APPENDIX A
Site Assessment Lab Reports
and
Chain-oj-Custody
·
·
c:77q ua z~..:,.: ~:,~~: ~:':I:~.'.I ::1~1:::
~JECT NAME
~ENœ - 9'0/ E, 7/~ J)(riAl
L.P. NO. SAMPLERS' ,S'gnalure/Number}
(P.O NO)
Ph; // n (.;/I~:J/ L4...' ~A1
DATE SAMPLE ID, I SAMPLE 10
TIME
MMtDDtYY HH,MMSS
PROJ. NO.
L
NO. Simp'.
OF Typo
5011
CON· 151
T AIN· WI'or
ERS (WI
Sludgo
($g)
'pc,
/
REMARKS
,
I~ 1,1 141, q' t¡ 3 JJ.M Vr . / ~ :¡~-
Ie ',.... } -- JI'D'
I,. L I ro' J J~' i·1. 1'JM Vi:. - Ai) ~ j
I Ç;/Z.I 'tH i / 1'1 ~ tJ t AM 'II - 1 @ ,j-S-'
1~~1.,""J 1/ 'I' AM IIr - 1 6) '71) I
....-
,//.,,,/PtI IlJ ~~" AM
)., '1 J J '. /)c:; ^ 1YI
rK(...~/,,'/ ~. .,^~-
'5 . Jd ;1' '-5 ÿ(Joa'\
, I
^
R"}~qUi "-d bY\~i~nltu~
^ fI d
~/..11, r 1 .J ~
Re inqu She~ by: '(Signltu,o¡
Relinquished by: ISignlture)
c/E - 1 /iiJ ¿6-'
V '- - J /if¡J fi~ I
.1 ~ I
\J E.. -I @ 1t:JtJ
\/£-1 ræ jfjç'
I 5 vV'
I 5 1/./
i 5 vV'
J j vlÝ
J ~ V II"
J '5 v'V '.
f 5 l/ ~ .
I S V' ¡....
1)'/ ~J~;r~':~~ ~"';"d by ~"""..
\ "-"I'm. ..~;..d by' ..",,-.
Remarks
Send Results ~ r . 0 (,., /V kJ J¡J
Attention of I f 1 (;1¿;f7&-
AQUAGEOSCIENCES I
1701 Westwind Dr.. Suite 101
Bakersheld. California 93301
D.1erme
~e~V¡:I ¡;¡b~~.tOry ;12, ~ J
~ ,I, /JI' :j/.' / / JI.t'
if 'Y () , Canary . Return Copy To Shipper
CHAIN OF CUSTODY
Pink lab Cop"
White Samplef
a;qua-' -~--~-'þ---' - .--.
(;..·"".1.·....·. ~. "'""". . 1".".·,.....·"..1 C.·'....h.,,'.
PROJ. NO. -,ECT NAME
~;"i16i} ~..Je~c.,¿ ? tA·(õ \ t:..Vt^
l.P. NO.
\P.O NO)
L
.---
¡Ý'iG
NO. S.mple
OF Typo
SoU ~
CON· (51 ~CIj
"
TAIN· Wiler ~
ERS (WI ~
Sludgl II~
($g) /^
SAMPLERS' (S,gnalure/Number)
'P h' \ ~:> (:, oA-Lw ,~
DATE SAMPLE 1.0. I SAMPLE 1.0
TIME
MMIOD/YY HH MM 55
g'z,ilkrt/ "',30M
'8 111 t?/ 10.' D~-Irl
1~(2A~" 1t>:JAAt1
c¡ Iv;''!1 II'. 'JA AM
I
W7Jr.IIIJI i'. 3 ~ 41-1
97J!hl 1: 'it:. N1
~ ~14 J:.~ç p('f
((} !lÞ"" "ir' ')~" AM
I ,
REMARKS
\/&...2,. G? 2. -' I " i/ ~
,;)~
\11£ . 2. r;J I;-Ò i , 5v1v
\1 r;,-;J. @ "ð , S / 1/ .
\/¡¿"~6J )¡O' , .$ vi II
v£.,· ~ @. lò I I 5 V V
vE, .- ~ (ð) /j_1 5 .... 'V' ~
v/3....· ~@ , , ~ vy
.;)0 .
\/1£.-:;3 ~ ~l>f I 5 vV'
----.
^
. :Q !C~~d~~~ .. /' W;:r;:, ,fll ";:¿:...; .
RelTnqulsned \Y:¡ISignIIU'I)
Relinquished by: (Signllurol
~.. -~<-
Send Results To ~I -. \ 1" .. I ., I
Attention of 'V\A, \ I ~ ()ð\--LW J.J
AQUAGEOSCIENCES
1701 WeSlw,nd Dr.. Suile 101
Bakersloeld. Californra 93301
Remarks
DÐITlme
Delemme
eV)t!¡A l:w p
Received by: (S\9nalure)
:~ ;¡¡¡""~7 i'l
VL
Canary. Return Copy To ShIpper
PH'" lab COD~
WhIle Sample,
CHAIN OF CUSTODY
Nevada
~.I!øJ¿ JM.
Arizona
.
5327 Wlngfoot Drive
Bakersfield, CA 93306
(805) 872-4750
Laboratory Res~lts Por :
Pen,c:e Petroleum
901 East Truxtun Ave
Bak1ersfield, CA
Date Received : 8/23/91
Date Analyzed : 8/30/91
Analyst: J.S. Johnson
Lab NO. 910122
Sample Matrix ; Soils
Benzene
. mg/1c~
Toluene
mg/kg
Et.hylbenzene
IIIg/kg
Xylenes
mg/kg
Tot Pet Hyds
mg/1cg
V I - 1 @2 5 I. 183.750 421.220 82.105 984.220 15,000
VI-1340' 73.505 168.210 31.215 492.015 6,625
VI-:lti55, 91.875 210.000 42.310 615.010 7,420
VI-1370' 61.250 t40.000 27.010 322.975 5,105
. V.E-ÜÞ65 ' 200.335 505..075 92.015 1105.125 17,220
VE-JL@85' 147.310 323.015 52.710 779.875 12,910
VE-Jl@)100' .995 1.210 .275 4.22S 125
VB-HUOS · ND ND ND ND 30
All Results Reported in Milligrams per Kilogram
ND = Non Detectable; ¡PA 8026 (oOOS mg/kg)
EPA 8015 Modified tor Gasoline (5 mg/kg)
Analysis of VOlatile Aromat~cs ; EPA 8020 .
-AnaJ.ysis of Total Petroleum Hydrocarbons ; EPA 8015 MOdified for Gasoline
*The TPH Method for Gasoline is· the Calif DOHS Recommended Procedure
Certificate Number : E739
.
te3'd 6Zt'tSZ£
t '* :62HEa2ssøs
Certified Full Service On Site Analytical laboratories
01 'JNl Se~l 3lIeOW WO~~ Se3:'t't 't66't-St-d3S
~9S£g 2¿8 50S : Wö¿ø:øt tõ-St-6: tt0¿ ~3IdO~3ì3~ XOö3X:^g ~~ö
Nevada
MoIÃ bJM, JItA
Arizona
.
5327 Wlngfoot Drive
Bakersfield, CA 93306
(805) 872-4750
La~oratory Results For
Penc4~ Petroleum
901 Bast Truxtun Ave
BakeJ:'sf ield, CA
Da~e Received : 9/1/91
Da~e Analyzed : 9/9/91
Analrst : J.S. Johnson
Lab No. 910130
Sample Matrix ; Soils
Benzene
. mg/kg
Toluene
mg/kg
Ethrlbenzene
mg/kg
Xrlenes
mg/kg
Tot pet Hyde
mg/kg
VB- 2(i3 5 ' .335 1.010 .105 2.220 120
V!-2I§1S0' 12.220 28.885 5.500 103.775 1850
VB-21~60 I 2.210 9.055 .875 12.150 375
VB-21~80 ' ND HD ND ND 30
. VE-31!UO' ND ~_D ND .105 80
V!- 3111 S' 1.115 20.210 .725 9.990 320
VE-3'@20 · 11.775 26.210 3.330 88.C45 1250
VE-3830' 17.200 50.270 7.710 161.075 1825
All Results Reported in Milligrams per Kilogram
ND = Non Detectable, SPA 8020 (.005 mg/kg)
BPA 8015 MOdified for Gasoline (5 mg/kg)
Analysis of Volatile Aromatics ; EPA 8020
-Analysis of Total PetroleUM Hydrocarbons ; BPA 8015 MOdified for Gasoline
.The TPH Method for Gasoline is the Calif DOKS Recommended Procedure
Certificate Number
£739
~.o
.
E0 ' d 6EH8E£
Certified Full Service On-Site Analytical Laboratories
O~ 'JNl S8~l 3l180W WO~~ 60:tt t66t-8t-d3S
~Q~:;-<::I ::>,/.g C:;;C39 : wösø:øt t6-St-6: ttø¿ ~3IdO:)3ï3J. xO>-:l3x:,1..8 1'r:J::!
'/ 1:t~¡:::''/T.T.~~'/<:"t:;ClQ
.
APPENDIX B
Additional Inlet Wells
.
Lab Reports
, and
Chain-of-Custody
.
.,..-: ",-:J
. ITII.EMERV COMPANY CHAIN OF CUSTODY.
"ull Se,vice /"depe"de", Testi,,!! Lablln/tory. ¡';"'/ablished /904 ANAL YSIS REQUE
I East Washington Boulevard · Los Angeles, California 90021 · (2 749·3411 · Fax: (213) 745-6372 DATE: PAGE OF
P.o. Box ¡!!!()550, Hunter's Point Shipyard Bldg. 114 · San Francisco, California 94188 · (415) 330-3000 · Fax: (415) 822-5864
5427 Easl La Palma Avenue · Anaheim, California 92807 · (714) 693-1026 · Fax: (714) 693-1034 FILE NO. LAB NO.
CLIENT NAME: Rv£ )J~.... Cc: ANALYSES REQUESTED: REMARKS:
PROJECT NAME: ,P(:!... c c: rC. 7,:. .Ie,,--. PROJECT NO. P.O,NO,
ADDRESS:
0
PROJECT MANAGER: ~I /1 ((c./~..,. ( PHONE I: J '1.. ð' - o"} (, ~ FAX I: ....J
.- w
c/:~ U)
ð~ w
SAMPLER NAME: ~ T' ,f- /1 t(t.lPr¡~ ':.I ¿ ë5
.... " '- A' ~
" X
w
TAT ¡Analytical Turn Around Time o = Same Day; 1 = 24 Hour; 2 = 48 Hour; ¡Etc. I-
co
<:)
C} C\/
::E <:)
CO NT AINER TYPES: B = Brass, G = Glass, P = Plastic, V = Voa Vial, 0 = Other: LO co ~
J N cci
CONTAINER <:) ~ SAMPLE CONOmONl
SAMPLE DATE TIME MATRIX <0
NO. SAMPLED SAMPLED SAMPLE DESCRIPTION SOIL OTH~R TAT COMMENTS:
WATER SLUDGE . TYPE
v-r-Jo /0)1)/11 /r)o 7JA- 2. í! >' ./' I /J ./ /'
V-S--)l" Jø /)/11 l.rfr iJ/i-Li'J /' I j) ",-/ /'
V... f~Jr /0111' .Ii } 07J1' íJA- Lft ,/ I /J /' "".-
I/-~-'Ir /ú1Í~A) Ju/f rJJ 2..f 7 /' I tJ .,,/ .,,/
I/- /-Sb k/lyJfJ IOJ) 7J A- 2-P ¡> 1/ I 3 / ----
II-jl· '6 JO;/"hJ 1117 'JA-L't7 ./ I J ../' ...,/
1/-1-~ Ja/;JlAJ IlrJ íJ.4- ¿<90 /' ( !J ----- /'
hIlt/In .,../ I !J /" /'
I/-Y-lò 1}/1 1J k t , I
v-Jl-~r JO#JJlfJ I rlð 7J 4- ¿ , 1- ./ / ø /' /'
V-i-1f /oþý),) IF }b 1JA-'L 'J / J b /" ./
aedB~IUreandPfi~øj _ Received By: (SignJlfe III1Ji.PrlntQd N~ /v'Ic; Date: 1~lme: IlltM SAMPLE DISPOSITION: &J
-L_ ~ ?c. "...,'c.. Æ- /"1 r G. d.,¿ nlc "I'1CN11 t",lr'Ycn ; ~ 1. Samples returned to client? YES
Relinquished By: (Signature and Printed .N!!me) Received By: (Signature and Pfinted Name)¡:7' , Date: Tima:
2. Samples will not be stored over 30 days, unless
Relinquished By: (Signature and Printed Name) Received By: (Signàture and Printed Name) Date: Time: additional storage time is requested.
