HomeMy WebLinkAboutMITIGATION (2)
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Environmental/Geotechnical/Engineering Services
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son. QUALITY EVALUATION
BAKERSFIElD STOCKDALE STATION·
POST OFFICE
BAKERSFIElD, CALIFORNIA
~ 3l, l4"L
LOWNEY ASSOCIATES
ENVIRONMENT AUGEOTECHNICAUENGINEERING SERVICES
405 Clyde Avenue
Mountain View, California' 94043
415-967 -2365 · 415-967-2785 (Fax)
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Environmental/Geotechnical/Engineering Services
August 31, 1992
864-9, MV082410
(
Mr. Charles W. Wren
UNITED STATES POSTAL SERVICE
SAN BRUNO FACILITIES SERVICE CENTER
850 Cherry Avenue
San Bruno, California 94099-0310
RE: son. QUALITY EVAUJATION,
BAKERSFIElD STOCKDALE
STATION POST OFFICE,
BAKERSFIElD, CALIFORNIA
~
Dear Mr. Wren:
In accordance with your request, we have performed a soil quality evaluation at the
referenced site. The scope of work performed throughout this investigation was
discussed with you and described, in our proposal dated April 9, 1992.
As discussed in the accompanying report, petroleum hydrocarbons were detected
in the soil (which consists primarily of sands) underlying the former tan1e Gasoline
concentrations in the 1,000 to 4,000 parts per million range were detected to a
depth of approximately 65 feet just south of the former tank. Soil saturated with
free product was also observed at approximately 65 feet below ground surface.
Below that depth, gasoline concentrations rapidly decreased with depth. Petroleum
hydrocarbons were not detected below 100 feet.
In our opinion, the petroleum hydrocarbon concentrations detected in the upper
65 feet of soil at the site warrant remedial measures. Installation of a remedial
system utilizing soil vapor extraction techniques is recommended.
We refer you to the text of the report for details regarding our investigation. If you
have any questions, please call.
LOWNEY ASSOOATES
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1i1. ~t0;1L
Ron L Helm
~~
Glenn A. Romig
Very truly yours,
Copies:
Addressee (5)
GAR:RLH:SIF
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\j 405 Clyde Avenue, Mountain View, California 94043 (415) 967-2365 FAX (415) 967-2785
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son. QUAUTY EVALUATION
For
BAKERSFIElD STOCKDALE STATION POST OFFICE
Bakersfield, California
To
UNITED STATES POSTAL SERVICE
SAN BRUNO FACIUTlES SERVICE CENTER
850 Cherry Avenue
San Bruno, California 94099-0310
August 1992
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TABLE OF CONTENTS
Letter of transmittal
TInE PAGE
TABLE OF CONTENTS
1.0 INTRODUCTION ................................................................'....................... 1
1.1 Purpose. . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1
1.2 Site Description/Background......................................................... 1
1.3 Scope of Work.......................................................................... 0 2
2.0 SITE INVESTIGA TIONo...:o 0 0.00........0......0................0....................... 0........... 0.. 2
2.1 Subsurface Exploration..................... ~......... 0...:............................. 2
2.2 Soil Quality...... ............................... '........... .:.0....... .... ..... ..... . . ....0. 3,
, TABLE 1. Laboratory Results July 1992.....................................,....4
3.0 CONCLUSIONS............... 0 . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .. 6
4.0 RECOMMENDATIONS... . . . . . . . . . . o. . . . . . . .. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . 0 . . . o. . . . . . . . . 0 0 . 0 . O. 8
5.0 UMITA TIONS . . . . . . . .. . 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. 9
REFERENCES
FIGURE 1- VICINI1Y MAP
FIGURE 2 - SITE PLAN
FIGURE 3 - FORMER UNDERGROUND TANK DETAIL
FIGURE 4 - GEOLOGIC CROSS-SECTION
APPENDIX A - SUBSURFACE INVESTIGATION
APPENDIX B - ANALYTICAL RESULTS
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son. QUAIlTY EVAWATION
BAKERSFIElD STOCKDALE STATION POST OFFICE
BAKERSFIEID, CALIFORNIA
1.0 INTRODUcnON
In this report, we present the results of our soil
quality evaluation for the referenced site as shown
on Figures 1 and 2. As you know, previous work at
the site has included the replacement of an
underground gasoline storage tank and associated
piping and fuel dispensers. During removal,
petroleum hydrocarbons weré dete'cted in soil
underlying the tank. The purpose of the current
investigation was to obtain additional soil quality data
to evaluate the extent of impacted soil at the site.
During this investigation, we reviewed the
underground storage tank removal report prepared
for the site by ERM~West Inc., dated April 24, 1992.
The Bakersfield Stockdale Station Post Office is
located at 5601 Stockdale Highway in Bakersfield,
California. We understand that a 10,OOO-gallon
single-walled fiberglass underground gasoline storag'e
tank, installed in 1975, was removed from the site in
February 1992. Tank tightness tests and inventory
control practices performed prior to removal did
not indicate leaks; however, after removal, cracks
were observed along the end cap seams in the
fiberglass at each end of the tank. Total petroleum
hydrocarbons (TPH) as gasoline were detected in soil
samples collected below the vent and fill ends of
the tank at concentrations of 36,000 and 46,000
parts per million (ppm), respectively. These
samples were collected approximately 6 feet below
the bottom of the tank.
1.1 Purpose
1.2 Site Description!
Background
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This investigation was performed in accordance with
our proposal dated April 9, 1992 and subsequent
discussions with you. The scope of work performed
included the' following:
· Drilling and logging of six exploratory borings
to depths between 66.5 and 116.5 feet.
e Laboratory analysis of 82 soil samples collected
from selected depth intervals for TPH as gasoline
with additional scans to detect benzene, toluene,
ethylbenzene, and xylenes (BTEX).
· Preparation'. of this report.
2.0 SITE INVESTIGATION
Between July 21 and 23, 1992, six exploratory
borings (EB-l through EB-6) were drilled at locations
shown on Figure 3. As discussed below, soils
encountered during drilling consisted primarily of
find to medium grained sands with several thin
(typically 3 to 5 feet thick) layers of less permeable
clays and silts. A cross section (Figure 4) showing
subsurface conditions is attached.
The former tank area is capped by approximately 3
to 6 inches of asphaltic and concrete pavement.
Immediately underlying the concrete is an
approximately 14-foot thick layer of fine grained
sand and silty sand (Stratum A). Beneath this
stratum is a 2- to 3-foot thick layer of less
permeable sandy silt (Stratum B). This stratum
overlies an 18- to 23-foot thick layer of fine to
medium grained sand (Stratum C). A second less
permeable layer (Stratum D) consisting of 1 to 8
feet of silty clay and silty sand was encountered
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864-9, Page 2
'"
1.3 Scöpe of Work
2.1 Subsurface Exploration
LOWNEY ASSOCIATES
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beneath Stratum C. Underlying Stratum D is a 19-
to 25-£oot thick layer of fine to coarse sand and
gravel (Stratum E).
At a depth of approximately 65 feet below ground
surface, a third less permeable layer (Stratum F)
was encountered. This stratum consists of
approximately 3 feet of silty clay and clayey silt,
with varying amounts of fil1e sand. During drilling
of Boring EB-3, soil saturated with free product was
encountered in 'and just above this stratum. To
measure product depth, a bailer was lowered inside
the hollow stem augers. Approximately 1.5 feet of
free product was observed in the bailer upon
recovery from the hole.
To reduce the potential for downward migration of
this free product, Boring EB-3 was terminated in
Stratum F at a depth of approximately 66 feet. Soil
encountered in other borings below Stratum F
consisted of approximately 30 feet of fine to coarse
grained sand underlain by thin layers of sandy silt.
The maximum depÙ1 explored was 116.5 feet (Boring
EB-4). Ground water was not encountered in any of
the borings. Reportedly, depÙ1 to ground water in
the site vicinity is approximately 150 feet or greater.
Boring logs and details regarding our field
investigation are included in Appendix A.
Soil samples were collected from each boring at
selected depÙ1 intervals and initially monitored wiÙ1 a
portable organic vapor meter (OVM). Organic vapor
concentrations, as shown on the attached boring
logs, ranged from 0 to 3,400 ppm, with the highest
levels detected in Borings EB-3 and EB-4.
864-9. Page 3
2.2 Soil QUality
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864-9 Page 4
As presented in Table 1 below, 82 selected soil
samples were analyzed for TPH as gasoline and BTEX
compounds (EPA Test Method 8015/8020). The
highest petroleum hydrocarbon concentrations (up
to 4,300 ppm) were detected in soil samples
obtained from from Borings EB-3 and EB-4 between
depths of 15 and 65 feet. These borings were
located approximately 3 and 18 feet south of the
former tank location. Below the 65-foot depth, a
rapid decrease in petroleum hydroca~bon
concentrations was generally observed. Copies of
laboratory reports are attached in Appendix B.
TABLE 1. Laboratory Results July 1992
Bakersfield Post Office
Bakersfield. California
(concentrations in ppm)
LQcation Depth (ft) Gasoline Benzene . Toluene Ethvlbenzene Xylenes
EB-1 6.0-6.5 <1.0 <0.005 <0.005 <0.005 <0.005
11.0-11.5 <1.0 <0.005 <0.005 <0.005 <0.005
16.0-16.5 <1.0 <0.005 <0.005 <0.005 <0.005
21.0-21.5 <1.0 0.024 0.034 0.005 0.033
26.0-26.5 <1.0 0.010 0.019 <0.005 0.008
31.0-31.5 <1.0 0.11 0.025 <0.005 0.010
36.0-36.5 1.0 0.24 0.31 0.019 0.14
41.0-41.5 <1.0 0.12 0.16 0.012 0.081
46.0-46.5 <1.0 <0.005 0.006 <0.005 <0.005
51.0-51.5 <1.0 0.010 0.020 <0.005 <0.005
56.0-56.5 <1.0 0.044 0.069 <0.005 0.024
61.0-61.5 <1.0 0.017 0.020 <0.005 <0.005
66.0-66.5 <1.0 0.15 0.22 0.010 0.077
71.0-71.5 <1.0 0.11 0.19 0.008 0.056
76.0-76.5 <1.0 0.041 0.068 <0.005 0.020
EB-2 11.0-11.5 <1.0 <0.005 <0.005 <0.005 <0.005
16.0-16.5 <1.0 <0.005 <0.005 <0.005 <0.005
21.0-21.5 <1.0 <0.005 <0.005 <0.005 <0.005
. 26.0-26.5 <1.0 <0.005 <0.005 <0.005 <0.005
31.0-31.5 <1.0 <0.005 <0.005 <0.005 <0.005
36.0-36.5 <1.0 0.033 0.013 <0.005 0.020
41.0-41.5 <1.0 0.054 0.069 0.005 0.033
46.0-46.5 <1.0 <0.005 0.015 <0.005 0.008
51.0-51.5 <1.0 <0.005 0.009 <0.005 0.008
56.0-56.5 <1.0 <0.005 0.014 <0.005 0.007
61.0-61.5 <1.0 0.008 0.010 <0.005 <0.005
continued
LOWNEY ASSOCIATES
I 864-9, Page 5
I TABLE 1. Laboratory Results July 1992
Bakersfield Post Office
Bakersfield. California
I (continued) "
Location Depth (ft) Gasoline Benzene Toluene . Ethylbenzene Xylenes
I EB-2 (cont.) 66.0-66.5 <1.0 <0.005 0.013 <0.005 <0.005
71.0-71.5 <1.0 0.014 0.025 ' <0.005 0.005
76.0-76.5 <1.0 0.010 0.019 <0.005 <0.005
I 81.0-81. 5 1.0 0.140 0.360 0.023 0.190
86.0-86.5 <1.0 <0.005 <0.005 <0.005 <0.005
91.0-91. 5 <1.0 <0.005 <0.005 <0.005 <0.005
I EB-3 16.0-16.5 4,300 29 280 83 600
21.0-21.5 1,500 18 190 47 360
26.0-26.5 1,300 12 100 31 200
I 31.0-31. 5 1,400 9.6 110 30 210
36.0-36.5 310 2.0 17 6.8 48
41.0-41. 5 1,300 19 140 37 240
46.0-46.5 4,200 48 400 100 700
I 51.0-51.5 490 2.6 30 9.2 63
56.0-56.5 1,300 6.5 81 29 200
61.0-61. 5 3,400 36 340 84 590
66.0-66.5 2,200 23 210 58 380
I EB-4 16.0~16.5 <1.0 0.012 0.071 0.017 0.110
21.0-21.5 5.8 0.056 0.46 0.14 1.0
I 26.0-26.5 <1.0 0.016 0.027 <0.005 0.015
31.0-31.5 <1.0 0.052 0.092 0.010 0.063
36.0-36.5 2.1 0.044 0.240 0.073 0.460
41.0-41. 5 1.8 0.034 0.130 0.026 0.190
I 46.0-46.5 1.1 0.031 0.110 0.021 0.170
51.0-51.5 1,900 6.0 82 32 250
56.0-56.5 280 2.0 23 6.8 50
61.0-61.5 420 4.5 46 12 91
I 64.0-64.5 1,000 11 120 27 190
66.0-66.5 970 21 130 29 180
67.5-68.0 58 1.3 3.3 0.240 1.8
I 69.0-69.5 <1.0 0.051 0.110 0.010 0.640
76.0-76.5 1.5 0.250 0.410 0.021 0.150
81.0-81.5 <1.0 0.170 0.270 0.009 0.060
86.0-86.5 <1.0 0.028 0.033 <0.005 0:007
I 91.0-91. 5 <1.0 0.013 0.023 <0.005 0.007
96.0-96.5 <1.0 0.011 0.006 <0.005 <0.005
101.0-101.5 <1.0 0.005 0.012 <0.005 <0.005
106.0-106.5 <1.0 <0.005 <0.005 <0.005 <0.005
I 111.0-111.5 <1.0 <0.005 <0.005 <0.005 <0.005
116.0-116.5 <1.0 <0.005 <0.005 <0.005 <0.005
I EB-5 16.0-16.5 <1.0 <0.005 <0.005 <0.005 <0.005
26.0-26.5 <1.0 <0.005 <0.005 <0.005 <0.005
36.0-36.5 <1.0 <0.005 <0.005 <0.005 <0.005
41.0-41. 5 <1.0 <0.005 <0.005 <0.005 <0.005
I 46.0-46.5 <1.0 <0.005 <0.005 <0.005 <0.005
56.0-56.5 <1.0 <0.005 0.008 <0.005 0.014
64.0-64.5 <1.0 <0.005 0.020 <0.005 0.021
66.5-67.0 1.6 0.310 0.450 0.029 0.210
I continued
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864-9, Page 6
Location
EB-5 (cont.)
