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Sequoia 819 Straker Avenue 8 <br /> 958 <br /> Sacramento CA 9583A <br /> (916)921-9600 <br /> FAX(916)921-0100 <br /> Analytical <br /> www sequoiaiabs com <br /> Delta Environmental Consultants(Cameron Park) Project Arco 6080,Lathrop,CA <br /> 3330 Cameron Park Dr ProjectNumber N/A Reported <br /> Cameron Park CA,95682 Project Manager Jay Johnson 01/03/01 17 14 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %RFC RPD <br /> d nalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 0120178-EPA 5030B(P/T) <br /> Blank(0120178-BLKI) Prepared&Analyzed 12/15/00 <br /> Purgeable Hydrocarbons ND Soo ug/l <br /> Benzene ND 0 500 " <br /> Toluene NO 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butt'€ether ND 2 50 " <br /> Surrogate a a a-Triuorotoluene 105 �" 100 105 60-140 <br /> LCS(0120178-BSI) Prepared& 4nalyzed 12/15/00 <br /> Benzene 999 0 500 U-A 100 999 70-130 <br /> �enc 101 0 500 " 100 101 70-130 <br /> lbenzene 999 0 500 100 999 70-130 <br /> Xylenes(total) 29 8 0 500 1. 300 993 70-I30 <br /> Methyl tert-butyl ether 10 8 2 50 10 0 108 70-130 <br /> Surrogate a a a TrV7uorotoluene 103 " 100 103 60-140 <br /> Matrix Sptke(0120178-MSI) Source S012123-03 Prepared&Analyzed 12/15/00 <br /> Benzene 106 0 500 ug/I Wo ND 106 60-140 <br /> Toluene 107 0 500 10 0 NO 107 60-140 <br /> Ethylbenzene 108 0 500 100 ND 108 60-140 <br /> Xylenes(total) 321 0 500 300 ND 107 60-140 <br /> Methyl tent-butyl ether 116 2 50 100 NO 116 60-140 <br /> Surrogate a a a Trouorotoluene 105 100 105 60-140 <br /> Matrix Spike Dup(0120178-MSD1) Source 5012123-03 Prepared&Analyzed 12/15/00 _ <br /> Benzene 104 0.500 Ug/l 100 ND 104 60-140 1 90 25 <br /> Toluene 106 0 500 100 NO - 106 60-140 - 0 939 25- <br /> Ethylbenzene 105 0 500 I00 ND 105 60-140 2 82 25 <br /> Xylenes(total) 31 1 0 500 300 NO 104 60-140 3 16 25 <br /> Methyl tert-butyl ether 109 2 50 " 10 0 ND 109 60-140 622 25 <br /> Surrogate a a a-Trifluorotoluene 104 " 100 104 60-140 <br /> uola Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report niusi he reproduced to its entirety <br /> Page 5 of 8 <br />