" 3, Storage time requested:
days
SPECIAL INSTRUCTIONS: By Date,'''"':' ..,±:;::'- .:,
DISTRIBUTION: WHITE, YELLOW, PINK TO SECO - GOLD TO CLIENT
..;~.
.]i,,-
. ITH.EMIo.:RY COM!PANY CHAIN OF CUSTOD~D
'FilII S<'IV;æ IlId<'l't'l/dt'l// Tes/illg Laboralo!y. t:s/ab/ished /904 ANAL YSIS REQU
7¡¡ 1 East Washington Boulevard · Los Angeles, CaliFornia 90021 · (2 749-3411 · Fax: (213) 745·6372 DATE: PAGE OF
P.o. Box ¡¡¡¡0550, Hunter's Point Shipyard Bldg. 114 · San Francisco, California 94188 · (415) 330-3000 · Fax: (415) 822-5864
5427 East La Palma Avenue · Anaheim. California 92807 · (714) 693-1026 · Fax: (714) 693-1034 FILE NO. LAB NO.
CLIENT NAME: /(06<:=,,- r- ? ~,.., C. fiÞ ANALYSES REQUESTED: REMARKS:
PROJECT NAME: ~...<...... ?e.7::"" Ic,,--. PROJECT NO. P,O.NO.
ADDRESS:
0
PROJECT MANAGER: ~ 7;.,' c- k /1 (('..1'4~,/ PHONE It: .J 2.. ,ÿ - .;) c¡ ç L FAX It: ....J
w
<:.L d Y CJ)
~ 7:.,1, k" ~~~ w
SAMPLER NAME: I~ fp'~/¡'::~.( Ci
.Þ" ~
~
TAT (Analytical Turn Around Time o = Same Day; 1 = 24 Hour; 2 = 48 Hour; (Etc. CJ) t-
« !D
(!) 0
N
:2 g ~
CONTAINER TYPES: B = Brass, G = Glass, P = Plastic, V = Voa Vial, 0 = Other: to
C; è\ì ex)
0 ~ SAMPLE CONDmONl
SAMPLE DATE TIME MATRIX '. CONTAINER ex) CD
NO. SAMPLED SAMPLED SAMPLE DESCRIPTION WATER SOIL SLUDGE Onl,ER TAT . TYPE COMMENTS:
1/- ,-~ /0/;);' 3 o 7Jtc> <JJA 1..1 y- ./ / f) ./ /
V-c,-Jf /o/ÍJ I,) 100 l 9.Jk'2-7r .,/ I ¡J /' /
0- ,-~ /0 It 1/") lOLl 7) If '2-7(, /' I 0 /' /
V-'-Ý-J /ol/J/IJ / I IJ ,,/ /
lùJ7 ';J ,4 2-77
V-~-.>o )6 It d91 lo-SF C¡J ..fl.? g / I IJ ,/ /
V-' -S]' /ð /ÍJ I1.J 1110 7J A-l. 7 '1 / / JJ /' /
(/- "-70 lol/J/tJ /1-1(, 9J A- l..fo ./ I /; /' /
V-'-'1o /ð I/J/,) /Joo q"J If-'Ll I /' I lJ ,,/ /
tl-s--/j /óI11/1I /';Óo ?J A 1..9L / J iJ / /
, . / /
v-r-~ /O/"/l1 IS-DC¡ i J 4- 2- 1) / / J;
Relinquished ~nalure a~~rinted ~e) ~ ~ j;. k /"1 .C.. /..t-:~ By: (SlgJf"ture and Printed Nama) 11/¡~/&1"J Date: Time: SAMPLE DISPOSITION:
~.;- /1-1 ( ~. /,-,. ~J '~n'~ . HClo/mh-tVlI~y¡m J I Jnv. 1. Samples returned 10 client? ® NO
Relinquished By: (Signature and prjjllfd Name) Received By: (Si9~ and Printed Name) Date: Time:
2. Samples will not be stored over 30 days, unless
Relinquished By: (Signature and Printed Name) Received By: (Signature and Printed Name Date: Tima: additional storage time is requested.
'. :";X,,,: 3. Storage time requested: days
SPECIAL'INSTRUCTIONS: ,.
By Date
I
¡
DISTRIBUTION: WHITE, YELLOW, PINK TO SECO - GOLD TO CLIENT
·
·
·
11111111111
11111111"- ""1111111
HALCYON
ìJLaboratoríeS'.
Certified by the StDte of California Department of Health Services
Lðborðb)nl # IÇþ~
1701 Westwlnd Dr. Suite 103
Bakelosfleld, Cl~ 93301
Phone: 805-328-0962, Fax: 805-328-1129
,1111 11111h,
Report o' Analysis
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons
~md BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -4-35
Matrix: Soil
Analyst: MCM
Lab #: 93A286
Date of sampling: Oct 14, 1993
Date of analysis: Oct 19, 1993
Date of Report: Oct 19, 1993
Com und
Concentration
Units PQL*
mgIKg (ppm) 0,05
mg/Kg (ppm) 0,05
mg/Kg (ppm) 0,05
m m 0,05
mgIKg (ppm) 1.
m m 1.
Benzene
Toluene
Ethylbenzene
X lenes
ND
ND
ND
ND
TPH gasoline 31,
TPH diesel ND
·~PQL = Practical Quantitation Limit
-~ ~)
Rafael Espinosa Leniz, Ph.D.
Laboratory Director,
.
1111111111111
llliÍALCyòN'11111
'IJLaboratorít~. (
Certified bV the Stotz of California Deportment of Health SeNices
LOba'8t«'Y # 'c;J~
1701 Westwbld Dr. Suite 103
Bakersfield.. {~,-\. 93301
Phone: 805-328-0062. Fa ,x: 805·328-1120
,dlllllllllllllllllb.
Test: 8015mJ8020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr. Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V-4-45
Matrix: Soil
Analyst: MCM
Lab #: 93A287
Date of sampling: Oct 14, 1993
Date of analysis: Oct 19, 1993
. Date of Report: Oct 19,1993
.
Com und
Concentration
Units L*
mgIKg (ppm) 0,02
mgIKg (ppm) 0,02
mgIKg (ppm) 0,02
m m 0,02
mgIKg (ppm) ,5
m m .5
Benzene
Toluene
Ethylbenzene
X lenes
0.12
0,53
0.32
},O
TPH gasoline 200.
TPH diesel ND
*PQL = Practical Quantitation Limit
~~
Rafael Espinosa Lemz, Ph,D,
Laboratory Director.
.
I.
.
1111111111111
IIIIÍÍALCyo:N11111
~,JLaboratorít£). 1
,lIllllIllllllllhl.
Certifì0d bV the Stote of California Deportment of Health SeNices
LðlKnltcn' # .~~
1701 Wesh"hld Dr. Suite 103
Bakel~neld.. (:,-\. 93301
Phone: 805-328-0962. Fax: 805-328-1129
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
é!lßd BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Date of sampling: Oct 14~ 1993
Date of analysis: Oct 19~ 1993
Date of Report: Oct 19~ 1993
Sample: V-4-50
Matrix: Soil
Analyst: MCM
Lab #: 93A288
ND
ND
ND
ND
Units i[,*
mgIKg (ppm) 0,005
mg/Kg (ppm) 0,005
mgIKg (ppm) 0,005
m m 0,005
mgIKg (ppm) ,1
m m ,}
Com und
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
TPH gasoline ND
TPH diesel ND
*PQL = Practical Quantitation Limit
~~
,
Rafael Espinosa Leniz~ Ph.D.
Laboratory Director,
.
11111111111
¡ 1IIIHALCYON'111
,JLaboratorítS' ,f
Certified by the Stote of California Department of Health Services
Lðb«'ðtu"Y # IÇþ~
1701 Westwind Dr. Suite 103
Bakersfield, CA 93301
phone: 805-328-0962, Fax: 805-328-1129
. 1111 III 1 1IIIh ,
Report o' Analvsls
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield~ CA 93301
Contact person: Patrick MCCullough
Sample: V -4-60
Matrix: Soil
Analyst: MCM
Lab #: 93A289
Date of sampling: Oct 14, 1993
Date of analysis: Oct 21, 1993
. Date of Report: Oct 28, 1993
.
Com Wld
Concentration
Units L*
mgIKg (ppm) 0.05
mgIKg (ppm) 0,05
mgIKg (ppm) 0,05
m m 0,05
mg/Kg (ppm) 1.
m m 1.
Benzene
Toluene
Ethylbenzene
X lenes
,78
2,0
ND
4.3
TPH gasoline 1000,
TPH diesel ND
*PQL = Practical Quantitation Limit
p/~
Rafael Espinosa Lernz, Ph,D.
Laboratory Director,
, .
.
.
11111111111
1111""'" ·,··.'11111
HALCYON
IJLaboratoríeg .j
¡dllllllllllllh,
. Certified by the State of Californio Deportment of Health Services
Laba.ita'" # .çt~
1701 Westwlnd Dr. Suite 103
Bakersfield, (';A 93301
Phone: 805-328-0962, Fax: 805-328-1129
Report o' Analysis
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
arid BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Date of sampling: Oct 14, 1993
Date of analysis: Oct 21, 1993
Date of Report: Oct 28,1993
Sample: V -4-65
Matrix: Soil
Analyst: MCM
Lab #: 93A290
ND
ND
ND
ND
Units L*
mg/Kg (ppm) 0,005
mg/Kg (ppm) 0,005
mg/Kg (ppm) 0,005 "
m 0.005
mg/Kg (ppm) ,1
m .1
, '
Com ound
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
TPH gasoline ND
TPH diesel ND
:·PQL = Practical Quantitation Limit
.?/~
Rafael Espinosa Lèniz, Ph.D,
Laboratory Director,
.
Certified by the State of CaliFornia Deportment of Health Services
LðlK.filta"'Y # '<J~
1IIIIIIIIh
111111111" "'11111111
HALCYON
IJLaboratorít£) .j
1701 Westwlnd Dr. Suite 103
Bakersfield, £:A 93301
Phone: 805-328-0962, Pax: 805-328-1129
,tllllllllllllllh.
Report o' AnGlysls
Test 8015m/8020/5030 Total Petroleum Hydrocarbons
~md BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Date of sampling: Oct 14, 1993
Date of analysis: Oct 21, 1993
. Date of Report: Oct 28, 1993
.
Com und
Units
Concentration
Sample: V -4-70
Matrix: Soil
AnalystMCM
Lab #: 93A291
Benzene
Toluene
Ethylbenzene
X lenes
,023
,022
ND
.021
mgIKg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m
TPH gasoline ,7
TPH diesel ND
*PQL = Practical Quantitation Limit
,~~
Rafael Espinosa LeD.iz, Ph,D.
Laboratory Director,
i[,*
0,005
0,005
0.005
0.005
.1
,1
.
Certified bV the State of California Department of Health Services
Lðba"ðWn' # 'Ç)~
11111111111
11111111'....," IIIIII
HALCYON
,JLaboratorítS: ·1
1701 Westwind Dr. Suite 103
Bakersfield, <:i\. 93301
Phone: 805-328-0962, Fax~ 805-328-1129
,II 1111111111h.
Report o' ARGlysls
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -4-85
Matrix: Soil
Analyst: MCM
Lab #: 93A292
Date of sampling: Oct 14, 1993
Date of analysis: Oct 21, ,1993
. Date of Report: Oct 28, 1993
.
