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Sequoia <br /> 819 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> (916)921-9600 <br /> Analytical 1-Ax(916) 00 <br /> www sequoialabs alabs c coin <br /> Delta Environmental Consultants(Cameron Park) Project ARCO 2186, Stockton,CA <br /> 3330 Cameron Park Dr Ste 550 Project Number NIA Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 08/27/01 17 25 <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 %RF-C Limns RPD Limit Notes <br /> Batch 1080282-EPA 5030B (MeOH) <br /> Blank(1080282-BLKI) Prepared&Analyzed 08/23/01 <br /> Purgeable Hydrocarbons ND 50 mg/kg <br /> Benzene ND 0 025 " <br /> Toluene ND 0 025 " <br /> Ethylbenzene ND 0 025 " <br /> Xylenes(total) ND 0 025 " <br /> Surrogate a a a-Trac luorotoluene 0 907 100 907 60-140 <br /> LCS(1080282-BS1) Prepared&Analyzed 08/23/01 <br /> Benzene 1 10 0 025 mg/kg 1 00 110 70-130 <br /> Toluene 1 03 0 025 1 00 103 70-130 <br /> ylbenzene 1 04 0 025 1 00 104 70-130 <br /> nes(total) 302 0 025 300 IOI 70-130 <br /> Surrogate a a a-Trrfluorotoluene 0 931 100 931 60-140 <br /> Matrix Spike(1080_2_8_2_-NISI) Source 5108210-08 Prepared&Analyzed 08/23/01 <br /> Benzene 124 0 025 mg/kg 1 00 ND 124 60-140 <br /> Toluene 1 15 0 025 1 00 ND 114 60-140 <br /> Ethylbenzene 1 16 0 025 1 00 ND 116 60-140 <br /> Xylenes(total) 336 0 025 3 00 ND 112 60-140 <br /> Surrogate a a a-Triuorotoluene 0 994 1 00 994 60-140 <br /> Matrix Spike Dup(1080282-MSD1) _ Source 5108210-08 Prepared&Analyzed 08/23/01 <br /> Benzene 1 29 0 025 mg/kg 1 00 ND 129 60-140 395 25 <br /> Toluene 121 0 025 1 00 ND 120 60-140 5 08 25 <br /> Ethylbenzene 121 0 025 1 00 ND 121 60-140 4 22 25 <br /> Xylenes(total) 3 51 0 025 3 00 ND 117 60-140 437 25 <br /> Surrogate a a a-Tris luorotoluene 1 09 100 109 60-140 <br /> equola Analytical- Sacramento 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 entirety <br /> Page 9 of 1 1 <br />