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WESTERN 13861 A5 131 ANTI R 51 R1 1 1 <br /> j <br /> GEO-ENGINEERS WOO11 AND C^95776-60033� (530) 668-5300 <br /> . CALIF CON FRAC rOR#513857 1 AX (510)662_0273 <br /> RLG1S E CRLD GLOLOGISTS XvcgveA]10111Lr nom <br /> APRIL-JUNE 2000 <br /> QUARTERLY GROUNDWATER MONITORING REPORT <br /> FOR ARC PUMP & WELDING, 1211 SO. TURNPIKE RD., <br /> STOCKTON, CA <br /> A UGUST 29, 2000 <br /> PURPOSE AND SCOPE <br /> The following report documents the Second Quarter 2000 collection and certified <br /> laboratory analysis of groundwater samples from three monitoring wells located at Are <br /> 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 al ea zoned for light manufacturing and industrial use (Figure 1) Tile propel.ty is <br /> located in projected Section 14, TIN, ME, of the MDB&M at approximately 12 feet <br /> above mean sea level (Figure 2) <br /> The property previously contained one 500 gallon gasoline Underground Storage Tank <br /> (USI), 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 three monitoring wells in the course o! 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 aic derived from Recent alluvial fan and floodplain deposits The 50 feet of <br /> explored section at the site consisted of light brown silty clay with lenses of sandy clays <br /> and silts <br />