Com und
Units
Concentration
Benzene
Toluene
Ethylbenzene
X Ienes
ND
ND
ND
ND
mg/Kg (ppm)
mWKg (ppm)
mgIKg (ppm)
TPH gasolin.e ND
TPH diesel ND
tPQL = Practical Quantitation Limit
.~~
Rafael Espinosa Leniz, Ph,D,
Laboratory Director,
L*
0.005
0,005
0,005 '
0,005
.1
_I
.
11111111111
11111111'"' "'11111111
, HALCYON
IJLaboratoríes.
Certified bl,l the State of California Department of Health Services
Lab«ðtory II .t)~
1701 WestwAnd Dr. Suite 103
Bakersfield, CA 93301
Phone: 805-328-0962, Fax: 805-328-1129
,I IIIII Ilh.
Report o' Analysis
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
~lDd BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -4-95
Matrix: Soil
Analyst: MCM
Lab #: 93A293
Date of sampling: Oct 14, 1993
Date of analysis: Oct 21, 1993
. Date of Report: Oct 28, 1993
Benzene
Toluene
Ethylbenzene
X lenes
ND
ND
ND
ND
Units L*
mgIKg (ppm) 0.005
mglKg (ppm) 0.005
mglKg (ppm) 0.005
m m 0,005
mg/Kg (ppm) .1
m m .1
Com und
Concentration
TPH gasoline ND
TPH diesel ND
~PQL = Practical Quantitation Limit
.
~ //// ,
~ C.-/'J.--
Rafael Espinosa , Ph.D.
Laboratory Director,
.
.
.
11111111111
1'11111"'- ·"'1111111
HALCYON
~JLaboratorítS' .j
Certifìød by the State of California Department of Health Services
Lðba'8krY It .~~
1701 Westwlnd Dr. Suite 103
Bakersfield, CA 93301
phone: 805-328-0962, Fax: 805-328-1129
.1111111111111.
Report o' Analysis
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by PW'ge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V-5-15
Matrix: Soil
Analyst: MCM
Lab #: 93A282
Date of sampling: Oct 13, 1993 @ 15:00 pm.
Date of analysis: Oct 18, 1993
Date of Report: Oct 19, 1993
Com und Concentration Units L*
Ii
Benzene ND m!ifKg (ppm) 0,05
Toluene 0.33 m!ifKg (ppm) 0.05
Ethylbenzene 0,74 mg/Kg (ppm) 0,05
X lenes 3,9 m m 0,05 Ii
¡
!
TP~ gasoline 810, mgIKg (ppm) 1.
TPH diesel ND m m 1.
*PQL = Practical Quantitation Limit
ø~
Rafael Espinosa Leniz, Ph,D.
Laboratory Director,
.
11111111111
11111111'" "'11111111
HALCYON
IJiaboratorítS' ·f
Certified by the State of Califbrnio Deportment of Heolth Services
Lðbu'ðt4)O' #I .~~
1701 We8twind Dr. Suite 103
Bakersfield, ~A 93301
Phone: 805-328-0962, Fax: 805-328-1129
till II 1 1111 h.
Report o' Anealysls
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -5-20
Matrix: Soil
Analyst: MCM
Lab #: 93A283
Date of sampling: Oct 13, 1993 @ 15:09 pm,
Date of analysis: Oct 19, 1993
. Date of Report: Oct 19, 1993
.
Com ound Concentration Units L·
Benzene ND mg/Kg (ppm) 0,2
Toluene 2.3 mg/Kg (ppm) 0,2
Ethylbenzene 3,2 mg/Kg (ppm) 0,2
X lenes 9,5 m m 0,2
TPH ~oline 910, mg/Kg (ppm) 1.
TPH diesel ND m m 1.
*PQL = Practical Quantitation Limit
fJ
. ~G
Rafael Espinosa Leniz, Ph,D.
Laboratory Director,
.
.
.
1IIIIIIIIh
11111111'" ."11111111
HALCYON
~JLaboratorlts ·f
CertiAød by the Stete of California Deocrtment of Health Services
Lðbu"ot«Y # .~~
~ I
:1
'I
!
1701 Westwlnd Dr. Suite 103
Bakersfield, (;A. 93301
Phone: 805-328-0962, Fax: 805·328·1129
.1111
Ilh.
Report o' Analysis
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
~md BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -5-30
Matrix: Soil
Analyst: MCM
i
Ii
,
I,
¡;
Lab #: 93A284
, I
.1
Date of sampling: Oct 13, 1993
Date of analysis: Oct 19, 1993
Date of Report: Oct 19, 1993
.'
¡ii
'
¡
!
Com und Concentration Units PQL* ¡Ii
I,
i!
;J
Benzene 0,2 mg/Kg (ppm) 0,2 i~
I'
"
Toluene 3,7 mg/Kg (ppm) 0.2 I;
I.
h
Ethylbenzene 2.5 mg/Kg (ppm) 0,2 I!
II
X lenes 11. 0,2 "
m '1
!
TPH gasoline 1200, mgIKg (ppm) 1.
TPH diesel ND m m 1.
*PQL = Practical Quantitation Limit
-~~
Rafael Espinosa Leniz, Ph.D.
Laboratory Director,
·
·
·
11111111111
111 l1I1"· ."11111111
HALCYON
IJLaboratorít~ ·f
Certified by the State of California Deportment of Health Services
Labu"atu"-y II .{þ'2()
1701 Westwlnd Dr. Suite 103
Bakersfield, (;A 93301
Phone: 805-328-0962, Fax: 805-328·1129
Report o' AnalysIs
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
éJlnd BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -5-40
Matrix: Soil
Analyst: MCM
Lab #: 93A285
Date of sampling: Oct 13, 1993
Date of analysis: Oct 19, 1993
Date of Report: Oct 19, 1993
Com ound Concentration Units L*
Benzene ND mgIKg (ppm) 0,2
Toluene 10, mgIKg (ppm) 0.2
Ethylbenzene ND mgIKg (ppm) 0.2
X lenes 22, m 0.2
TPH gasoline /5200. mgIKg (ppm) 1.
TPH diesèl ND m m 1.
~~PQL = Practical Quantitation Limit
-.~0
Rafael Espinosa Leniz, Ph.D.
Laboratory Director,
.
.
.
11111111111
1111111.... -"'1111111
HALCYON
IJLaboratorítS ·f
I
¡
'I
1
I
!
,
Certified by the State of California Deportment of Health S0rvices
Lðbu"at«Y # .Ç)~
1701 Westwlnd Dr. Suite 103
Bakersfield, CA 93301
Phone: 805·328-0962, Fax: 805-328-1129
.111111111111111.
Report 0' AnalysIs
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
cmd BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V-6-25
Matrix: Soil
Analyst: MCM
Lab #: 93A274
Date of sampling: Oct 13, 1993 @ 09:40 am,
Date of analysis: Oct 15, 1993
Date of Report: Oct 19, 1993
'.
:I:
¡
"
.;
~ I
:1
i'
II
,
"
:1
I.
i;
!;
I.
l~
1\
:,
1
Com ound
Units
L*
Concentration
Benzene
Toluene
Ethylbenzene
X Ienes
mgIKg (ppm)
mgIKg (ppm)
mglKg (ppm)
m m
0,005
0,005
0.005
0,005
ND
ND
ND
ND
TPH gasol#Ie ND
TPH diesel ND
~~PQL = Practical Quantitation Limit
0.1
0.1
-#-~
Rafael Espinosa Léniz, Ph.D,
Laboratory Director,
('I
I:
II
Ii
.
.
.
11111111111
11111111'" ·""111111
HALCYON,
IJLaboratorítS'.
Certified bV the State of California Department of Health Services
LabU"ðt«y # .~~
170] Westwlnd Dr. Suite 103
Bakersfield, CA 93301
Phone: 805-328-0962, Fax: 805-328-1129
,tlllll II ¡.
Report o' AnGlysis
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -6..35
Matrix: Soil
Analyst MCM
Lab #: 93A275
Date of sampling: Oct 13, 1993 @ 10:03 am,
Date of analysis: Oct 15, 1993
Date of Report: Oct 19, 1993
Com ound Concentration Units L*
Benzene ND mgIKg (ppm) 0,005
Toluene ND mgIKg (ppm) 0,005
Ethylbenzene ND mgIKg (ppm) 0,005
X lenes ND m m 0,005
TPH gasoline ND mgIKg (ppm) 0.1
TPH diesel ND m m 0.1
*PQL = Practical Quantitation Limit
, ØL-l)
Rafael Espinosa Leniz, Ph.D,
Laboratory Director,
.
.
.
11111111111
flllll....· ."11111111
HALCYON
~JLaboratorítS ·f
1701 WestwAnd Dr. Suite 103
Bakersfield, (;A 93301
Certified bl,l the State of Califurnia Department of Health Services
Lðb«ot«Y # .~~
Phone: 805-328-0962, Fax: 805-328-1129
,dill 1 " Ilh.
Report 0' Analysis
Test: 80I5m/8020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 Westwind Dr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -6-40
Matrix: Soil
Analyst: MCM
Lab #: 93A276
Date of sampling: Oct 13, 1993 @ 10:21 am.
Date of analysis: Oct 15, 1993
Date of Report: Oct 19, 1993
Com ound Concentration Units L*
Benzene ND mgIKg (ppm) 0,005
Toluene ND mgJKg (ppm) 0,005
Ethylbenzene ND mgIKg (ppm) 0.005
X lenes ND m 0.005
TPH gasoline 1.8 mgIKg (ppm) 0.1
TPH diesel ND m m 0,1
*PQL = Practical Quantitation Limit
~é-7
Rafael Espinosa Leniz, Ph,D.
Laboratory Director.
·
·
·
~ -
11111111111
1111111 t'0 0"11111111
HALCYON
~1..ab(JratorítS' ·1
Certified bV the State of California Department of Health Services
LðbU"ðt«" 1# ..;þ~
1701 Westwind Dr. Suite 103
Bakersfield, <:A 93301
Phone: 805-328-0962, Fax: 805-328-1129
,tlllllllllh,
Report of AnGlysis
Test: 8015mJ8020/5030 Total Petroleum Hydrocarbons
cmd BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr. Suite 101
Bakersfiel~ CA 93301
Contact person: Patrick MCCullough
Sample: V -6-45
Matrix: Soil
Analyst: MCM
Lab #: 93A277
Date of sampling: Oct 13, 1993 @ 10:37 am,
Date of analysis: Oct 15, 1993
Date of Report: Oct 19, 1993
Com und Concentration Units P L*
Benzene ND mg/Kg (ppm) 0,005
Toluene ND mgIK.g (ppm) 0,005
Ethylbenzene ND mg/Kg (ppm) 0,005
X lenes 0,010 m m 0,005
TPH gasoline 0.5 mgIKg (ppm) 0.1
TPH diesel ND m m 0,1
*PQL = Practical Quantitation Limit
~0
Rafael Espinosa Leniz, Ph,D.
Laboratory Director,
·
·
·
Certified by the StClte of California Deportment of Health Services
LðbU"ðtu-y # .<)~
11111111111 .
11111111'" "'11111111
HALCYON
~JLabo rat 0 ríeS-.f
1701 Westwlnd Dr. Suite 103
Bakersfield, ~A 93301
Phone: 805-328-0962, Fax: 805·328·\129
,lIlllllllh.
Report o' Analysis
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V-6-50
Matrix: Soil
Analyst: MCM
Lab #: 93A278
Date of sampling: Oct 13, 1993 @ 10:54 am,
Date of analysis: Oct 15, 1993
Date of Report: Oct 19, 1993
Com ound
Concentration
Units
Benzene
Toluene
Ethylbenzene
X lenes
ND
ND
ND
ND
mglKg (ppm)
mgIKg (ppm)
mgIKg (ppm)
m m
TPH gasoline ND
TPH diesel ND
*PQL = Practical Quantitation Limit
.~~
Rafael Espinosa Leniz, Ph,D,
Laboratory Director.
