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A%k A LTON <br /> AGEOSCIENCE <br /> THE RESULTS TEAM <br /> April 41 1991 <br /> Mr. Roy Greengrass <br /> Leprino Foods <br /> 2401 MacArthur Drive <br /> P.O. Box 1057 30-136-01 <br /> Tracy, California 95376 <br /> Subject: Request for Permission to Access Property to <br /> Construct a Ground Water Monitoring Well and <br /> Collect Ground Water Samples at <br /> Lepriono Foods <br /> 2401 MacArthur Drive <br /> Tracy, California <br /> Dear Mr. Greengrass: <br /> As previously discussed during our meeting on March 27 , 1991, <br /> an investigation has been ongoing at the former Mobil Oil <br /> Bulk Plant, located at 500 East Grantline Road to the south <br /> of the Leprino Foods Plant, Tracy, California. Mobil Oil <br /> Corporation is under the direction of the California Regional <br /> Water Quality Control Board, Central Valley Region (RWQCB) , <br /> and the San Joaquin County Environmental Health Division <br /> (SJCEHD) , to evaluate ground water quality in the area. <br /> Several monitoring wells have been installed onsite of the <br /> former Mobil Oil Bulk Plant, however, additional sampling <br /> points are required to complete the investigation. <br /> Alton Geoscience proposes to install one or two soil borings/ <br /> temporary wells or monitoring wells to collect ground water <br /> samples periodically. The monitoring wells will be <br /> installed, only if the ground water samples from the soil <br /> borings/temporary wells have detectable hydrocarbon <br /> constituents . if ground water samples have no detectable <br /> hydrocarbons, then the borings will be backfilled with neat <br /> cement to the grade. The scope of work would include the <br /> following: <br /> 1) Alton Geoscience will contact Leprino Foods to arrange <br /> a date suitable for field activities. <br /> 2 ) Every effort will be made to have as little impact on <br /> your daily operations . <br /> 3) Sampling points will be determined following proper <br /> notification of Underground Service Alert of <br /> California and meeting with the appropriate utility <br /> companies. <br /> 4 ) The site will be cleaned upon completion of work. <br /> 1000 Urnen Avenue.Suite 140 <br /> Concord.Cakfornl7 94520 <br /> (415)682-1582•FAX 1415)682.8921 <br />