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CHEVRON ENERGY TECHNOLOGY COMPANY <br /> INTEGRATED LABORATORY TECHNOLOGIES <br /> PROJECT SUMMARY <br /> Project No 2008.0021 Requested by S.Mansholt <br /> Date Initiated 3/25/08 Location CEMC <br /> Date Completed 5/30/08 6001 Bollinger Canyon <br /> CRTC Charge Code YWETS 1560243 San Ramon, CA <br /> Phone (925) 842-1804 <br /> Project Description: Analyze three soil samples from HPP facility#NWCPL-00055 located in <br /> Mountain House Development Site #6 on Byron Road, Tracy, CA. The sample is labeled SB-5 <br /> @14' bgs, SB-10 @17' bgs and SB-14 @23' bgs. Identify the hydrocarbon types present. <br /> Results: All three soil samples contain moderately weathered San Joaquin Valley Crude oil. <br /> They have lost some of the light ends, n-alkanes and mono-aromatic (BTEX) compounds with <br /> branched alkanes being prominent through water washing and biodegradation. See table below <br /> for hydrocarbon concentration and carbon number distribution. <br /> approximate approximate <br /> hydrocarbon moisture C6- C7-C10 C11-C14 C15-C28 C29+ <br /> concentration content in (area %) (area %) (area %) (area %) (area %) <br /> in soil, mg/Kg soil, % <br /> (wet weight) <br /> 08.0021-1 <br /> SB-5 510 10 0.0 9.8 20.7 56.8 12.7 <br /> @14 bgs <br /> 08.0021-2 <br /> SB-10 5,200 10 0.0 16.3 21.3 51.0 11.3 <br /> @1 Tbgs <br /> 08.0021-3 <br /> SB-14 510 10 0.0 10.3 16.8 51.7 21.2 <br /> @23 bgs <br /> Analytical Approach: The samples were extracted and analyzed by gas chromatography using <br /> a flame ionization detector to determine the hydrocarbon composition. <br /> Analyzed by: L.Nguyen <br /> Reported by: G. C. Chen GCC <br /> Reviewed by: M. E. Moir M F-777 <br /> SMansholt LHiggins MHurd <br /> AWVerstuyft MEMoir <br /> GCChen <br /> Technical files <br /> ECTfile <br />