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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> FAX(916) 00Analyt Cal www sequoialabs corn. <br /> i <br /> ' ATC Associates Inc -Modesto Project Westrec Properties/KIR <br /> 1 l 17 Lone Palm Ave, Ste B Project Number 54 62514 0001 Reported <br /> 1 Modesto CA, 95351 Project Manager Jeanne Homsey 04/21/01 It 50 Total Pur eable Hydrocarbons (C6-C12), BTEX and MTBE DHS LUFT - <br /> 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 1040152-EPA 5030B (P/T) <br /> Blank(1040152-BLKI) Prepared&Analyzed 04/11/01 <br /> 1 Purgeable Hydrocarbons ND 500 ug/1 <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 " <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 250 <br /> Surrogate a a a-Triuorotoluene 11 7 100 117 60-140 <br /> LCS(1040152-BSI) Prepared&Analyzed 04/11/01 <br /> Benzene 112 0 500 ug/1 100 112 70-130 <br /> Toluene 115 0 500 100 115 70-130 <br /> lbenzene 11 7 0 500 10 0 117 70-130 <br /> eves(total) 34 5 0 500 300 115 70-130 <br /> Methyl Cert-butyl ether 12 0 250 i0 0 120 70-130 <br /> Surrogate a a a-Triuorotoluene 112 1190 112 60-140 <br /> Matrix Spike(1040152-MSI) Source 5104123-01 Prepared&Analyzed 04/11/01 <br /> Benzene 109 0 500 ug/l 10 0 ND 109 60-140 <br />' Toluene 1 1 0 0 500 100 ND 110 60-140 <br /> Ethylbenzene 112 0 500 100 ND 112 60-140 <br /> Xylenes(total) 333 0 500 30 0 ND 1 I 1 60-140 <br /> Methyl tent-butyl ether 13 2 2 50 100 ND 132 60-140 <br /> Surrogate a a a-Trfluorotoluene 106 10 0 106 60-140 <br /> Matrix Spike Dup(1040152-MSDI) Source 5104123-01 Prepared&Analyzed 04/11/01 <br />' <br /> Benzene 11 4 0 500 ug/l l0 0 ND 114 60-140 <br /> 448 25 <br /> Toluene 114 0 500 l0 0 ND 114 60-140 3 57 25 <br /> Ethylbenzene 11 6 0 500 10 0 ND 116 60-140 3 51 25 <br />' Xylenes(total) 346 0 500 „ 300 ND 1 l-) 60-140 3 83 25 <br /> Methyl tert-butyl ether 13 9 2 50 100 ND 139 60-140 5 17 25 <br /> Surrogate a a a-Triuorotoluene 112 100 112 60-140 <br /> luola 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 7 of 14 <br />