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)WESTERN 1386 EAST BEAMER STREET <br /> WOODLAND CA 95776-6003 <br /> GEO-ENGINEERS (530) 668-5300, <br /> CALIF CONTRACTOR#513857 FAX(530)662-0273 <br /> REGISTERED GEOLOGISTS wege@mother cam <br /> APRIL-JUNE, JUL Y-SEPTEMBER, OCTOBER DECEMBER 2002 <br /> QUARTERLY GROUNDWATER MONITORING REPORTS FOR <br /> ARC PUMP & WELDING, 1211 SO. TURNPIKE RD., STOCKTON' CA D <br /> nD <br /> NOVEMBER 20, 2003 D E C 12 2003 <br /> ENp�M�Tis�Hv�c s O <br /> PURPOSE AND SCOPE <br /> The following report documents the Second, Third, and Fourth Quarter 2002 collection <br /> and certified laboratory analyses of groundwater samples from four monitoring wells <br /> located at former Arc Pump and Welding, 1211 So Turnpike Road, Stockton, CA <br /> SITE LOCATION AND DESCRIPTION <br /> The site address is 1211 So Turnpike Road, Stockton, CA The 0.33 parcel is located at <br /> the northeastern corner of the intersection of Commerce Street and So Turnpike Road in <br /> an area zoned for light 14 manufacturing NR6E, of theand ial use MDB M(Figure pproximately property eet <br /> is <br /> located In projected Section <br /> above mean sea level(Figure 2) <br /> The property previously contained one 500 gallon gasoline Underground Storage Tank <br /> (UST), that was used to store leaded and unleaded gasoline from the late 1950's or early <br /> 1960's through 1987 (Figure 3) The UST, product dispenser, and associated <br /> underground piping were removed from the site in 1987 <br /> The property owner has installed four groundwater monitoring wells In the course of <br /> investigating the 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 are derived from Recent alluvial fan <br /> clayandsiltowh 2-4 foot thlcklam deposits. hla yersfof Fine <br /> 0 feet of <br /> explored section at the site consisted of stiff <br /> to medium sand at approximately 20, 55, 60, and 78 feet bgs <br /> 0 <br /> Are Ptirnn OM 4-12 2002 <br />