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ARCHIVED REPORTS_XR0007218
EnvironmentalHealth
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EHD Program Facility Records by Street Name
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88 (STATE ROUTE 88)
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14000
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3500 - Local Oversight Program
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PR0544811
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ARCHIVED REPORTS_XR0007218
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Last modified
11/20/2024 9:21:19 AM
Creation date
9/5/2019 1:51:05 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0007218
RECORD_ID
PR0544811
PE
3528
FACILITY_ID
FA0000091
FACILITY_NAME
Colonial Energy CE 40138 (DBA Power Mart)
STREET_NUMBER
14000
Direction
E
STREET_NAME
STATE ROUTE 88
City
LOCKEFORD
Zip
95237
CURRENT_STATUS
02
SITE_LOCATION
14000 E HWY 88
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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EHD - Public
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j - <br /> Groundwater Elevation Data <br /> �✓ Depth to groundwater was obtained from the existing groundwater monitor wells at the site using a <br /> water level indicator graduated to 0.01 foot. The depth to groundwater measurement was converted <br /> to a groundwater elevation for each well and used to construct a groundwater elevation contour map <br /> (Figure 2), and calculate the local groundwater flow direction and hydraulic gradient. Groundwater <br /> at the site was measured at depths between 70.11 to 85.98 feet below ground surface (bgs). The <br /> groundwater potentiometric surface elevation averaged approximately 24.17 feet bgs during this <br /> monitoring event. The groundwater elevation has decreased approximately 2.68 feet since the last <br /> sampling event in August 2001. The groundwater flow direction during this reporting period is <br /> toward the southwest with a hydraulic gradient of approximately 0.02 ft./ft. A summary of data <br /> regarding groundwater levels measured through November 28,2001 is presented in Table 1. Copies <br /> of field observations documenting work performed at the site are presented in Attachment I. <br /> Groundwater Analytical Results <br /> The distribution of groundwater sample analytical results obtained from monitor wells at the site on <br /> November 28, 2001, is presented on Figure 3 and summarized in Table 2. Due to the presence of <br /> liquid phase hydrocarbon (LPH), the highest concentration of petroleum hydrocarbons is in the <br /> vicinity of monitor well MW-1. TPHg and benzene concentrations were below method detection <br /> limits for all wells sampled during this monitoring event. MTBE was below detection limits in all <br /> wells except MW-4 at 1.0 microgram per litter (ug/L). Attachment II contains photocopies of the <br /> laboratory analytical report and the chain-of-custody form. <br /> Approximately 0.28 feet of LPH was detected in MW-I during this monitoring event. The LPH is <br /> currently being removed from MW-1 by hand bailing methods and the use of a passive, down-hole <br /> petroleum skimmer on a weekly basis. The LPH thickness has generally decreased in MW-1 since it <br /> was first observed in February 2000. A total of approximately 62 gallons of LPH has been removed <br /> from MW-1 since its detection in February 2000. <br /> Purge Water <br /> Purge water generated during groundwater purging is currently contained on-site in Department of <br /> Transportation rated 55-gallon drums and will be removed to a disposal/recycling facility during <br /> February 2002. <br /> SITE REMEDIATION <br /> Construction of a soil and groundwater remediation system was completed at the site in December <br /> 1999. The remediation system consists of seven soil vapor extraction (SVE) wells (W-1, W-3 <br /> through W-8), two groundwater monitor wells modified for SVE (MW-1 and MW-3) and four air <br /> sparge wells (AS-1 through AS-4) with catalytic oxidation treatment. A Site Plan depicting the <br /> locations of the remediation wells, subsurface piping, and remediation equipment compound is <br /> included as Figure 4. Initial start-up air discharge compliance testing was completed on December <br /> 13, 1999. The San Joaquin County Valley Air Pollution Control District(SJVAPCD)has approved <br /> an air permit for the site. During site visits, SECOR monitored system parameters and collected <br /> CATime OMLeckefordQ401 2 56COR <br /> 077.41737.003 February 11,2002 <br />
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