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Sequoia 819 Sinker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> iw Analytical (916)921-9600 <br /> FAX(916)921-0100 <br /> www sequoialabs oom <br /> SECOR International-Rancho Cordova Protect ARCO 595,Stockton,CA <br /> 3017 Kilgore Road,Suite 100 Project Number 077 43130 050 <br /> Rancho Cordova CA,95670 PiuReported <br /> j � � Rusty Benkosky 11/07/01 16 47 <br /> Total Purgeable Hydrocarbon,BTEX and MTBE by DHS LUFI'- Quality Control <br /> Sequoia Analybcal-Sacramento <br /> [An;aly7teReporting Spike Source %REC RPD <br /> Result LimitUnits Level Result '/oREC Limits RPD Limit Notes <br /> Batch I100300-EPA 5030B(PM <br /> Blank 1100300-BLK1 aced&Anal zed 10125/Ol <br /> Ptugeable Hydrocarbons ND 50 ug/l <br /> Benzene ND 0 50 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 2 5 „ <br /> Surrogate a ax-Triuorotoluene 105 100 <br /> 105 60-140 <br /> LCS 1100300-BS1 --i&Anal zed 10/25/01 <br /> Benzene 969 050 119/1 100 96 8 70-130 <br /> Toluene 929 0 50 10 0 929 70-130 <br /> Ethylbenzerte 9 11 0 50 100 91 1 70-130 <br /> ylenes(total) 27 8 0 54 300 92 7 70-130 <br /> ethyl tert-butyl ether 11 <br /> 5 2 5 10 0 115 70-130 <br /> Surrogate a a a-TriJluorotoluene 9 07 100 <br /> 90 7 60-140 <br /> Matrix S Ike 1100300-MS1) Source 5110330-08 Pre aced&Analyzed 10/25/01 <br /> Benzene 12 8 050 119/1 100 3 3 95 0 60-140 <br /> Toluene 104 050 100 093 94 7 60-140 <br /> Ethylbenzene 23 1 050 100 14 91 0 60-140 <br /> Xylenes(total) 390 050 300 12 900 60-140 <br /> Methyl tert-butyl ether 109 2 5 ^ 100 ND 109 60-140 <br /> Surrogate aa a-9Yi wrotaluene 108 " 100 108 60-140 <br /> Matrix Spike Dup q11100n30E0E-MMSDj Source 5110330-08 aced&Anal ed 10/25/01 <br /> Benzene 13 4 050 ug/l 100 3 3 101 60-I40 4 58 25 <br /> Toluene 11 1 050 10 0 0 93 102 60-140 6 51 25 <br /> Ethylbenzene 238 050 100 14 98 0 60-140 2 99 25 <br /> Xylenes(total) 406 0 50 300 12 953 60-140 4 02 25 <br /> Methyl tert-butyl ether 11 7 2 5 100 ND 117 60-140 7 08 25 <br /> Surrogate a a a-Trfuorotoluene 110 100 110 60-140 <br /> UOla Analytical-Sacramento The results to this report apply to the samples analyzed in accordance with the chain <br /> ofeustody document This analytical report must be reproduced in its entirety <br /> Page Page 10 of 12 <br />