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• m5 • <br /> HILLS BROS. <br /> COFFEE COMPANY <br /> July 22, 1991 <br /> Mr. Leon Compton <br /> City Administrator <br /> 259 N. Wilma Avenue <br /> Ripon, CA 95366 <br /> Dear Mr. Compton: <br /> We need to install, and have access to three additional groundwater monito- <br /> ring wells on the City's property in Ripon, CA. These wells are required <br /> by the Central Valley Regional Water Quality Control Board (CVRWQCB) as <br /> part of an ongoing. investigation to evaluate the extent of organic chemical <br /> migration in the aquifers in the area. <br /> Pritcher Drilling Company has been retained by Nestle Beverage to drill <br /> these monitoring wells, and they are being provided with engineering and <br /> hydrogeological expertise by the consulting 'firm of Camp Dresser and <br /> McKee. Both of these firms carry all appropriate insurance coverage for <br /> this type of work. <br /> These three monitoring wells will be located on city property on the lane <br /> divider at east end of Doak Blvd. .They will be drilled at a depth of <br /> 120 feet, 175 feet, and 220 feet. All wells will be'finished off flush with <br /> the ground. Each well will be locked to.prevent unauthorized access. <br /> Water samples collected from the well will be analyzed by EPA method with <br /> specific emphasis on the determination of concentrations on: <br /> trichloroethylene, 1,1,1-trichloroethane, trans-1,2-dichloroethylene, and <br /> vinyl chloride. In addition, water level measurement will also be taken. <br /> Copies of all well drilling/logging data and analytical results that are <br /> submitted to the CVRWQCB will also be .forwarded to_ you as you requested. <br /> - Nestle Beverage agrees to indemnify you from any loss or expense <br /> arising out of drilling, operating, and maintaining of these monitoring <br /> wells on the city's property, as contemplated by this letter. <br /> - Nestle Beverage will close wells to county ,specifications when wells are <br /> no longer needed. <br /> 230 INDUSTRIAL AVENUE RIPON, CALIFORNIA 95366 . (209) 599-4161 <br /> 65-0-91 9/9. <br />