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�=I ENVIRONEERING, INC. <br /> Process Engineering, Water Reuse, and Accident Prevention <br /> September 5, 2000 <br /> Ms Carol Oz .- - <br /> Public Health Services <br /> San Joaquin County <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Dear Ms Oz <br /> Re California Tank Lines, Inc. <br /> We are enclosing one copy of the Quarterly Monitoring Report dated 31 August <br /> 2000, for California Tank Lines Stockton terminal at 3105 South El Dorado <br /> Street <br /> We also request approval to delete bore hole no B-7 from the work scheduled for <br /> this site on September 15, 2000, for the following reasons <br /> o Borings for MW-1 and MW-3 were both clean at 50 ft depth <br /> o MW-3 groundwater is clean as sampled on 26 July 2000 <br /> ® Groundwater flow is in a southeasterly direction Thus B-7 is not down <br /> gradient from either contamination source <br /> The driller has confirmed that MW-4 can be installed down gradient from MW-2 <br /> as desired This will require a special rig and will extend the drilling time <br /> Please let me know if you approve of the requested change as soon as possible so <br /> that I can advise the driller and geologist <br /> Sincerely, <br /> G W Roy, PE <br /> c c J Bishop <br /> - P 0 Box 2498,Danville,CA 94526 (925) 838-1763 Fax (925) 838-9621 <br />