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' 110 2nd Ave South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> hM2//www mccamobell com E-mail matn@mccampbell com <br /> I <br /> • QC REPORT <br />' EPA 8015m + 8020 <br /> Date 02/19/02 Extraction EPA 5030 Matrix Air <br /> Concentration ug/l_ °Recovery <br /> Compound Amount RPD <br />' Sample MS MSD Spiked MS MSD <br /> Samplell] 21102 Instrument GC-12 <br /> Surrogates NO 1000 990 __1_0_0_0_0T100 99 10 <br />' Xylenes NO 319 312 3000 106 104 22 <br /> Ethylbenzene NO 108 103 1000 108 103 47 <br /> IToluene NO 106 100 10 00 106 100 58 <br /> Benzene NO 103 9 9 1000 103 99 4 0 <br /> MTBE NO 98 94 10 00 98 94 42 <br /> TPH (gas) NO 968 951 100 00 97 95 111 8 <br /> lie <br /> I (MS—Saunplej <br /> %Re covay= AnmunlSpiked k0U <br /> I 210 <br /> (MS+A&D) <br /> RPD means Relative Percent Deviatton <br />