L*
0,03
0,03
0,03
0.03
0,5
0.5
·
·
·
11111111111
1111111"'. "'11111111
HALCYON
~JLaboratorítS' .(
Certified bt,l the SlCIte of California Deoartment of Health Services
LOb«otc:>n' It .~~
1701 Westwlnd Dr. Suite 103
Bakersfield, CA 93301
Phone: 805-328-0962, Fax: 805-328-1129
,dill Illh,
Report o' AnalysIs
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr. Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V-6-55
Matrix: Soil
Analyst MCM
Lab #: 93A279
Date of sampling: Oct 13, 1993 @ 11:10 am.
Date of analysis: Oct 18, 1993
Date of Report: Oct 19, 1993
Com ound Concentration Units L*
Benzene ND mgIKg (ppm) 0,005
Toluene 0,009 mglKg (ppm) 0,005
Ethylbenzene ND mgIKg (ppm) 0,005
X lenes 0,015 m 0,005
TPH gasoline 3,9 mW!(g (ppm) 0.1
TPH diesel ND m m 0,1
*PQL = Practical Quantitation Limit
R4~Ph.D.
Laboratory Director.
.
.
.
11111111111
1111111"'- -"11111111
HALCYON
)JLaboratorítS .
Certified by the Stele of Calilbrnia Department of Health Services
Lðbu'ðt4:O' II .~~
1701 Westwlnd Dr. Suite 103
Bakersfield, (;A 83301
phone: 805-328-0962, Pax: 805-328-1129
,lIlllllllh.
Report o' Analysis
Test: 8015mJ8020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -6-70
Matrix: Soil
Analyst MCM
Lab #: 93A280
Date of sampling: Oct 13,1993 @ 12:16 pm,
Date of analysis: Oct 18, 1993
Date of Report: Oct 19, 1993
Com ound Concentration Units L*
Benzene ND mglKg (ppm) 0,005
Toluene ND mgIKg (ppm) 0,005
Ethylbenzene ND mgIKg (ppm) 0,005
X lenes ND m m 0.005
TPH gasoline ND mgIKg (ppm) 0.1
TPH diesel ND m m 0.1
*PQL = Practical Quantitation Limit
/Ø//0
Rafael Espinosa Leniz, Ph,D.
Laboratory Director,
.
.
.
11111111111
1111111.... "111111111
HALCYON
IJLabnratorítS' ·1
Certifìød by the SIDle of Calilbrnia Deportment of Health Services
LðlN:filf.a'y #I .c;)~
1701 \festwlnd Dr. Suite 103
Bakersfield, ~A 93301
Phone: 805-328-0962, Fax: 805-328-1129
Report o' AnalysIs
Test: 8015m18020/5030 Total Petroleum Hydrocarbons
and BTEX's by Purge and Trap
Company: Aquageosciences
1701 WestwindDr, Suite 101
Bakersfield, CA 93301
Contact person: Patrick MCCullough
Sample: V -6-80
Matrix: Soil
Analyst: MCM
Lab #: 93A281
Date of sampling: Oct 13, 1993 @ 13:00 pm.
Date of analysis: Oct 18, 1993
Date of Report: Oct 19, 1993
Com und Concentration Units L*
Benzene ND mgIKg (ppm) 0,005
Toluene ND mgIKg (ppm) 0,005
Ethylbenzene ND mgIKg (ppm) 0.005 '
X lenes ND m m 0.005
TPH gasoline ND mgIKg (ppm) 0.1
TPH diesel ND 0,1
*PQL = Practical Quantitation Limit
~~
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
.
APPENDIX C
Confirmation Boring Logs
.
.
f'-.
{)
~
5
I
6" Date 5/18/94
___ Slot size: _______
Material type: _
Project Geologist Patrick McCullouQh
Total depth of boring: ___JJ..9~ Diameter of boring: -
Casing diameter '___________ Length:
Screen diameter: ___ Length:
Drilling) company: _ Soils Engineering, Inc,
Method used: _ Hollow Stern Auger
Signature of Registered Professional: p, Goalwin
Registratioñ-No.: 4779 ___ State: __ CA
DEPT SAMPLE LOWS F I D U.S.C.S DESCRIPTION LITHO WELL
... CODE TYPE CON
NO, Surface
-0-
-2-
· . . .
-4- 4 · . . .
SAND - some gravel, gravel to sand · . . .
4 0 SP · . . .
grade, red/org., damp, no odor, no · . . .
-6- 4 · . . .
stain · . . .
· . . .
-8- · . . .
· . . .
22 · . . .
-10- SAND - some gravel, gravel to sand · . . .
11 950 SP · . . .
grade, red/org" dry, moderate odor, · . . .
3 · . . .
-12- slight stain · . . .
· . . .
· . . .
-14- 15
57 575 SM SAND - some silt, sand to silt
-16- grade, gray, damp, mod, to strong
odor, no stain
-18-
11 SAND - some silt, sand to silt
-20- 25 1000 SM
grade, gray, damp, strong odor, no
-22- 26 of:- stain
Key
~ nrrn ~ E:J .. I~ (ll
SW ML CL SP SM SC GP
AQuaGeosciences. Inc.
701 Westwind Drive Suite 103
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax 328-1129
Title
PENCE PETROLEUM
901 E, TRUXTUN AVENUE
BAKERSFIELD, CALIFORNIA
CONFIRMATION BORING C-1
Exhibit
5
DEPT SAMPLE BLOW F I USCS LITHO WELL
NO, .I, r:, CODE DESCRIPTION TYPE CONST.
-24- 5 SAND - some silt, sand to silt grade,
10 850 SM
-26- 13 red/org" damp, strong odor, no
stain
-28- · . . . .
· . . . .
23 SAND - some gravel, gravel to sand · . . . .
-30- 1000 SP · . . . .
38 grade, red/org" damp, strong · . . . .
+ · . . . .
24 petroleum odor, no stain · . . . .
-32- · . . . .
· . . . .
-34- 12
23 1000 SM SAND - some silt, med, sand to silt
-36- grade, red/org" damp, strong
27 + odor, no stain
-38-
12 · . . . .
000 SP SAND - coarse sand to med. grade, · . . . .
-40- 26 · . . . .
+ red/org., dry, strong odor, no stain · . . . .
34 · . . . .
-42- · . . . .
· . . . .
-44- 15 SAND - some silt, med, sand to silt
28 000 SM grade, brown, damp, strong odor,
-46- +
31 no stain
-48-
8 SILT - some sand, trace clay, fine
-50- 16 000 ML
24 + to clay grade, brown, sltly, damp,
-52- strong odor, no stain
-54- 7 SILT - some sand, trace clay, fine to
18 1000 ML
-56- 42 + clay, reddis/brn" dry, strong odor,
no stain
Title
PENCE PETROLEUM
901 E, TRUXTUN AVENUE
BAKERSFIELD, CALIFORNIA
CONFIRMATION BORING C-1
i
701 Wes1twind Drive Suite 103
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax 328-1129
Exhibit
5
Page 2
DEPT SAMPLE LOW USCS LITHO WELL
NO. F.I,D, CODE DESCRIPTION TYPE CON ST.
-58-
15 SILT - some sand, trace clay, fine to
-60- 42 1000 ML clay grade, brown, sltly, damp,
43 + strong odor, no stain
-62-
-64- 18
57 000 MUSM SAND/SILT - med, to silt grade,
-66- + brn.lorg" dry, strong odor, no
stain
-68- 16
-70- 29 000 SM SAND - some silt, med. to silt,
40 + brn.lorg" dry, strong odor, no stain
-72-
-74- 9 SAND - some silt, trace clay/gravel,
22 000 SM gravel to clay grade, reddish brn"
-76- 25 + damp, strong odor, no stain
-78- 12 · . . . .
SAND - med, to fine grade, · . . . .
-80- 24 1000 SP reddish/org" dry, strong odor, no · . . . .
· . . . .
43 + stain · . . . .
· . . . .
-82- · . . . .
· . . . .
-84- 21
32 ML SILT - some sand, trace clay, fine
000 to clay grade, brn" damp,
-86- 34 + moderate odor, no stain
-88- 13 SILT - some sand, some clay, very
1000 ML
-90- 30 + fine to silt grade, brown, damp,
34 strong odor, no stain
Title
PENCE PETROLEUM
901 E, TRUXTUN AVENUE
BAKERSFIELD, CALIFORNIA
CONFIRMATION BORING C-1
701 Westwind Drive Suite 103
Bakersfield, California 93301
Telephone: (805) 328-0962
Fax 328-1129
Exhibit
5
Page 3
DEPT SAMPLE
NO,
LOW PI ) USCS
.. . CODE
DESCRIPTION
-92-
-94-
-96-
-98-
100-
-102-
-1 04-
106-
114-
116-
118-
120-
122-
124-
AQuaGeosciences, Inc,
701 Westwind Drive Suite 103
akersfield, California 93301
Telephone: (805) 328-0962
Fax 328-1129
9 SAND - some silt, trace gravel,
30 000 SM gravel to silt grade, org.lbrn"
37 + damp, strong odor, no stain
15 SM SAND - some silt, very coarse to
26 1000 silt grade, org.lbrn., dry, strong
23 + odor, no stain
18 SAND - some silt, coarse to silt
41 1000 SM
45 + grade, org.lbrn" damp, strong odor,
no stain
31 .. SAND - some silt, med, to silt
1000 SM/ML
51 grade, org.lbrn" damp, strong
+ odor, no stain
END OF BORING @ 11 0'
LITHO WELL
TYPE CONST,
Title
PENCE PETROLEUM
901 E, TRUXTUN AVENUE
BAKERSFIELD, CALIFORNIA
CONFIRMATION BORING C-1
Exhibit
5
Page 4
I .
APPENDIX D
Confirmation Boring
.
Lab Reports
.. and
Chain-oj-Custody
.
1llllm/llb
-.:I'li"". , .."qlllll~111
¡ I HAlCYON ~
J.i1Uornlorirs" !
.
CHAIN OF CUSTODY
1701 Westwind Dr., Suite 103., Bakersfield, CA 93301
.
AND ANALYSIS REQUEST
805-328-0962
CLIENT NAME A~,... &-t:ofc ,'e"c.<:J .::L;,c . ANALYSES REQUESTED REMARKS
PROJECT NAME I ~ ,
"¿><:::. /,-0 k~-. ~
",co:: S 0
ADDRESS \!) ~ '"
~,,~
PROJECT MANAGER'p /"1 rt'.. /hq~¿ PHONE .l~¥-o,~¿ ~
FAX g "~
../
SAMPLER NAME A- /-,..., ~c ~ /'-7 r ('.. /~ 4<: ,( I, ~ \~
SAMPLE DA TEl TI ME SAMPLE DESCRIPTt"'ON, IDENTIFICATION J"
, SAMPLED Mat r I x, container, etc.., 0. \, ~
C¡'IA'-I7Lf o8ýr So.'¡ C1--.) ,- ,/ 1/
rÞp/~y
o 'i.r J.... /
9L¡/)47'J r//,n}l" Jo.' I I L f - /0 ' ./ ./
O?oý ,
7¿¡/.} Lf76 /h~Ay JfJ:/ C1- /s- I' v"" -
.
OCj/J , .;:).0 I
Cf4 JJ Ll77 r)/'-/9 Y Jo : /. C:t- V ,/
0?j.?~y ,
1'1 t¡ Ii If 7i{ ~/£. So;/. c.:L - dl..S I ....- ./'
O'JJ I
19t¡/}LJR .r~r'Av Sü;! c 1. - :J<.J ,- (/ - -
09j(. hv ,
9'1J}4ffò .Sc ·f CJ-..Js/ ~ '/
r. /1 0,
íooo ."
nJ 11It.¡?¡ / r~"Ay )0/'1 CL- ~o I V ...... ¡.-
77/7
/0/'8 /
9 t¡ JJ l/ff;? .r//Phy Sc.·/ C1 - Y.r ic...- -
. J
/ð]7 ,
C(/ /,'1' Jr// Jo: I C1 -s-o v v'
:?f") .-hl'flY
/0.%/ /
9,-;' ,/,-V I .r /IA~ So:1 C.L- s..s; l/ 1--
'F/ 'v 7
REUNQUISHED BY c7~ ~~~ Date a time RELINQUISHED BY Da te a time
SIGNA TURE AND PRINTED NAME ~~ ~,. c.. k /-1 ;~, ( SIGNA TURE AND PRINTED NAME
Æ-CEIVED BY. 0/7 æ7- y-- RECEIVED BY.
