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' WESTERN 13861 AS 131 AM LR 'd R1 1-1 <br /> GEO-ENGINEERS �'"��utnNDcn ��s77Y�-6uo3 <br /> W (530) 668-5300 <br /> CA1,11 CONI RAC I Oft#513857 I AX (530)062-0273 <br /> R1;GIS11 RI DGLOI OG1515 w� �ru�ii�olhu um� <br /> JANUARY-MARCH 2000 <br /> QUARTERLY GROUNDWATER MONITORING REPORT <br /> FOR ARC PUMP & WELDING, 1211 SO. TURNPIKE RD., <br /> STOCKTON, CA <br /> C V FID� <br /> APRIL 14, 2000 APR 24 2000 <br /> ENVIR0NMEN_1/-%L- —HLTH <br /> PERMIT 1 SERVICES <br /> PURPOSE AND SCOPE <br /> The following report documents the First Quarter 2000 collection and certified laboratory <br /> analysis of groundwater samples from three monitoring wells located at Arc Pump and <br /> 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 1s 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 I) The property 1s <br /> located 1n projected Section 14, TIN, R6E, 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 /> 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 of investigating the <br /> soil and groundwater conditions at the site <br /> LOCAL GEOLOGY AND HYDROGEOLOGY <br /> The site 1s 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 /> explolcd section at the site consisted of light brown silty clay with lenses of sandy clays <br /> and silts <br /> I <br /> i <br />