Depth (ft)
68.0-68.5
. 69.5-70.0
81.0-81. 5
86.0-86.5
TABLE 1. Laboratory Results July 1992
Bakersfield Post Office
Bakersfield. California
(continued)
Gasoline Benzene Toluene Ethylbenzene Xvlenes
1.9 0.410 0.700 0.036 0.230
<1.0 0.029 0.063 0.010 0.050
<1.0 <0.005 0.009 <0.005 <0.005
<1.0 <0.005 0.006 <0.005 0.006
<1.0 <0.005 <0.005 <0.005 <0.005
<1.0 0.071 0.170 0.Q09 0.059
1.1 0.270 0.380 0.013 0.100
<1.0 0.040 0.097 <0.005 0.040
EB-6
21.0-21.5
41.0-41.5
66.0-66.5
71.0-71.5
3.0 CONa.tJSIONS
The purpose of this investigation was to evaluate
current soil quality at the site and the need for
remediál actions.
The upper 65 feet of soil underlying the site consists
primarily of sands with three distinct layers of finer
grained silts and clays. These less permeable layers
occur at depths of approximately 15, 40, and 65 feet
below ground surface and are generally 3 to 5 feet
thkk. Approximately 15 to 25 feet of sand separates
each of these layers.
The laboratory analyses indicate that petroleum
,
hydrocarbons have migrated vertically through the
sandy soils underlying the former, tank. The highest
TPH as gasoline concentrations (up to 4,300 ppm)
were detected in Strata C, D, and E at depths
between 15 and 65 feet.
The greatest degree of lateral dispersion appears to
have occurred at the 65-foot depth where the vertical
migration was slowed by less permeable clays and
LOWNEY ASSOCIATES
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864-9, Page 7
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silts (Stratum F). Free product was observed during
drilling of Boring EB-3, located approximately 3 feet
south of the southernmost end of the former tank, at
this depth. This free product appears to be perched
on these clays and silts. Although free product was
not encountered in the other borings, an increase in
petroleum hydrocarbons concentrations was typically
detected near Stratum F at the 65 foot depth.
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In sandy soils below Stratum F, a maximum TPH as
gasoline concentration of o~y 1.5 ppm was detected.
TPH as gasoline was not detected below a depth of 80
feet. Low levels of BTEX compounds were detected
slightly deeper; however, these compounds were not
detected below a depth of approximately 100 feet.
Lateral dispersion appears have occurred primarily irt
a southerly direction. Relatively high gasoline
concentrations (up to 1,900 ppm) were detected in
soil from Boring EB-4 located approximately 18 feet
south of the former tank, while the maximum
concentrations detected in soil from Borings EB-l,
EB-2, and EB-6) located east, north) and west of the
tank, respectively, were at or near the laboratory
detection limit of 1.0 ppm. Since the slope of
subsurface deposits, such as the less permeable clay
and silt strata, is often similar to regional surface
topography (which slopes downward to the south), a
southern migration of petroleum hydrocarbons away
from the source is not surprising.
Ground water in the site vicinity is reportedly at a
depth of approximately 150 feet. Since petroleum
hydrocarbons were not detected in soil below the
100-foot depth, potential impact to ground water is
not a significant concern, in our opinion.
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864-9, Page 8
4.0 RECOMMENDATIONS
To reduce the potential for further migration of
petroleum hydrocarbons detected in soil, we
recommend that remedial measures be
implemented.
In our opinion, corrective actions utilizing soil vapor
extraction would be the most cost-effective
technology. To maximize the effíciency of the vapor
extraction system, the vapor extraction wells should
be constructed to vent specific strata.
(i
The wells should be designed to vent Strata C and E
as these zones contain the highest gasoline
concentrations and consist of sandy soil across which
a substantial air flow likely can be established. To
help expedite the cleanup, venting wells should be
soreened throughout only one stratum, thus, utilizing
the naturally occurring clay and silt layers as barriers
to direct air flow through the desired zones.
Our experience indicates that a vapor influence radius
of approximately 100 feet would likely be achievable
at the site. Therefore, vapor extraction from one to
three wells located in Strata C and E would likely be
sufficient for the impacted area.
After extraction well installation, we recommend that
a vapor influence study be performed to better
evaluate the actual capture radius. In addition, flow
rates from each zone and volatile hydrocarbon
concentrations in the extracted vapor should be
measured to aid in the selection and sizing of the
most appropriate vapor treatment technology.
Typical vapor treatment methods include carbon
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absorption, thermal destruction, and catalytic
oxidation.
Selection of the treatment method should be based
on initial and operational costs, effectiveness, service
life, and maintenance requirements.
After the system has been designed, we recommend
. that a bid package be submitted to several
contractors to obtain competitive costs for
installation of the treatment system.
Since free product was encountered in Boring EB-3,
this boring was terminated at a depth of
approximately 65 feet. In our opinion, after
remedial measures have eliminated the free product,
an additional boring should be advanced to evaluate
depth óf impacted soil near the location of EB-3.'
This additional boring would also aid in evaluating the
performa.nce of the remedial system.
5.0 IlMITATIONS
Soil deposits and rock forrnatións may vary in type,
strength, and many other important properties
across any geologic area. The study that we have
made assumes that the data obtained in the field and
laboratory are reasonably representative of field
conditions and that the subsurface conditions are
reasonably susceptible to interpolation and
extrapolation between sampling locations.
The accuracy and reliability of geo- or hydrochemical
studies are a reflection of the number and type of
samples taken and the extent of the analysis
conducted, and is thus inherently limited and
dependent upon the resources expended. Our
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864-9, Page 9 .
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sampling and analytical plan was designed using
accepted environmental engineering principles and
our judgement for the performance of a
reconnaissance soil quality investigation, and was
based on the degree of investigation desired by ýou.
It is possible to obtain a greater degree of certainty,
if desired, by implementing a more rigorous soil
sampling program or by installation of monitoring
wells to establish a baseline of ground water quality.
This report was prepared for the use of the United
States Postal Service in evaluating soil quality at the
referenced site at the time of this study. We make
no warranty, expressed or implied, except that our
services have been performed in accordance with
environmental engineering principles generally
accepted at this time and location. The chemical and
other data presented in this report can change over
time and are applicable only to the time this study
was performed.
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864-9, Page 10
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VICTh"ITY MAP
BAKERSFIELD POST OFFICE
I LOVlNEYASSOCIA TE~akerSfield, California
I Eovi mnmenlol! Geole, h n ;col!E ng ¡ need ng Sen,;",
FIGCRE 1
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864·9;&'29 RLW JC
Base by TI-IE ERM GROUP, dated April 6, 1992.
SITE PLAN
BAKERSFIELD POST OFFICE
I ' Bakersfield, California
, LOVlNE\'-ASSOCIATES
I Environmental/Geotechnical/Engineering Services
.......
......
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FlGL'RE 2
864-9, .'\ugust 1992
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8&4,8.6129 RLH' JC
Base by LOW!\'EY ASSOQA TES field sketch, July 1992.
BB-I
S
FORMER Th"DERGROUND TANK DETAll.
BAKERSFIELD POST OFFICE
Bakersfie1d, Ca1ifornia
LOVlNE\'"ASSOCIA TES
Envi ronmentol/Geotechn icol/Eng ¡neeri ng Services
o
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A-I
APPENDIX A
SUBSURFACE INVESTIGATION
The subsurface investigation was performed between
July 21 and 23, 1992 using a ~obile B-53 drill rig
equipped with 8-inch hollow-stem augers. A total of
six exploratory borings were drilled at the site. The
borings were advanced to depths of between 66.5
and 116.5 feet. Soil samples were collected at
selected depth intervals to the bottom of' each
boring. The soils encountered in the borings were
logged using the Unified· Soil Classification System
(ASTM D-2487). The logs of the borings, as well as a
key to the classificàtion of the soil (Figure A-I), are
included as part of this appendix. Upon
completion, the borings were backfilled with
concrete to ,match existing grade.
Prior to use all sampling equipment was thoroughly
cleaned with a tri-sodium phosphate and distilled
water solution or steam cleaned. Soil samples were
collected in 2-inch diameter brass liners using a split
spoon drive sampler. Upon collection from the
sampler, the ends of the brass liner were covered
with aluminum foil and then sealed with a plastic cap
at each end. The caps were taped airtight and
labeled appropriately. The samples were then
immediately placed in an ice cooled chest for
transport to a certified analytical laboratory.
The standard penetration resistance blow counts
were obtained by dropping a 140-pound hammer
through a 30-inch free fall. The blows per foot
recorded on the boring logs represent the
accumulated number of blows required to drive the
sampler the last 12 inches of the interval indicated.
LOWNEY ASSOCIATES
I
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A-2
The attached boring logs and related information
depict subsurface conditions only at the locations
indicated and at the particular date designated on the
logs. Subsurface conditions at other locations may
differ from conditions occurring at these boring
locations. The passage of time may result in a
change in the subsurface conditions due to
environmental changes. In addition, any stratification
lines on the logs represent the approximate
boundary between soil types; the transition may be
gradual.
LOWNEY ASSOCIATES
I
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Õ
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PRIMARY DIVISIONS
CLEAN
GRAVELS
cuss TIiAJ'/
~
SOIL
TYPE
GW
GP
GM
GC
SW
...............
:;~.~.~\??.:: Well graded sands, gravelly sands, IittJe or no fines.
Poorly graded sands or gravelly sands, little or no fines.
Silty sands, sand-silt mixtures, non-plastic fines.
LEGEND
SEC01\'"DARY DIVISIONS
GRAVELS
Well gradèd gravels, gravel-sand mixtures, little or no fines.
Poorly graded gravels or gravel-sand mixtures, little or no fines.
Silty gravels, gravel-sand-süt mixtures, non-plastic fines.
Clayey gravels, gravel-sand-clay mixtures, plastic fines.
MORE 1HAN HALF
OF COJ.1SE I'RACOON
IS LARGER TIiAJ'/
NO. 4 SIEVE
GRAVEL
WITIi
FINES
CLEAN
SANDS
CUSS TIiAJ'/
~
SANDS
MORE 1HAN HALF
Of COARSE I'RACOON
IS SMAllER 1HAN
NO. 4 SIEVE
SILTS AND CLAYS
, IJQUID LIMrT IS LESS TIiAJ'/ ~
sc
ML
CL
OL
MH
CH
OH
Pt
Inorganic clays of high plasticity, fat clays.
Organic clays of medium to high plasticity, organic silts.
Peat and other highly organic soils.
SILTS AJ'1D CLAYS
IJQUID LIMrT IS GREATER THAN SOH>
HIGHLY ORGAJ\"1C SOILS
DEFINITION OF TERMS
U.S. STA.~DARD SERIES SIEVE
200 40
10
4
CLEAR SQUARE SIEVE OPENINGS
3/4" 3" 12"
I
SAJ\1) GRAVEL
SILTS AND CLAY I I , COARSE COBBLES BOULDERS
FINE MEDIUM COARSE FII\1£
KEY TO EXPWRATORY BORING WGS
Unified Soil Classification System (ASTM D - 2487)
BAKERSFIELD POST OFFICE
Bakersfie]d, California
LO\VNE\~ASSOCIA TES
E nvironmental/Geotechn ¡cal/Eng ineering Services
I
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GRAIN SIZES
1-::: TERZAGHI
·:f SPUT SPOON
.;:::: STANDARD PENETRATION
U. MODIFIED CALIFORNIA
T
SAMPLERS
lil',l. SHELBY ruBE
fr PITCHER ruBE
. ~:::
SA1\"D A1\"D GRAVEL BWWS/FOOT"
VERY LOOSE 0-4
LOOSE 4 - 10
MEDIUM DENSE 10 - 30 .
DENSE 30 - 50
VERY DE~SE OVER 50
SILTS A1\"D ClAYS STRENGTH :!: BLOWS/FOOT"
VERY SOIT o - 1/4 0-2
SOIT 1/4 - 1/2 2 - 4
FIRM 1/2 - 1 4 - 8
STIFF 1 - 2 8 - 16
VERY STIFF 2·4 16 - 32
HARD OVER 4 OVER 32
RELA.TIVE DENSI1Y
CONSISTENCY
. Number of blows of 140 pound hammer falling 30 inches to drive a 2 inch a.D. (1-3/8 inch I.D,) split spoon (A5TM D-1586),
::: Unconfllled compressive strength in tons/sq. f¡, as determined by laboratory testing or approximated by the standard penetration
lesl (ASTM D-l586), pocket penetrometer, lorvane, or visual observation,
fiGURE A-I
86i¡'9, ,\ugust 1992
I DRILL RIG: Moblie B-53 SURFACE ELEV AnON: - LOGGED BY: SF
IDEPTH TO GROUJ\'DWATER: Not BORING DIAMETER: 8 inches DATE DRILLED: 7/21/92
encountered
t '" ~eJ"'" ~~1
... Q z ~ ~ß ~ ~~i ~J rà
~ z ~ !1
I DESCRIPTION AND REMARKS '" ..
~ C) ¡¡:; è u:lg: ~ e!ãg
'" õ~
01) ... z ~ 0,-, ~ee l- I!:
0 >
u
I 3 inches asphalt over 6 inches of concrete
Brown silty sand, fme grained, poorly graded, slightly moist A :::~: :~ :: Medium SM
.. .... Dense
.. ....
I .. .....
.. ....
.. · .
.. · .
· .
.. · .
.. .... s
I ¡W 1\11) 15.8
I ....-..
Gray to white sand, fine grained, poorly graded, slightly moist A ........ Medium SP
.--..".
".."..". Dense
.......
........
.......
........
.......
I ..."...
....... 10
........
.......
".....". 14.2
....... 14 ND
........
.......
........
.......
I ........
........
".."..".
.......
........
.......
........
.......
.........
.......
........
.......
I . .'
Gray sandy silt/silty sand, very fine grained sands, slightly moist B 1S
slight petroleum order ND 34.8
I ........
Gray to white sand, fine to medium grained, poorly graded, C ....... Medium SP
..."..".
....... Dense
I slightly moist, slight petroleum order ........
.......
........
.......
........
.......
........
.......
...".....
....... ND 48
........
I .......
........
.......
..."....
.......
..."..".
.......
........
.......
........
.......
I ........
....... Dense
...... "
.......
........
.......
........
....... 25
.......,. ,~
.......
I ........
....... 36 ND 179
.,....... ,It:
.......
........ .,¡;;;;:::
........
........
........
........
.......
I .::..::::
,',.,..,'
.......
NOTE: The stratification lines represent ........
.......