SIGNATURE AND PRItfr"~ N;ME ·A~k;:;1 C.//I}~Vt>n.. SIGNA TURE AND PRINTED NAME
r
1IIIImlilb
.¡liliÍiAtcY():NIII~1111
'I::tH~oralOnr51~¡
.
CHAIN OF CUSTODY
1701 Westwind Dr., Suite 103., Bakersfield, CA 93301
.
AND ANALYSIS REQUEST
805-328-0962
CLIENT NAME AI.IÜ' &c.oJc.,'.-_ Coo f ...L,., <- ANALYSES REQUESTED REMARKS
7 ;'
PROJECT NAME ?e,n c. <- Pc / ''0 Ie"",....
t
ADDRES6 70/ E -¡--;"c., y 7£. ~ 4M4- ~I
~~ 0
PHONEJ 2.?- o,~ ~ ~
PROJECT MANAGER P. '/1 C( Co /~"C t FAX $ ~
... .¡.. ~ 1'\
SAMPLER NAME Pct.-'¡::,'c. ¿.. /'-f (("//u'1'õ( ~ ~
SAMPLE DA TEl TI ME SAMPLE DE6CRIPÎION, IDENTIFICATION ~
. SAMPLED Matrix, container, etc... "
Qt¡,44g-5 1//9 C-1- ~o I' V
.r/n /9V Jo.'/ V
I 1: /~ ./ L/
ir'", , ,,, t..¡~ Su: I C..2- ~.r ./
, "7/" r", 'SIe
/Joo ;' ....
19</Atfff::¡ <"" /0 /9"- JtJ,-¡ C..l - 7ó ./ ¡.........
QL/J)c¡5f/ /J/~ ./ I........~
c::~o /çy .Jú,· J C..z. - 7.s- ,/
IJJ'.s- '"
9L/j)tf?M r-A./,v Jo,"¡ C1- ã'o V t./ ....
/~~ /
Ê__""" 'qo .n ~ 1/<;11' jo:/ C:J. -. is'' /" ",-
/ '/'11 ,
- " 'r', J . <-ÅJÞ/9I' So,' ( C..2 - 9~ I' ,.,/ /'
~/""or ..., 7
/~~,4~ ,
91/ IJ (/5:l s:; /,/ JUl'! C1- 9.s' / /
/q: /^u / ./
qt¡¡¡ LH':? .j /- So,' I c...1 - /00- ./'
:..-- /(;/ L /
19t/,4l/QQ .;//1'/9ý fb.' I , ./
C-L - /dS -'
~~, Jl'r ./
C¡t¡/J lftï? ~ 6- /;/e;" J 0 " / c..1- //Q " ./ -
REUNQUISHED BY cJ?~ ~ V ¿3?~ Dete . time RELINQUISHED BY De te . time
SIGNATURE AND PRINTED 'NÀME /<r,...,'c, k /1 ~C:/¡(...,< SIGNA TURE AND PRINTED NAME
ftCEIVED BY';¡¡¡C; "U'~ v RECEIVED BY,
SIGNA TURE AND PR1N1ED WAME ,. MC '"-h,,..,, ÀV~ SIGNA TURE AND PRINTED NAME
~ /
.
11111111111
. .11 IÍÏÄLCyON111111
.. aLaboratori£~tlll
,illlll Ilh.
Certified by the State of California Department of Health Services
Laba"ataY # .gþ~
1701 Westwind Dr. Suite 103
Bakersfield, c.~ 93301
Phone: 805-328-0962, Fax: 805-328-1129
Report o' Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-j'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A474
Date of sampling: May 18, 1994
Date of analysis: May 26, 1994
Date of Report: June 1, 1994
.
Com ound
Concentration
PQL*
Benzene
Toluene
Ethylbenzene
X lenes
TPH gasoline ND
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
.
-~~
Rafael Espinosa Leniz, Ph, D,
. Laboratory Director,
Units
ND
ND
ND
ND
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K. m)
0,005
0,005
0.005
0.005
0,5
0,5
·
11111111111
11111111'" , "'111111111'
,lLUCY'ON I
1,'JLaboratoríe~ft J
,dill lilli,
Cerbfied b\,! the State of California Deportment of Health Services
lLa!b4)lrat4)!rY # .<}'1()
1701 Westwlnd Dr. Suite 103
Bakersfield, C,,"- 93301
Phone: 805-328:0962, Fax: 805-328-1129
Report o' Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: CI-10'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A475
Date of sampling: May 18, 1994
Date of analysis: May 26, 1994
Date of Report: June 1, 1994
·
Com ound
Concentration
Units
PQL*
Benzene
Toluene
Ethylbenzene
X lenes
ND
0,005
ND
0,033
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K m)
0.005
0,005
0.005
0,005
TPH gasoline 1.2
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL,
NA = Not Analyzed
0.5
0.5
·
~~
Rafuel pinosa Leniz, Ph, D,
Laboratory Director,
.
.
.
11111111111
1111111"" - -"11111111
HALCYON
)'l.abo r atortes.j
CertiAød by the State of California Department of Health Services
lLab£llrat«y # i<):2()
1701 Westwind Dr. Suite 103
Bakersfield, CA 93301
Phone: 805-328-0962, Fax: 805·328-1129
. dlllllllllll.
Report o' Analysis
Project Pence Petroleum
Test: S015m/S020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C1-15'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A476
Date of sampling: May IS, 1994
Date of analysis: May 26, 1994
Date of Report: June 1, 1994
Com ound
Concentration
Units
PQL*
Benzene
Toluene
Ethylbenzene
X lenes
0,06
0.63
0.68
2.4
0,05
0,05
0,05
0,05
TPH gasoline 1800,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
0,5
0.5
~?- 7
Rafael Espinosa Leniz, Ph, D,
Laboratory Director,
.
.
.
11111111111
IIIII P'" --',11111111
HALCYON
,I-nbar atDrtes .11
Certified by the State of California Deoartment of Health Services
lLðbm-at~ # 1Iq,~
1101 Westwind Dr. Suite 103
Bakersfield, CA 93301
Phone: 805-328-0962, Fax: 805-328·1129
Report o' Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: CI-20'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A477
Date of sampling: May 18, 1994
Date of analysis: May 27, 1994
Date of Report: June 1, 1994
Com ound
Concentration
Units
P L*
Benzene
Toluene
Ethylbenzene
X lenes
ND
1.5
1.0
5,9
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K m)
0,2
0,2
0.2
0,2
TPH gasoline 520,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL,
NA = Not Analyzed
20,
20,
~~
Rafael Espinosa Leniz, Ph,D,
Laboratory Director.
·
1IIIIIIIIh
IIIII"~'" , . -"1111111'1
HALCYON
¡laboratoríeS.,I,
¡ tlllllllllllllI,
CertiAed by the State of California Department of Health Services
lLðbC) n)t~()f"" # .<}~
1701 Westwind Dr. Suite 103
Bakersfield!, CA 93301
Phone: 805-328-0962, Fax: 805-328-1l29
Report 0' AnGlysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-25'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A478
Date of sampling: May 18, 1994
Date of analysis: May 27, 1994
Date of Report: June 1, 1994
·
Com ound
Concentration
Units
PQL*
Benzene
Toluene
Ethy lbenzene
X lenes
0.4
3.3
2,5
14,
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K m)
0,2
0.2
0.2
0.2
TPH gasoline 3000,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
20.
20.
·
~.
Rafael ES~Leniz, Ph.D.
Laboratory Director.
.
11111111111
IIIIIIP'" -"11111111
HALCYON
IJLaboratorítS' .j
,
Certined by the State of California Department of Health Services
lLabaatu-y # .<)~
1701 Westwind Dr. Suite 103
Bakersfield, C.i\. 93301
Phone: 805-328-0962, Fax: 805·328·1129
,dill 11111 h.
Report o' Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-30'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A479
Date of sampling: May 18, 1994
Date of analysis: May 27, 1994
Date of Report: June 1, 1994
.
Com ound
Concentration
Units
PQL*
Benzene
Toluene
Ethylbenzene
X lenes
ND
2.5
1.7
9.3
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K m)
0,5
0.5
0,5
0.5
TPH gasoline 1200,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
50,
50,
~~niz, Ph.D.
. Laboratory Director,
.
tllllllllh
I 1111111;1'" ""111111\
HALC"YON '
.k1Laboratorits
¡'llllllllllllllllo
CertiAed by the State of California Department of Health Services
LðbtÐl"ðWlnt # 1I~'2(>
1701 "Testwind Dr. Suite 103
Bakersfield, ~A 93301
Phone: 805·328·0002, Fax: 805-328-1129
Report of RAcalYll1
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEXls by Purge and Trap Sample: Cl-35'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A480
Date of sampling: May 18, 1994
Date of analysis: May 27, 1994
Date of Report: June 1, 1994
.
Com ound
Concentration
Benzene
Toluene
Ethylbenzene
Xylenes
ND
1.5
ND
10.
Units PQL*
mg/Kg (ppm) 0.5
mg/Kg (ppm) 0.5
mg/Kg (ppm) 0.5
m 0.5
mg/Kg (ppm) 50.
m m) 50.
TPH gasoline 690.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
.
~?7
-
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
.
11111111111
II 1IIIilll'" "'1\1111111
J ILUCYO,N I
i ìJLaboratorltS.¡f
,111111111111 .
CertiAed by the State of California Department of Health Services
lLðOOr-ðtory # N~
1701 Westwind Dr. Suite 103
Bakersfield, C.!\. 93301
Phone: 805-328-0962, Fax: 805-328-1129
Report o' Analysis
:Project Pence Petroleum
Test: 8015m18020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-40'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A481
Date of sampling: May 18, 1994
Date of analysis: May 27, 1994
Date of Report: June 1, 1994
.
Com ound
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
ND
0.5
ND
7.8
Units P L*
mg/Kg (ppln) 0.5
mg/Kg (ppm) 0.5
mg/Kg (ppm) 0.5
m g m) 0.5
mg/Kg (ppm) 50.
m m) 50.
TPH gasoline 410.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
.
~~
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
.
11111111111
11111111'" "'11111111 1
HALCYON
¡IJLabor ato rits.t
Certifîed by the State of California Department of Health Services
lLab£llratffY # ~O}'2()
1701 Westwitld Dr. Suite 103
Bakersfield., <;i\. 93301
Phone: 805-328-0962, Fax: 805-328-1129
. dill Illh.
Report 0' Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C 1-45'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A482
Date of sampling: May 18, 1994
Date of analysis: May 31, 1994
Date of Report: June 1, 1994
.
Com ound
Coricentration
Units
PQL*
Benzene
Toluene
Ethylbenzene
X lenes
0.8
2,1
1.2
7,0
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K m)
0,5
0.5
0,5
0.5
TPH gasoline 450,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL,
NA = Not Analyzed
50,
50,
.
~~
Rafael Espinosa Leniz, Ph, D,
Laboratory Director,
.
11111111111
11111111'" -"11111111
" HALCYON
"JLabor atorírs ·(1
Certified by the State of California Department of Health Services
lLa!b4)lrat«y # 'Ç)~
1701 Westwind Dr. Suite 103
Bakersfield, CA 93301
Phone: 805-328-0962, Fax: 805-328·lJ29
. dill IIII h,
Report o' Ancalysls
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C I-50'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A483
Date of sampling: May 18, 1994
Date of analysis: May 31, 1994
Date of Report: June 1, 1994
.
Com ound
Concentration
Units
PQL*
Benzene
Toluene
Ethylbenzene
X lenes
1.0
2.9
2.6
12,
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m /K m)
0,5
0,5
0,5
0,5
TPH gasoline 1700.
TPH diesel NA
*PQL = Practical Quantitation Limit.
