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ARCHIVED REPORTS_XR0008983
EnvironmentalHealth
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3500 - Local Oversight Program
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PR0545734
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ARCHIVED REPORTS_XR0008983
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Last modified
6/5/2020 2:07:20 PM
Creation date
6/5/2020 1:22:23 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0008983
RECORD_ID
PR0545734
PE
3528
FACILITY_ID
FA0010191
FACILITY_NAME
TRACY-PONTIAC-CADILLAC-GMC TRUCK
STREET_NUMBER
2450
STREET_NAME
TOSTE
STREET_TYPE
RD
City
TRACY
Zip
95376
APN
238020-06
CURRENT_STATUS
02
SITE_LOCATION
2450 TOSTE RD
P_DISTRICT
005
QC Status
Approved
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LSauers
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EHD - Public
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24 May 2001 <br /> AGE-NC Protect No 96-0254 <br /> Page 3 of 4 <br />' 31 STRATIGRAPHY <br /> Based on the findings from the CPT soil borings, cross section A-A' was constructed to depict <br /> Igeneral lithology beneath the site(Figure 3) Generally, the subsurface of the site from 1 foot bsg to <br /> approximately 70 feet bsg, was comprised mainly of silt, sandy silt, clayey silt, silty clay and clay <br /> Poorly graded sand, gravelly sand and silty sand layers were encountered from surface grade to <br /> approximately 1 foot bsg, 36 feet to 40 feet (Sand Zone A)and 61 feet to 65 feet bsg (Sand Zone B) <br /> CPT computer-generated boring logs are included in Appendix A <br /> The deeper sand zones, informally designated Sand Zone A and B are inferred to be the primary <br /> lateral migration paths of the dissolved contaminants The lateral continuity of the two sand zones <br /> in three dimensions is unknown <br />' 32 LABORATORY RESULTS OF "GRAB" GROUND WATER SAMPLES <br /> A total of four"grab"ground water samples were collected from CPT-1 and CPT-2 and submitted <br /> for laboratory analysis for the above mentioned constituents <br /> TPH-g, TPH-d and BTEX compounds, detected only in the water sample collected from the <br /> upgradtent Sand Zone B in CPT-2 (61 to 65 feet bsg), were present at concentrations of 110 <br /> micrograms per liter (ggll) TPH-g, 85 µg/l TPH-d, 2 4 ,ugll benzene, 3 3 ,ugll toluene, 1 3 µg/1 <br /> ethylbenzene and 5 9 ,ug/1 total xylenes Laboratory analysis of grab ground water samples collected <br /> from CPT-1 at depths of 26 feet to 30 feet, Sand Zone A (37 feet to 41 feet) and Sand Zone B (61 <br /> feet to 65 feet bsg) did not report any of the analytes at or above laboratory reporting limits <br /> Fuel oxygenated compound were not detected in the ground water samples The laboratory reports <br /> (MAI Lab I D 62602 through 62605) and chain-of-custody forms are presented in Appendix B <br /> Analytical results of the CPT "grab" ground water samples are summarized in Table 1 <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based upon data collected on 13 March 2001, AGE concludes the following <br /> • Generally, the subsurface of the site from 1 foot bsg to approximately 70 feet bsg, was <br /> comprised mainly of silt, sandy silt, clayey silt, silty clay and clay Poorly graded sand, <br /> gravelly sand and silty sand layers were encountered from surface grade to approximately 1 <br /> • foot bsg, 36 feet to 40 feet (Sand Zone A) and 61 feet to 65 feet bsg (Sand Zone B) <br /> I <br /> Advanced GeeEnvtronmental,Inc <br />
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