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WESTERN 1386 EAST BEAN IER STREET <br /> AP-1 ZZ WOODLAND CA 95776-6003 <br /> WHE0 + GEO-ENGINEERS (530) 668-5300, <br /> CALIF CONTRACTOR#513857 FAX(530)662-0273 <br /> REGISTERED GEOLOGISTS wege@mother com <br /> OCTOBER -DECEMBER 1999 <br /> QUARTERLY GR O UND WA TER MONITORING REPORT <br /> FOR ARC PUMP & WELDING, 1211 SO. TURNPIKE RD., <br /> STOCKTON, CA <br /> FE <br /> BRUARY4, 2000 <br /> PURPOSE AND SCOPE <br /> The following report documents the Fourth Quarter 1999 collection and certified <br /> laboiatoiy analysis of groundwater samples from three monitoring; wells located at Arc <br /> Pump and Welding, 1211 So Turnpike Road, Stockton, CA <br /> SITE LOCATION AND DESCRIPTION <br /> file silt. address is 1211 So I urnpike Road, Stockton, CA The 0 33 parcel is located at <br /> the northeastern coiner of the intersection of Commerce Stieet and So Turnpike Road in <br /> an atLa zoned for light manufacturing and industrial use (Fig;uic: 1) The piopeity is <br /> 10LatLd in piojectcd Section 14, TIN, R613, of the MD13&M at appro\imatcly 12 feet <br /> above mean sea level (Figure 2) <br /> The property pievlously contained one 500 gallon gasoline Underground Storage Tank <br /> (UST), that was used to stole leaded and unleaded gasoline from the late 1950's or early <br /> 1960's through 1987 (FIgLue 3) The UST, product dispenses, and associated <br /> undeigiound piping were removed fiom the site in 1987 <br /> The piopetty owner has installed three monitoring wells In the LOE<<se of Investigating the <br /> soil and groundwater conditions at the site <br /> LOCAL GEOLOGY AND HYDROGEOLOGY <br /> The site is located on surface soils belonging; to the Stockton Adobe Clay series These <br /> soils ate derived fiom Recent alluvial fan and floodplain deposits The 50 feet of <br /> exploicd section at the site consisted of light brown silty Llay with lenses of sandy clays <br /> and silts <br /> i <br />