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h <br /> Z' <br /> SiteHistory <br /> Jackpot Food Mart, 1434 W Yosemite Ave,Manteca, CA <br /> Time Oil Property No 04-167 <br /> A copy of SECOR's"Quarterly Monitoring Report, July- September 1995" was forwarded to the <br /> PHS/EHD and CRWQCB on December 14, 1995 <br /> Groundwater Statust Report - Fourth Quarter 1995 <br /> Groundwater Sampling Results <br /> On December 5, 1995, samples were collected from each of the groundwater monitoring wells (W-3 <br /> through M-7) at the subject site by a representative of SECOR Hydrocarbons were not detected in <br /> groundwater samples collected from any of the wells <br /> Remedial Activities <br /> Although a permit was received from the San Joaquin County Unified Air Pollution Control District for the <br /> construction of a vapor extraction system to remediate soils beneath the site, Time Oil was aware that <br /> the PHSIEHD is currently considering changes in cleanup requirements for petroleum-impacted sites <br /> which pose little or no risk to potential receptors Because groundwater at the subject site has not been <br /> impacted, and soil impacts appear to be only residual, Time contacted the PHSIEHD to discuss and re- <br /> evaluate the need for the installation of the currently proposed remediation system Based on that <br /> telephone conversation, it was Time's understanding that <br /> 1 The PHSIEHD considers the hydrocarbon impacts at the subject site to be minimal, limited to soils, <br /> and "low risk" <br /> . 2 Based on the PHS/EHD's current direction with respect to "soil only" saes, the installation of the <br /> proposed remediation system will not be required at this time <br /> 3 The PHS/EHD will not grant site closure at this time, however, they will permit Time Oil to submit a <br /> workplan for verification soil sampling which includes an evaluation of the propensity for natural <br /> attenuation of hydrocarbons beneath the site to occur <br /> 4 Because adequate groundwater data has been collected, semi-annual groundwater sampling (rather <br /> than quarterly groundwater sampling), may be conducted until closure of the site has been granted <br /> SECOR is generating a cost estimate and scope of work for verification sampling and evaluating the <br /> biodegradation of hydrocarbons in the site's soils Upon completion, the workplan will be submitted for <br /> your review and comment SECOR will conduct the next groundwater sampling event during the Second <br /> Quartet of 1996 <br /> Time Oil's Fourth Quarter 1995 status report was forwarded to the PHS/EHD and CRWQCB on February <br /> 1, 1996 <br /> • <br /> 6 <br />