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1 <br /> t� <br /> Site History <br /> Jackpot Food Mart, 1434 W Yosemite Ave , Manteca, CA <br /> Time Oil Property No 04-167 <br /> indicated 0 06 ppb toluene in the sample collected from W6, however, no <br /> contaminants were detected in the remaining wells <br /> Based on the results of soil samples collected during past and recent site <br /> assessment activities, it appears that the extent of hydrocarbon-impacted soil <br /> is well defined and remains limited to the area of the pump islands SEACOR's <br /> report recommended the installation of a vapor extraction system to address the <br /> small amount of impacted soil Time Oil concurs with this recommendation <br /> Based on the results of samples collected to date, it does not appear as though <br /> groundwater beneath the site has been significantly impacted by hydrocarbons <br /> Although trace concentrations of toluene were present in a sample collected from <br /> W6, the level indicated falls far below California's primary drinking water <br /> quality standards (1,000 ppb for toluene) Accordingly, SEACOR's report did not <br /> recommend the implementation of a groundwater cleanup system Time Oil concurs <br /> with this recommendation <br /> A copy SEACOR's "Problem Assessment Report" was forwarded to the PHS/EHD and <br /> CRWQCB on June 1, 1994 In their response dated May 24, 1994, the PHS/EHD <br /> requested that quarterly groundwater monitoring be implemented until the <br /> investigation and cleanup of the site are deemed adequate In accordance with <br /> this request, groundwater sampling will be initiated during the Third Quarter of <br /> . 1993 The PHS/EHD also requested that a Final Remediation Plan/Corrective Action <br /> Plan (FRP/CAP) be submitted by September 3, 1994 <br /> Submittal of Final Remedial Plan & Quarterly Groundwater_Monitoring/Status Report <br /> Third Quarter- 1994 <br /> On September 7, 1994 three copies of SEACOR's "Final Remedial Plan and Quarterly <br /> Summary Report" was forwarded to the appropriate regulatory agencies This <br /> report presented the analytical results of groundwater samples collected from <br /> monitoring wells during the third quarter of 1994, summarized data collected to <br /> date, and presented recommendations for a cleanup system to remediate <br /> hydrocarbon-impacted soils at the above-referenced property The report and <br /> accompanying cover letter were intended to satisfy Article 5, Section 2652 of the <br /> California Underground Storage Tank Regulations requirement for quarterly status <br /> reporting, as well as the PHS/EHD's request for quarterly groundwater monitoring <br /> reporting and for the submittal of the FRP/CAP <br /> Groundwater Sampling Results - July 1994 <br /> On July 28, 1994, samples were collected from each of the groundwater monitoring <br /> wells at the subject site Prior to purging, the depth to groundwater in each <br /> well was measured by a representative of SEACOR Groundwater with a <br /> northeasterly flow was encountered at depths of 16 10 feet to 17 42 feet below <br /> ground surface After purging, each well was sampled with a new disposable <br /> bailer to prevent cross-contamination Analyses did not indicate the presence <br /> of gasoline or its constituents in samples collected from any of the groundwater <br /> monitoring wells sampled <br /> 4 <br />