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w <br /> Chevron <br /> Chevron U.S.A. Inc. <br /> 2410 Camino Ramon, San Ramon, California - Phone 15101 842-9500 <br /> Mail Address:P.O.Box 5604;San Ramon,CA 94583-0004 <br /> .l <br />'k <br /> Marketing Department <br /> December 20, 1991 BE C 2 7 1991 <br /> L-N':,r(UNMENTAL HEP'T1nl <br /> PERMIT/SERVICLw) <br /> Mr. Harlin Knoll <br /> San Joaquin County Environmental Health <br /> P.O. Box.2009 <br />} Stockton, CA 95201 <br /> Re: Former Chevron Station#.9-0342 <br /> S. <br /> 'El SEl Dorado Street, Stockton, CA <br /> k. <br /> t <br /> Dear Mr. Knoll: <br /> Enclosed is a report.dated November 18, 1991 which was prepared by Chevron's consultant, <br /> Groundwater Technology(GTI), to describe groundwater monitoring which occurred on October <br /> 29, 1991 at the site referenced above. <br /> _ The gradient, to the northeast, is consistent with the previous quarter's findings. No hydrocarbons <br /> were detected in samples from wells MW-1,MW-2,and MW-4: Low levels of hydrocarbons were <br /> detected in the sample from MW 3. <br /> Chevron's contractor, Wendt Construction of Lodi; has scheduled the removal of a recently <br /> discovered 500 gallon underground storage tank for December 30, 1991. Chevron's consultant, <br /> Gettler-Ryan of Hayward, will oversee the removal of the tank and obtain at least.one sample from <br /> } <br /> the-soils beneath the tank. Gettler=Ryan will submit a report documenting the findings. <br /> If you have any questions or comments, you may contact me at(510) 842-8658. <br /> Sincerely, <br /> Clint B. Rogers <br /> Site Assessment and Remediation Engineer <br /> �I <br /> { <br /> Enclosure <br /> cc: Elizabeth Thayer, Central Valley-RWQCB, Sacramento, CA <br /> Ramon Guerrero, 1327 S. Wilson Way, Stockton, CA 95205 <br /> 9 JeffMonroe, Gettler-R <br /> � yan,Hayward, CA{w/o enclosure} <br /> �4 <br />