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1455 McDowell Blvd North,Ste D <br /> Sequoia Petaluma,7)79291865 <br /> Analytical FAX(707) l 42 <br /> FAX <br /> sequoialabs corn <br /> Cambria Environmental Project Equiva 5-7d <br /> 270 Perkins St Project Number 440 West Charter Way,Stockton Reported <br /> Sonoma CA,95476 Project Manager Aubrey Cool 12/12/00 07 37 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015NU8020M - Quality Control <br /> Sequoia Analytical- Petaluma <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC limits RPD Limit Notes <br /> Batch 0110282-EPA 5030,waters <br /> LCS(0110282-BS1) Prepared&Analyzed 11/10/00 <br /> Gasoline 2440 500 ug/l 2750 887 65-135 <br /> Benzene 384 0 500 320 120 65-135 <br /> Toluene 181 0 500 193 938 65-135 <br /> Ethylbenzene 462 0 500 460 too 65-135 <br /> Xylenes(total) 224 0 500 231 970 65-135 <br /> Surrogate a a a-Trifluorotoluene 355 300 118 65-13S <br /> Surrogate 4-Bromofluorobenzene 290 300 96 7 65-135 <br /> Matrix Spike(0110282-MSI) Source P011088-07 Prepared&Analyzed 11/14/00 <br /> Gasoline 2690 500 ug/l 2750 ND 978 65-135 <br /> Benzene 42 3 0 500 320 ND 132 65-135 <br /> Toluene 195 0 500 193 ND 101 65-135 <br /> lbenzene 510 0500 460 ND 111 65-135 <br /> lenes(total) 244 0 500 231 ND 106 65-135 <br /> Surrogate a a a-Tnfluorotoluene 365 300 111 65-135 <br /> Surrogate 4-Bromofluorobenzene 197 300 990 65-135 <br /> Matrix Spike Du p(0110282-MSD1) Source P011088-07 Prepared&Analyzed 11/10/00 <br /> Gasoline 2600 500 ug/I 2750 ND 94 5 65-135 340 20 <br /> Benzene 412 0 500 320 ND 129 65-135 263 20 <br /> Toluene 192 0 500 193 ND 993 65-135 155 20 <br /> Ethylbenzene 493 0 500 460 ND 107 65-135 3 39 20 <br /> Xylenes(total) 238 0 500 231 ND 103 65-135 249 20 <br /> Surrogate a a a-Trfluorotoluene 354 300 118 65-135 <br /> Surrogate 4-Bromofluorobenzene 193 340 977 65-135 <br /> equoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its enlirety <br /> Page 28 of 41 <br />