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WE STERN 13S6 FAS r BFAMFR STRFFT <br /> CrEO-ENGINEERS WOODLAND CA 95776-6003Y WHO - (530) 668-5300, <br /> lei CALTF CONTRACTOR#513857 FAX(530)(-)62-0273 <br /> RFCISTFRFD CrF01 OCTISTS N4e-e(a mother com <br /> OCTOBER DECEMBER 2000 <br /> QUARTERLY GRO UND WA TER MONITORING REPORT ry <br /> FOR ARC PUMP & WELDING, 1211 SO. TURNPIKE RD., <br /> STOCKTON, CA } <br /> J " <br /> a <br /> JANUARY31, 2001 <br /> PURPOSE AND SCOPE <br /> The following report documents the Fourth Quarter 2000 collection and certified <br /> laboratory 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 /> 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 manufacturing and industrial use (Figure 1) The property 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 /> (UST), that was used to store leaded and unleaded gasoline from the late 1950's or early <br /> I960's through 1987 (Figure 3) The UST, product dispenser, and associated <br /> underground piping were removed from the site in 1987 <br /> Tile property owner has installed three monitoring wells in the course 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 are derived from Recent alluvial fan and floodplain deposits The 50 feet of <br /> exploi ed section at the site consisted of light brown silty clay with lenses of sandy clays <br /> and silts <br />' 0 <br />