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• /u! 819 Striker Avenue Suite 8 <br /> / L 1 <br /> Sequoia Sacramento,)9 99600 <br /> q (9l6)911-9600 <br /> Analytical Fax equot labs2 1 co 0 <br /> www sequoialabs corn <br /> 4k!:W-- <br /> SECOR International-Rancho Cordova Project ARCO 434,Lodi,CA <br /> Project Number N/A Reported <br /> 3017 Kilgore Road,Suite 100 <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 10/01/01 14 56 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT-Quality Control <br /> Sequoia Analytical-Sacramento <br /> Reporting Spike Source %REC Analyte Result Limit Units Level Result %REC Limits :I=R- <br /> Notes <br /> Batch 1090246-EPA 5030B(PIT) <br /> Blank(1090246-BLKI) Prepared&Anal d 09/21/01 <br /> Purgeable Hydrocarbons ND SO ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 0 50 " <br /> Surrogate a a a-Trifluorotoluene 113 100 113 60-140 <br /> LCS(1090246-BSI) Prepared&Analyzed 09/21/01 <br /> Benzene 104 0 50 ug/l 100 104 70-130 <br /> Toluene l0 1 0 50 too 101 70-130 <br /> Ethylbenzene 101 050 too 101 70-130 <br /> Xylenes(total) 30 1 050 300 100 70-130 <br /> T rrogate a a a-Trifluorotoluene 116 100 116 60-140 <br /> Matrix Spike(1090246-MS1) Source S109260-08 Prepared&Analyzed 09/21/01 <br /> Benzene 9 91 050 ug/l 100 ND 99 1 60-140 <br /> Toluene 9 50 050 100 ND 950 60-140 <br /> Ethylbenzene 933 050 too ND 933 60-140 <br /> Xylenes(total) 275 0 50 300 ND 91 7 60-140 <br /> Surrogate aaa-Trifluorotoluene 102 100 102 60-140 <br /> Matrix Spike Du (1090246-MSD1) Source S109260-_08 Prepared&Analyzed 09/21/01 <br /> Benzene 102 0 50 ug/l 100 ND 102 60-140 2 88 25 <br /> Toluene 986 050 100 ND 986 60-140 3 72 25 <br /> Ethylbenzene 979 050 100 ND 979 60-140 481 25 <br /> Xylenes(total) 288 050 " 300 ND 960 60-140 4 62 25 <br /> Surrogate a a a-Trtfluorotoluene 998 100 998 60-140 <br /> uota Analytical-Sacramento The results to 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 10 of 12 <br />