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819 Straker Avenue,Suite 8 <br /> Sacmincntn,CA 95834 <br /> 4INSequoia (9 16)921-9600 <br /> FAX(916)921-0100 <br /> *Nff Analytical www sc1„o„tlabs oor„ <br /> SPCOR International-Rancho Cordova Project ARCO 4493,Stockton,CA <br /> 3017 Kalgore Road,Suite 100 P-jCct Number 4493,Stockton,CA Reported <br /> Rancho Cordova CA,95670 Prof M-Mer Rusty Benkosky 01/16/02 13 32 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RAD Limit Now <br /> Batch 20101:87-EPA 50308 P/T <br /> Blank 2010187-BLK1 Pre ared&Analyzed 01/14/02 <br /> Purgeable Hydrocarbons ND 50 u9/1 <br /> Benzene ND 050 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 050 " <br /> Surrogate a a a-Trrfluorotoluene 946 100 94 6 60-140 <br /> LCS(2010187-BSI) Prepared&Analyzed 01/14/02 <br /> Benzene 9 53 0 50 u9/1 too 95 3 70-130 <br /> Toluene 9 51 0 50 100 95 1 70-130 <br /> Ethylbenzene 9 22 050 100 92 2 70-130 <br /> Xylenes(total) 28 1 050 300 93 7 70-130 <br /> JWrrogate aaa-Trrfluorotoluene 9 83 100 98 3 60-140 <br /> Mat" <br /> S ike 2410187-M51 Source S201082-04 Prepared&Analyzed 01/14/02 <br /> Benzene 9 19 050 u9/1 10 0 ND 91 9 60-140 <br /> Toluene 9 17 050 100 ND 917 60-140 <br /> Ethylbenzene 8 89 050 100 ND 889 60-140 <br /> Xylenes(total) 27 5 0 50 300 ND 91 7 60-140 <br /> Surrogate a a,a-Trifluorotoluene 10.3 100 103 60-140 <br /> Matrix Spike Du 2010187-MSD1 Source 5201082-04 Prepared&Analyzed 01/14/02 <br /> Benzene 103 050 u9/1 100 ND 103 60-140 11 4 25 <br /> Toluene 102 0 50 " too ND 102 60-140 10 6 25 <br /> Ethylbenzene too 050 10 0 ND 100 60-140 11 8 25 <br /> Xylenes(total) 30 1 0 50 300 ND 100 60-140 903 25 <br /> Surrogate a a a-Trifluorotoluene 9 45 10 0 945 60-140 <br /> equola Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced to its entirety <br /> Page Page 18 of 23 <br />