ND = No detected at given PQL,
NA = Not Analyzed
50.
50,
~¿-¿
Rafael Espinosa Leniz, Ph,D,
. Laboratory Director.
.
.
.
11111111111
1111111"" .' , "'11111111
, HALCYON
k1Laboratorirs..
Certined by the State of California Department of Health Services
lLab«atu"" # .<}'1()
1701 Westwand Dr. Suite 103
Bakersfield, ~A 93301
Phone: 805~32B·0962, Fax: 805·328·1129
,dill 1 ·11111.
Report o' AnGlysls
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-55'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A484
Date of sampling: May 18, 1994
Date of analysis: May 31, 1994
Date of Report: June 1, 1994
Com ound
Units
PQL*
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
1.5
3,1
2,9
11.
0.5
0,5
0.5
0,5
TPH gasoline 2300.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL,
NA = Not Analyzed
50.
50.
~h
Rafael Espinosa Leniz, Ph,D,
Laboratory Director,
.
11111111111
1111111"" """111111
'HALCYON '
ìJLaboratoric1), '
,1111111111111111,
Certif,ed b~1 the State of California Departme'ìt of Health Services
lLðlbu-ðt,t)Ir'Y # œ<Jt~
1701 't'estwitul Itr. Suite 103
Bnkelosfield!, Ci\. 93301
Phone: 805-328-0962, Fax: 805-328-1I~'9
Report of AnalysIs
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-60'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A485
Date of sampling: May 18, 1994
Date of analysis: May 31, 1994
Date of Report: June 2, 1994
.
Com ound
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
TPH gasoline 1100,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
~?--;
Rafael Espinosa Leniz, Ph.D.
. Laboratory Director.
1.0
1.8
2.4
3.1
Units P L*
mg/Kg (ppm) 0.5
mg/Kg (ppm) 0.5
mg/Kg (ppm) 0.5
m m 0.5
mgfKg (ppm) 50.
m m 50.
.
.
.
11111111111
'11111111"" ""1111111
,I I-IALCYO,N ' ,
I aLaboratortt~'I,¡
, dll III 11111,
CertiAed bV the State of California Departmelìt of Health Services
lLðlb«ðWIrY # IIÇJ:lf)
1701 't'e~'¡;,,{ind 'Jr. Suite 10:1
Bnkel~field~ Ci\. 93301
Phone: 805-328-0962, Fax: 805-328-11:;:''9
Report of ARalysls
Project Pence Petroleum
Test: 8015mJ8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-65'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A486
Date of sampling: May 18, 1994
Date of analysis: May 31, 1994
Date of Report: June 2, 1994
Com ound
Concentration
Units PQL*
mgIKg (ppm) 0.5
mgIKg (ppm) 0,5
mg/Kg (ppm) 0.5
m m 0,5
mgIKg (ppm) 50.
m m 50,
Benzene
Toluene
Ethylbenzene
X lenes
ND
ND
ND
1.0
TPH gasoline 100,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
~~
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
.
.
.
11111111111
i II IIIii' , ""'111111
I II· HALCYON .
Ijalaboratorits)~
,II 11111111111h.
Certinød by the State of CaliFornia Department of Health Services
lLðlbOrðt«y # .<)~()
1701 't'estwind IIr. Suite 10:1
Bnkel~field!þ Cl\. 93301
Phone: 805-328-0962, Fax: 805-328-11::''9
Report of Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: Cl-70'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A487
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
Com ound
Concentration
Units L*
mg/Kg (ppm) 0,2
mg/Kg (ppm) 0,2
mg/Kg (ppm) 0,2
m m 0.2
mg/Kg (ppm) 20.
m m 50,
Benzene
Toluene
Ethylbenzene
X lenes
0.5
1.3
0.8
3.8
TPH gasoline 380.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL,
NA = Not Analyzed
~0
Rafael Espinosa Leniz, Ph.D.
Laboratory Director,
·
11111111111
111111111'. . "'1'11111
'HAI~CYON '
I JaLaboratorítS' ,j
,till Illh,
Certified by trle Stote of California Department of Health Services
lLðlb«at«J/ # IÇJ~()
1701 "esturinfl ..... Sui(,eIO:J
Bokel"Sfield!, (;1\' 93301
Phone: 805-328-0962, Fax: 805-328-11:''9
Report of AnQlysls
Project Pence Petroleum
Test: 8015mJ8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C 1-75'
Company: Aquageosciences Matrix: Soil
1701 WestwindDr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A488
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
·
Benzene
Toluene
Ethylbenzene
X lenes
0.5
1.2
0.7
2.3
Units P L*
mglKg (ppm) 0.2
mgIKg (ppm) 0,2
mgIKg (ppm) 0,2
m m 0.2
mg/Kg (ppm) 20,
m m 50,
Com ound
Concentration
TPH gasoline 130.
TPH diesel NA
*PQL = Practical Quantitation Limit
Nb = No detected at given PQL,
NA = Not Analyzed
·
~0
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
.
.
.
11111111111
111111'1". . ""111111
' HAIACYON "
. aLaboratorits,
Certined by the State of California DepmtmelÎt of Health Services
lLðlbttðt:or~ # IIÇJ~()
1701 West.wind )Jr. Suite 10:1
Bakersfield, C;\. 93301
Phone: 805-328-0962, Fax: 805-328-1129
, dll 1111 Illh.
Report o' Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C 1-80'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A489
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
Com ound
Units PQL*
mgfKg (ppm) 0,2
mg/Kg (ppm) 0,2
mg/Kg (ppm) 0,2
m 0.2
mWKg (ppm) 20,
m m 50,
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
0,2
0,5
0.2
1.5
TPH gasoline 80.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL,
NA = Not Analyzed
~0
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
.
I·
.
IIIIIIIIII
III Illiill,3'" . - "',11111111,111
. HAl.CYON ..11
III aLaboratorit~1 ,I
,dllllllllll,
CertiAed b~1 ~'Ie State of California Department of Health Selvices
lLðlbocðt,()!rY # IIÇJ2(J
17..1 't'estwinfl IIr. Suite )0:)
Bakersfield, Ci\. 93301
Phone: 805-328-0962, Fax: 805·328-11::'9
Report of Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: CI-85'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
BakersfielcL CA 93301
Contact person: Patrick MCCullough Lab #: 94A490
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
Com ound
Units P L*
mgIKg (ppm) 0.2
mg/Kg (ppm) 0,2
mgIKg (ppm) 0.2
m m 0,2
mg/Kg (ppm) 20,
m m 20.
:!
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
0.4
1.5
1.4
8,2
I
I
I
),
¡
TPH gasoline 1900.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
~0
Rafael Espinosa Leniz, Ph,D.
Laboratory Director.
'i
¡'
.
11111111111
! IIlla..' "'111111111
HALCYON' " ¡
. aLaboratorit£) II
~ I
CertiAe,d b~1 the State of California Department of Health Sef\1ces
lLðlbttoÜt<OIr,)' # ~Ç):2{'
1701 "e~"'willd 1).-. Suit,e 10:1
Bakersfield!, Ci~ 93301
Phone: 805-328-0962, Fax: 805-328-1129
, dllllllllll ¡,
Report of AnalysIs
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C 1-90'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A491
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
.
Benzene
Toluene
Ethylbenzene
X lenes
0.4
1.3
0,8
5,6
Units PQL*
mg/Kg (ppm) 0,2
mg/Kg (ppm) 0,2
mg/Kg (ppm) 0,2
m m 0,2
mg/Kg (ppm) 20.
m m 20.
Com ound
Concentration
TPH gasoline 1200.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
.
,
~~
Rafael Espinosa eniz, Ph.D.
Laboratory Director.
·
11111111111
II IIill"" ""1111111
HALCYON '
. 'iJLaboratorit~
I
,11111.1111.11111.
Certified by the State of California Deportment of Health Services
lLðlÞu-atU-y # IIÇJ2f:·
1701 Westurind IJr. SlIite 10:1
Bakelosí'ield, Ci\. 93301
Phone: 805-328-0962, Fax: 805-328-11;;:.'9
Report of Analysis
Project Pence Petroleum
Test: 8015m18020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C 1-95'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 9330 I
Contact person: Patrick MCCullough Lab #: 94A492
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
·
Com ound
Concentration
Units
P L*
Benzene
Toluene
Ethylbenzene
X lenes
0,2
1.0
0.6
4.1
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m m
0.2
0.2
0,2
0.2
TPH gasoline 650,
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL, .
NA = Not Analyzed
20.
20.
·
,
~0
Rafae Espinosa Leniz, Ph.D.
Laboratory Director.
.
.
.
11111111111
I' II I~ I"" '~, "',"111111' I
HAI,C1iON "
. . ,
¡ :hJLaboratorttS' !1 ¡
,111111111111111,
Certified bl,! d-,e State of California Department of Health Services
lLðlbu-ðtVIr'~' # 1<JJ2()
1701 'festwbul IIr. Suit,e 10:1
Bakersfield~ Ci\. 93301
Phone: 805-328-0962, Fax: 805-328-11~>g
Report of Analysis
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: C 1-1 00'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A493
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
Com ound
P L*
Concentration
Units
Benzene
Toluene
Ethylbenzene
X lenes
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m m
0.2
0.2
0.2
0.2
ND
ND
ND
0.5
TPH gasoline 40.
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
20.
20.
~~
Rafael Espinosa Leniz, Ph.D.
Laboratory Director.
·
11111111111
11111111','" , ""111111111,
r ILt\.I.CYON ., í
I ¡JLaboratoritZ,1.!
,dllllllll ¡.
CertiA0d bV the State of California Department of Health Services
lLðlb()!r,ati()n' # I<)~
17"1 Westu:hul 'Ir. Suite 10:1
Bnkel-sfield, Ci\ 93301
Phone: 805-328-0962, Fax: 805-328-11;;''9
Report 0' AnalysIs
Project Pence Petroleum
Test: 8015m/8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: CI-105'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr, Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A494
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
·
Com ound
Concentration
Units
P L*
Benzene
Toluene
Ethylbenzene
X lenes
ND
0.005
ND
0.010
mg/Kg (ppm)
mg/Kg (ppm)
mg/Kg (ppm)
m m
0,005
0.005
0,005
0,005
TPH gasoline ND
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detected at given PQL.
NA = Not Analyzed
0,5
0.5
·
~0
Rafael Espinosa Leniz, Ph.D,
Laboratory Director.
·
·
·
11111111111
11111111". . ""'IIIIJ
HAI~CYON ' ,
aLaboratoriesí
CertiAed 01.,' the State of California Departme,ìt of Health Services
ILiillbU'ðt·{)IrY # 1I<JJ2f)
1701 "est"rind IJ... Suite In:1
Bakersfield!, C¡\ 93301
Phone: 805-328-0962. Fax: 805-328-11:;''9
,dllllllll!lI.
Report of AnalysIs
Project Pence Petroleum
Test: 80 15mJ8020/5030 Total Petroleum Hydrocarbons &
BTEX's by Purge and Trap Sample: CI-II0'
Company: Aquageosciences Matrix: Soil
1701 Westwind Dr. Suite 101 Analyst: MCM
Bakersfield, CA 93301
Contact person: Patrick MCCullough Lab #: 94A495
Date of sampling: May 18, 1994
Date of analysis: June 1, 1994
Date of Report: June 2, 1994
! I
Com ound
Units P L*
mgIKg (ppm) 0,005
mglKg (ppm) 0,005
mg/Kg (ppm) 0,005
m m 0.005
mg/Kg (ppm) 0,5
m m 0.5
:1
"
I,
Ii
II
II
!I
I
,
i
¡
,I
Concentration
Benzene
Toluene
Ethylbenzene
X lenes
0.005
0,020
0.010
0,080
TPH gasoline 6,5
TPH diesel NA
*PQL = Practical Quantitation Limit
ND = No detectéd at given PQL,
NA = Not Analyzed
~
Rafael Espinos Leniz, Ph,D.
Laboratory Director.
i.
.
.
