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LPRETANK CLOSURE SUE ASSESSMENT <br /> 3725 Tracy Boulevard, Tracy, CA <br /> Delta Project No. 40-89-012 <br /> Page B <br /> 3.3 Chemical Analysis <br /> r Based on results of soil samples screening, soil samples will be selected for chemical <br /> Lanalysis. Soil samples will be analyzed for TPH by EPA Method 8015. Those samples with <br /> TPH concentrations exceeding 100 ppm will be analyzed for BTEX by EPA Method 8020. <br /> 4.0 SCHEDULE <br /> Delta will proceed with the work outlined in this work plan as soon as approval is <br /> obtained. A drill crew will be mobilized to drill the proposed borings within 2 weeks <br /> of approval of this plan. Laboratory analysis of soil samples generally requires 3 <br /> weeks. A summary report of our results will be prepared within 3 weeks after laboratory <br /> i� results are received. <br /> 5.0 REMARKS]-SIGNATURES <br /> The recommendations contained in this report represent our professional opinions, and <br /> are based in part on information supplied by the client. These opinions are based on <br /> currently available information and are arrived at in accordance with currently <br /> accepted hydrogeologic and engineering practices at this time and location. Other than <br /> this, no warranty is implied or intended. <br /> DELTA ENVIRONMENTAL CONSULTANTS, INC. <br /> ort was prepared b Date(Le— <br /> This re <br /> P P P Y <br /> Tod D. Christenson <br /> Vice President <br /> West Coast Region <br /> el)� <br /> This report was reviewed by: Date z� <br /> Clarke H. Owen <br /> Senior Engineering Geologist <br /> Project Manager �R�❑ GF <br /> �1 0,KRO� �� <br /> The work performed in this X �R¢ <br /> L report was done under the <br /> supervision of a California <br /> Registered Geologist .1_ — l� <br /> rian L. Krogseng' 1V0' <br /> L California Registered Ind. <br /> Geologist #2303 <br /> of <br /> �, CA <br />