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CHEVRON ENERGY TECHNOLOGY COMPANY <br /> INTEGRATED LABORATORY TECHNOLOGIES <br /> PROJECT SUMMARY <br /> Project No 2008.0102 Requested by Scott Mansholt <br /> Date Initiated 11/25/08 Location CEMC <br /> Date Completed 12/02/08 P.O. Box 6012 <br /> CRTC Charge Code YWETS 1560196 San Ramon, CA 94583 <br /> Phone (925)-842-1804 <br /> Proiect Description: <br /> Analyze six soil samples from US-Can-Welty Road pipeline located at 35275 Welty Road, <br /> Vernalis, CA. The samples are labeled: SB-28-42.5', SB-29-28', SB-34-43', SB-35-41', SB-38- <br /> 43' and SB-39-38.5'. Identify the hydrocarbon types present. <br /> Results: <br /> Soil sample SB-35-41' contains very low concentration of non-specific hydrocarbon in the <br /> extract. <br /> The hydrocarbon extracted from soil sample SB-39-38.5' contains extremely weathered San <br /> Joaquin Valley crude oil. It has been weathered through water washing and biodegradation with <br /> no normal or branched paraffins. <br /> The hydrocarbon extracted from soil samples SB-28-42.5', SB-29-28', SB-34-43' and SB-39- <br /> 38.5' contain moderately weathered San Joaquin Valley crude oil. It has been weathered through <br /> water washing and biodegradation with branched paraffins being prominent. Please see the table <br /> below for carbon number distribution. <br /> approximate approximate C11- C15- <br /> hydrocarbon C6- C7-C10 C25+ <br /> content in (area (area concentration moisture (area (area C14 C (area <br /> in soil, mg/Kg soil, % %) <br /> w %) oho) oho) %) <br /> (wet eight) <br /> 2008.0102- <br /> 1 SB-28- <br /> 42.5' 6600 10 0 4.6 17.9 41 36.5 <br /> 2008.0102- <br /> 2 SB- <br /> 29.28' 20000 5 0 8.8 19.7 36.1 35.4 <br /> 2008.0102- <br /> 3 SB-34- <br /> 43' 11000 6 0 1.3 13.8 42.4 42.5 <br /> 2008.0102- <br /> 4 SB-35- <br /> 41' 1 20 0.3 97.3 ND ND ND <br /> 2008.0102- <br /> 5 SB-38- <br /> 43' 1700 10 0 2.7 17.5 43.9 35.9 <br /> 2008.0102- <br /> 6 SB-39- <br /> 38.5' 200 20 0.1 27.3 9.7 37.8 25.1 <br />