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110 2nd Avenue South,#D7,Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC. Tele:510-798-1620 Fax:510-798-1622 <br /> Geological Audit Services Client Project ID:McDonald Island Date Sampled:06/03/94 <br /> 1803 West March Lane,Ste.A Date Received:06/07/94 <br /> Stockton,CA 95207 Client Contact:Tom Shepherd/Kevin McKibben Date Extracted:06/13/94 <br /> Client P.O: Date Analyzed:06/13/94 <br /> Total Recoverable Petroleum Hydrocarbons as Oil&Grease(with Silica Gel Clean-up) by Scanning IR Spec- <br /> trometry* <br /> EPA method 418.1 or 9073;Standard Methods 5520 C&F <br /> Lab ID Client ID Matrix TRPH+ <br /> 35911 Comp N-1 to 4 S ND <br /> Detection Limit unless other- W 5 mg/L <br /> wise stated;ND means Not <br /> Detected S 50 mg/kg <br /> *water samples are reported in mg/L and soils in mg/kg <br /> + If TPH(d) is not requested then all positive results are run by direct injection chromato aphy with FID <br /> detection.The following commentspertain to these GC results:a)gasoline-range compounds 6-C 12)present- <br /> b) diesel range compounds C10-C23) present; c) oil-range compounds (> g18) resent; d) other patterned <br /> solvent(?)e)isolated peaks-f)GC compounds are absent or insignificant relaTRPtive to H inferringthai complex <br /> biologically derived molecules(lipids?)are the source of IR absorption. <br /> DHS Certification No. 1644 Edward Hamilton,Lab Director <br />