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Cecchim, Cecchim and Giovannont, Fueling Island <br /> 2 through UST-4 TPH-G and BTEX were reported as non-detect in ground water samples <br /> ecollected from monitoring wells UST-1 through UST-4 Diesel has continued to decrease <br /> systematically in ground water from UST-1 and is beginning to approach the method detection <br /> limit <br /> 4.3 Quuafity CcntroIl <br /> Quality control samples collected by ESE included a duplicate sample (from monitoring well <br /> UST-4) and a trip blank (prepared by McCampbell) The analytical results for the duplicate <br /> sample showed a 0 tozero to relative percent difference from the primary sample collected from <br /> monitoring well UST-4 No target arialytes were detected in the trip blank sample <br /> Laboratory quality control analyses included method blanks, matrix spikes and surrogate spikes <br /> These data were reviewed by ESE, which verified the following <br /> o The method blanks did not contain any of the analytes, and <br /> a The p <br /> analytical results for the matrix spike samples and matrix spike duplicate samples <br /> were within acceptable recovery ranges for BTEX (Wagner, 1992) <br /> 4.4 (Ground Water Recovery a nteih n Remediation) <br /> a <br /> As a result of the continued detectable TPH in well UST-1, interim remediation was initiated for <br /> this site in the Third Quarter of 1993 This quarter Mr Robert Cecchim performed biweekly <br /> evacuation of water from Well UST-1 for a period of three months from July through September <br /> 1995 He performed the following tasks each visit <br /> 0 <br /> Measured water and product levels in the well UST-1 using an electric water level <br /> sounder and recorded the data, <br /> Evacuated approximately 55 gallons of water from well UST-1 approximately every two <br /> weeks using an electric submersible pump The volume of water pumped from the well <br /> was recorded, and <br /> 0 The water evacuated from well UST-1 was stored in DOT rated drums in a secure area of <br /> the site When a sufficient volume of water is accumulated at the site, the well owners <br /> dispose of the purged water through a licensed recycler <br /> f 169254001gtrfy rptl3gtr95 rpt 6 Environmental Science& Engineering, Inc <br /> L_.E <br />