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Phase IIA Environmentai cite Assessment Page 6 <br /> Former Karlson Trucking Property <br /> Project No. 191.2 <br /> October 28, 1998 <br /> brown to grayish brown sands. No finer grained units were encountered in any <br /> of the sampling intervals. <br /> Measurable readings on the Organic Vapor Meter were recorded from samples <br /> from SB-4, SB-5 & SB-6. Readings were measured from sample SB-4 14-16' @ <br /> 141 parts per million (ppm), SB-5 14-16' @ 2.7 ppm, and SB-6 14-16' @ 54 ppm. <br /> In addition, a diesel like hydrocarbon odor was noted in samples from the 9-11' <br /> interval in SB-4 & 5 and in the 14-16' interval in SB-4, 5 & 6. No OVM readings <br /> above background were measurable in any of the remaining samples collected. <br /> Groundwater was encountered at between 9 and 11 feet in each of the Geo-Probe <br /> soil borings with the exception of SB-7 in which the groundwater surface was <br /> encountered at 11-14 feet below ground surface. <br /> 3.2 Sample Analysis <br /> Selected soil samples from the soil borings were submitted for analysis at a <br /> California State Certified Laboratory (Sherwood Laboratories in Hilmar, <br /> DHS#1400). The samples were analyized as follows: <br /> ' Soil Samples: <br /> Stockpile: Composite Samples SP-1-10 and SP-11-20 <br /> • Total Extractable Petroleum Hydrocarbons (EPA Method 3540/8015 (m)). <br /> • Total Petroleum Hydrocarbons as Gasoline (EPA Method 8015(m)). <br /> • Benzene, Toluene, Ethyl Benzene and Xylene (BTEX by EPA method 8020). <br /> • Metals (Cadmium, Chromium, Lead, Nickel and Zinc-EPA Method 6010). <br /> Stained Soil, Pole Barn: Composite Samples PB-1@2'-10@2' and PB-1@6'-10@6' <br /> • Total Extractable Petroleum Hydrocarbons (EPA Method 3540/8015 (m)). <br /> • Total Petroleum Hydrocarbons as Gasoline (EPA Method 8015(m)). <br /> • Benzene, Toluene, Ethyl Benzene and Xylene (BTEX by EPA method 8020). <br /> • Metals (Cadmium, Chromium, Lead, Nickel and Zinc-EPA Method 6010). <br /> SB-4, 5 & 6 (14'-16') <br /> • Total Extractable Petroleum Hydrocarbons as Diesel (EPA Method <br /> 3540/8015(m)). <br /> • Total Petroleum Hydrocarbons as Gasoline (EPA Method 8015(m)). <br /> • Benzene, Toluene, Ethyl Benzene and Xylene (BTEX by EPA method 8020). <br /> HB-1, (10'-10.5') <br /> • Total Extractable Petroleum Hydrocarbons (EPA Method 3540/8015 (m). <br /> 2937 Veneman Ave.,#B240 Geo-Phase Environmental Inc. Phone (209) 569-0293 <br /> Modesto, CA 95356 Fax (209) 569-0295 <br />