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E�dI�iRQ ENTAL HEALTH <br /> E*f ON COMPANY, U.S.A. PF9'ra',r SERVICE <br /> P.O.BOX 4032.CONCORD,CA 94524-2032 93 JUL 23 PM 2. 09 <br /> ENVIRONMENTAL ENGINEERING <br /> MARLA D.GUENSLER <br /> SENIOR ENVIRONMENTAL ENGINEER <br /> (510)246-8776 <br /> (510)246-8798 FAX <br /> July 16, 1993 <br /> Mr.Harlin Knoll <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 445 North San Joaquin Street <br /> Stockton,CA 95201 <br /> RE: Former Exxon RAS#7-3942;4444 North Pershing Avenue, Stockton,CA <br /> Dear Mr.Knoll: <br /> This letter is written to confirm that Exxon delivered a report entitled Report of Well Installation and Quarterly <br /> Groundwater ampling for the above referenced site to your office on July 13, 1993, in the meeting held to discuss the <br /> site with the property owners. This report,prepared by EA Engineering,Science,and Technology,of Lafayette, <br /> California(EA),details the results of the installation of one down gradient monitoring well,two onsite air-sparging wells, <br /> and of the groundwater monitoring and sampling event which occurred in May 1993. <br /> Exxon has contracted with EA to complete the design,permitting,bidding, installation oversight and startup of the air- <br /> sparging/vapor extraction soil and groundwater remediation system for the site. In addition,Exxon will continue with the <br /> quarterly groundwater monitoring and sampling program,and will communicate the status of the project to your office as <br /> new developments occur. <br /> Also,a summary of the meeting held on July 13, 1993 will be forwarded to your office in the near future. <br /> If you have any questions or comments,please contact me at the above listed phone number. <br /> �Sincerely, /� <br /> VI F.J A.-a' <br /> Marla D.Guensler <br /> Senior Environmental Engineer <br /> MDG/mdg <br /> cc: Ms.Diane Filippi-SMWM <br /> Mr.Hugh Miles-EA Engineering <br /> Ms. Elizabeth Thayer-Central Valley Region CRWQCB-w/copy of EA QM Report did June 1993 <br /> a:739421tr.doc <br /> A DIVISION OF EXXON CORPORATION <br />