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I <br /> 110 2nd Avenue South,#D7, Pacheco,CA 94553 <br /> McCAMPBELL ANALYTICAL INC Tele 510-798-1620 Fax 510-798-1622 <br />' Advanced GeoEnvironmental,Inc Client Protect ID West Clay Properties Date Sampled 11/19/96 <br /> 1803 West March Lane, Suite A Date Received 11/21/96 <br />' Stockton,CA 95207 Client Contact Kevin McKibben Date Extracted 11121-11/22196 <br /> Client F O Date Analyzed 11121-11/22/96 <br />' Total Recoverable Petroleum H}drocarbons as Oil&Grease(ivith 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+ % Recovery <br />' Surrogate <br /> 71481 B5-25 S ND 106 <br />' 71482 136-25 S ND 100 <br /> 71483 B6-30 S ND 103 <br />' 71484 137-10 S ND 98 <br /> 71485 137-25 S ND 105 <br />' 71486 B7-30 S ND 102 <br /> 71487 138-25 S ND 111 <br /> 71488 B8-30 S ND 103 <br /> 71489 B6/11-19-96 W ND,i 100 <br /> 71490 138/11-19-96 W ND,i 100 <br />' Reporting Limit unless other- W 10 mg/L <br /> wise stated,ND means not de- <br /> tected above the reporting limit S 10 mg/kg <br /> f *water samples are reported in mg/L and soils and sludges in mg/kg <br /> surrogate diluted out of range or not applicable to this sample <br />' + At the laboratory's discretion,one positive sample may be run by direct injection chromatogra by with FID <br /> detection The following comments pertain to this GC result a)gasoline-range compounds(C6-C12�are present, <br /> b) diesel range compounds (C10-C23) are present, c) oil-range compounds (> C18) are present a) other <br />' patterned solvent(?) e) isolated peaks f) GC compounds are absent or insignificant relative to TRPH inferring <br /> that complex biologically derived molecules (li idp?)are the source of IR absorption, h) a lighter than water <br /> immiscible sheen is present,i) liquid sample tha contains greater than— 5 vol % sediment <br /> DHS Certification No 1644 ri Edward Hamilton,Lab Director <br />