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+ C V <br /> I <br /> INTRODUCTION <br /> I <br /> GENERAL STATEMENT <br /> This report documents the results of an additional site assessment <br /> conducted by Staal, Gardner & Dunne, Inc. (SGD) at the Color Spot, Inc. facility <br /> (site) located at 5400 East Harney Lane, Lodi, California (refer to Figure 1 <br /> Site Location Map) . <br /> PURPOSE AND SCOPE <br /> The purpose of this supplemental site assessment was to evaluate a <br /> portion of the site for the vertical and Lateral extent of soil contamination, <br /> and to determine if ground water has been contaminated by the inadvertent release <br /> of diesel fuel at the site. The scope of work was developed in conformance with <br /> State Water Resources Control Board (SWRCB) Leaking Underground Field Tank (LUFT) <br /> Field Manual guidelines and in conjunction with Ms. Darlene Reuss, of the County <br /> of San Joaquin Local Heath District (SJLHD) . The supplemental site assessment <br /> included the following tasks: <br /> • Preparation of a technical work plan to coordinate the field <br /> work with the applicable regulatory agencies including the <br /> SJLHD and the Regional Water Quality Control Board (RWQCB) <br /> Central Valley Region. <br /> I <br /> • Drilling and sampling of four soil borings to depths ranging <br /> from 30 to 90 feet below ground surface (bgs) to evaluate the <br /> vertical and lateral extent of soil contamination. Completion <br /> of. one of the soil borings to a ground water monitoring well <br /> to evaluate the presence of ground water contamination. <br /> Chemical analysis of selected soil and ground water samples <br /> for fuel fingerprint identification, total petroleum hydro- <br /> carbons (TPH) , and benzene, toluene, ethylbenzene, and total <br /> xylenes (BTEX) using EPA methods 8240, modified for diesel <br /> fuel (soil) and 524.2, modified for diesel fuel (water) . <br /> Total lead was also analyzed using EPA methods 7420 (soil) and <br /> i 7421 (water) . <br />