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W ONCOMPANY, U.S.A. <br /> POST OFFICE .BOX 4032 . CONCORD, CA 94524-2032R E C ' ] <br /> ENVIRONMENTAL ENGINEERING <br /> UN 1992 <br /> MARLA D. GUENSLER J <br /> ENVIRONMENTAL ENGINEER. ENVIRONMEN`),�L HEALTH <br /> (51D) 246-8776 PERFiITfSSE_Rk,i'CES <br /> May 29, 1992 <br /> Exxon RAS #7-0137 <br /> 1605 South E1 Dorado <br /> Stockton, CA 95206 <br /> Mr: Mike Infurna <br /> San Joaquin County Public' Health Services <br /> Environmental Health Division <br /> Post Office Box 2009 <br /> Stockton, California 95201 <br /> Dear'Mr. , Infurna: <br /> This letter is written . as a recommendation to, alter the analysis which is <br /> presently a part of the quarterly ground water monitoring program for the <br /> above referenced site. <br /> Ethylene dibromide, EDB., is' one of the constituents which is currently <br /> included7. i.n the quarterly analysis. However, the results for EDB have been <br /> below the. detection limit of 0.5 -parts per '`billion 'since monitoring began in <br /> July of 1991 . <br /> There has been no indication from the .previous analyses that show testing <br /> for EDB 's-hould be a •necesi'ity in the future. Therefore,- Exxon recommends <br />�., discontinuing this portion of the analysis for quarterly samples. <br /> t <br />�. Should you .have any,,,questions or comments with ..regard to this, please do not <br /> :hesitate to contact, a at the above listed number. <br /> Sincerely, <br /> c - Mr. G. DeMarzo ; <br /> Ms.. Jacqueline Doub — Aegis Environmental , Inc. — Roseville, CA <br /> MDG:sd <br /> 2399E/70137LTR.3 <br /> i <br /> k <br /> A 01VISION OF EXXON CORPORATION <br />