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110 2nd Ave. South,#fMftcheco,CA 94553-5560 <br /> McCAMPBELL ANALY nCAL INC. Telephone: 925-798-1620 Fax:925-798-1622 <br /> httm//www.mccampbell.com E-mail: main@mccampbell.com <br /> QC REPORT <br /> EPA 8015m + 8020 <br /> Date: 03/15/02 Extraction: EPA 5030 Matrix: Air <br /> Concentration: ug/L %Recovery — <br /> Compound Amount RPD <br /> Sample: MS ! MSD I Spiked MS MSD <br /> SamolelD: 31502 Instrument GC-3 <br /> Surrogatel ND 99.0 100.0 ! 100.00. 99 100 1.0 <br /> Xylenes NO 29.2 30.8 30.00 97 103 5.3 <br /> j Ethylbenzene ND 9.6 10.2 10.00 96 102 6.1 <br /> Toluene ND 9.5 10.0 10.00 95 100 1 5.1 <br /> Benzene ND 9.1 9.6 10.00 91 96 5.3 <br /> MTBE ND 9.3 9.1 10.00 93 91 2.2 '! <br /> TPH(gas) j ND 85.6 ; 89.1 100.00 86 ! 89 4.0 'I <br /> (daS-SawPle) . <br /> Ye Re cavery= Amo�a�SFlked •100 <br /> (MS-ASD <br /> RPD-- 2.100 <br />