........
the approximate boundary between the ....... ND = Not Detected
........
soil types. The transition may be gradual. ::: ~'::. -- = Not Analyzed
I ....... 30
........ ""'"
864,9,&'10 SF·EB EXPLORATORY BORING LOG - EB-l
BAKERSFIELD POST OFFICE
I Bakersfield, California
LOVlNE\~ASSOCIA TES
BORING - EB-l
I Environ mentel/Geotech n ieel/Eng i neeri ng Services 864·9, August 1992
I DRILL RJG: Mobile B-53 SURFACE ELEVATION: - LOGGED BY: SF
Not DATE DRILLED: 7/21/92
I DEPTIi TO GROU1\'DWATER: encountered BORING DIAMETER: 8 inches
t; .., ~ö'" ü! ~Ë
... Q Z ~ ~ª g :2",
i! z G ¡:z~ ~j .~ :E '?
« ~j
DESCRIPTION AND REMARKS ... .. EI;;SI
I ~ 2 ... lJoJæ ~ s~j
If) šJ ~i?j9
... z 0,-, l- t:
0 ....e
u >
Gray to white sand, frne to medium grained, poorly graded, ".~... Dense SP
C .,....
........ 43 ND 305
.,....
I slightly moist, moderate petroleum odor ........
........
........
....,.
'.,1..".
........
........
.,....
........
I ........
........
........
........
.......
........
.......
........
........
........ 3S 728
.......
I ........
Brown silty clay, low plastictiy, slightly moist, slight petroleum D Hard CL 53 1.0 42
odor
I 0. :.. .
Brown silty sand, fine grained, poorly graded, moist, slight D Very SM
I petroleum odor Dense 40
1\'D 178
I
.. .'
I Light brown sand, fine to medium grained, poorly graded, E ......... Dense SP
.........
........
slightly moist, trace fine gravel, slight petroleum odor ........ 45
........
.......
........ ND 40
.......
........
........
I ........
........
........
.......
........
.........
........
.......
........
...."'..
........ Very
I .......
."...... Dense
........
........
........
........ 50
.......
........
....... ND 37
........
I ;:: :::;.
........
........
.........
........
..,....
........
.......
........
NOTE: The stratification lines represent .......
I ......~
.......
the approximate boundary between the ........
:':-:':-:'1
soil types. The transition may be gradual. ........
".."..".
........ 55
........
........
I ........
........ 80 ND 205
........
.......
ç ........
.......
.......,,-
.......
........
........
........
I .......
........
.......
........
.......
........
....... ND = Not Detected
........
.......
Minor coarse sands and fine to coarse gravel at 60 feet ........ -- = Not Analyzed
....... 60
I ........
8ô4-9,EY10 SF'EB EXPLORATORY BORING LOG - EB-l
BAKERSFIELD POST OFFJCE
I Bàkersfield, California
LOVlNE\~ASSOCIATES .
I Environmental/Geotechnical/Engineering Services
BORlNG - EB-l
864-9, August 1992
I DRILL RIG: Mobile B-53
Not
I DEPTIl TO GROU1\TIWATER: encountered
SURFACE ELEVATION: -
BORING DIAMETER: 8 inches
I
I
DESCRIPTION AND REMARKS
Ught brown sand, (continued)
I Brown sandy silt, low plasticity, very fIne sands, slightly moist,
slight petroleum odor
I
I Ught brown sand, fine to medium grained, poorly graded,
slightly moist, slight petroleum odor
I
I
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ßonom of Boring - 76.5 feet
I
I
I
I
I
NOTE: The stratification Jines represent
the approximate boundary between the
soil rypes. The transition may be gradual.
I 864-9, SIlO SF'EB
LOGGED BY: SF
DATE DRILLED: 7/21/92
t; '" ~t:J"" ¡¡ ~ml
z: ~ ~ß g r¿~i ~J
~ .. !J ~:E
¡;; ... t:IJ§: ~ E!;ig 0·
z: § 0'-' æ~s l- f: sg
0
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Very SP 55+ ND 209
Dense
... Q
g z:
'"
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E ......,
.,.,.
........
.,....
I-..~...
.........
f!Þ......
.......
"......
.......
...,...
.......
"......
.......
........
p
Very ML
sûff
....,.
G !:.!:.! Dense
"......
.......
.-......
........
........
.......
-:::~:.-:
.........
.......
"......
.......
........
.......
.........
........
........
.......
........
.......
........
. .......
........
.......
.1."."
....,.
........
.......
J'."."
.......
........
.......
!:Þ..-:
........
.......
........
........
........
EXPWRATORY BORING WG· EB-l
BAKERSFIELD POST OFFICE
I Bakersfield, California
LO\VNE\"ASSOCIA TES
I Environmental/Geotechnical/Engineering Services
6S
SP
70
IrlP
J:( 45
:-:.:
7S
1:\ 45
80
85
90
1\TI
14.2
ND
111
!\TI
48.7
ND '" Nor Detected
.- = Not AnaJyzed
DORING· ED-l
864-9, August 1992
I DRILL RlG: Mobile B-53 SURFACE ELEVATION: - LOGGED BY: 'SF
I DEPTH TO GROT.J1\1)WATER: Not BORING DIAMETER: 8 inches DATE DRlU.ED: 7/21/92
encountered
b þ. ~r:¡~ Ii! ~~J
... Q .z ~ ~ß g ~~i ~j
2 z ~ !j
DESCRIPTION AND REMARKS '" ..
I ~ c ¡;; ... tL1æ ~
'" Š æi1J9 S~
... z 0'-' ... ¡:
0 ....eo
u >
3 inches asphalt over 6 inches of concrete
I Brown silty sand, fine grained, poorly graded, slightly moist A :.0: .: : Loose SM
:. "0· .: .-
I
S
I 6 ND 0.0
I "......
Light brown sand, fine grained, poorly graded, slightly moist A ........ Dense SP
........
.........
........
I ........ 10
...".... Iii
.......
........
....,. 30 1\1) 0.0
........
.,.,.
........
.......
........
.......
I ..."....
.......
........
.......
........
.,.,.
- ........
.......
........
I Brown sandy silt/silty sand, very fìnegrained sands, slightly B Dense MI..
moist : SM IS i"
....... 49 ND 0.0
Light brown sand, fine grained, poorly graded, slightly moist C ~...... Medium SP lli'[
.......
........
I ........ Dense
........
.......
........
.......
........
.......
........
.......
........
I ..,....
........
.......
........
....,.
........ 20 f::,;:
.......
........ m~'
.,.,. 21 ND 0.0
........
....... tV'
I ........
.......
rI'''''''
.......
........
.......
........
....,.
........
.......
I ........ Dense
.......
........
.......
........
.....,.
Interbedded layers of brown sandy silt at 25 ft, moderate ..........
....... 25
........ .:.:.:
petroleum odor ....... .;rt
........
I ........ .......... 40 ND 849
........
.......
........ »::;:
..........
........
.......
........
........
.........
I .......
........
.......
NOTE: The stratification lines represent ........
;:::::;. Very
the approximate boundary between the ....... ND = Not Detected
........ Dense
.......
soil types. The transition may be gradual. ........ -- = Not Analyzed
....... 30
I ........ ¥..:-:-
864-9,8110 SF'EB EXPWRATORY BORING WG - EB-2
BAKERSFIELD POST OFFJCE
I Bakersfie1d, CaJifomja
LOVlNE\'-ASSOCIA TES
BORlNG - EB-2
I E nvironmenlol/ Geolech n icol/E n9 i n eeri n9 Services 864-9, August 1992
. -. - . .~_. ~.
I DRI~ RIG: Mobile B-53 SURFACE ELEVATION: LOGGED BY: SF
Not
I DEPTH TO GROUNDWATER: encountered BORING DIAMETER; 8 inches DATE DRIliED: 7/22/92
~ ~tj"" ~ml
,.. ..., EE ¡¡
Q Z ~ ! ~zi ~'"'
g z "" !1
I DESCRIPTION AND REMARKS ... Ii; ... ~1 ~:E
.~ 2 ¡¡; ... u;¡re ~ E~9 c'"
~ : "'2
II) ... z 0,-, ffiee : 0<
0
u ... >
Light brown sand, (continued) ~.~.~ SP
C .,.... Very
,...... 60
I ....... ND 227
,.,., Dense
....,.
~.~...
.,....
........
.......
~.~...
.......
,....,
I .......
...,.,
....,.
...~...
.......
,......
.,.....
"."'.r/'
.,....
........ 35 290
........
I ........
....... 40 :!\T!) 147
........
.,....
........
Brown silty clay, medium plasticity, moist, slight petroleum D Stiff CL
I odor
. . .
Light brown sand, fine to medium grained, poorly graded, E ........ Dense SP
.......
"'......
slightly moist, interbedded layers of sandy silt, slight petroleum .......
........
.....,.
I odor ........
........ 40
........ m:::
.,.,.
........ 45 ND 109
....... I·,·
........ :-:.:-:
.,.... ~t
........
.......
........
I .........
........
........
........
.,....
........
.........
........ Very
.......
........ Dense
I .........
........
.,....
........ 45
....,. I::
........ Q
....,.
........ ...... 61 ND 106
.........
........
.......
I ........
........
........
.......
........
.......
.....:..
........
Light brown sand, fine to medium grained, poorly graded, E ....... Very SP
I ........
.......
slightly moist, slight petroleum odor ........ Dense
.......
........
.......
........ 50
.......
........
....... 85 ND 77
........
I ........
........
.........
The stratification lines represent ........
NOTE: .......
........
the approximate boundary between the ........
........
.......
soil types. The transition may be gradual. ........
I .......
........
.........
........
........
........
.......
..."...
Finer grained at 55 feet ......... 55
........
.......
I ........
....... 75 ND 117
........
.......
........
.......
........
........
........
........
........
I ........
........
.......
........
.......
........
....... ND - Not Detected
......".
.......
Minor coarse sands and fine to coarse gravel at 60 feet ........ -- - Not Analyzed
I ....... 60
........
864-9.8110 SF'EB EXPLORATORY BORING LOG - EB-2
BAKERSFIELD POST OFFICE
I Bakersfield, California
LOVfNE\~ASSOCIA TES
I Environmental/Geotechnical/Engineering Services
BORING· EB-2
864-9, August] 992
· ----.-.. -"---'--"
I DRILL RIG: Mobile B-53 SURFACE ELEVATION: LOGGED BY: SF
I DEPTIi TO GROUNDWATER: Not BORING DIAMETER: 8 inches DATE DRILLED: 7/22/92
encountered
t; ~ö'" ug
.., ~~ '~ ¡¡
~ Q z Þ ~......
g z ~ I=zli: !j ~:EJ
DESCRIPTION AND REMARKS .., E~~ ~j
I ~ £ ¡;; -' t:J!i:! C·
~ Z ~ 0,-, j5i3S ... ~ sg
0 ....e
u >
E ,.,., Very SP
Ught brown sand, (continued) .........
,.,... 90 ND 77.2
I ....... Dense
... .....
........
......~
.........
,......
.........
......~
........
........
I .........
........
.........
........
........
........
........
........
........ 6S
........
.........
I ........
........ 77 ND 84.3
......~
........
........
.......
,......
.........
........
.........
I ........
.......
........
........
Ught brown sand, fine to medium grained, poorly graded, ........
G .......
........
slightly moist, slight petroleum odor .......
........
.......
........
I ....... 70
........
.......
"..".... 85 92.7
....... ND
~......
.......
........
.......
........
I .......
........
.......
........
.......
........
.......
........
.......
........
.......
I ........
NOTE: The stratification lines represent .......
........
the approxim~te boundary between the ....... 75
........ I"
.,.,. ....
soil types. The transition may be gradual. ........ 75 ND 108
.......
........
.......
I ........
.......
........
.......
........
.......
........
.......
........
....... Dense
........
I .......
........
.......
........
Finer grained sands with minor silts at 80 feet, moist .......
........ 80
.......
........
....... 1.0 113
........
I .......
........
.......
........
.......
........
.......
........
.......
........
.......
I ........
Ught brown sand, fine to medium grained, poorly graded, .......
........
.......
slightly moist, no petroleum odor ........
.......
........
....... 85
........
.......
I ........ :\D
....... 7.9
........
.......
........
.......
........
.......
........
.......
.........
I .......
No petroleum odor ........
Q .......
........
.......
........
.......
........ ND = Not Detected
........
........ -. = Not Analyzed
I ....... 90
........ ~:: .
864·9, S'10 SF'EB EXPWRATORY BORING WG - EB-2
BAKERSFIELD POST OFFICE
I Bakersfie1d, CaJifornia
LOVlNE\'-ASSOCIA TES
I Environmental/Geotechnical/Engineering Services
BORING - EB·2
864,9, August 1992
I DRILL RIG: Mobile B-53
Not
I DEPTIi TO GROUNDWATER: encountered
SURFACE ELEVATION: -
BORING DlAME'TE.R: 8 inches
. LOGGED BY: SF
DATE DRlU.ED: 7/22-7/23192
I
I
ö ... ze¡.... ¡¡ ~ëJ
... Q Z ~ Eg ~ ~~~ ~J
DESCRImON AND REMARKS i ~ ~ !J ~:[
~ ~ = !OJ§: ~ e~g 0'"
~ "'2
II) ~ 0,-, ~~e f; r.: o~
8
........ Dense SP 11
Light brown sand (continued) .......
........ 52 1'.'1) 1.8
....... -
~:~:~
-
Bottom of Boring - 91.5 feet -
-
-
9,5-
-
-
-
I 1007-
-
-
-
. -
. 105- '
-
-
-
-
110- -
-
-
-
-,
-
115-
-
-
-
NOTE: The stratification lines represent -
the approximate boundary between the ND c Not Detected
soil types. The transition may be gradual. 120- -- c Not AnaJyzed
I
·1
I
I
I
I
I
I
I
I
I
I
I 864-9, &'10 SF'EB
EXPWRATORY BORING WG - EB-2
BAKERSFIELD POST OFFICE
I . . BakersfieJd, California
LOVlNE\'-ASSOCIA TES
I Environmental/Geotechnical/Engineering Services
BORING - EB,2
864-9, August 1992
IDRILL RIG: Mobile B-53 SURFACE ELEVATION: - LOGGED BY: SF
I DEPTH TO GROUNDWATER: Not BORING DIAMETER: 8 inches DATE DRILLED: 7/22/92
encountered
t; þ ~¡j~ Ii! ymJ
~ 0 :z. ~ ~~ ~ ~J
g :z. ~ ~%i ~J ~::E
«
DESCRIPTION AND REMARKS ... .. GES
I ~ ~ c:! ~æ ~ 0'"
¡;:; ~ S~
If.> :z. ~ 0'-" ~~e ~
0
u >
3 inches asphalt over 6 inches concrete
1 Pea' gravel
I
5
I
I
I 10
I p
Brown sandy silt, 'fine grained sands, low plasticity, slightly Very ML
I moist, stron~ petroleum odor Stiff 540
15
30 4300 2800
Gray to white sand, fine to medium trained, poorly graded, C ........ Dense SP
........
