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E*�ON:COMPANY, U.S.A. �' � �' '� i~ l <br /> RO.BOX 4032.CONCORD,CA 94524-203232 <br /> SEP 30 rj�y E ` <br /> ENVIRONMENTAL ENGINEER <br /> MARLA D.GUENSLER a <br /> SENIOR ENVIRONMENTAL ENGINEER 4 <br /> (510)246-8776 <br /> '(510)246-8798 FAX <br /> - _ I <br />- September 26, 1993 + <br /> • I <br /> Mr.Michael!. Infurna <br /> San Joaquin County Public Health Services i <br /> Environmental Health Division <br /> P.O.-Box 2009 <br /> Stockton,CA 95201 <br /> I <br /> RE:. Exxon RAS 97-0137; 1605 S.El Dorado St., Stockton,CA I. <br /> I <br /> Dear Mr- Inf tma: i <br /> Attached for your review and comment is:a report entitled Problem Assessment Report for the above referenced site. i <br /> .'This report,:prepared by Aegis Environmental,Inc.,of Roseville,California;details the results'of�the recent soil and <br /> groundwater investigation completed at the"site. ' �} <br /> It is Exxon's.opinion that an active ground water remediation system is not necessary for the site at this time. It appears <br /> that upgradient sources may exist.which,are impacting Exxon's property. Also,EXxon-will'consider whether installation. <br /> sible'in the future. If this option is-exercised; it should have a_remedial effect on <br /> of a soil vapor extraction system is fea <br /> the volatiles in the groundwater,while remediating'a potential source area in the'soil. <br /> i <br /> Exxon will continue with the quarterly groundwater monitoring and sampling program in place at-the site. <br /> 4 <br /> Upon review, should you have ariy questions or comments,or,require additional information,please contact me at the <br /> above listed phone number. <br /> Sincerely, <br /> I <br /> Ma a D.Guensler <br /> Senior Environmental Engineer <br /> MDG/mdg <br /> attachment: Aegis QM Report dated September 9,1993 <br /> cc: w/attachment: <br /> Ms.Beth Thayer--Central Valley'RWQCB <br /> w/o attachment: <br /> Mr.Paul Graff-Aegis <br /> A DIVISION OF EXXON CORPORATION <br />