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- Sacramento LA V:1834 <br /> la) <br /> Sequoia (916)921-9600 Analytical <br /> FAX(916) labsc m <br /> www sequotalabs com <br /> qw <br /> Gertler-Ryan-Rancho Cordova Project Former Unocal 2859,Stockton,CA <br /> 3140 Gold Camp Dry,Ste 174 <br /> Project Number NIA 03/21/02 <br /> Rancho Cordova CA,95670 Project Manager David Herzog Q3/2 1102 1 6 l6 <br /> Total Purgeable Hydrocarbon, BTEX and MTBE by DHS LUFT-Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2030244-EPA 5030E McOH <br /> Blank(2030244-BLKI) Prepared&Analyzed 03/18/02 <br /> Purgeable Hydrocarbons ND 5 0 - mg/kg- = y <br /> Benzene <br /> ND 0 050 " <br /> Toluene <br /> ND 0 050 " <br /> Ethylbenzene <br /> ND 0 050 " <br /> Xylenes(total) ND 0 050 " <br /> Methyl tent-butyl ether <br /> ND 0 25 " <br /> Surrogate a a a-Trifluorotoluene 0 948 " 1 00 948 60-140 <br /> UCS(2030244-BSl) Prepared&Analyzed 03/18/02 <br /> Benzene 1 01 0 050 mg/kg 1 00 101 70-130 <br /> Toluene 0 936 0 050 1 00 93 6 74-130 <br /> Ethylbenzene 0 985 0 050 1 00 98 5 70-130 <br /> Xylenes(total) 2 82 0 050 3 00 94 0 70-130 <br /> Methyl tert-butyl ether 0 989 0 25. 1 00 _ 98 9 70-130 <br /> Surrogate a a a-Trtfluorotoluene 0 903 1 00 903 60-140 <br /> LCS DU (2030244-ESDI) Prepared& Analyzed 03/18/02 <br /> Benzene 1 07 0 050 mg/kg l 00 107 70-130 5 77 25 <br /> Toluene 1 00 0 050 1 00 i40 70-130 6 61 25 <br /> &hylbenzene 1=05 0 050====L---l-00 105====70_130i6 39 25 <br /> Xylenes(total) 3 01 0 050 3 00 104 70-130 6 52 25 <br />- — 9b2---74-i30 77= <br /> Methyl ten-butyl ether --C962D 25 „��'----!'04-- <br /> Surrogate a,a,a-Trifluorotoluene-==--=-a--0 980,E--- - "_T 1 OO __ _ T� 98 0 60-140 <br /> Sequoia Analytical -Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of cusiodv document This analvitcal repot t must be reproduced to its enti0 <br /> Page Page 4 of 6 <br />