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0 <br />110 2nd Avenue South, 4D7, Pacheco, CA 94553-5560 <br />McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />64ht -//www mccampbell com E-mail main@mccampbell corn <br />Date 05/29/02 <br />QC REPORT <br />EPA 8015m + 8020 <br />Extraction EPA 5030 <br />Matrix Water <br />Sampled] 52902 Instrument GC -7 <br />MTBE <br />Concentration ug/L <br />%Recovery <br />98 <br />Compound <br />RPD <br />98 <br />Amount <br />TPH (9a$) <br />ND <br />Sample MS MSD <br />Spiked <br />MS MSD <br />99 <br />Sampled] 52902 Instrument GC -7 <br />MTBE <br />NO <br />100 <br />98 <br />1000 <br />100 <br />98 <br />2 0 <br />TPH (9a$) <br />ND <br />989 <br />990 <br />10000 <br />99 <br />99 <br />01 <br />Surrogatel <br />NO <br />106 0 <br />1070 <br />10000 <br />106 <br />107 <br />09 <br />Xylenes <br />ND <br />325 <br />320 <br />3000 <br />108 <br />107 <br />16 <br />Ethyfbenzene <br />NO <br />100 <br />105 <br />1000 <br />100 <br />105 <br />49 <br />Toluene <br />NO <br />100 <br />10 6 <br />10 00 <br />100 <br />106 <br />5 8 <br />Benzene <br />ND <br />9 8 <br />100 11 <br />10 00 <br />98 <br />100 <br />20 <br />(NLS—Smnple) <br />% Re cov <br />100 <br />AmormtSprked <br />( M$—A&D) <br />RPD— 2100 <br />RPD means Relative Percent Deviation <br />