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c <br /> Site history <br /> Jackpot Food Mart, 1434 W Yosemite Ave.Manteca, CA <br /> Time Oil Property filo 04-167 <br /> A copy of SECOR's"Quarterly Monitoring Report, January- March 1995"was forwarded to the PHS/EHD <br /> and CRWQCB on April 19, 1995 <br /> Quarterly,Groundwater Monitoring Report - Second Quarter 1995 <br /> On May 23, 1995, samples were collected from each of the monitoring wells at the subject site Prior to <br /> purging, the depth to groundwater in each well was measured by a representative of SECOR to assist in <br /> evaluating changes in elevation, flow direction, and gradient Groundwater was encountered at 12 92 <br /> feet to 14 05 feet below ground surface <br /> Since the previous sampling event, groundwater elevation has decreased across the site by an average <br /> of 0 96 feet and flow direction has changed from northeast to north The change in flow direction is <br /> consistent with that observed in previous sampling events and is most likely a result of seasonal <br /> variation <br /> Neither gasoline nor its constituents were detected in any of the samples collected <br /> Because hydrocarbons have never been observed in groundwater at concentrations of concern and this <br /> sampling event represents the fourth consecutive quarter where hydrocarbons have not been in any of <br /> the groundwater monitoring wells, Time Oil requests that the PHS/EHD consider reducing the monitoring <br /> frequency to biannually until remediation of the site's soils has been achieved <br /> A copy of SECOR's "Quarterly Monitoring Report, April - June 1995" was forwarded to the PHS/EHD and <br /> CRWQCB on July 31, 1995 <br /> 5 <br />