I ........
........
slightly moist, strong petroleum odor ........
,.~...
.......
........
........
........
.......
........
I .....".
....,..,
........
..."....
........
........ 20
........ I"·'
........
....... :¡i¡¡j 32 1500 3200
........
.......
I ........
......... ~~:::
........
........
........
.......
........
.......
........
.......
I ........
........
........
.......
"..".".
.......
Fine grained at 25 feet -"......
....... 25
........ ·f~m
.......
I""'"
1 ....... ~:::::: 39 1300 2ìOO
"..,f''''
.......
........ 0);:;:;:
.......
........
.......
........
.......
........
I .......
....-...
.......
NOTE: The stratification lines represent ...,t...
.......
........
the approximate boundary between the ....... ND K Not Detected
~..-..'
.........
soil types. The transition may be gradual. ........ -- ~ Not Analyzed
....... 30
I ...."... ,......
864-9.8111 SF'EB EXPLORATORY BORING LOG - EB-3
BAKERSFIELD POST OFFICE
I Bakersfield, California
LO\VNE\~ASSOCIA TES
I' Environmental/Geotechnical/Engineering Services
BORING - £13,3
864-9, August 1992
_ __. u.._.
I DRILL RIG: Mobile B-53 SURFACE ELEVATION: - LOGGED BY: SF
Not DATE DRILLED: 7/22/92
I DEPTH TO GROUNDWATER: encountered BORING DIAMETER: 8 inches
(:j ... ~~i ¡¡ !.!~
~ Q z ~ ~~ g ~J
g .., ¡:z ~J
ffi Çj « ~:EJ
DESCRIPTION AND REMARKS .. 5!ijg q
I ~ C) ... tug: ~ ca:
~ II) ši ~ S~
z 0...... ffi~e I-
0
U .. >
,.~... Dense SP
Gray to white sand (continued) C .......
~.~.~ 50 1400 2700
.......
I ...~.".
.....~.
...,...
........
"..,....
........
,.,....
........
"......
.........
I ,...."
........
...~."
.......
tI.~·tI
........
...~...
........
...--.... 3S
........
"."."
I ........ 37 '310 2700
tI·..·..
.......
........
.........
........
........
~.~.~
.........
........
I .........
........
........
........
........
........
.......
.........
I Brown silty sand with interbedded layer of silty clay, medium D Medium S. 40 570
plasticity, moist to wet, strong petroleum odor Dense CL 30 1300 to
1700
I
I 4S
4200 2750
.......
Light brown sand, fine grained, poorly graded, slightly moist, E ...--..- Very SP
I .......
........
strong petroleum odor ......... Dense
."~'"
.......
........
.......
~......
........
"......
I .......
........
........
........
.......
........ SO
........
........
....... 490 2950
........
.......
I ~.~.~
.......
NOTE: The stratification lines represent ......~
........
........
the approximate boundary between the .......
...~.~
soil types. The transition may be gradual. .......
........
.,....
I ........
.,....
........
.......
........
.... .
Brown sand with gravel, fine to medium grained sand, fine to E Very SW 55 ffi,:¡
I coarse gravel, subangular to rounded, slightly moist, strong Dense 55+ 1300 3200
~:",,:
petroleum odor ~t,
I ND a Not Detected
Decreased gravel contact at 60 feet 60 -- a Not Analyzed
I ¡::~:::
864-9,8110 SF'EB EXPWRATORY BORING WG - EB-3
I
BAKERSFIELD POST OFFICE
BakersfieJd, CaJiforilla
LOVlNE\'-ASSOCIATES.
E nvironmental/Geotech n ical/Eng i neering Services
BORING - EB,3
864-9, August 1992
I
I· .
DRIll. RIG: Mobile B~53
LoGGED BY: SF
DATE DRILLED: 7/22/92
~ ~ ~~ ZB'"' 11 ~!1
z g ~~~ ~1
~ "-
II> = DJg: ~ E!iig
z ~ Q,-, ~!e ¡: ~ ~~
8 >
Very SW 80 3400
Dense
Not
I DEPTH TO GROUNDWATER: encountered
SURFACE ELEVATION: -
BORING DIAMETER: 8 inches
"I
Brown silty clay with fme sand lenses, moderately plastic clays, F
saturated with free product, strong petroleum odor, half bailer
full of gaSoline obtained from inside augers
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
DESCRIPTION AND REMARKS
Brown sand with gravel, (continued)
Bonom of Boring at 66.5 feet
NOTE: The stratification lines represent
the approximate boundary between the
soil types. The transition may be gradual.
864-9,1Y10 SF'EB
~
g
~
Q
Z
...
~
Hard
EXPLORATORY BORING LOG - EB-3
BAKERSFIELD POST OFFICE
Bakersfield, California
LOVlNE\"ASSOCIATES
Envi ron mentol/Geotec41 n icallE ng i n eering Services
CL
65
Ii 35 2200 3400
70
75
80
85
90
ND - Not Detected
-- - Not AnaJyzed
BORING - EB-3
864-9. August 1992
.. .~
I DRIll. RIG: Mobile B-53
Not
I DEPTII TO GROUNDWATER: encountered
SURFACE ELEVATION: -
BORING DIAMETER: 8 inches
LOGGED BY: SF
.,,º-ATE DRILLED: 7/22-7/23/92
I
t; '" ~ ~er"> Y~J
... Q z ~ ~S ,g ~~I ~J Ii!
g ..... ~J
z t;; ~:E
DEScmmON AND REMARKS ..... ... '?
~ 1.:1 ¡;:; ... ~æ ~ 0-
~ § ~ :: sg
z 0....... ~!e !:
0
u >
3 inches asphalt over 6 inches concrete -
Brown fine grained sa.nd observed in soil cuttings A .,-;:." SP
........
.......
......, -
.......
".".,
....,.
,."., -
.......
........
.......
...,...
....... -
,......
........
,.,.,
.......
......... 5-
.........
.........
........
"...... -
........
........
.......
........
........
........
.......
........
........
........
........
.. ......J'
.......
........
.......
I ........
.......
........
....... , 10-
........
.......
........
.......
........ -
.......
........
.......
........
....... -
.........
.......
........
....... -
........
.......
- ........
.......
- ........ -
.......
........
.......
"::":" 15-
.,~:..-; II':
Gray to white sand, fine to medium grained, poorly graded, C ........ Medium SP 19 ND 130
....... :jj¡ -
slightly moist, slight petroleum odor ........ dense -
.......
........
.......
........ -
.......
........
.......
........
........ -
........
.......
........
....... -
........
.......
........
.......
Moderate petroleum odor at 20.0 feet ........ 20 I'::
.......
........
....... 18 5.8 505
........ -
.......
........ .
.......
........
.......
........ -
.......
........
.......
........ -
.......
........
.......
........
....... -
........
.......
Finer grained at 25 feet, slight petroleum odor ........
....... 25-
........ Ir
.......
........
....... 25 J'\D - 121
........ ......
....... - I:::,:,
........ 'ir
.......
........
....... -
...~...
.......
........
.......
........ -
.......
NOTE: The stratification lines represent ........
.......
........
the approximate boundary between the ....... - ND ~ Not Detected
........
.......
soil types. The transition may be gradual. ........ -- = Not Analyzed
....... 30- -~::::.
........
I
I
I
I
I
I
I
I
I
I
I
I
I
I 864-9,8113 SF'EB
EXPLORATORY BORING LOG - EB-4
BAKERSFIELD POST OFFICE
Bakersfield, California
LO\VNE\'-ASSOCIA TES
Environ mental! Geotech n ical!Eng i neering Services
BOR1NG . EB·4
864-9, August] 992
I
I
".__ ________m.'___.___
I DRIll. RIG: Mobile B-S3 SURFACE ELEVATION: LOGGED BY: SF
Not BORING DIAMETER: 8 inches DATE DRILLED: 7/22-7/23/92
I DEPTIf TO GROUNDWATER: encountered
~ ~ö'"' !:!~
... ¡¡1
..a 0 Z ~ ~S g ~~~ ~1
i '" !J
z !Q ~xJ
I DESCRIPTION AND REMARKS '" ~ E!!i~
~ ~ ..a DJæ 0"
II> ~ S~
'" z c'-' ~~e l- f;:
0
u ... >
...~.". Medium SP
Gray to white sand (continued) C .......
".1'.,- 1\'11) 430
I ....... dense 28
...~...
.......
1'......
.......
........
........
....,...
.........
........
I .........
.,.~...
.......
........
.......
........
.........
........
.......
...~... 3S
.......
I ........
........ 26 2.1 365
........
.........
!....-:
Brown silty clay, moderate plasticity, slightly moist to moist, D Very CL
I slight petroleum odor stiff
......
I Light brown sand, fine grained, slightly moist, srrong perroleum E ....... SP 40
".·rI·"
....... Dense
odor ........ 1.8 2850
.,....
........
.......
........
.......
........
I .......
........
.......
........
........
........
.,....
........
....,.
........
.......
I ........
.......
........ 4S
Fine to mec!ïum grained at 45.0 and 50.0 feet .,.,.
........
........
........ 1.1 1200
.........
........
.......
I .........
.,....
........
.......
,.......
.......
........
'.....'
........
.",.
........
I .......
........
.,.,.
........
....,.
........ SO
........
........
.,.,. 34 1900 1800
........
I .,....
........
.,....
NOTE: The stratification lines represent ........
.,....
........
the approximate boundary between the .......
........
soil types. The transition may be gradual. .......
........
.......
I ........
.......
........
.......
........
.......
Brown sand with gravel, fine to medium grained sand, fine to E I Very sw SS l
I coarse gravel, subangular to rounded, slightly moist, strong Dense 50+ 280 2175
~;¡::¡¡
petroleum odor m¡~¡
I I
ND " Not Detected
I Decreased gravel content at 60 feet 60 -- " Not Analyzed
!r:,:,'
864-9,8113 SF'EB EXPLORATORY BORING LOG - EB-4
I
BAKERSFIELD POST OFFICE
Bakersfield, California
LOVlNE\"ASSOCIATES
Environ mental! Geotechn ical/Eng i n eering Services
BORING· EB-4
864-9. August 1992
I
"~' ~._+~ ..u _. .
I DRILL RIG: Mobile B-S3 SURFACE ELEVATION: - LOGGED BY: SF
DEPTII TO GROUNDWATER: Not BORING DIAMETER: 8 inches DATE DRILLED: 7/22/92
I encountered
t ... ~~ ~f:j'" ¡¡ ~!1
.. Q Z ~ ~ ~~i ::1....
g z '" !1
DESCRIPTION AND REMARKS ... ~ ... ~1
~ t:I = t>Jæ ~ E!;9
I ~ '" 3g
z ~ 0,-, ~~e ¡.. ~
8 ... >
Brown sand with gravel (continued) E Very sw II!~ 90 420 2250
dense - ~ -
I
-
L: 80 -- - 2400
- ¡ :.
I':
I - I.:¡ 70 1000 - 2250
~ 65- l
I, Brown silty clay with fine sand lenses, moderately plastic clays, P Very CL I::: 22 970 3100
~ --
very strong petroleum odor stiff -
. ::
Gradual change to sandy silt/silty sand, very fine grained sands, · . II:
. . · . Medium SM - I :::¡ 27 58 2600
very strong petroleum odor : : ~·l·, -
dense
I ....... - ¡~:;
Light brown sand, fine to medium grained, poorly graded, G 0/'0..... Dense SP
........ 45 ND - 140
...~... t'
slight moist, moderate petroleum odor ........ - : ,:::
........ ~i~I
........
........
, ....... 70-
I ........
....... ,
........
.......
".,1." -
.........
'\ ,I......
........
........
........ -
........
I .........
........
........ -
........
........
........
.......
. ........ -
........
........
I NOTE: The stratification lines represent .......
........ 7S -II
........
the approxirr¡~te boundary between the ........
.........
soil types. The transition may be gradual. ........ 45 1.5 - 130
.......
........ _ w
.......
........
I .......
........ -
. .,....
........
.......
........
........ -
........
.........
0/'0"-"
....... -
I ........
.........
........
.........
Coarser grained at 80.0 feet, moist, slight petroleum odor ........ 80 ~ II
.,.,.
........
.,..... 49 ND 95
........ -
........
........
I .,....
........
......... -
"......
........
........
.......
... . -
I Brown silty sand with gravel, fine to coarse grained sand, fine G .'. · . Very SM/
to medium grain gravel, subanuglar to rounded, moist, slight .'. dense GM -
.'.
petroleum odor .'. I 8S -If'
.'.
". - Ii; 65 ND 78
I ". -
,
-
I -...-...-. -
Light brown sand, fine to medium grained, poorly graded, G ........ Dense SP
.......
........ -
slightly moist, slight petroleum odor ....... NO = Not Detected
........
.......
........ -- = Not Analyzed
........ 90-1II,r,:;::
"......
I 864-9, ¡Y13 SF'EB EXPLORATORY BORING LOG - EB-4
BAKERSFIELD POST OFFICE
I Bakersfield, California
LO\VNE\~ASSOCIA TES
BORING - EB-4
I E nvi ron m ental/Geotech n ¡callE ng i n eeri ng Services 864-9, August 1992
I DRILL RIG: Mobile B-53 SURFACE ELEVATION: - WGGED BY: SF
I DEPTH TO GROUJ\1])WATER: Not BORING DIAMETER: 8 inches DATE DRILLED: 7/22-7/23/92
encountered
... t '" ~E ~I:J.'" s! ~gJ
Q z Ë ~ ~~i ~j
g z .~ ~J ~::E
DESCRIPTION AND REMARKS '" ...
I ~ C) ... bJæ ~ E!iig šg
'" In ~
.... z 0...... ." ~~e. ¡.. ~
8 >
........
Light brown sand (continued) G ....... Dense SP
...~... 42 ND 127
.......
I "......
.......
........
.......
,......
.......
",."...
.......
,......
....... Very
........
I ....". dense
........
.......
......,
.......
........
.......
........ 9S
.......
........
I ....... ND 143
........
.......
........
.......
........
....".
........
.......
........
I .......
Brown sandy silt, fine to medium grained sands, slightly moist H Hard ML
to moist, very slight petroleum odor
I ND 17.0
I
Light brown sand,o fine to coarse grained, well graded, slightly Dense SW
I moist, slight petrolum odor 10 32
II::
...:. 4S ND 28
....
