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CHEVRON ENERGY TECHNOLOGY COMPANY <br /> INTEGRATED LABORATORY TECHNOLOGIES <br /> PROJECT SUMMARY <br /> Project No 2008.0074 Requested by S.Mansholt <br /> Date Initiated 8/20/08 Location CEMC <br /> Date Completed 10/15/08 P.O. Box 6012 <br /> CRTC Charge Code YWETS 1560196 San Ramon, CA 94583 <br /> Phone (925) 842-1804 <br /> Project Description: <br /> Analyze eight soil samples from a US Can-Welty Road pipeline located at 35275 Welty Road, <br /> Vernalis, CA. The samples are labeled SB-18 40', SB-20 28', SB-21 60.5', SB-22 53.5', SB-23 <br /> 36.5', SB-24 50', SB-25 46' and SB-26-41'. Identify the hydrocarbon types present. <br /> Results <br /> All soil samples contain moderately weathered San Joaquin Valley Crude oil. It has been <br /> weathered through water washing and biodegradation with branched alkanes being prominent. <br /> See table below for carbon number distribution. <br /> approximate approximate <br /> hydrocarbon moisture C6- C7-C10 C11-C14 C15-C25 C26+ <br /> concentration <br /> in soil, mg/Kg content in (area %) (area %) (area %) (area %) (area %) <br /> (wet weight) soil, /° <br /> 08.0074-1 11,000 10 0.0 4.6 22.2 39.1 34.1 <br /> SB-18 40' <br /> 08.0074-2 30,800 15 0.0 3.4 20.9 39.2 36.5 <br /> SB-20 28' <br /> 08.0074-3 <br /> SB-21 44,190 20 0.2 19.3 22.9 31.5 26.1 <br /> 60.5' <br /> 08.0074-4 <br /> SB-22 1,000 10 0.1 3.8 25.2 40.6 30.4 <br /> 53.5' <br /> 08.0074-5 <br /> SB-23 5,900 15 0.0 4.0 22.3 40.8 32.9 <br /> 36.5' <br /> 08.0074-6 1,200 15 0.0 6.2 25.5 39.5 28.7 <br /> SB-24 50' <br /> 08.0074-7 770 20 0.0 5.6 25.1 39.2 30.0 <br /> SB-25 46' <br /> 08.0074-8 4,800 20 0.0 3.5 21.0 42.2 33.2 <br /> SB-26 41' <br />