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1.0 INTRODUCTION <br /> -. This Workplan is required by The San Joaquin County <br /> Environmental Health Department and has been prepared by ETS <br /> ENVIRONMENTAL for Mr. Todd Perreira of the U-Haul Company, <br /> Stockton California. This report outlines the initial steps <br /> r- <br /> y proposed by ETS to determine the lateral and vertical extent of <br /> soil, and possible groundwater contamination at the site. <br /> 1.1 SITE DESCRIPTION <br /> The property is located at 2701 N. Wilson Way, Stockton <br /> California and is the site of U-Haul, an equipment rental <br /> r� <br /> i � <br /> company (Figure 1) . <br /> 1.2 REGIONAL GEOLOGY-HYDROGEOLOGY <br /> Characteristics of the aquifers, and the occurrence of <br /> groundwater at the Stockton site are typical for the San <br /> !Pf <br /> Joaquin Valley Groundwater Basin. <br /> ! The depth to first groundwater in the vicinity of the <br /> site is approximately 70 feet according to the San Joaquin County <br /> Flood Control & Water Conservation District, Spring 1990, Semi- <br /> annual Groundwater Report. Groundwater gradient information is <br /> unavailable at this time, as no wells presently exist on the site <br /> (or within 1500 feet of the site) . <br /> 1.3 PREVIOUS WORK <br /> On July 10, 1990, four underground storage tanks were removed <br /> from the site, consisting of one 10,000-gallon unleaded, one 8,000 <br /> -� gallon unleaded, one 6,000 gallon regular gasoline, and one 250 <br /> gallon waste oil (Figure 2) . A total of 7 soil samples were <br /> `-•' ETS ENVIRONMENTAL & ASSOC. <br /> PROJECT 305, PAGE 1 <br /> �J <br /> t <br /> E=9 <br />