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SUN 319 <br /> McClelland engineers,inc. <br /> 2140 Eastman Avenue,Ventura,California 93003, <br /> Tel.(805)644-5535,Telex:659241 �E(; <br /> June 1, 1988 <br /> Project No. 0588-1603 <br /> Ogden Environmental Services, Inc. <br /> 10955 John Jay Hopkins Drive <br /> San Diego, CA 92121 <br /> Attention: William S. Rickman <br /> Additional Proposed Monitoring Wells <br /> Former Tillie Lewis Foods Cannery <br /> Stockton, California <br /> In response to your request of May 31, 1988, we have prepared this <br /> assessment plan to monitor the potential for on-site migration of groundwater <br /> along the northern property boundary during future remedial activities at the <br /> above-referenced location. We understand that shallow groundwater at the <br /> former Carnation facility, located north of the subject property, has been <br /> contaminated with solvents from past activities at that site. Representa- <br /> tives of the Regional Water Quality Control Board and the San Joaquin Local <br /> Health District have expressed their concern that groundwater dewatering at <br /> the former Tillie Lewis Foods cannery may alter local groundwater gradients <br /> such that contaminated groundwater from the former Carnation site may migrate <br /> onto the subject property. <br /> The site assessment report for groundwater contamination at the former <br /> Tillie Lewis Foods cannery was provided by McClelland Engineers in a report <br /> dated May 20, 1988. The final remediation plan was provided by Ogden Envi- <br /> ronmental Services in a report dated May 1988. <br /> To provide for monitoring of groundwater properties along the northern <br /> perimeter of the project site, McClelland proposes to install two additional <br /> groundwater monitoring wells. The wells will be constructed in accordance <br /> with county and state requirements for monitoring wells. Our services will <br /> include the following: <br /> 1. Drill two borings (as shown in Plate 1) to a depth of up to 20 feet <br /> below first encountered groundwater; install 2-inch-diameter PVC <br /> wells, locking covers and traffic boxes; develop each well and <br /> sample the groundwater according to EPA methodology. One ground- <br /> water sample will be collected from each well for chemical analy- <br /> sis. Soil samples will be obtained at 5-foot intervals. <br />