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819 Straker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921 9600 <br /> NW Analytical FAX(916)921 0100 <br /> www sequowlabs cam <br /> pgradient-Valley Springs Project Valley Motors S212767 <br /> 336 Augusta Court Project Number N/A Reported <br /> Valley Springs CA,95252 Project Manager Vic Cherven 01/13/03 16 40 <br /> Gasoline (2-Methylpentane to 1,2,4-Trlmethylbenzene) and BTEX by EPA 8015M and 8021B - Quality Contr <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 3010156-EPA 5030B PIT <br /> Laboratory Control Sam le(3010156-BS2) Prepared&Analyzed 01/09/03 <br /> Benzene 9 14 050 ug/l 100 91 70-130 <br /> Toluene 101 050 too 101 70-130 <br /> Ethylbenzene 102 050 10 0 <br /> ]02 70-130 <br /> Xylenes(total) 304 050 300 <br /> !01 70-130 <br /> Surrogate a a a-Trtfluorotoluene 101 100 101 60-140 <br /> i <br /> Laboratory Control Sample(3010156-BS3) Prepared&Analyzed 01/10/03 <br /> Benzene 843 050 ug/l 10 0 84 70-130 <br /> Toluene 981 050 100 <br /> 98 70-130 <br /> Ethylbenzene 102 050 100 <br /> 102 70 130 <br /> Xylenes(total) 307 050 300 <br /> 102 70-130 <br /> agate aaa-Tnfluoratolueue 9 57 10 0 96 60-140 <br /> Duplicate(3010156-DLTPI.) Source 5212782-05 Prepared 01/08/03 Analyzed 01/09/03 <br /> Purgeable Hydrocarbons ND 50 ug/l ND 200 <br /> Benzene ND 050 ND 200 <br /> Toluene ND 050 ND 200 <br /> Ethylberizene ND 050 ND 200 <br /> Xylenes(total) ND 050 ND 200 <br /> Surrogate a a a-Trifluorotoluene 964 100 96 60-140 <br /> Sequoia Analytical-Sacramento The results to this report apply to the samples analyzed tit accordance ivith the chain of <br /> custody document Unless other wise stated results are reported on a net weight busts <br /> This analytical report must be reproduced tit its entirety <br /> Page 5 of 6 <br />