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ss xv <br /> e <br /> f1 <br /> J. H. KLEiNFELDER&ASSOCIATES <br /> File: 24-2045-2/29:795 <br /> ( December 31, 1986 <br /> } <br /> Page 5 <br /> i <br /> 4.0 ANALYSIS FOR SOIL AND WATERSAMPLES <br /> soil and ground water sampl.s will be chemically analyzed by a <br /> state/EPA certified analytical laboratory. At this time it is anticipated <br /> that up to 52 soil samples and 3 ground water samples could be analyzed . <br /> for total petroleum hydrocarbons by GC--FID technique (EPA Method 8015, <br /> Modified). The total number of analysis will likely be less as analyses . . f <br /> will be limited to the area affected by the leak. For contingency <br /> purposes :only, this workplan has assumed a worst case conditio,l. BTX <br /> analysis by EPA Method 8020 is also proposed as these constituents were i <br /> ries of analyses. Upon their receipt, all <br /> present in the previous se '1 <br /> analytical results will be copied and transmitted to A. Teichert and Son, i <br /> Inc. for subsequent submission to the San Joaquin Local Health District. <br /> j <br /> samples collected from 10, 15, 20, and 25 feet below land surface will <br /> be ar_alyzeci for total petroleum hydrocarbons. Two samples from each <br /> boring which exhibit they highest PID readings will also be analyzed for a <br /> aromatic hydrocarbons (BTR) by <br /> EPA Method 8020. I <br /> :.nalyses for two additional samples per boring (total 6i four/boring) <br /> .i <br /> for total petroleum hydrocarbcns is proposed to allow for estimating the <br /> } <br /> total mass of hydrocarbons present within the depth intervals stated <br /> above. The mass estimate per vertical interval will provide a <br /> distribution profile by percentage of the total mass hydrocarbons present <br /> in the affected area and can eventually be used in developing a I <br /> cost-effective remedial program. <br /> analysis, permeabilities will be <br /> In addition to the chemical <br /> determined on six unaffected samples. The information will be used to <br /> assess Hydrocarbon migration potential and a preliminary.evaluation`on the <br /> feasibilityo£ applying a• soil-vapor extraction remedial system for this <br /> s <br /> site. <br /> 5.0 REPORT OF FINDINGS <br /> Upon completion of all field operations and receipt of the analytical <br /> f; results, a final report will be prepared for agency submittal. The raport ' <br /> will summarize our field investigations,` the Field and laboratory <br /> findings, and our conclusions and recommendations for further <br /> investigation if warranted. <br /> `i <br /> i <br /> . 4 <br />