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ait?�1 5 <br /> 7-Eleven/Stockton <br /> I October 1988 <br /> r•� <br /> Monitored and maintained the groundwater remedia- <br /> tion and soil-vent systems including sampling and <br /> analysis of the groundwater treatment system <br /> influent and effluent. <br /> mm Prepared this report with recommendations for <br /> continued remediation of the site. <br /> GROUNDWATER MONITORING <br /> two weeks to <br /> ME <br /> Groundwater monitoring was per every <br /> determine the depth-to-liquid interface and thickness of free <br /> product, if present. Groundwater monitoring was o(SOP)e8 in <br /> p opera <br /> Procedure <br /> accordance with GTI's Standard Op <br /> The monitoring data for the months of April <br /> (App <br /> endix II) . of Appendix I. <br /> through September, 1988 are presented in Table 1 <br /> 7 and 8) , were <br /> "! Groundwater Gradient Maps+ (Figures 3+ A+ 5, 5, this reporting <br /> constructed using data from selected dates during <br /> � - <br /> 4y* period. <br /> gradual lowering of the <br /> The monitoring data document a gorting period, except for <br /> groundwater table throughout thistr23, 1988 when the groundwater <br /> the monitoring performed on Aug <br /> elevation was approximately 0.5-feet higher than the previous <br /> 1988. overall, the water table <br /> non event on August 11, 1988, <br /> fell approximately <br /> 5 feet between <br /> April 6 and September 21, <br /> ea <br /> from an approximate elevation of 27-feet below 2xan1988,1thel <br /> f Through September , <br /> (MSL) to 32-feet below MSL. approximately 16- <br /> elevation of the groundwater table has fallen app <br /> feet below the elevation it was encountered at when the project <br /> began in May, <br /> 1986. <br /> GHOL�SDWATER <br /> „_;I ..J TCCIINOId0GV I,"C. <br />