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A46 LOCATION AND STATUS OF FORMER WATER SUPPLY WELL Record of a former water supply well located toward the northeast corner of the subject property was discovered by the SJCDPHS Unocal was requested to locate ' the well and determine its status On October 29, 1993 the top of the water supply well was discovered approximately 2 5 feet bgs at the location illustrated in Figure 3 ' The well was constructed with a 6-inch diameter steel casing and was observed by Mr Harlan Knoll of the SJCDPHS to have been satisfactorily abandoned with a icement filling of the well annulus ' 47 EXCAVATED SOIL STOCKPILES ' As a result of the demolition and escavation activities at the site, approximately 1836 cubic yards of soil were stockpiled at the site and covered with visqueen The ' stockpiled soils were segragated into separate piles based on the potential for containing either gasoline, waste oil, or hydraulic fluid The stockpiles were sampled for the parameters of concern in order to characterize them for disposal at a Class III landfill All soils were transported by Dillard Trucking, Inc (Byron, California) 1728 cubic yards of soil were disposed at the Ferns Browning Industries Vasco Road Sanitary Landfill located in Livermore, California 108 cubic yards of soil were disposed in Forward incorporated Landfill located in Manteca, California The non- hazardous waste manifests, the laboratory analytical reports, and the Chain-of- Custody documents for the stockpile soil samples are presented in the Mrttelhauser letter entitled Tank and Stockpile Soil Disposal for the subject site dated ' March 18, 1994 ' 50 INSTALLATION OF WELL MW-3A ' Well MW-3A was installed to replace well MW-3 which was abandoned prior to the ' removal and over-excavation of the gasoline USTs Details of the installation of well ittelhauser C o R P O R A f O N P216BR008 wp(03184) 7