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FIE]WIGRoUNDWATER <br /> LIED TECHNOLOGY INC. <br /> � 4057 Port Chicago Highway,Concord,CA 94520(415)671-2387 <br /> FAX:(415)685-9148 <br /> I <br /> February 12, 1992 <br /> i <br /> Project No. 020502364 <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton., CA 95201 <br /> I <br /> Subject: Work plan for application for permits .to install groundwater monitoring wells at a site <br /> located within the Arch Road Business Park, Stockton, California. <br /> Dear San Joaquin County Public Health Services: <br /> This letter describes the scope of work, as required.for„application for permits, for drillihdthree soil <br /> borings that may be converted to groundwater monitoring wells. The subject property is located in the <br /> Arch Road"Business Park in Stockton, California. The site consists of four undeveloped parcels <br /> (Assessor's Parcel Numbers 179-26009, 179-260=10; 179-260-16, and 179-260-17) at 3738 and 3840 <br /> Metro Drive, and 3737`and 3839 Arch Road (Attachment A). This work is part of a Property <br /> Acquisition/Transfer Assessment for Anheuser-Busch Companies. <br /> Three soil borings will be drilled using hollow-stem auger drilling techniques. The maximum depth of the <br /> borings will be 30 feet unless groundwater is encountered. If groundwater is encountered before 30 feet; j <br /> then the borings will be advanced to 10 feet below initial water levels and groundwater monitoring wells <br /> will be installed in the boreholes. Drilling will be supervised by a Groundwater Technology geologist <br /> who will maintain a log of the materials encountered according to the Unified Soil Classification System. <br /> Soil samples will be field screened using a photo-ionization detector (PID) or flame ionization detector <br /> (FID). Based on field screening (i.e., the samples with the highest PID/FID readings); one soil sample <br /> per borehole will be collected for laboratory analyses. During drilling, soil samples will be field screened <br /> at approximately 5-foot intervals or at changes in lithology. Selected soil samples will be collected in <br /> brass tubes and sealed with aluminum foil, plastic caps and duct tape. Soil samples will then:be labeled <br /> and placed on ice in an insulated cooler for transport to a California-certified laboratory. The samples <br /> will be analyzed for Appendix IX (40 CFR 264) constituents (Attachment 6). <br /> FEB 12 1992 <br /> i pERM17ISERVICEES TM <br /> Offices throughout the U.S.,Canada and Overseas <br />