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C) <br /> Ultramar <br /> Ultramar Inc. Telecopy: 209-584-6113 Credit&Wholesale <br /> P.O.Box 466 EM 209.583-3330 Administrative <br /> 525 W.Third Street209-583-3302 Information Services <br /> Hanford,CA 93232-0466 <br /> E 209-583-3358 Accounting <br /> (209)582-0241 <br /> RECEIV ' . <br /> April 16, 1991 APR 2 2 1,191 <br /> ENVIRONMENTAL HEALTH <br /> PERP IT/SERVIOE.-3 <br /> Ms. Eleanor Ratliff, REHS <br /> San Joaquin County Public Health Services <br /> P 0 Box 2009 <br /> Stockton CA 95201 <br /> SUBJECT: HYDROGEOLOGIC INVESTIGATION AT ULTRAMAR STATION NO. 696, <br /> 2448 WEST KETTLEMAN LANE, LODI, CA. <br /> Dear Ms. Ratliff: <br /> Enclosed for your review and files is a copy of our consultant's <br /> HYDROGEOLOGIC INVESTIGATION REPORT for the above-referenced Ultramar <br /> facility. As the report indicates, nondetectable to extremely low <br /> concentrations of petroleum constituent's were detected in soil samples <br /> collected from the three new soil borings drilled at the site. <br /> Additionaly, ground-water samples collected from the three new wells and <br /> MW-20 (pre-existing at the site) also show nondetectable to very low <br /> concentrations of hydrocarbon constituents. <br /> As you are aware, we are currently in the process of modifying and <br /> restarting the vapor extraction remediation project at this facility. We <br /> will also be continuing with quarterly ground-water monitoring of the four <br /> wells on the property_ with water .present. We will keep you informed of <br /> the status of this project as it progresses. <br /> Please do not hesitate to call if you have any questions regarding this <br /> information. <br /> Sincerely, <br /> ULTRAMAR INC. <br /> 4w,�t, /,� <br /> Glenn R. Dembroff <br /> Manager <br /> Marketing Environmental Department <br /> GRD/jj <br /> Enclosure: Delta Project No. 40-90-839 <br /> cc w/enc. : Mr. Tom Peltier <br /> RWQCB - Central Valley Region <br /> Sacramento CA 95827-3098 BEAC"Aw <br /> A Member of the Ultramar Group of Companies #t1 Quality and Service <br /> Wrtramatr <br />