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Ms. Margaret Lagorio <br /> • Page 3 <br /> CONCLUSIONS <br /> The lateral and vertical limits of petroleum hydrocarbons and MTBE in MW 1 have been defined, <br /> verified, and are of limited extent. No petroleum hydrocarbons, gasoline oxygenates, EDB or 1,2 <br /> DCA are present in well MW2. <br /> Cumulative analytical data indicate that residual contaminants from the unauthorized release are <br /> naturally attenuating, and do not pose a threat to human health or the environment. <br /> RECOMMENDATIONS <br /> The next monitoring and sampling event is scheduled for June 2002. Ground Zero will provide <br /> PHS/EHD with a 48 hour notice prior to conducting any fieldwork at the site. <br /> If you have any questions or comments, please contact Ground Zero at your earliest convenience. <br /> Sincerely, <br /> Gro d alysis, Inc. <br /> • Se Garvey, �G G <br /> Staff Geologist / \���� O(0 <br /> Gregory P. Stahl, RG 5023 GRSTAHL P. <br /> CA Certified Hydrogeologist 264 No. 5023 <br /> Attachments `rl9lF OF CAOFnQ�`� <br /> PC: Mr. Patrick D. Riddle, Esq. <br /> Mr. Marty Hartzell, RWQCB Sacramento <br /> Mr. Fred D. and Mary Clark, et.al., c/o Paul Balestracci, Esq. <br /> I <br /> I <br /> i <br /> GA1Data1GROUNDZEWALLEY VIV\QMRIS QM2002.doe <br />