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i <br /> 819 Striker Ave Ste 8 <br /> oSequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www.sequoialabs.com <br /> Kleinfelder-Stockton Project: Del Monte 5409291 <br /> 2825 East Myrtle Street Project Humber: 12280 Reported: <br /> Stockton CA,95205 Project Manager: Joe Zilles 09/29/04 19:07 <br /> Purgeable Hydrocarbons and BTEX by EPA 8015B/8021B -Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPI) Limit Notes <br /> Batch 4090249-EPA 50308(PIT) - <br /> Blank(4090249-BLK1) Prepared&Analyzed:09/15/04 <br /> Gasoline Range Organics(C4-C12) ND 50 ugll <br /> Benzene ND 0.50 <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 <br /> 1 Surrogate:4-BFB(FID) 9.07 10.0 91 60-140 <br /> Surrogate:a,a,a-TFT(PID) 8.54 10.0 85 60-140 <br /> Blank(4090249-BLK2) _ Prepared&Analyzed:09/16/04 <br /> Gasoline Range Organics(C4-C 12) ND 50 ug/l <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> ` thylbenzene ND 0.50 " <br /> I Xylenes(total) ND 0.50 " <br /> Surrogate:4-BFB(FID) 8.65 " 10.0 86 60-140 <br /> Surrogate:a,a,a-TFT(PID) 8.73 1010 87 60-140 <br /> !. . Laboratory Control Sample(4090249-BS1) Prepared&Analyzed:09/15/04 <br /> Benzene 9.80 0.50 ug/1 10.0 98 70-130 <br /> Toluene 9.91 0.50 10.0 99 70-130 <br /> Ethylbenzene 9.54 0.50 10.0 95 70.130 <br /> Xylenes(total) 28.6 0.50 30.0 95 70-130 <br /> Surrogate:4-BFB(FID) 7.45 10.0 74 60-140 <br /> Surrogate:a,a,a-TFT(PID) 10.3 10.0 103 60-140 <br /> Laboratory Control Sample(4090249-BS2) Prepared&AnaIyzed:09/16/04 _ <br /> Benzene 11.0 0.50 ug/l 10.0 110 70-130 <br /> I Toluene 11.0 0.50 10.0 110 70-130 <br /> Ethylbenzene 10.7 0.50 10.0 107 70-130 <br /> Xylenes(total) 32.1 0.50 30.0 107 70-130 <br /> { Surrogate:4-BFB(FID) 8.14 " 10.0 81 60-140 <br /> (l Surrogate:a,ara-TFT(PID) 11.3 10.0 113 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> 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 7 of 11 <br />