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Item #5 Tank vault backfill- <br /> The tank vault was backfilled on March 16, 1989 using <br /> crushed rock. <br /> Item #6 Monitoring well number "A" <br /> Monitoring well number "A" was installed within the <br /> original tank backfill at a total depthof less than <br /> 12 ' feet below grade surface. As was well number "B" , <br /> well "A" was installed within 2 ' to 3 ' feet of the <br /> tanks. Because of there location, wells "A" and "B" <br /> were both removed during the tank excavation. <br /> Item #7 Sampling procedures <br /> Please refer to the enclosed letter by Harding Lawson <br /> Associates dated May 23, 1991. <br /> Southland intends to once again initiate groundwater .monitor- <br /> ing at this property. Southland believes that at least four <br /> quarters of groundwater monitoring should °be !completed before <br /> recommendations for corrective action are once again submit- <br /> ted to the San Joaquin County Department of -Environmental <br /> Health Services and the Regional Water Quality Control Board. <br /> Thank you, <br /> THE SOUTHLAND CORPORATION <br /> W It ubcke <br /> nvironmental Services Coordinator <br /> WL: jb <br /> cc: Mr. Hal Miller (w/ enc.) <br /> Mr. Stephen Osborne (w/. enc. ) <br /> Mr. Jim Maughan (w/ .enc. ) CRWQCB . <br />