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LEVINE•FRICKE <br /> LF 2145 <br /> September 17 , 1990 <br /> INVESTIGATION OF NEAR SURFACE SOIL CONDITIONS <br /> IN THE VICINITY OF THE FORMER DRUM STORAGE AREA, <br /> FORMER GREATWESTERN CALIFORNIA COMPANY <br /> O <br /> This report presents the field methods and analytical results <br /> e area at <br /> of Levine in <br /> investigation of near surface soil <br /> conditions in the vicinity of the former drum stonagStockton, <br /> the former Greatur oseern of theeinvestigation ical was to determine <br /> California. Thep Pof the former drum <br /> whether shallow soil in the vicinity copper or arsenic• <br /> storage area had been affected by PP <br /> BACKGROUND operated a <br /> Great Western Chemical Company formerly owned and <br /> facility at 826 South Cente; Street in Stockton, California <br /> (Figure 1) . This facility had a storage area for Ultra Etch <br /> 20 , an alkaline etching solution used for process refinishing <br /> in the circuit board industry (Figure 2) . This solution was <br /> t the. facility in drums and remained in <br /> reportedly received a <br /> unopened containers until transported off site for recycling. �O <br /> personnel collected shallow soil samples from <br /> Levine P rade on June 14 , 1990 near the former <br /> 0.75 to 2 .5 feet below Sample locations are shown on ! <br /> Ultra Etch storage <br /> Figure 2. <br /> METHODS <br /> field analytical methods used to collect <br /> This section presents <br /> mples. This tot <br /> and analyze 13 soil slocation #6-aThelnsoile sampleswere <br /> sample collected at <br /> collected by a Levirepresentative on June 14 , 1990- <br /> Levine repr <br /> Sampling Methods. Thirteen soil samples were collected from <br /> eleven 3-inch diamesamples ter, shallow boreholes. The boreholes were <br /> drilled using hand auguring equipment. Soil brass <br /> werei <br /> collected by driving a 2-inch diameter by 6- nch long <br /> Upon collection of a sample, aluminum foil <br /> thesample container into undisturbed soil at the bottom o <br /> the borehole. UP laced over the ends of the brass <br /> lined plastic caps were p e and samples <br /> tube. The caps were then sealed with plastic tap <br /> were stored in an ice-chilled co e <br /> the duplicate sample,until the soilsubmto the <br /> sample <br /> laboratory. <br /> 1 <br />