Brown sandy silt, fine to medium grained sand, slightly moist, H Hard ML "';;;:
I slight petrolum odor
I Light brown sand, fine to coarse grained, well graded, slightly Dense S\X1
moist, no petroleum odor
fr,
m 45 1\1]) 21
I m'"
I Finer grained at 115.0 feet
11 I·'
I '~:::::. 35 ND 9.8
~::::::
c-:.:.:.
Bottom of Boring - 116.5 feet
I
NOTE: The stratification Jines represent
the approximate boundary between the
soi1 types. The transition may be gradual.
8B4-9. 8110 SF'EB
12
ND = Not Detected
-- = Not Analyzed
I
I
EXPWRATORY BORING WG - EB-4
BAKERSFIELD POST OFFICE
Bakersfield, California
LOVlNE\'-ASSOCIA TES
E nvi ron mental/Geotech n ical/Eng in eering Services
BORING - EB-4
864-9, August 1992
I
-- -----------
I DRILL RIG: Mobile B-53 SURFACE ELEVATION: LOGGED BY: SF
I DEPTIi TO GROtJ1l,TJ)WATER: Not BORING DIAMETER: 8 inches DATEDRIliED: 7/23/92
encountered
t DO ã,,'" ¡¡j ~~
... Q Z ~ ~ª ~ I~i ~J
g z ~ !J ~:El
DESCRIPTION AND REMARKS '"
I ~ § ¡¡; ... t>J§: ! ¡¡S 0"
z § Q,-, 13e. ~ ~ sg
8 .... >
3 inches asphalt A ........ sp
.........
I ~......
Brown fIDe grained sand observed in soil cuttings .........
........
.......
........
....,.
..."....
.........
........
.......
I ........
....,.
~·fI··"
....,.
........
.......
"."."
........
........ 5
.......
I ........
.......
........
.......
........
.......
,......
.......
".....".
.......
........
I ........
........
\ ........
........
........
........
.......
".."..".
.......
........
I ....... 10
".."..".
.,....
........
.......
".......
.......
........
.,....
"'......
........
I ......".
....,.
........
.......
Brown sandy silt, yery fine grained sand, slightly moist B Stiff Ml.
I 15
Light brown sand, fIDe grained, poorly graded, slightly moist C ~.....'. Medium SP ND 4.8
........
.......
........ dense
I .......
.../'...
.......
........
.......
".......
........
........
.......
........
I, .......
........
.......
".."....
.......
........ 20
.......
........
.......
........
........
I ........
........
........
.......
........
.......
".......
........
......".
.......
I ........
.......
........
.......
".......
.......
........
....... 25
........
.......
........
I, ........ 16 ND 20.2
........
.......
........
.......
........
.......
'::"::.':
........
I ;.':~':;.
.......
NOTE: The stratification lines represent ........
.......
........
the approximate boundary between the .......
........ ND = Not Detected
.......
soil types. The transition may be gradual. ........ -- .~ Not AnaJyzed
....... 30
I ........
864-9,8114 SF·EB EXPWRATORY BORING WG - EB-5
BAKERSFIELD POST OFFICE
I ' Bakersfield, California
LOVlNE\~ASSOCIA TES
I Environmental/Geotechnical/Engineering Services
BOIliNG - EB·5
864-9, August 1992
I DRID. RIG: Mobile B-53 SURFACE ELEVATION: - LOGGED BY: SF
Not
I DEPTH TO GROUNDWATER: encountered BORING DIAMETER: 8 inches DATE DRILLED: 7/23/92
t '" ~~~ Ii! ~~J
... Q z ~ ~~ ~ ~J
DESCRIPTION AND REMARKS g ~ ~ Do ~~~ ~J
I ~ ~ ... l.1Jæ ~ E!1ig
In § a~
z 0,-" ~~8 I- ~
8 Do >
"...... Medium SP
Light brown sand (continued) C .......
......J'
.,.,. dense -
I, ,.,.'"
.......
...,.",
.......
......J' -
.......
,......
.......
"....... -
....,.
I ".......
........
"."...
....... -
..."...
.......
".......
.'\¡,....
Fine to medium grained at 35.0 feet, very slight petroleum odor ......... 3S -II
.......
,."...
I ........ 19 ND 32
........ --
........ - '.
........
.......
...,.,
........ -
........
.......
........
I ........
Brown silty sand, very fine grained, slightly moist D :: °0 '. Dense SM
:.. °0 '.
": / ". '. -
:.. ..
I 0: .: °0 '. 4O~11
mj 34 ND - 6.8
,
I -
... ...
Light brown sand, fine to medium gï..ined, poorly graded, E ........ SP -
".~...
.,.... Dense
slightly moist ........
.,....
..."... -
........
I ........
.......
,...... <S ~ II
........
........
.......
........ 32 ND
....... -
"......
.,....
........
I .......
........ -
.......
........
.,....
........
.....,. -
........
........
........
I ........ -
........
NOTE: The stratification lines represent ........
~......
....,.
the approximate boundary between the "...... 50-
........
soil types. The transition may be gradual, ........
........
.........
.,..... -
I ........
.......
........
........ -
, ...~...
.,.....
........
~...~~. -
I Light brown sand, fine to coarse grained, well graded, slightly E Very SW
moist, very slight petroleum odor Dense -
55 -Ir=
I: - Iii 55 J\7D --
-
I -
::-.:: - ND = Not Detected
Gravels at 60.0 feet :::::::. 60- -- = Not AnaJyzed
I ."
854-9.&'14 SF'EB EXPWRATORY BORING WG - EB-5
BAKERSFIELD POST OFFICE
I Bakersfield, California
LOVlNE\'-ASSOCIA TES
BORlNG· EB·5
I E nvi ronmenlalj Geolechn icallE ng ineering Services 861,9, August 1992
IDRIil RIG: Mobile B-53 SURFACE ELEVATION: - LOGGED BY: SF
IDEPTH TO GROUNDWATER: Not BORING DIAMETER: 8 inches DATE DRILLED: 7/23/92
encountered
t; ~~i !lmJ
... ... ~~ ¡¡
Q Z ~ g ~1
g ~ ~ ::z ~J
« ! ~:E
DESCRIPTION AND REMARKS ... E~g
I' ~ ¡1 t:1 ~æ ~ 0'"
¡;; :i: sg
II) ... z s¡ 0,-, ... ~~e ~
0 >
u
Light brown sand (continued) E Very SW
I' Dense
I Minor fIne to coarse gravel at 65.0 feet, moderate 55 ND
troleum odor 65
I Brown clayey silt gradually changing to sandy silt, very fIne P Stiff ML
sand, moist, moderate petroleum to 16 1.6
Moderate petroleum at 67.0 feet Very
stiff
I No petroleum odor at 68.5 feet 21 1.9
.......
Light brown sand, fine grained, poorly graded, slightly moist, ........
G ....... Dense SP 36 ND
........
slight petroleum odor .".,.
........
I ....... 70
......~
........
........
.........
........
.....,.
"."."
.....,.
........
I .......
........
.........
........
........
........
........
........
.......
........
.....,.
I ........
.......
........ 75
.......
........
.........
...",,,
.......
"'.....
........
I ........
.,....
..'.,.'..
........
........
.......
........
.......
........
........
........
I .......
........
....... '
~"(~I
Slight petroleum odor at 80.0 feet ........ 80
....... f:::::
"."." M
....... 58 1'-'1)
"."."
...'...
I ........ m
........
b"."
.......
~.:~.:~~
"."."
.......
"."."
.......
I ........
.......
........
.......
"."."
.......
Lenses reddish brown sandy silt at 85.0 feet ........
.,.... 85 r¡::
"·b.·
.........
I ......... 1 43 !"m
.........
"'''..'
.......
.......... to:,::'
Bottom of Boring ~ 86.5 feet
I
NOTE: The stratification lines represent
the approximate boundary between the
soil types. The transition may be gradual.
90
ND ~ Not Detected
-- = Not Analyzed
I 864-9,6110 SF'EB
EXPLORATORY BORING LOG - EB-5
BAKERSFIELD POST OFFICE
I Bakersfield, California
LOVlNE\~ASSOCIA TES
I E nvironmental/Geotechn ical/Eng ineering Services
BORING· EB-5
864·9, August 1992
I DRILL RIG: Mobile B-53
SURFACE ELEVATION:
BORING DIAMETER: 8 inches
LOGGED BY: SF
DATE DRILLED: 7/23/92
Not
IDEPTIf TO GROUNDWATER: encountered
I
..t t; þ ~ß ~e~ ¡¡ ~~}
c::a z ~ 9 e~¡ ~¡
g i5 ~ 6I} ~~
DESCRIPTION AND REMARKS ... '?
~ t:) ::! '"-J¡f ~ EE9
þ II) ~ ::: S~
II) ... z ~ 0,-, ~~5 ¡:
0
u ... >
3 inches asphalt ./ A ..-:¡.-:~ SP
....... -
........
Brown fme grained sand observed in soil cuttings ........
,."....
.......
...,.", -
.......
,.,....
.......
...,.... -
.......
...,...
.......
...,..,
....... -
........
........
.........
........
"."... S-
........
........
.......
........ -
.........
"......
.......
..·rI·..
....... -
........
........
........
.......
"...... -
.......
........
.......
........
.......
I ........
.......
........
I ....... 10-
I ........
.......
........
.......
........ -
........
........
.,....
......".
....... -
........
........
........
....... -
........
.......
- ........
.......
........ -
.......
........
.......
.........
........ 15-
........
.......
........
....... -
Light brown sand, fme to coarse grained, well graded, slightly C Dense SW
moist, no petroleum odor -
-
-
20- ~:,
.....
¡..'" 38 1'\1]) --
,
-
-
-
25-
-
-
-
NOTE: The stratification lines represent
the approximate boundary between the - ND .. Not Detected
soil types. The transition may be gradual. 30- - .. Not Ana1yzed
I
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,I
I 864-9,8114 SF·EB
EXPLORATORY BORING LOG . EB-6
BAKERSFIELD POST OFFICE
BakersfieJd, CaJiforrua
I
LOVlNE\~ASSOCIA TES
E nvi ron mental! Geotechn ical/Eng ineering Services
BOlliNG - EB-6
864-9, August 1992
I
I DRIll. RIG: Mobile B-53
Not
I DEPTIi TO GROill-r¡)WATER: encountered
SURFACE ELEVATION: -
BORING DIAMETER: 8 inches
LOGGED BY: SF
DATE DRILLED: 7/23/92
I
I
I
I
t; ... ~"'..., Ii! 1:!~7
,.. Q z ~ ~E ~ g~~ ~!
g z ~ !J ~:E
DESCRIPTION AND REMARKS ... ...
~ CI ,.. tJJæ ~ ~~j
... ~ ~ . g¡ 9 !:
on ,.. 0..... ~",e !:
8 >
Light brown sand (continued) C Dense SW
-
-
-
-
3S-
-
Brown silty sand with interbedded layers of sandy silt and silty D " " Medium SM
.-
"
clay, moist, very slight petroleum odor .- dense -
'.
.-
" '.
..
I " " 40- I'
..
" "
.. 30 ND -
'. "
.. -
'. " ,',
..
" "
.. -
::...:::: "
"
-
Sands with gravel;in soil cunings E S~,
. -
: 45-
-
-
-
-
50-
-
-
-
..
55-
-
-
-
NOTE: The stratification lines represent
the approximate boundary between the - ND Not Detected
a
soil types , The transition may be gradual. 60- -- - Not AnaJyzed
I
I
I
I
I
I
I
I
I
I
I
I
I
854-9,&'14 SF'EB
EXPLORATORY BORING LOG - EB-6
BAKERSFIELD POST OFFICE
Bakersfield, Califorrua
LO\VNE\'-ASSOCIA TES
E nvironmentol/Geotechn ¡col/Eng ineering Services
BORING· EB-6
864-9, August 1992
I
i:>RIU RIG: Mobile B-53
SURFACE ELEVATION: -
BORING DIAMETER: 8 inches
LOGGED BY: SF
DATE DRILLED: 7/23/92
Not
I DEPTII TO GR01Th"DWATER: encountered
I
t; III ~~~ ¡¡ ~t~
g Q z ~ -E ! :2,..
15 ~ ~æ ~~i ~1 ËlJ
DESCRIPTION AND REMARKS .. Ii'
~ \:) = ~ E~9
::¡ ~ s¡ 0,-, ~ee. ~ ~ ~g
8 >
Sands with gravel (continued) E ~~ SW
-
-
-
.
Brown clayey silt/silty clay gradually changing to very frne F Stiff Ml. - Ii
,..
grained silty sand, low plasticity, slightly moist, very slight 29 1.1 -
petroleum odor · . 65-
· . Dense SM
· . -
.. .'.
Light brown sand frne to medium grained, poorly graded, ........ -
G ~.,... Very SP
....,.
slightly moist, very slight petroleum odor ........ dense
.......
........ -
.......
........
........
........ -
.......
........
.......
........
, ....... 70-
........ I"
........ :~.:.
........ 67 ND
....... -
........ -
':.':::::. :::::
=::..
Bottom of Boring - 71.5 feet -
-
:
-.
\ 75-:
-
-
-
-
80-
-'
-
-
-
85-
-
-
-
NOTE: The stratification Jines represent
the approximate boundary between the - ND - Not Detected
soil types, The transiûon may be gradual. 90- -- R Not Analyzed
I
I
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I
I
I
I
I
I
I
I
I
I
I
I
864-9. &'10 SF'EB
EXPWRATORY BORING WG - EB-6
BAKERSFIELD POST OFFICE
Bakersfield, California
LOVlNE\~ASSOCIA TES
Environ mentol/Geotechn icol/E n!:¡ ineering Services
BORING - EB-6
864·9, August 1992
I
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»
u
u
(1)
:J
0....
x·
OJ
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B-1
APPENDIX B
ANALYTICAL RESULTS
The refrigerated soil samples were delivered to
Sequoia Analytical Laboratory in Redwood City,
California. Chain of custody documentation was
maintained for all samples. Attached are copies of
the analytical results and the chain of custody forms.
Sequoia is certified by the State of California as a
Hazardous Waste Testing Laboratory and as an
Approved Water and Wastewater Laboratory.
LOWNEY ASSOCIATES
',,[
I
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I
I Quality Control Data
I Date Analyzed:
I Surrogate Recovery, %:
(QC Limits = 70-130%)
I
I
SEQUOIA ANALYTICAL
I f\~~_
Maile A. Springer ''(\
I Project Manager \,j
~ !!!~~!~ .~~~~!!I~~L
~ (415) 364-9600.. FAX (415) 364-9233 .
