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WESTERN 1356 FAST BFAMFR STRFFT <br /> GEO-ENGINEERS wOoul �r30 <br /> ) 6 68-5 300 X <br /> (5s-5 , <br /> CAI IF CONTRACTOR #513857 FAX(5 30)662-0273 <br /> RFGISTFRFD CTFOI OGISTS N4ccefrr <br /> AUG 2 0 Mal <br /> APRIL-JUNE 2001 <br /> QUARTERLY GROUNDWATER MONITORING REPORTF. �I� <br /> INCL UDING INS TALLA TION OF MW4 <br /> FOR ARC PUMP & WELDING, 1211 SO TURNPIKE RD , <br /> STOCKTON, CA <br /> A UGUST 16, 2001 <br /> PURPOSE AND SCOPE <br /> The following report documents the Second Quarter 2001 collection and ceitified <br /> laboratory analysis of groundwater samples from three monitor i ig wells located at Arc <br /> Pump and Welding, 1211 So Turnpike Road, Stockton, CA <br /> This i c.port also documents the installation of groundwater monitoring well MW4 at the <br /> site on June12, 2001 <br /> SITE LOCATION AND DESCRIPTION <br /> The Site addi ess is 1211 So Tumpike Road, Stockton, CA The 0 33 par cel is located at <br /> the northeastern cornea of the inter section of Commerce Sti eet and So l'ui npike Road in <br /> an ai ea zoned for light manufacturing and industrial use (Figure 1) The pi operty 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 Stoiage Tank <br /> (UST), that was used to stoic leaded and unleaded gasoline from the late 1950's of early <br /> 1960's through 1987 (Figure 3) The UST, product dispenser, and associated <br /> undeiground piping were removed from the site in 1987 <br /> The pioperty 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 ale derived from Recent alluvial fan and floodplain deposits The 80 feet of <br />