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ARCHIVED REPORTS_XR0007096
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_XR0007096
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Last modified
11/20/2024 9:21:18 AM
Creation date
9/5/2019 1:31:54 PM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
ARCHIVED REPORTS
FileName_PostFix
XR0007096
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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Site History <br /> 14000 Highway 88,Lockeford,CA <br /> Time Oil Property No.04-049 <br /> fir.► <br /> direction remained consistent with previously collected data; however, gradient decreased somewhat. <br /> The variations in groundwater elevation and gradient were most likely due to seasonal variation. <br /> Analyses identified 3,400 ppb gasoline, 200 ppb benzene, 850 ppb toluene, 120 ppb ethylbenzene, and <br /> 560 ppb xylenes in the sample collected from MW-1(located nearest to the existing pump islands). The <br /> sample collected from MW-3, located to the southeast of the former tank bed (downgradient), contained <br /> 1,800 ppb gasoline, 140 ppb benzene, 180 ppb toluene, 78 ppb ethylbenzene, and 260 ppb xylenes, and <br /> the sample collected from MW-4, located to the southwest of the former tank bed (sidegradient), <br /> contained 410 ppb gasoline, 65 ppb benzene, 3.6 ppb toluene, 28 ppb ethylbenzene, and 4.1 ppb <br /> xylenes. The sample collected from MW-2, located to the east of the former tank bed (side gradient), <br /> was not found to contain delectable concentrations of gasoline or its constituents. <br /> Based on this data, the extent of groundwater impacts had not been defined in any direction. Between <br /> the Third and Fourth Quarters of 1995, gasoline and BTEX concentrations increased slightly in MW-4; <br /> however, they decreased in MW-1 MW-2, and MW-3. The observed fluctuations in hydrocarbon <br /> concentrations were likely a result of seasonal variation in groundwater levels and/or a result of <br /> bioattenuation; however, not enough data had been collected to evaluate their significance. <br /> SECOR's "Quarterly Monitoring Report - December 1996" dated February 5, 1996 was forwarded to the <br /> appropriate regulatory agencies on February 13, 1996. <br /> Workplan for Additional Soil and Groundwater Investigation - January 1996 <br /> Based on the results of the previous investigation, a workplan was prepared for the installation of six <br /> additional groundwater monitoring wells to define the extent of soil and groundwater impacts associated <br /> with the former underground storage tanks at the subject site. On January 25, 1996, SECOR's <br /> "Quarterly Status Report and Work Plan for Additional Environmental Investigation" was forwarded to <br /> the appropriate regulatory agencies. Briefly, proposed site activities consist of the following: <br /> 1. Six borings would be advanced to approximately 100 feet below ground surface (or to 10 feet below <br /> first encountered groundwater). <br /> 2. Soil samples would be collected from each boring at 5-foot intervals and submitted for gasoline and <br /> BTEX analyses based on visual observation and field instrumentation readings. A minimum of three <br /> samples would be submitted from each boring. <br /> 3. Two-inch diameter groundwater monitoring wells would be installed in each of the borings. Each of <br /> the wells would be screened from 5 feet above to at least 10 feet below the first encountered <br /> groundwater. <br /> 4. The completed wells would be developed, surveyed, and sampled. <br /> Should the results of the additional investigation indicate that the extent of soil and groundwater <br /> contamination is been defined, a Problem Assessment Report would be generated. Otherwise, a report <br /> containing details of the additional field activities, wellconstruction details, and analytical results would <br /> be prepared. <br /> The PHS/EHD approved this workplan in correspondence dated March 6, 1996. <br /> First Quarter 1996 Groundwater Sampling Results- February 1996 <br /> On February 28, 1995, samples were collected from each of the groundwater monitoring wells (MW-1 <br /> through MW-4) at the subject site by a representative of SECOR. Prior to purging, the depth to water in <br />
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