AUG :1 4
. \." . :
_ OJ ... ;_
. . .
te ~ -... '<g.- ~.;, ~;! 'k ~ ¡;cJ. j;.,.J;I
~.~-
mA05 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992=::::
::::Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992:::::
:':I::~g:;=~:~=~g:~:j::(=~:~~:~=~=~(~~~~=;:~=::,(:=:,((::::::==:::r::::=:=:::=:::=:::~::~~~=::~::=~=~=~:;:::=:=j:::=:::rr,=::=ig;ci~~i=(:::=(((:::::rr'(((:=:=:=:::::r::=::=:(:::=(:t:::=:=:=:rrr'=:'(::::::(:=::(:::=(::::::::(::::::::(:::::r':'(((:'?::::::'(:'((((((:r:::=:::::=:::::::r::=::::}
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Purgeable
Hydrocarbons
1.0
Sample Sample Sample Sample Sample Sample
I.D. I.D. I.D. I.D. I.D. I.D.
207-4064 2Q7-4065 207-4066 207-4067 207-4068 207-4069
EB-1 5' EB-1 10' EB-1 15' EB-1 20' EB-1 25' EB-1 30'
N.D. N.D. N.D. N.D. N.D. N.D.
N.D. N.D. N.D. 0.024 0.010 0.11
N.D. N.D. N.D. 0.034 0.019 0.025
N.D. N.D. N.D. 0.0050 N.D. N.D.
N.D. N.D. N.D. 0.033 0.0080 0.010
Gas Gas Gas
Analyte
Reporting
Limit
mg/kg
Benzene
0.0050
Toluene
0.0050
Ethyl Be~zene
0.0050
Total Xylenes
0.0050
Chromatogram Pattern:
Report Limit Multiplication Factor:
1.0 1.0 1.0 1.0 1.0 . 1.0
7/29/92 7/29/92 7/29/92 7/29/92 7/29/92 7/30/92
GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-6
97 108 100 99 97 83
ç,
Instrument Identification:
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
2074064,JVL < 1 >
I
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I Quality Control Data
I Date Analyzed:
I Surrogate Recovery, %:
(QC limits· = 70-130%)
I
I
SEQUOIA ANALYTICAL
I í\~~~~."^---
Maile A. Springer '
I Project Manager \~
ffi !o~!~~!~ .~~~,!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233 ,
}405 Clyde Avenue Sample Matrix: Soil '--.----' Received: Jul 24, 1992:::::
:¡:¡Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992t:
·'I::~g:i=~:~:\:~:~=:;:::\~:~:':~:~=~==:=:~~~i:~:=rr=:=:::=:=::=rr:=====rr::==::=:=i:\=~~~:::~:~~g~:i=:=::::;=:r::=¡:::=:::=:¡~g:j~=~:~=:=::rr:==:=:====::=::\:?:\\\\==:=:r====:::===:::=?:=???:=:=:=:=:=:=:=:::\::\\\\\:=\:==¡:¡=¡=:=¡:??:=:::=??::?:\:???:=:=:\=?:\:??:\\=¡\::=?:\=:::=¡:==I!:::
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Analyte
Reporting
Limit
mg/kg
Purgeable
Hydrocarbons
1.0
Sample Sample Sample Sample Sample Sample
1.0. 1.0. 1.0. J.D. J.D. J.D.
207-4070 207-4071 207-4072 . 207-4073 207-4074 207-4075
EB-1 35' EB-1 40' EB-1 45' EB-1 50' EB-1 55' EB-1 60'
1.0 N.D. N.D. N.D. N.D. N.D.
0.24 0.12 N.D. 0.010 0.044 0.017
0.31 0.16 0.0060 0.020 0.069 0.020
0.019 0.012 N.D. N.D. N.D. N.D.
0.14 0.081 N.D. N.D. 0.024 N.D.
Gas Gas Gas Gas Gas Gas
Benzene
0.0050
Toluene
0.0050
Ethyl Be"!zene
0.0050
Total XyJenes
0.0050
Chromatogram Pattern:
Report Limit Multiplication Factor:
Instrument Identification:
1.0 1.0 1.0 1.0 1.0 1.0
7/29/92 7/29/92 7/30/92 7/30/92 7/29/92 7/30/92
GCHP-7 GCHP-7 GCHP-6 GCHP-6· GCHP-7 GCHP-6
81 108 86 89 123 89
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
2074064.JVL <2>
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Q:\ !!~~!?!~ .~~~~!!~~L
~ (415) 364-9600 · FAX (415) 364-9233
:mA05 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992.:J
~:::Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992t:1
·:,::~:g:~:~~:\:~:~::;:~t~~:~~,~~~:~::·:i~~~~:~:::::~~:~~t~::'~:tt:r~:r::::~tt:j~~:~~~::~~;:~:~:~:~:::=::;::~~::~:~~::r~::1:~:i~¿:~~ttt::~r::::~::tttttt:::rrt:~~:~:~~~t:tt::ttt:tt::::t:~:t~ttttt:::::::::::~~::tt:~t:ttt~~:t~tt~::~:t~:t:t~:t~:::t:~::ttt~::t:t::.i,i
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit I.D. I.D. I.D.- I.D. I.D. I.D.
mg/kg 207-4076 207-4077 207-4078 207-4079 207-4080 207-4081
EB-1 65' EB-1 70' EB-1 75' EB-2 10' EB-2 15' EB-2 20'
Purgeable
Hydrocarbons I 1.0 N.D. N.D. N.D. N.D. N.D. N.D.
Benzene 0.0050 0.15 0.11 0.041 N.D. N.D. N.D.
Toluene 0.0050 0.22 0.19 0.068 N.D. N.D. N.D.
Ethyl Be"1zene 0.0050 0.010 0.0080 N.D. N.D. N.D. N.D.
Total Xylenes 0.0050 0.077 0.056 0.020 N.D. N.D. N.D.
Chromatogram Pattern: Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/30/92 7/29/92 7/29/92 7/29/92 7/29/92 7/30/92
Instrument Identification: GCHP-6 GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-6
Surrogate Recovery, %: 88 105 116 113 113 97
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were ~ot detected above the stated reporting limit.
SEQUOIA ANALYTICAL
\~~\L~~ /--
Maile A. Springer rj
Project Manager '
2074064.JVL < 3 >
I
I
I~~~~
t405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992M
1::::Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992':::::
,:,::~~:i:~:~:g~~:=:::::;:~:~g:~:::G~=~~;:~:r:r:=::rrr:::::::::=::r:::::r::Ä:\:~~~:::~;~:~:~:i:::=::;:r=:::r::::=::~~:;:~::~r::rrri:rrr:r:rrrr::::::r:=:::::::::::::::rrrt:::::=:rrr:r::rrr:=:=:rr:r:=:::::r::::r=r::rrrrr::::r:::::r::r:r::r:::::=:::=:::=:r=:=:::::=::::!I:1
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ro!!~~~!~ .~~~~!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D.
mg/kg 207-4082 207-4083 207-4084 207-4085 207-4086 207-4087
EB-2 25' EB-2 30' EB-2 35' EB-2 40' EB-2 45' EB-2 50'
Purgeable
Hydrocarbons 1.0 N.D. N.D. N.D. N.D. N.D. N.D.
Benzene 0.0050 N.D. N.D. 0.033 0.054 N.D. N.D.
Toluene 0.0050 N.D. N.D. 0.013 0.069 0.015 0.0090
Ethyl Be'1zene 0.0050 N.D. N.D. N.D. 0.0050 N.D. N.D.
Total Xylenes 0.0050 N.D. N.D. 0.020 0.033 0.0080 0.0080
Chromatogram Pattern: Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/29/92 7/30/92 7/29/92 7/29/92 7/29/92 7/29/92
Instrument Identification: GCHP-7 GCHP-6 GCHP-7 GCHP-7 GCHP-7 GCHP-7
Surrogate Recovery. %: 96 92 95 99 102 98
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N,D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
I ~\o.,.s¿~~~,
I Maile A. Springer ¿;-----/
Project Manager
, 2074064.JVL <4>
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::::405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992!::::
:\\\Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 19921::::
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TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION,
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit I.D. J.D. I.D. I.D. I.D. J.D.
mg/kg 207-4088 207-4089 207-4090 207-4091 207-4092 207-4093
EB-2 55' EB-2 60' EB-2 65' EB-2 70' EB-2 75' EB-2 80'
Purgeable
Hydrocarbons 1.0 N.D. N.D. N.D. N.D. N.D. 1.0
Benzene 0.0050 N.D. 0.0080 N.D. 0.014 0.010 0.14
Toluene 0.0050 0.014 0.010 0.013 0.025 0.019 0.36
Ethyl Be'1zene 0.0050 N.D. N.D. N.D. N.D. N.D. 0.023
Total Xylenes 0.0050 0.0070 N.D. N.D. 0.0050 N.D. 0.19
Chromatogram Pattern: Gas Gas Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/29/92 7/29/92 7/29/92 7/29/92 7/29/92 7/29/92
Instrument Identification: GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-7
Surrogate Recovery, %: 95 100 99 92 99 97
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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2074064.JVL <5>
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{405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992r¡
tMountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992:::::
:[[:::~~:;:~~::~:~,:;?:,:~~~:~:g~::::~g~~i:~:t:::r::r:?:rt:'::;:::::::r~i:~:~~~:::~:~~:~:::;::::~::;::::::::?::::::::~g:0rig~i::r:::::::?:':::r:::??:r':':::rrrr:::::::?:::t?:':t:::r::r::r:r~rrr::r::::::::::::~::r~'?::::?::?:::::':':::r:::::?:r::'?:r:::??::?:::::'?::?::::::::,·1::,
TOTAL PURGEABLE PETROLEUM HYDRÖCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit 1.0. 1.0. 1.0. 1.0. 1.0. 1.0.
mg/kg 207-4094 207-4095 207-4096 207-4097 207-4098 207 -4099
EB-2 85' EB-2 90' EB-3 15' EB-3 20' EB-3 25' EB-330'
Purgeable
Hydrocarbons 1.0 N.D. N.D. 4,300 1,500 1,300 1,400
Benzene 0.0050 N.D. N.D. 29 18 12 9.6
Toluene 0.0050 N.D. N.D. 280 190 100 110
Ethyl Benzene 0.0050 N.D. N.D. 83 47 31 30
Total Xylenes 0.0050 N.D. N.D. 600 360 200 210
Chromatogram Pattern: Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 25 1,000 500 400
Date Analyzed: 7/29/92 7/30/92 8/2/92 8/1/92 8/3/92 8/2/92
Instrument Identification: GCHP-7 GCHP-6 GCHP-6 GCHP-2 GCHP-6 GCHP-6
Surrogate Recovery, %: 73 100 87 100 113 86
(QC Limits = 70-130%)
Purgeable Hydrooarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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2074064.JVL <6>
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:::A05 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992{::
::::Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992::::::
I::i::~~:~:~:~::g:~::;:::::::~:~~:~:g:~::::~~~;:~:::t'::'tttt':::t:::::::::::::(:::1:~~:::~;:~:~,~:~,:::::;:::::::::::::,(::ªg:ici::~::gg:::tt:(:::t'((::::::::((((:::::::::::'((?::::::::::(:'(((((::::::(:::::::::{::{:::::::::::::}::t::::::::::::}}}}}:{:::::::::::i:::::::,:::::::::/{:{:::::::::::::::':,:
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Samplè Sample Sample
Analyte Limit I.D., I.D. I.D. I.D. I.D. I.D.
mg/kg 207-4100 207-4101 207-4102 207-4103 207-4104 207-4105
EB-3 35' EB-3 40' EB-3 45' EB-3 50' EB-3 55' EB-3 60'
Purgeable
Hydrocarbons 1.0 310 1,300 4,200 490 1,300 3,400
Benzene 0.0050 2.0 19 48 2.6 6.5 36
Toluene 0.0050 17 140 400 30 81 340
Ethyl Beozene 0.0050 6.8 37 100 9.2 29 84
Total Xylenes 0.0050 48 240 700 63 200 590
Chromatogram Pattern: Gas Gas Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 200 100 1,300 200 500 2,000
Date Analyzed: 8/3/92 8/4/92 8/2/92 8/2/92 8/4/92 8/2/92
Instrument Identification: GCHP-6 GCHP-7 GCHP-6 GCHP-6 . GCHP-7 GCHP-6
Surrogate Recovery, %: 104 96 84 84 107 88
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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2074064,JVL <7>
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::¡¡A05 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992.:::::
¡::¡Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Amended: Aug 13, 1992:::::
:¡:,:,~gi·~~::~:~::::::t~:~::~:~n:::~~~~;:~r:t:::::r:t:::rr:tt::::::::::i,!:~~~::·~~:m:~,~:~·:,~,,::::::t':':::'r¡gi0::~"g:~,::,::,,::t'r:::t:::r::r:::t:::::::::r:t:::::rr:::t:::rrrrr:r,t:t::::'r::::,'rr:rrrrrrrrrr::,:::::r::::::,t:,:::::::rr::::,::,::,::t::::::=:t::::::t:::"
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample 0
Analyte Limit I.D. I.D. "D. I.D. I.D. I.D.
mg/kg 207-4106 207-4107 207-4108 207-4109 207-4110 207-4111
EB-3 65' EB-4 15' EB-4 20' EB-4 25' EB-4 30' EB-4 35'
Purgeable
Hydrocarbons 1.0 2,200 N.D. 5.8 N.D. N.D. 2.1
Benzene 0.0050 23 0.012 0.056 0.016 0.052 0.044
Toluene 0.0050 210 0.071 0.46 0.027 0.092 0.24
Ethyl Benzene 0.0050 58 0.017 0.14 N.D. 0.010 0.073
Total Xylenes 0.0050 380 0.11 1.0 0.015 0.063 0.46
Chromatogram Pattern: Gas Gas Gas Gas Gas Gas
I Quality Control Data
I Report Limit Multiplication Factor:
I Date Analyzed:
I Instrument Identification:
Surrogate Recovery, %:
(QC Limits = 70-130%)
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500 1.0 1.0 1.0 1.0 1.0
7/30/92 7/30/92 8/4/92 7/30/92 8/2/92 7/30/92
GCHP-6 GCHP-7 GCHP-7 GCHP-7 GCHP-7 GCHP-1
104 96 107 96 96 87
LC~.",
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
þ,UG 1 4 :
SEQUOIA ANALYTICAL
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{405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992:{
I 1: Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992::::::
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TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D.
mg/kg 207-4112 207-4113 207-4114 207-4115 207-4116 207-4117
EB-4 40' EB-445' EB-4 50' EB-4 55' EB-4 60' EB-4 64-
64.5'
Purgeable
Hydrocarbons 1.0 1.8 1.1, 1,900 280 420 1,000
Benzene 0.0050 0.034 0.031 6.0 2.0 4.5 11
Toluene 0.0050 0.13 0.11 82 23 46 120
Ethyl Benzene 0.0050 0.026 0.021 32 6.8 12 27
Total Xylenes . 0.0050 0.19 0.17 250 50 91 190
Chromatogram Pattern: Gas Gas Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 100 200 250 1,000
Date Analyzed: 7/30/92 8/2/92 8/1/92 8/1/92 8/1/92 8/1/92
Instrument Identification: GCHP-7 GCHP-7 GCHP-3 GCHP-3 GCHP-3 GCHP-3
Surrogate Recovery, %: 114 105 119 106 88 96
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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I [:~:Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992:t
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TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit J.D. J.D. J.D. J.D. J.D. I.D.
