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S EcC ® R <br /> i <br /> • CONCLUSION AND RECOMMENDATIONS <br /> Based on groundwater concentration vs time graphs prodded by TRC, MTBE in the <br /> shallow zone has started to decrease or stabilize in wells MW-1, MW-3, MW-4, MW-5, <br /> MW-6, MW-8, MW-9 and MW-10 There is still a slight increase in MtBE in wells MW-2 <br /> and MW-7 SECOR completed a soil vapor extraction (SVE) pilot test and will submit <br /> results during the 3`d Quarter 2005 SECOR also recommends continued monitoring to <br /> verify contaminant concentration trends at the site <br /> RECENT SUBMITTALSICORRESPONDENCE <br /> April 14, 2005—Well Application and Permit <br /> April 21, 2005 Notification of Scheduled Environmental Activities <br /> THIS QUARTER ACTIVITIES (Second Quarter 2005) <br /> 1 TRC performed quarterly groundwater monitoring and sampling <br /> 2 Submitted quarterly site status report <br /> 3 installed soil vapor extraction wells <br /> 4 Completed pilot test for SVE <br /> NEXT QUARTER ACTIVITIES (Third Quarter 2005) <br /> • 1 TRC to perform quarterly groundwater monitoring and sampling <br /> 2 Submit quarterly site status report <br /> 3 Submit SVE pilot test report <br /> CONSULTANT SECOR International, Incorporated <br />