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i <br /> .Chevron <br /> N Chevron U.S.A. Inc. <br /> 2410 Camino Ramon, San Ramon, Caiifornia • Phone 14151842-9500 <br /> Mail Address:P0,Box 5004,San Ramon,CA 84583-0804 <br /> Marketing Operations November 27, 1989 <br /> D. Moller <br /> Manager,Operations <br /> S. L. Patterson <br /> Area Manager,operations <br /> C. G.Trimbach <br /> Manager,Engineering <br /> Mr. Gordon Boggs <br /> Regional Water Quality Control Board <br /> 3443 Routier <br /> Sacramento, CA 95827-3098 <br /> Re: Chevron SS#96465 <br /> North Pershing and Robin Hood <br /> Stockton, CA <br /> Dear Mr. Boggs: <br /> {Enclosed we are forwarding the quarterly groundwater monitoring report dated November 14, 1989, <br /> conducted by our consultant, Weiss Associates, for the above referenced site. As indicated in the <br /> report, the significantly increased contaminant level in monitoring well MW-2 is still present. <br /> Dames and Moore have completed the proposed Work Plan for Remedial Investigation and it was <br /> submitted for review in September. As of this date we are still awaiting comment. <br /> j Chevron is highly concerned about the contamination below this site because of its sudden significant <br /> increase and the calculations performed by Dames and Moore which suggest that the contamination <br /> may be migrating at an unusually high rate. If there is anything we can do to expedite the Work Plan <br /> review process, please let us know. <br /> If you have any questions or require additional information, please call John Randall at (415) 842- <br /> 9625. <br /> Very truly yours, <br /> C. G. Trimbach <br /> i By <br /> hn Randall <br /> JMR/kom:X5-27 <br /> Enclosure <br /> cc: Diane Hinson <br /> San Joaquin Local Health Districtr" E <br /> P. O. Box 2009 E I D"" <br /> Stockton, CA 95201 <br /> Dames & Moore DE i 1:r4 <br /> Attn: Jeff Palmer ENVIRONMENTAL HEALTH <br /> 1320 E. Shaw, Ste. 110 PERMIT/SERVICES <br /> Fresno, CA 93710 <br />