. mg/kg 207-4118 207-4119 207-4120 207-4121 207-4122
EB-4 EB-4 EB-4 EB-4 75' EB-4 80'
67.5-68' 66.0-66.5' 69-69.5'
Purgeable
Hydrocarbons 1.0 58 970 N.D. 1.5 N.D.
Benzene 0.0050 1.3 21 0.051 0.25 0.17
Toluene 0.0050 3.3 130 0.11 0.41 0.27
Ethyl Bellzene 0.0050 0.24 29 0.010 0.021 0.0090
Total Xylenes 0.0050 1.8 180 0.64 0.15 0.060
Chromatogram Pattern: Gas Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 5.0 500 1.0 1.0 1.0
Date Analyzed: 7/30/92 8/6/92 7/30/92 7/30/92 7/30/92
Instrument Identification: GCHP-7 GCHP-1 GCHP-7 GCHP-7 GCHP-1
Surrogate Recovery, %: 98 102 102 103 84
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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{[405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992m::
'[:¡:Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992:::::
} Attention: Stason Foster First Sample #: 207-4123{:
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample . Sample Sample Sample Sample
Analyte Limit J.D. J.D. J.D. J.D. J.D. J.D.
mg/kg 207-4123 207-4124 207-'4125 207-4126 207-4127 207-4128
EB4 85' EB4 90' EB4 95' EB4 100' EB-4 105' EB-4 110'
Purgeable
Hydrocarbons 1.0 N.D. N.D. N.D. N.D. N.D. N.D.
Benzene 0.0050 0.028 0.013 0.011 0.0050 N.D. N.D.
Toluene 0.0050 0.033 0.023 0.0060 0.012 N.D.· N.D.
Ethyl Ben.zene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D.
Total Xylenes 0.0050 0.0070 0.0070 N.D. N.D. N.D. N.D.
Chromatogram Pattern: Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/30/92 7/30/92 7/30/92 7/30/92 7/30/92 8/4/92
Instrument Identification: GCHP-6 GCHP-7 GCHP-6 GCHP-1 GCHP-7 GCHP-7
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Surrogate Recovery, %: 74 109 98 -.,' 87 89 102
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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2074064,JVL < 11 >
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SEQUOIA ANALYTICAL
680 Chesapeake Drive · Redwood City, CA 94063
(415) 364-9600 · FAX (415) 364-9233
fA05 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992:::::
'I Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992r:
::'I::~g~:~~~:~:~:;::::;::~:~~:~:~:~:::~~~~i:~::;:::??:::::::::;:::?::::::?::::?:k:~:~~~:::~~¡~:~:::~::::;::¡::::??::?::i:g:0¿::1:::~:i::::::::::::::::::::,:::::,?????????::;:::?::::::?:::::::II'??????:::::I::'?:::'??:::'????????ii?????::??::::::::;::'::;::'?:'?:::':II,:,:::::j
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit 1.0. 1.0. 1.0. 1.0. 1.0. 1.0.
. mg/kg 207-4129 207-4130 207-4131 207-4132 2074133 207-4134
EB-4115' EB-5 15' EB-5 25' EB-5 35' EB-5 40' EB-5 45'
Purgeable
Hydrocarbons 1.0 N.D. N.D. N.D. N.D. N.D. N.D.
Benzene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D.
Toluene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D.
Ethyl Bel'1zene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D.
Total Xylenes 0.0050 N.D. N.D. N.D. N.D. N.D. N.D.
Chromatogram Pattern:
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/30/92 7/30/92 7/30/92 8/2/92 7/30/92 7/30/92
Instrument Identification: GCHP-7 GCHP-6 GCHP-7 GCHP-7 GCHP-7 GCHP-7
Surrogate Recovery, %: 112 100 112 93 108 110
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
(.\\",,~~._r;¿>4~'\,____
Maile A. Springer '\
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2074064.JVL < 12>
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r:405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992}:
~:~:Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 Reported: Aug 7, 1992::::::
:,,::~~~:~~~i~~:~:;:::t;:~~:~:~:~:'='::~~~¡~:::'='::::::::::'='~t:~t:(:::::::::::~:~:::!:~~~:::~~:~:~:!:~{~:;:::::::'='::~::::~:¡:g~ri~l::;:i:::rr:t:~:(r~~::rr:(::(:{~::~{t:::rrr:::::,=,r:~r~~~:::::::::::rrr:,=,:,=,:,=,::rr:~:::~:t{::::{:::::t{::{:r:::(:{:::rr:~:tt:::(~~:~~:r:t::{::::::~:I:I¡'
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte Limit J.D. I.D. I.D. I.D. I.D. I.D.
mg/kg 207-4135 207-4136 207-4137 207-4138 207-4139 207-4140
EB-5 55' EB-5 EB-5 EB-5 EB-5 EB-5 80'
64-64.5' 66.5-67' 68-68.5' 69.5-70'
Purgeable
Hydrocarbons 1.0 N.D. N.D. 1.6 1.9 N.D. N.D.
Benzene 0.0050 N.D. N.D. 0.31 0.41 0.029 . N.D.
Toluene 0.0050 0.0080 0.020 0.45 0.70 0.063 0.0090
Ethyl Bel'1zene 0.0050 N.D. N.D. 0.029 0.036 0.010 N.D.
Total Xylenes 0.0050 0.014 0.021 0.21 0.23 0.050 N.D.
Chromatogram Pattern: Gas Gas Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/30/92 8/6/92 7/30/92 7/30/92 7/30/92 7/30/92
Instrument Identification: GCHP-7 GCHP-1 GCHP-7 GCHP-6 GCHP-7 GCHP-7
Surrogate Recovery, %: 108 107 80 96 99 112
(QC limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard.
Analytes reported as N.D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
I f\~.Y_5\~~~~~_
, Maile A. Springer' ~
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2074064.JVL < 13>
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@405 Clyde Avenue Sample Matrix: Soil Received: Jul 24, 1992}[
¡::\Mountain View, CA 94043 Analysis Method: EPA 5030/8015/8020 . Reported: Aug 7, 1992[:[:
::,[:~~;:~~::~:~::;:::::::~:~~:~:~:~:::~~~~i:~rrrrr:}}:r::::::::::::::r:~:!:~~~:::~:~:TI:~:~:;:::=:::rrr::::::::¡gici:~::i::~:r::=::}}:r::::::rr,:,':':::}:rr:}:rrr:}::':=:::}}::}':'r::::::::::r:::::=:}}}:,':::}::':}=:::}::,rrr:::}::::::,::,::::::::}:::::rr::rr:::}::,:::'r::::r?:::=)
TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION
Reporting Sample Sample Sample Sample Sample Sample
Analyte limit J.D. I.D. I.D. I.D. I.D. J.D.
mg/kg 207-4141 207-4142 207-4143 207-4144 207-4145
EB-5 85' EB-6 20' EB-6 40' EB-6 65' EB-6 70'
Purgeable
Hydrpcarbons 1.0 N.D. N.D. N.D. 1.1 N.D.
Benzene 0.0050 N.D. N.D. 0.071 0.27 0.040
Toluene 0.0050 0.0060 N.D. 0.17 0.38 0.097
Ethyl Be~zene 0.0050 N.D. N.D. 0.0090 0.013 N.D.
Total Xylenes 0.0050 0.0060 N.D. 0.059 0.10 0.040
Chromatogram Pattern: Gas Gas Gas Gas
Quality Control Data
Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0
Date Analyzed: 7/30/92 7/31/92 7/30/92 7/30/92 7/31/92
Instrument Identification: GCHP-2 GCHP-6 GCHP-6 GCHP-7 GCHP-6
SUrrogate Recovery, %: 99 96 92 99 104
(QC Limits = 70-130%)
Purgeable Hydrocarbons are quantitated against a fresh gasoline standard,
Analytes reported as N,D. were not detected above the stated reporting limit.
SEQUOIA ANALYTICAL
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Project Manager . J
2074064.JVL < 14>
SEQUOIA ANALYTICAL % Recovery:
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{Mountain View, CA 94043 ...
::¡'Attention: Stason Foster ac Sample Group: 2074064 -145 " ..,..... Report~~:......AlI9J!....1,~~?)}
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EP A 8020 EPA 8020 EPA 8020 EPA 8020
I
Analyst: R.Geekler R.Geekler R.Geekler R.Geekler
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Jul 29, 1992 Jul 29, 1992 Jul 29, 1992 Jul 29, 1992
QC Sample #: GBLK072992 GBLK072992 GBLK072992 GBLK072992
Instrument 1.0. # GCHP-7 GCHP-7 GCHP-7 GCHP-7
Sample Cone.:. N.D. N.D. N.D. N.D.
Spike Cone.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.18
0.18
0.18
0.54
Matrix Spike
% Recovery:
90
90
90
90
Cone. Matrix
Spike Dup.:
0.19
0.19
0.19
0.57
Matrix Spike
Duplicate
% Recovery:
95
95
95
95
Relative
% Difference:
5.4
5.4
5.4
5.4
Cone. of M,S. - Conc. of Sample
Spike Cone. Added
x 100
Cone. of M.S, - Cone. of M,S,D,
(Cone. of M,S. + Cone. of M.S.D.) /2
x 100
2074064,JVL < 15>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ro !o~!~~!~ .~~~~!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233
:l:: Mountain View, CA 94043--
)Attention: Stason Foster ac Sample Group: 2074064 - 145 Reported: Aug 7, 1992:1;(;\
QUALITY CONTROL DATA REPORT
ANALYTE Ethyl-
Benzene Toluene Benzene Xytenes
Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
I
Analyst: E.Cunanan E.Cunanan E.Cunanan E.Cunanan
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Jul 30, 1992 Jul 30, 1992 Jul 30, 1992 Jul 30, 1992
ac Sample #: GBLK073092 GBLK073092 GBLK073092 GBLK073092
Instrument J.D. # GCHP-6 GCHP-6 GCHP-6 GCHP-6
Sample Cone.: _ N.D. N.D. N.D. N.D.
Spike Cóne.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.18
0.18
0.18
0.52
Matrix Spike
% Recovery:
90
90
90
87
Cone. Matrix
Spike Dup.:
0.18
0.18
0.18
0.53
Matrix Spike
Duplicate
% Recovery:
90
90
90
88
Relative
% Difference:
0.0
0.0
0.0
1.9
SEQUOIA ANALYTICAL % Recovery:
I ~"\ \\ \'ì ~ _.
, "-~'<..'''''~~'G./'.._---' Relative % Difference:
Maile A. Springer \.
I Project Manager
Conc, of M.S. - Conc. of Sample
Spike Conc. Added
x 100
Conc. of M,S. . Conc, of M.S.D.
(Conc. of M.S. + Conc. of M,S.D,) /2
x 100
2074064.JVL < 16>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I'
I
I
I
~ !!~~!?!~ .~~~~!!IS~L
~ (415) 364-9600 · FAX (415) 364-9233
fA05 Clyde Avenue ...
fMountain View, CA 94043 ..,
::!'Ättention: Stason Foster QC Sample Group; 2074064 - 145 ........... ...... ..F=!~P<?r.t~:........AlJ.QJ~....1~~?:r!
QUALITY CONTROL DATA REPORT
ANALYTE 'Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EPA8020 EP A 8020 EPA8020
Analyst: A. Maralit A. Maralit A. Maralit A. Maralit
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed; Jut 30,1992 Jut 30, 1992 Jul 30. 1992 Jul 30. 1992
QC Sample #: GBLK073092 GBLK073092 GBLK073092 GBLK073092
Instrument I.D. # GCHP-1 GCHP-1 GCHP-1 GCHP-1
Sample Cone.: . N.D. N.D. N.D. . N.D.
Spike Cónc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.18
0.18
0.17
0.50
Matrix Spike
% Recovery:
90
90
85
83
Cone. Matrix
Spike Dup.:
0.19
0.19
0.19
0.57
Matrix Spike
Duplicate
% Recovery:
100
95
95
95
Relative
% Difference:
11
5.4
11
13
SEQUOIA ANALYTICAL
% Recovery:
Conc. of M.S. - Conc. of Sample
Spike Conc. Added
x 100
\N\\ 0 (\' ,J"\....~ .
s ¡ - l L \. )!-... 1~ "'-. ----/
'Mail~Ã. Spring"èr' :~
Project Manager
êlative % Difference:
Cone. of M,S, - Cone. of M.S,D, .
(Conc, of M.S. + Cone. of M,S.D.) / 2
x 100
2074064,JVL <17>
.1
I
I
I
I
I
I
'I
I
I
I
I
I
I
I
I
I
I
I
~ !o~~~~!~ .~~~~!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233
tA05 Clyde Avenue:::::
t: Mountain View, CA 94043.""
{Attention: Stason Foster QC Sample Group: 2074064 -145 Reported: Aug 7, 1992j\
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA8020 EPA 8020 EPA 8020 EPA 8020
Analyst: A. Miraftab A.Miraftab A. Miraftab A.Miraftab
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Aug 1, 1992 Aug 1, 1992 Aug 1, 1992 Aug 1, 1992
QC Sample #: GBLK073192 GBLK073192 GBLK073192 GBLK073192
Instrument I.D. # GCHP-2 GCHP-2 GCHP-2 GCHP-2
Sample Conc.: . N.D. N.D. N.D. N.D.
Spike Cònc.
Added:
0.20
0.20
0.20
0.60
Conc. Matrix
Spike:
0.21
0.21
0.20
0.62
Matrix Spike
% Recovery:
105
105
100
103
Conc. Matrix
Spike Dup.:
0.21
0.21
0.21
0.63
Matrix Spike
Duplicate
% Recovery:
105
105
105
105
Relative
% Difference:
0.0
0.0
4.9
1.6
SEQUOIA ANALYTICAL
% Recovery:
Conc. of M.S. - Conc. of Sample
Spike Conc. Added
x 100
\0~~~<~ i~ Relative % Difference:
/VIaile A. Springer\..J~
Project Manager
Conc. of M,S. - Conc. of M,S,D.