APPENDIX E
Acceptable Cumulative Soil Comtamination Levels
ifi}~::3'!:;;<" :.:>'o<~"¡~~ìþ.; '.""~-'
~\\'~~t;"~.....-..,g¡,-.;,_~.~ J..~ I
. . < -';':"='t~~. '.. ';:, . .: ' ,
" .
TABLE 2-4
BEllZEIIE
ACCEPTABLE aJIJlATIVE SOil COITAMIIlATlOI LEVELS
FOR PIIOTECTlOI OF GRCUCD WATER AT QUALIFIED SITES
Stop: Do not use this table unless the site in question has been screened using the applicability checklist (Table 2-2) for general risk appraIsal to protect ground water
/
MEAN ANNUAL INCHES PRECIPITATION
0 5,1 6,1 7,1 8,1 9.1 10,1 11,1 12,1 14,.1 16,1 ' 18.1 20,1 22.1 24,1 26,1 28,1 30,1 32,1 34,1 36,1 38,1
to 5 to 6 to 7 to 8 to 9 to 10 to 11 to 12 to 14 to /16 to 18 to 20 to 22 to 24 to 26 to 28 to 30 to 32 to 34 to 36 to 38 to 40
5-9.9 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
10-14,9 5 3 2 1 0 0 n ,-!) 0 0 0 0 0 0 0 0 0 0 0 0 0 0
15-19,9 10 10 6 3 1 07 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
20-24,9 60 40 20 10 5 2rr f' 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
25-29,9 200 100 60 30 10 7 - 3 1 -{) 0 0 0 0 0 0 0 0 0 0 0 0 0
30-34.9 800 400 200 100 40 20 10 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0
35-19,9 1000 1000 700 300 100 60 20 10 .3 1 0 0 0 0 0 0 0 0 0 0 0 0
40-44,9 1000 1000 1000 1000 400 100 80 30 '9 2 0 0 0 0 0 0 0 0 0 0 0 0
45-49,9 1000 1000 1000 1000 1000 'i00 200 100 20 4 1 1 0 0 0 0 0 0 0 0 0 0
50-54,9 1000 1000 1000 1000 1000 1000 600 200 50 9 2 2 1 1 0 0 0 0 0 0 0 0
55-59,9 1000 1000 1000 1000 1000 1000 1000 700 100 20 5 3 2 1 1 0 0 0 0 0 0 0
60-64.9 1000 1000 1000 1000 1000 1000 1000 1000 300 40 9 6 4 3 2 1 1 0 0 0 0 0
65-69,9 1000 1000 1000 1000 1000 1000 1000 1000 700 80 10 10 8 5 3 2 1 1 0 0 0 0
70-74.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 100 30 20 10 9 6 4 2 1 1 0 0 0
75-79.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 300 60 40 20 10 10 7 4 2 1 1 0 0
80-84.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 100 70 40 30 10 10 7 4 2 1 1 0
85-89,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 200 100 80 50 30 10 10 7 4 2 1 0
90-94.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 400 200 100 90 50 30 10 10 6 3 2 1
95-99.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 400 200 100 90 50 30 10 10 5 3 1
100-104,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 BOO 400 200 100 90 50 20 10 8 4 2
105-109,9 \000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 800 400 200 100 80 40 20 10 7 3
110-111,,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1 croo 1000 1000 1000 800 400 200 100 70 30 10 10 5
115-119.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 400 200 100 50 20 10 7
120-124,9 10eo 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 300 100 90 40 20 10
125-129.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 500 200 100 60 30 10
130-134.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 400 200 100 40 20
135-139.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 300 100 60 30
140-144.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 500 200 100 40
145-149.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 300 100 60
150+ 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 500 200 90
DISTANCE
TD
HIGHEST
GROOND
\lATER
FROM
SOIL
SAMPLE
IN
FEET
Note: IndivIdual concentrations for any soil sample cannot exceed 100 ppm. The numbers In thIs table do not represent soil concentratIons; they reflect the accumulatIon of
pollutant mass in contaminated soIl. These numbers can 'be derived from the LUFT manual worksheet (Table 2-3),
43
...........
'''"::.'"""'':"-. ".'-"; ~,""-~';:-~."".=-
\- ':':~_"_'_'~" .-___ .,.--_ ."'~~;=-.=-=.t..:--
I--
"~,...-. " .~ ~~~-~ ..--.=
..' .'_~' ", " ':>:~.C:,: '.
-. ..
'~~,::r_ ..
-
,:~~.;._.,-
,,---
. _, ~:;:-!::-::~ _n .
..:s::....:;.
,"",:~;,:.~,":,.'~='~"-"~. "
.,.- ..... ........-
. ;;.... ". ~ .
-. - - ..
- !--... . - -. ~
<?'R"';:~':":":.:;~'.:c:~~~~?::Þ¡~:.""~~'=.: '-':~~=::' _ .' ~-'
'. ''''''''-.',
TABLE 2-5
TOUDE
ACCEPTABLE aJIJl.ATlVE SOIL aJlTMllATUII LEVELS
FOR PROTECTlOII Of GRŒJI) "TER AT QUALIFIED SITES
Stop: Do not use this table unless the site in question has been screened using the applicability checklist (Table 2-2) for general risk appraisal to protect ground water
MEAN ANNUAL INCHES PRECIPITATION
IN
0 5.1 6.1 7,1 8,1 9.1 10,1 11.1 12,1 14,1 16.1 18,1 20.1 22.1 24,1 26.1 28,1 30,1 32,1 34,1 ]6,1 38.1
to 5 to 6 to 7 to 8 to 9 to 10 to 11 to 12 to 14 to 16 to 18 to 20 to 22 to 24 to 26 to 28 to 30 to 32 to 34 to 36 to 38 to 40
70 30 20 10 5 3 2 1 , 1
5-9.9 50 8 1 1 0 0 0 0 0 0 0 0 0
10'14,9 200 100 100 70 40 20 10 8 4 , 3 2 , 1 1 1 1 1 1 0 0 0 0
15-19.9 1000 600 400 200 100 60 30 10 10 6 4 3 3 2 2 2 1 1 1 1 0 0
20-24,9 1000 1000 1000 700 300 100 ,00 40 20 10 8 7 6 5 4 3 2 2 2 1 1 1
25-29.9 1000 1Mn 1000 1000 1000 500 200 100 50 20 10 10 10 '9 7 5 4 3 2 2 1 ' ,
30-34,9 1000 1000 1000 1000 1000 1000 600 200 100 ' 50 30 20 20 10 10 9 7 5 4 3 2 1
35-39.9 1000 1000 1000 1000 1000 1000 1000 600 200 100 60 40 30 20 20 10 10 8 6 4 3 2
40-44.9 1000 1000 1000 1000 1000 1000 1000 1000 600 200 100 80 60 40 30 20 10 10 9 6 4 ]
45-49,9 1000 1000 1000 1000 1000 10nO 1000 1000 1000 ,400 200 100 100 80 50 40 20 20 10 9 6 4
50-54,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 oeD 400 300 200 100 100 60 40 30 20 10 9 5
55-59,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 ' oro 800 500 300 200 100 100 70 40 30 10 10 7
60-64,9 1000 1000 1000 1000 1000 1000 '1000 1000 1000 00 1000 1000 600 400 200 100 100 70 40 20 10 10
65-69,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 000 1000 1000 1000 700 400 300 100 ' 100 60 40 20 1
70-74,9 1000 10DO 1000 1000 1000 10M 1000 1000 1000 100r 1000 1000 1000 1000 800 400 200 100 100 50 30 ~
75-79 9 1000 fOOD 1000 1000 1000 1000 1000 1000 1000 100 1000 100ti 1000 1000 1000 800 400 200 100 80 40
80-8io 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 400 200 100 60
85-89,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 300 100 80 4
90-94,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 400 200 100 50
95-99,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 '1000 1000 1000 1000 700 300 100 ,70
100- 104 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 400 200 90
105-109,9 1000 1000 1000 1000 1000 1000 1000 1000 ' 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 200 1
110-114,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 400 1
115,119,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 500 2
120-124,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 200
125-129.9 1000 1000 1000 1000 1000 ''-000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 JOOI
130-134,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 ·1000 '. 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 500
135-139.9 1000 1000 1000 1000 1000 ,1000 1000 1000 1000 ·1000 ' 1000 1000 1000 ' 1000 1000 1000 1000 1000 1000 1000 1000 600
140-144,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 OM
145-149 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 ' 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
150+ 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
DISTANCE
TO
HIGHEST
GROOND
\lATER
FROM
SOIL
SAMPLE
FEET
Note: Individual concentrations tor any soil sample cannot exceed 80 ppm, The numbers in this table do not represent soil concentrations; they reflect the accumulation of
pollutant mass in contaminated soil, These m.lrberacan·beder·ived"from the,lUF,T.,msnusl worksheet (Table 2-3), '
44
- ~-~ -~~---:-.- ..-,-..".:.~--~---
. .h'~ r' .~
....'
~.~.~'!~:. -..... . ~
. - ..
. ....;t...... . ~
., :'. ~
"'..c; '::::~.""~-j:~.'-':'"
.. :..~....""~'".,.~ '.' '.'i=~T'f.;'.:!
'.
!~- ..
_~: u;;.;.~::-' .""?-:~.':'~ ,.J.;.~:.; :.;.~.L.-,
'.....".... - ._:.~._-
H-'~. "'~~~'.~~"
...-;o~,~.<L...
~ . .:.:-!", .._-.~,..&..
~,.~--,..-
..
-" ..
TABLE 2-7
ETHYL8EIIZEIIE
ACCEPTABLE aJIJI.ATIVE SOil allTMlllATION lEVELS
RIt fIttOTECTICII OF GRCUI) \MYEl AT QUALIFIED SITES
Stop: Do not use this table unless the site in question has been screened using the appltcabillty checklist (Table 2·2) for general risk appraisal to protect ground water
MEAN ANNUAL INCHES PRECIPITATION
0 5,1 6.1 7,1 8.1 9.1 10,1 11.1 12.1 14.1 16.1 18.1 20,1 22.1 24.1 26,1 28,1 30.1 32.1 34.1 36,1 38.1
to 5 to 6 to 7 to 8 to 9 to 10 to 11 to 12 to 14 to 16 to 18 to 20 to 22 to 24 to 26 to 28 to 30 to 32 to 34 to 36 to 38 to 40
5-9 9 300 200 100 100 70 40 30 20 10 10 co. 10 9 8 8 7 6 6 5 5 5 4 4
10-14,9 1000 800 500 300 200 100 70 . 40 ~O '0 10 10 10 10 10 9 B B 7 6 5 Ii
15-19,9 1000 1000 1000 1000 500 300 100 90 50 /,~O 20 20 20 10 10 10 10 10 9 8 7 6
20-24.9 1000 1000 1000 1000 1000 .800 400 200 100 .60 40 30 30 20 20 20 10 10 10 10 8 7
25,29,9 1000 1000 1000 1000 1000 1000 1000 ¿DO '00 ' ·,100 7'0 50 40 40 30 20 20 10 10 10 111 ç
30-34,9 1000 1000 1000 1noo 1000 11M 111M ono 400 100 100 on 70 60 50 40 30 20 20 10 10 10
D I.ST ANCE 35-'~9, 9 1000 1000 1000 1000 1000 10001 1000 1000 BOO 300 100 100 100 90 70 50 40 30 20 20 10 10
40-44 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 ,600 ~OO 200 100 100 100 80 60 40 30 ZO ZO Ü
TO 45·49 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 400 300 200 200 100 100 80 60 40 30 20 10
-"n·54 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 500 400 300 ZOO 100 100 80 60 40 30 2Ø
HIGHEST "5·59 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 600 400 300 200 100 100 80 50 40 2ii
6O-1..t. 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 500 300 ZOO 100 100 70 50 30
GRooND 65-69,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 400 300 200 100 90 60 ¡;o
70-74,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 400 " 200 100 100 70 40
WATER 75-79 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 400 200 100 90 50
-sa-84 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 800 500 300 100 100 70
FROM 85·89,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 ' 1000 ·10no 1000 1000 1000 1000 1000 1000 700 400 200 100 ~
90·94.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 ·1000 1000 1000 1000 1000 1000 1000 900 00 300 1M 1
SOIL 95·99,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1001'1 1000 ' 1000 1000 1000 1000 1000 roo 400 200 1
1100·'04.9 1000 10 10 1000 1000 1000 100n 1000 1000 1000 1000 ¡1000 1000 1000 1000 1000 1000 1000 1000 H1l] liDO 200 100
SAMPLE 105·109.9 1000 10 0 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 300 1
110·111..9 1000 10 0 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1 Mil 1000 1000 800 400
IN 115·119 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 ' 1000 1000 1000 1000 1000 1000 1000 1000 1000 500
120-124.9 1000 1000 1000 1000 1000 1000 10M 1000 1000 ,1000 1000 1000 . 1000 1000 1000 1000 1000 1000 1000 1000 600
FEET 125-129,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 800 300
130-134 9 1000 1000 1000 1000 1000 1000 ,1000 1000 1000 " 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
135-139,9 1000 1000 1000 1000 1000 1000 ,1000 1000 1000 ' ,100Q 10nO 1000 1000 ·,1000 .1000 1000 ~1000 1000 1000 1000 1000
140-144.9 1000 1000 1000 1000 1000 :};. 1 DOl! 1000 1000 ,,1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
145-149.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
150+ 1000 1000 1000 1000 1000 1000 1000 1000 1000.;,,1000 _ .1000 1000 . 1000 1000 1000 1000 1000 1000 1000 1000 1000 900
'.
