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JrZffMA <br /> Working To Restore Nature <br /> 3164 Gold Camp Drive,Suite 200 <br /> Rancho Cordova,CA 95670 <br /> Phone (916)852-6690 <br /> FAX (916)852-6688 <br /> July 22, 1994 <br /> Mr James Escobar <br /> Department of Public Works <br /> City Hall <br /> Stockton, California 95202-1997 <br /> Subject Status Report First Quarter 1994 <br /> Fire Engine Company No 2 <br /> 110 West Sonora Street, Stockton, California <br /> Mr. Escobar <br /> This letter report summarizes the results of the environmental investigation conducted <br /> during the first quarter 1994 by RESNA Industries Inc (RESNA) at the subject site (shown <br /> on Plate 1) The work was conducted at the request of the City of Stockton, Department <br /> of Public Works (City of Stockton) and included a performing groundwater monitoring <br /> Groundwater monitoring consists of measuring depths to groundwater, collecting <br /> groundwater samples from the wells for subjective and laboratory analyses, and evaluating <br /> the groundwater gradient and direction of groundwater 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 In April 1992, a 250-gallon <br /> waste-oil tank was removed The locations of the former and existing tanks are shown on <br /> Plate 2 In 1988, The City of Stockton contracted RESNA to conduct a subsurface <br /> investigation to assess the extent of residual hydrocarbons in soil. The investigation <br /> performed between 1988 and 1993 included drilling seventeen soil borings, installing five <br /> groundwater monitoring wells,five vapor extraction wells, one piezometer, and one recovery <br /> well, collecting and analyzing soil and groundwater samples for hydrocarbons, and <br /> performing a groundwater aquifer test and a soil vapor extraction test (Applied GeoSystems, <br /> November 20, 1990, Report 38009-2, RESNA, December 8, 1992, Report 38009-4, and <br /> RESNA, December lb, 1993, Report 38009-4) <br /> } 0422jesei38009-10 <br />