(Conc. of M.S. + Conc. of M.S.D.) /2
x 100
2074064.JVL <18>
I
I
I
I
I
I
I
I
I
I
I
I
I
,I
I
I
I
~ !!~~~!~ .~~~~!!I£~L
~ (415) 364-9600 · FAX (415) 364-9233
:::A05 Clyde Avenue'····
:::::Mountain View, CA 94043 <::
/Attention: Stason Foster ac Sample Group: 2074064 - 145 Reported: Aug 7, 19921::::
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA8020 EPA 8020 EPA 8020 EPA 8020
Analyst: R.Geckler, R.Geckler R.Geckler R.Geckler
Reporting Units: mgjkg mgjkg mgjkg mgjkg
Date Analyzed: Aug 4, 1992 Aug 4, 1992 Aug 4, 1992 Aug 4, 1992
ac Sample #: GBLK080492 GBLK080492 GBLK080492 GBLK080492
Instrument I.D. # GCHP-7 GCHP-7 GCHP-7 GCHP-7
Sample Cone.:. N.D. N.D. N.D. N.D.
Spike Cånc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.20
0.20
0.20
0.59
Matrix Spike
% Recovery:
100
100
100
98
Cone. Matrix
Spike Dup.:
0.21
0.20
0.20
0.61 .,
Matrix Spike
Duplicate
% Recovery:
105
100
100
102
Relative
% Difference:
4.9
0.0
0.0
3.3
SEQUOIA ANALYTICAL % Recovery:
·1 r\(\~·(\ \\ _0.-.-- '
, \ ~\_.,--~~ ~i-----~[Relative % Difference:
Maile A. Springer' -' '\
I Project Manager
Conc. of M.S. - Conc. of Sample
Spike Conc. Added
x 100
Conc. of M.S. - Conc. of M,S.D.
(Conc. of M.S. + Cone. of M,S,D.) j 2 '
x 100
2074064,JVL <19>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
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I
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~ !!~~~!~ .~~~~!!I£~L
~ (415) 364-9600 · FAX (415) 364-9233
(¡405 Clyde Avenue ...':
:~¡¡~Mountain View, CA 94043 "..
"I::~~;~~~~~~~~~~~;~;~~~;~;~~~;~~g~~;~;ig~~~~f:::::::;:::::~~:~:::t~r~:::::::::::::::::~;:~:g~~~:~~~:~::~;:::~~r::â:~~~::;:;~~i~:0i:g::::;~~~:J~~i~~~::::::~r~~r;~:::t:::::::r:~:~~t~~~:t:;:rr:::}:~:;:::::~:::::::;}}::}:r:r:::~:;:~:~:~:;~;:;::}::::::}::::::~:~:~:r:~i;:r~~~:;:;i::::li¡
QUALITY CONTROL DATA REPORT
ANALYTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA8020 EPA 8020 .EPA 8020 EPA 8020
Analyst: A. Miraftab A. Miraftab A.Miraftab A.Miraftab
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Aug 2, 1992 Aug 2.. 1992 Aug 2, 1992 Aug 2, 1992
QC Sample #: GBLK072992 GBLK072992 GBLK072992 GBLK072992
Instrument I.D. # GCHP-6 GCHP-6 GCHP-6 GCHP-6
Sample Cone.:- N.D. N.D. N.D. N.D.
Spike Cóne.
Added:
0.20
0.20
0.20
0.60
()
Cone. Matrix
Spike:
0.15
0.15
0.15
0.45
Matrix Spike
% Recovery:
75
75
75
75
Cone. Matrix
Spike Dup.:
0.14
0.14
0.15
0.45
Matrix Spike
Duplicate
% Recovery:
70
70
75
75
Relative
% Differen'ce:
6,9
6.9
0.0
0.0
SEQUOIA ANALYTICAL
)í\(\) C"· --
, . \~~-'
, /;_!----.~:---,-\.:., ;~
Maile A. Springer ~
Project Manager
% Recovery:
Cone. of M.S. - Cone. of Sample
Spike Cone. Added
x 100
""---,-
Relative % Difference:
Cone. of M,S, . Cone, of M,S.D,
(Cone, of M.S. + Cone. of M.S,D,) /2
x 100
2074064.JVL <20>
I
I
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ŒA05 Clyde Avenue
I ~~,~~i~~~=i;'~;!~*,iœ;cx_~~~~~~
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ro !!~~~!~ .~~~~!!19~~L
~ (415) 364-9600 · FAX (415) 364-9233
QUALITY CONTROL DATA REPORT
ANALYTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EPA 8020 EPA 8020 EP A 8020
Analyst: R.Geckler R.G~ckler R.GeckJer R.Geckler
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Jul 1, 1939 Jul 1, 1939 Jul 1, 1939 JuJ 1, 1939
ac Sample #: GBLK073092 GBLK073092 GBLK073092 GBLK073092
Instrument I.D. # GCHP-7 GCHP-7 GCHP-7 GCHP-7
Sample Cone.: . N.D. N.D. N.D. N.D.
Spike Cónc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.19
0.19
0.19
0.57
Matrix Spike
% Recovery:
95
95
95
95
Cone. Matrix
Spike Dup.:
0.20
0.20
0.20
0.20
Matrix Spike
Duplicate
% Recovery:
100
100
100
100
Relative
% Difference:
.5.1
5.1
5.1
5.1
SEQUOIA ANALYTICAL
% Recovery:
Conc. of M.S. . Cone. of Sample.
Spike Cone. Added
x 100
i""- (\r - '~
V \! {~\¿~---·,z, /,,--- Relative % Difference:
Maile A. Springer «------
Project Manager, j
Cone, of M,S. - Cone, of M,S,D,
(Cone. of M.S. + Cone. of M.S.D,) /2
x 100
2074064,JVL <21 >
I
I
~¡¡~¡405 Clyde Avenue ...
11S~~~¡;;:q~~aw~~a~~~~
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
~ !o~!~~!~ .~~~~!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EP A 8020 EPA8020 EPA 8020
Analyst: E.Cuanan E.Cuanan E.Cuanan E.Cuanan
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Aug 3, 1992 Aug 3, 1992 Aug 3, 1992 Aug 3, 1992
QC Sample #: GBLK080392 GBLK080392 GBLK080392 GBLK080392
Instrument I.D. # GCHP-6 GCHP-6 GCHP-6 GCHP-6
Sample Cone.: . N.D. N.D. N.D. N.D.
Spike Cònc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.20
0.21
0.20
0.61
Matrix Spike
% Recovery:
100
105
100
102
Cone. Matrix
Spike Dup.:
0.21
0.21
0.21
0.62
Matrix Spike
Duplicate
% Recovery:
105
105
105
103
Relative
% Difference:
4.9
0.0
4.9
1.6
SEQUOIA ANALYTICAL
% Recovery:
Cone. of M,S, - Cone. of Sample
Spike Cone. Added
x 100
N\.'\.{'~ G' ~
\',', , .' . '.'
\ ¡ \ r-.. '. '-
\ Maiìê A. sp;:,ng~r~ '~',<-
Project Manager " j
u__ Relative % Difference:
Cone, of M.S. - Cone, of M.S.D,
(Cone. of M.S, + Cone, of M,S.D,) /2
x 100
2074064,JVL <22>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ro !!!~2!~ .~~~~!!I~~L
~ (41~) 364-9600 · FAX (415) 364-9233
:::)405 Clyde Avenue "',
} Mountain View, CA 94043
:i:':~,~:;:~:~:\:~,~:,~:::,,::;,~~:~,~:Q':':~~~:~0~':':":'/::::::::':::::::::::':::'::':'/::"'~'~:::~:~:~:~:::;:::g:~~:~:~:~:::::;:~:ii~:::::;:::J::i:~:/:}::::::}'::::::::::/":::::::::::':':::::::}::::':}}}}'::r:::,:,:,//:,:,/::::;:~ili:~:;g:::",::::::::}::::,:~:~:~:,::::j;,:}:~::;:i:~,:i,i.¡
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
Analyst: R.Lee R.Lee R.Lee R.Lee
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Jul 31, 1992 Jul 31, 1992 Jul 31, 1992 Jul 31, 1992
QC Sample #: GBLK073D92 GBLK073D92 GBLKD73D92 GBLK073092
Instrument I.D. # GCHP-6 GCHP-6 GCHP-6 GCHP-6
Sample Cone.: - N.D. N.D. N.D. N.D.
Spike Cone.
Added:
0.20 .
0.20
0.20
0.60
Cone. Matrix
Spike:
0.19
0.19
0.19
0.56
Matrix Spike
% Recovery:
95
95
95
93
Cone. Matrix
Spike Düp.:
0.18
0.18
0.18
0.54
Matrix Spike
Duplicate
~ Recovery:
90
90
90
90
Relative
% Difference:
5.4
5.4
5.4
3.6
SEQUOIA ANALYTICAL
% Recovery:
Conc, of M.S, - Conc. of Sample
Spike Conc. Added
x 100
\~i"\O ,- r-....
1'\, \ ~' . 0 .
, ~''\I "- 't\>--- Belatlve % DIfference:
Maile A. Springer
Project Manager '~
Conc. of M.S. - Conc. of M.S.D,
(Conc. of M.S. + Conc. of M,S,D,) /2
x 100
2074064.JVL '<23>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
'I
I
I
I
ro !o~!~~!~ .~~~~!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233
::;:405 Clyde Avenue
I[:[Mountain View, CA 94043.
,1:':~!g:i:~i:~:~:;:!r:~:~~:~gg::0g:~~i:~:::\t::::?::::::::?:r::r:::::::g~!::~;;~:~:!:i:::g:~:~:~~:~:::::î:g:0jg~i:::;:2:!;;~.:.:::r:;:::::::::::::::!?:::::\!:!:!:::::::t\\\\r:::?:r?:::::::::!?:::::!?::i:~~~:ig:::::::::::::::::::::::::~:~:~:::::!:0h::::~::¡;:~:'¡::::
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
Analyst: A.Miraftab A.Miraftab A. Miraftab A.Miraftab
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Aug 2, 1992 Aug 2, 1992 Aug 2, 1992 Aug 2, 1992
QC Sample #: GBLK073092 GBLK073092 GBLK073092 GBLK073092
Instrument I.D. # GCHP-7 GCHP-7 GCHP-7 GCHP-7
Sample Cone.: . N.D. N.D. N.D. N.D.
Spike Cònc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.19
0.19
0.19
0.58
Matrix Spike
% Recovery:
95
95
95
97
Cone. Matrix
Spike DUp.:
0.20
0.20
0.20
0.60
Matrix Spike
Duplicate
% Recovery:
100
100
100
100
Relative
% Difference:
v
5.1
5.1
5.1
3.4
SEQUOIA ANALYTICAL
% Recovery:
Conc. of M.S. . Cone. of Sample
Spike Cone. Added
x 100
N\r~~'A~L'~~~'\'
Maile~Springer ./
Project Manager. !,
.Relative % Difference:
Cone, of M.S. . Conc, of M,S.D,
(Cone. of M,S, + Cone. 01 M.S,D.) /2
x 100
2074064.JVL <24>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
ro· !!~~~!~ .~~~~!!I~~L
~ (415) 364-9600 · FAX (415) 364-9233
,¡::lòwrïëÿAssociäïes .. CliëinfProjecflD: #864~~f .
[:405 Clyde Avenue
¡::¡ Mountain View, CA 94043
:¡:¡:Attention: Stason Foster . ac Sample Group: 2074064 - 145 "HHHH'H' HHH'HHHHHHHHH,¡:¡~P()r:t~:H'HHJ)'l:IgJ'HH1.~~?:j:
. .
H
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
Analyst: A Miraftab A.Miraftab A.Miraftab A.Miraftab
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Aug 1, 1992 Aug 1, 1992 Aug 1, 1992 Aug 1, 1992
ac Sample #: GBLK072992 GBLK072992 GBLK072992 GBLK072992 ,
Instrument I.D. # GCHP-3 GCHP-3 GCHP-3 GCHP-3
Sample Cone.:, N.D. N.D. N.D. N.D.
Spike Cònc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.19
0.19
0.19
0.58
Matrix Spike
% Recovery:
95
95
95
97
Cone. Matrix
Spike Dup.:
0.19
0.20
0.19
0.58
Matrix Spike
Duplicate
% Recovery:
95
100
95
97
Relative
% Difference:
0.0
5.1
0.0
0.0
SEQUOIA ANALYTICAL
% Recovery:
Conc. of M.S. - Conc. of Sample
Spike Conc. Added
x 100
~\~ . r\ L\--,
Maiìe NPrìn~r/~,--j· -" \
Project Manager \
'"
Relative % Difference:
Conc. of M,S. . Conc. of M.S.D.
(Conc, of M.S. + Conc. of M.S,D,) /2
x 100
2074064,JVL <25>
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
CD !o~!.~2!~ .~~~~!!I~~L
~ (415) 364-9600 . FAX (415) 364-9233
IA05 Clyde Avenue ..
m: Mountain View, CA 94043
::::Attention: Stason Foster QC Sample Group: 2074064 - 145 . .. Reporte.~:..........,ð.lJ.R?,....1~~?::I
QUALITY CONTROL DATA REPORT
ANAL YTE Ethyl-
Benzene Toluene Benzene Xylenes
Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020
Analyst: R.Lee R.Lee I R.Lee R.Lee
Reporting Units: mg/kg mg/kg mg/kg mg/kg
Date Analyzed: Aug 6, 1992 Aug 6, 1992 Aug 6, 1992 Aug 6, 1992
QC Sample #: GBLK08-692 GBLK08-692 GBLK08-692 GBLK08-692
Instrument I.D. # GCHP-, GCHP-' GCHP-1 GCHP·1
Sample Conc.:- N.D. N.D. N.D. N.D.
Spike Cónc.
Added:
0.20
0.20
0.20
0.60
Cone. Matrix
Spike:
0.22
0.21
0.21
0.63
Matrix Spike
% Recovery:
110
105
105
105
Cone. Matrix
Spike DUp.:
0.22
0.22
0.22
0.64
"
Matrix Spike
Duplicate
% Recovery:
110
110
110
107
Relative
% Difference:
0.0
4.7
4.7
1.6
SEQUOIA ANALYTICAL % Recovery:
Cone. of M.S. - Cone. of Sample
Spike Cone, Added
x 100
rru f\
'¡ r .+-~<'
! _I,~~,,::.\..---\ ,..... '---"-'. Relative % Difference:
Maile A. Springer ,>\
Project Manager . __.o)
Cone. of M.S. - Cone, of M.S,D,
(Cone. of M.S. + Cone, of M,S.D.) /2
x 100
2074064.JVL <26>
-
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