Note: Individual concentrations for any soH s8q)le camotexceed 40 ppn, The nulåer's: In thIs table do nOt represent soil concentrations; they reflect the accUILIlatfon' of
pollutant mass In contemll'\8ted soil. These numbers can:be derived from the, lUFT ,manual worksheet (Table 2-3),
46
,~ ..:-... ;~... '-.
. -.......--.....-I!
. '.. . , .,. "'J17..j~~l·"Jb....,,;~....., LI!f 1,~:~7':73~?r;,',:~',,,, ;~.~~~
>~t¡~ :":'~(~: ':~"::~~'" :~:·_~;'~:~.~.~'':'~·i~:~~~:;it ,., . :., :. .' '>'.., " ,-,;. ".
~.~~~.
. < :'. \".;,~."~.':
T.2-6
XYlEIIE
ACCEPTABLE aJU.ATlVE SOIL IDITMIIlATICII LEVELS
Fat PROTECTUII Of IìRCUI) \MTER AT CllALIFIED SITES
.
Stop: Do not use this table unless the site in question has been screened using the applicabILIty checklist (Table 2-2) for general rIsk appraisal to protect ground water
MEAN ANNUAL INCHES PRECIPITATION
IN
0 5,' 6,' 7,' 8,' 9,1 10,1 11,' 12,1 14.' 16,1 18,' 20.1 22.1 24.1 26,1 28,1 30,1 32,1 34,1 36,1 38,1
to 5 to 6 to 7 to 8 to 9 to 10 to 11 to 12 to 14 to 16 to 18 to 20 to 22 to 24 to 26 to 28 to 30 to 32 to 34 to 36 to 38 to 40
5-9,9 100 100 90 60 40 30 20 10 10 9 7 7 6 6 5 5 5 4 4 4 3 3
10-14.9 600 400 300 200 100 80 50 30 20 10 10 10 10 9 8 8 7 6 5 5 4 4
15-19,9 1000 1000 1000 600 400 200 100 -70 40 20 20 10 10 10 10 10 10 9 8 7 6 5
20-24,9 1000 1000 1000 1000 1000 600 300 100 80 50 30 30 '0 20 10 10 10 10 10 9 7 6
25-29.9 1000 1000 1000 1000 1000 1000 700 300 100 90 50 40 40 30 20 20 20 10 10 10 9 8
30-34,9 1000 1000 1000 1000 1000 1000 1000 700 300 100 90 70 60 50 40 30 20 20 10 10 10 9
35-39,9 1000 1000 1000 1000 1000 1000 1000 1000 600 200 100 100 100 80 60 50 40 30 20 20 10 10
40-44.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 500 200 200 100 100 90 70 50 40 30 20 10 10
45-49.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 800 400 300 200 100 100 100 80 60 40 30 20 10
50-54,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 . 700 500 300 200 200 100 100 80 60 40 30 20
55-59,9 1000 1000 1000 1000 1000 1000 1000 1000 " 1000 100D 1000 800 600 400 300 200 100 100 80 50 30 20
60-64 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 600 400 ~oo 200 100 100 70 40 30
65-69,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 ' 1000 1000 1000 1000 700 400 300 200 100 90 60 40
70-74.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 400 200 100 100 70 50
75-79 9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 400 200 100 90 60
80-84,9 1000 1000 1000 1000 1000 1000 ' 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 500 300 200 100 70
85-89.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 . 1000 1000 1000 1000 1000 1000 1000 700 400 200 100 90
90-94,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 ' 1000 1000 1000 1000 1000 1noo 1000 1000 600 300 100 100
95-99.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 . 10no 1000 1000 1000 1000 1000 1000 1000 800 400 200 100
100-104,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 000 1000 500 300 100
105-109.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 700 400 200
110-114,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 900 500 200
115-119,9 . 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600 300
120-124,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 800 300
125-129.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 ", ,1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 400
130-134,9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 500
135-139.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 600
140-144.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 800
145-149.9 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
150+ 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
DISTANCE
TO
HIGHEST
GROOMD
WATER
FRC»4
SOIL
SAMPLE
FEET
Note: Individual concentrations for any soil sample cannot exceed 40 ppm. The numbers In this table do not represent soil concentrations; they reflect the accumulation of
pollutant mass in contaminated soil. These numbers can be derived from the· LUFT manual worksheet (Table 2-3),
45
~..- -
.- .. . .
..-.-.....-....-. -"'-'
i ~'M ~.' . ",:. -.,-;'
. ....... _.~~. ··'i··.....:-'·,·
:,. ;.':!:;-:-:-:'
'~':' ~"~~~~r::::. -;-(:.:~~:.\.:f~"''''.'.. ·"1,'~4~~.'''.''~.._-:'~.~-:- ,~'~___'-=:="..=~o
----=-...-.,- --- -
. ... .__.. --- . .
. ., . .. ~ .. .
'-"'I'~."... .
.
APPENDIX F
Health Risk Assessment Calculations
.
.
·
·
·
APPENDIX F
RISK ASSESSMENT FOR BENZENE AT PENCE PETROLEUM
STEADY STATE VAPOR FLUX
The first step in determining the benzene exposure to occupants is the calculation of
the rate of emission of the chemical from the soil. This rate is influenced by such
factors as the degree of partitioning of benzene between vapor, soluble and non-
aqueous phases, the rate and degree of movement of the various phases through the
soil, soil properties, and environmental factors such as temperature, moisture and
surlace conditions, The general approach used, is to take the dominant transport
mechanism, in this case vapor diffusion, and model the process. The model used is
based on one developed to predict emissions from landfills by Thibodeaux and
Hwang7. It assumes steady-state fluxes for a non-diminishing source at a specific
depth below the ground surface. The applicable equations are:
F = Cv Ds
H
Where:
F=
Steady-state flux through a soil matrix from a non-diminishing
source - mg,m2-day
Vapor phase concentration of benzene at the source - mg/m3
Vapor phase diffusion coefficient through soil - m2/day
Depth below ground surface of the contamination - 15 ft (4,9 m)
Cv::
Dv=
H=
Cv = x PM w
RT
Where:
x=
Mole fraction of benzene in the free liquid hydrocarbon phase. It is
assumed to be approximately equal to the weight fraction of
benzene in residual 1,5 ppm benzene/2300 ppm TPH. The TPH
value is the concentration at 55 ft.
Pure benzene vapor pressure (atm) at temperature T - 0.10 atm
Temperature (OK) - 298 oK
Molecular weight of benzene - mg/mole - 78000
Universal gas constant - 8.2 X 10-5 m3 -atm/mole-oK
p=
T=
Mw=
R=
·
·
·
-1á..
c v = 2300 (0.10) (78000) = 207.9 mghn
(8,21 X 10-5) (298)
The following equations are derived from Millington -Quirks,
_ (Da)(a3.33)
Ds -
T2
a = E-MB
Where:
Da=
Diffusion coefficient of benzene in air - = 0,71 m2/day, This value
is calculated after Fuller et al9
Soil air content
Soil moisture content - 0.15
Porosity - 0.35
Soil bulk density - 2.0
Porosity -0.30
a=
M=
E=
B=
T=
a = E-MB = 0.35 - (0,15)(2) = 0,05
D = (0,71 )(.053.33) = 9.4 X 10-5 m2/day
s .35
Substituting C\" Os and H into the equation for steady-state flux:
F = Cv Ds
H
-5
= (207,9)(9.4 X 10 ) = 3.9 X 10-3 mg/m2-day
4.9
BENZENE CONCENTRATION IN INDOOR AIR
Knowing the vapor flux through the soil, an estimate can be made of the concentration
of benzene in the indoor air of the fictitious building which might contains a volume of
approximately 8600 ft3 (244 m3) given the sapce available, Benzene reaching the
surface under the structure may enter the building through openings in the floor, for
examlPle, cracks, joints and loose fitting pipes, The ratio of leakage to total floor area
in the average California home is 2 - 10 cm2/m2 of floor area (Grimsrud et al )10.
Commercial buildings built on concrete slabs would experience less leakage than
residences with crawl spaces, therefore, the lower value of 2
.
.
.
cm2/m2 is used in this analysis.
The ventilation rate for the building is based on studies of Fisk et a111. They estimated
that the average air exchange rate for residences at 0,5 - 0,9 air changes per hour.
The most conservative low end value 0.5 is used, A retail business with numerous
customers entering and leaving and equipped with modern ventilation systems would
experience much higher exchange rates.
The concentration of benzene in the indoor air is predicted by the equation:
FA
Cb =-
Q
Where:
Cb=
Indoor air concentration of benzene due to volatilization from the
soil - mg/m3
Vapor flux through openings in the foundation - mg/m2- hr
3.9 X 10-3 mg/m2-day X 1 day/24 hr = 1.6 X 10-4 mg/m2-hr
Leakage area = 2 cm2/m2 =0.0002 m2 openings/m2 floor area X
100 m2 floor area = 2,0 X 10-2 m2
Ventilation rate in building - m3/hr = 0.5 exchange rate/hr X 304 m3
building volume = 152 m3/hr
F=
A=
Q=
Cb = (1,6 X 10-4)(2,0 X 10-2) = 2,1 X 10-8mg/m3
152
RISK BY EXPOSURE
In order to estimate the health risks associated with exposure to benzene, a very
conservative approach was used based on a individual working at the business for an
entire occupational lifetime of 45 years, 5 days a week and 50 weeks a year with an
inhalation rate of 10 m3/hour.
Total lifetime inhaled volume = 1.13 X 105 m3
Average daily volume = 4.4 m3/day
Exposure is the product of contaminant concentration (Cb) and the air volume
breathed calculated by the following equation:
LADD = Cb AB
Bw
·
·
·
Where:
LADD =
Cb=
A=
Lifetime Average Daily Dose - mg/kg-day
Concentration of benzene in air = 5,5 X 10-8 mg/m3
Inhalation bioavailability (fraction of benzene inhaled) -
100%
Average daily volume inhaled = 4,4 m3/day
Body weight = 70 kg
B=
Bw==
-8
LADD = (2.1 X 10 ) (1) (4.4) = 1.0 X 10-9 mg/kg-day
70
The carcinogenic risk associated with a specific exposure can be estimated by the
following:
R= P'E
Where:
R=
P'=
Risk associated with a specific exposure
Benzene adjusted potency factor [mg/lifetime exposure]-1 =
1.63 X 10-8 per USEPA 1988 - derived from
epidemological studies on cancer induced leukemia,
Exposure = inhaled volume M3 X concentration
E=
R = (1.63 X 10-8)(1.13 X 105)(2,1X 10 -8) = 3.86X 1011