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1 <br /> 819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> r r (916)921-9600 <br /> r� <br /> Analytical FAX(916)921-0100 <br /> i' J www.sequoialabs.com <br /> Kleinfelder-Stockton Project: Del Monte S212260 <br /> i <br /> 2825 East Myrtle Street Project Number: 12280 Reported: <br /> Stockton CA,95205 Project Manager, Joe Zilles 02/21/03 11:53 <br /> Gasoline (2-Methylpentane to 1,2,4-Trimethylbenzene) 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 /> i <br /> Batch 2120262-EPA 5030E P1T <br /> Laboratory Control Sample(2120262-M) Prepared&Analyzed: 12/16/02 <br /> -- . <br /> Benzene 1013 0.50 ug/l 10.0 103 70-130 <br /> Toluene 10.6 0.50 10,0 106 70-130 <br /> • Ethylbenzene 10.5 0.50 10.0 105 70-130 <br /> Xylenes(total) 29.2 0.50 30.0 97- 70-130 <br /> Surrogate:a,a,a-Tris luorotoluene 11.5 10.0 115 60-140 <br /> I ' <br /> Laboratory Control Sample 2120262-BS2 Prepared&Analyzed: 12/17/02 <br /> Benzene 9.86 0.50 ug/l 10.0 99 70-130 <br /> Toluene 10.1 0.50 10.0 101 70-I30 <br /> Ethylbenzene 10.1 0.50 10.0 101 70430 <br /> Xylenes(total) 28.3 0.50 30.0 94 70-130 <br /> Surrogate:a,a,a-Trifluoroioluene 11.1 10.0 111 60-140 <br /> f Laboratory Control Sample(2120262-BS4) _ - _Prepared&Analyzed_12/20/02 <br /> Benzene 9.82 0.50 ug/l 10.0 -- 98 - 70-130 <br /> Toluene 10.1 0.50 10.0 101 70-130 <br /> I Ethylbenzene 9.91 0.50 10.0 99 70-130 <br /> Xylenes(total) 28.9 0.50 30.0 96 70-130 <br /> Surrogate:ar a,a-Trifluorotoluene 11.1 10.0 I11 60-140 <br /> Laboratory Control Sample 2120262-BS5) Prepared&Analyzed: 12/19/02 <br /> Benzene 9.80 0.50 ug/l 10.0 98 70-130 <br /> Toluene 9.99 0.50 10.0 100 70-130 <br /> Ethylbenzene 9.68 0.50 10.0 99 70-130 <br /> Xylenes(total) 29.0 0.50 30.0 97 70.130 <br /> f <br /> Surrogate:a,a,a-Trfluorotoluene 10.4 1010 104 60-140 <br /> 1 Matrix Spike 2120262-MS1) _ Source:5212231-02 Prepared&Analyzed: 12/16/02 <br /> Benzene 10.1 0.50 ug/l 10.0 ND 101 60-140 <br /> Toluene 10.4 0.50 " 10.0 ND 104 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> f custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. <br /> Page 9 of 15 <br />