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ARCHIVED REPORTS_XR0007236
EnvironmentalHealth
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EHD Program Facility Records by Street Name
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88 (STATE ROUTE 88)
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13975
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2900 - Site Mitigation Program
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PR0522057
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ARCHIVED REPORTS_XR0007236
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Last modified
11/20/2024 9:21:19 AM
Creation date
9/5/2019 2:20:29 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
2900 - Site Mitigation Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0007236
RECORD_ID
PR0522057
PE
2950
FACILITY_ID
FA0015024
FACILITY_NAME
USA GASOLINE #3756
STREET_NUMBER
13975
Direction
E
STREET_NAME
STATE ROUTE 88
City
LOCKEFORD
Zip
95237
APN
01908014
CURRENT_STATUS
01
SITE_LOCATION
13975 E HWY 88
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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EHD - Public
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. 2.3 Groundwater Monitoring <br /> Groundwater monitoring has been performed at the site on seven occasions since June of <br /> 1987 The sampling events was performed by AGS and Nations Groundwater Associates <br /> (NGA) Groundwater contamination was detected in samples from the monitoring wells <br /> during each monitoring event Benzene, toluene and xylenes were detected during the most <br /> recent groundwater monitoring event (November 12, 1992) <br /> According to reports by AGS and NGA, groundwater flowed consistently to the southwest <br /> from 1987 to April of 1991 However, in a report dated February 2, 1993, NGA depicted <br /> a northeasterly groundwater flow on November 12, 1992 Discussions with Mr Harlin Knoll <br /> of the PHS/EHD indicate that the northeast flow direction may be a one-tune anomaly or, <br /> more likely, may have resulted from incorrect calculations. <br /> 2.3 UST Removal <br /> The UST's and product lines were pressure tested for leaks in 1987 The tanks and piping <br /> passed the pressure tests, however, a faulty vapor recovery valve was discovered and <br /> repaired <br /> Two UST's were removed from the site in March of 1990 Gasoline contamination was <br /> detected in soil samples collected beneath the tanks According to the San Joaquin County <br /> Public Health Services - Environmental Health Division (PHS/EHD), approximately 800 <br /> cubic yards of gasohne-contaminated soil were removed from the tank excavation and <br /> stockpiled on-site <br /> 3.0 DEPTH TO GROUNDWATER <br /> According to the "Groundwater Monitoring Report" dated February 2, 1993, prepared by <br /> NGA, the depth to groundwater in November of 1992 was approximately 72 feet Current <br /> depth is expected to be approximately 70 feet- <br /> 4.0 SOIL BORING & MONITORING WELL INSTALLATION <br /> In a letter dated September 24, 1993, the PHS/EHD states that "the full extent of soil and <br /> groundwater contamination [at the site]must be identified and corrective action performed " <br /> GeoAudit believes that it may be possible to investigate the "full extent" of contamination <br /> at the site, with two additional soil borings and two additional monitoring wells The <br /> locations of the monitor ing wells and soil borings are depicted in Figure 2 After the extent <br /> of groundwater has been assessed, a corrective action plan (CAP) can be proposed. <br /> 0-1%—1 A.4.5a [.c <br /> t--Wuld R.—WP/12 ssssas 2 <br />
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