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t Valley Motors Page 2 <br /> 800 East Main Street March 9, 2009 <br /> Stockton, CA 95202 <br /> The EHD is concerned that by not collecting and analyzing ground water samples, potentially <br /> significant changes in the contaminated plume's concentrations or movement will go unnoticed. <br /> In order to adequately manage and monitor,;the dissolved petroleum plume, the EHD directs you <br /> to sample monitoring wells VM-2, VM-4, and VM-6 on a semi-annual schedule (March and <br /> September, starting September 2009) for TPHg and BTEX. The remainder of the wells on site <br /> may be sampled annually, every March. These reports are to be complete and follow the Tri- <br /> Regional Guidelines' Appendix - A format for minimum inclusions. These reports are to include <br /> professional conclusions and recommendations and a time schedule for future activities. All <br /> reports (semi-annual, quarterly, or annual) are due on Geotracker by the 151h of the month <br /> following the quarter's end. <br /> Please contact Michael I ma t (209)468-3454 if you have any questions. <br /> ?nderson�/.�/ G�- <br /> Michael J. Infurna Jr., REHS Nuel H Jr., PG <br /> Senior Registered Environmental Health Specialist Engineering Geologist <br /> Mi/nh <br /> cc: Mr. James L. Barton, CVRWQCB - 11020 Sun Center Dr., #200 Rancho Cordova, CA., <br /> 95670-6114 <br /> Mr. Victor Cherven, Upgradient Consulting, HC61 Box 1900, Bonners Ferry, ID 83805 <br /> Mr. Clyde Hebbron, Upgradient Consulting, 3369 Kimberly Rd., Cameron Park, CA 95682 <br /> Mr. Thomas O'Neill, 800 E. Main Street/ PO Box 923, Stockton, CA 95201 <br />