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`..� k4 KLEINFELDER <br /> The soil samples will be assessed on site for lithology and logged. At this time we propose to <br /> analyze only the 24-inch soil samples collected from the intervals just below the leach line gravel <br /> pack. The remaining deeper soil samples will be held pending further site characterization. <br /> A total of 2 soil samples will be collected from the boring advanced near the end of the leach line <br /> prior to entering the seepage pit. The soil samples will be collected near the interface of the <br /> leach line fill and native soil (18-inches) and one additional foot below that interface (36-inches). <br /> The soil samples will be logged for lithologic classification. At this time we propose to analyze <br /> only the soil sample collected from the 24-inch interval. The remaining soil sample will be held <br /> pending further site characterization. <br /> Soil samples will be obtained by inserting stainless steel liners into the slide hammer sampling <br /> tool. The sample probe will be lowered to the desired sampling depth and driven into the soil. <br /> Soil samples will be collected by removing the stainless steel liners and sealing the ends with <br /> Teflon sheeting and tight fitting plastic caps. During the advancement of the hand auger, soil <br /> samples will be collected for lithologic classification and qualitative field screening with a <br /> photo-ionization detector (PID). The PID measures ionizable compounds in air in parts per <br /> million by volume (ppmv). Lithologic classification will be based on the Unified Soil <br /> Classification System (USCS). Soil samples collected for potential analyses will be individually <br /> labeled and placed in an iced cooler pending transport to the analytical laboratory under chain of <br /> custody protocols. Soil cuttings generated during fieldwork not be contained and left on site. <br /> The borings will be closed with EHD approval by backfilling with the excavated soil so as not to <br /> diminish the effectiveness of the leach field, versus grouting with neat cement. <br /> Laboratory Analysis <br /> At this time Kleinfelder proposes to submit for laboratory analysis a total of 8 soil samples. The <br /> soil samples will be submitted to a laboratory certified by the State of California for the proposed <br /> analyses. The 8 soil samples will be analyzed for: <br /> a Total Purgeable Petroleum Hydrocarbons as referenced to Gasoline {TPH-G} by EPA <br /> Method 8015M <br /> • Total Extractable Petroleum Hydrocarbons as referenced to Diesel {TPH-D) by EPA Method <br /> 8015M <br /> • Benzene, Toluene, Ethylbenzene, and Xylene by EPA Method 8020. <br /> • Chlorinated Hydrocarbons by EPA Method 8260B <br /> 0 Fuel Oxygenates by EPA Method 8260B <br /> • Polychlorinated biphenyls by EPA Method 8080 <br /> • Metals* by ICAP <br /> Metals analysis includes cadmium, chromium III and IV, Lead,Zinc, and Nickel <br /> ICAP-Inductively Coupled Plasma Atomic Emission Spectrometry <br /> The samples will be analyzed on an expedited 3 to 5 working day laboratory turnaround time. <br /> The soil samples will be analyzed utilizing the silica gel clean-up methodology to reduce the <br /> effects of organic material giving false positive results. <br /> 34202.E01 /ST03R1 130 Page 4 of 7 <br /> Copyright 2003,Kleinfelder,Inc. August 8,2003 <br />