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4 <br /> ' A,0/ed GAFAWALWAM <br /> stems Inc --- C <br /> A RESNA Company — --_"� <br /> z Environmental Solutions <br /> 4"' <br /> EIVEU Through Applied Science, <br /> 3164 Gold Camp Drive, suite 200 Kta; <br /> Engineering&Construct►on <br /> Rancho Cordova, CA 95670 <br /> Phone (916) 852-6690 J U N 2 2 1982 <br /> FAX (916) 852-6688 <br /> ENVIRONMENTAL HEATH <br /> PERMIT/SERVICES <br /> June 15, 1992 <br /> Mr James Escobar <br /> Department of Public Works <br /> City Hall <br /> Stockton, California 95202-1997 <br /> Subject Ground-Water Monitoring, Second Quarter 1992, at Fire Engine Company <br /> No 2, 110 West Sonora Street, Stockton, California <br /> Mr Escobar <br /> This letter report summarizes the results of the second quarter 1992 groundwater <br />. monitoring event performed by RESNA Industries (RESNA) at the request of the City of <br /> Stockton Department of Public Works (City of Stockton) at the subject site (location shown <br /> on Plate 1) Work was conducted on April 17, 1992 The work for this sampling event <br /> included measuring depths to ground water, subjectively analyzing ground water from the <br /> monitoring wells, collecting groundwater samples from the wells for laboratory analysis, and <br /> evaluating the ground-water gradient and direction of ground-water flow beneath the site <br /> BACKGROUND <br /> In April 1987, a 1,000-gallon unleaded gasoline tank was removed and residual hydrocarbons <br /> were detected in the soil remaining under the former tank The locations of the former <br /> tank and existing tanks are shown on Plate 2 The City of Stockton contracted RESNA <br /> (formerly Applied Geosystems) to conduct a subsurface investigation Our investigation to <br /> date includes drilling eight soil borings, installing four ground-water monitoring wells, <br /> collecting and analyzing soil and water samples for hydrocarbons, and evaluating changes <br /> in the ground-water elevation and inferred flow direction (Applied GeoSystems, November <br /> 20, 1990, Report No 38009-2) <br /> 3sao9-a-1800" <br />