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Mr Jeff Wong <br /> October 12, 2001 <br /> • Page 4 of 4 <br /> following recommendations <br /> • Destroy the existing water supply well as soon as possible after the installation and testing of the <br /> new water supply well (in progress) in order to eliminate it as a potential vertical migration <br /> pathway to underlying aquifers <br /> • Install additional groundwater monitoring wells to further define the lateral extent of dissolved <br /> MTBE contamination north and northeast of well MW6 <br /> • Closely monitor contaminant concentrations in well MW7 to evaluate potential plume migration <br /> eastward and to evaluate the need for additional groundwater monitoring wells in that direction <br /> Please contact Ground Zero at (209) 838-9888 if you have any questions or require additional <br /> information <br /> Respectfully, <br /> Ground Zero Analysis, Inc <br /> Sean Garvey <br /> . Staff Geologist �ER�� �Ep�o <br /> mak' JOH; 4 P <br /> LAI NE <br /> John P Lane N No 6795 <br /> CA Registered Geologist No 6795 "y�, <br /> Q-.F A� <br /> Attachments <br /> C `rte' <br /> cc Mr Ray Baglietto/Mr Frank Rauzi <br /> Mr Marty Hartzell, CA RWQCB <br /> G IData1GROUNDZE\TLT.EBURGIReporls\QMR13QM2001 doc <br />