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I <br /> i <br /> i Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 ; <br /> Analytical FAX(916)921-0100 i <br /> J WWW.sequoialabs.com <br /> IT Corporation-Sacramento Project: Parkinson's ARCO,Stockton <br /> 1433 N.Market Blvd.,Ste. 1 Project Number: 880-040.IA/01050000 <br /> t Sacramento CA,95834 Reported: <br /> Project Manager: Kathleen Waldo 02/03/01 11:29 i <br /> f Total Purgeable Hydrocarbons (C6-C12) and BTEX b DHS LUFT <br /> Y - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Analyte Reporting Spike Source %REC RPD <br /> Result Limit Units Level Result OAREC Limits RPD Limit Notes <br /> Batch 1010204-EPA 5030B(PIT) <br /> Blank(1010204-BLK1) Prepared&Analyzed:01/22/01 <br /> Purgeable Hydrocarbons ND 50.0 ug/i Y <br /> Benzene ND 0.500 €o <br /> Toluene ND 0.500 " <br /> Ethylbenzene ND 0.500 " <br /> Xylenes(total) ND 0.500 " <br /> Surrogate:a,a,a-Trifluorotoluene 9.67 10.0 96.7 60-140 <br /> LCS(1010204-BSI) Prepared&Analyzed:01/22/01 <br /> Benzene 9.63 0.500 ug9i 10.0 96.3 70-130 <br /> Toluene 9.76 0.500 10.0 97.6 70-130 <br /> Ethylbenzene 9.58 0.500 " <br /> 10.0 95.8 70-130 1 <br /> lenes(total) 29.6 0.500 30.0 98.7 70-130 ! <br /> l <br /> rugate:a,a a-Tr j?uarotalvene 9.I7 I0.0 91.7 60-140 ' <br /> Matrix Spike(1010204-MSI) Source:5101311-01 Prepared&Analyzed:01/22/01 <br /> Benzene 10,1 0.500 . ug/l 10.0 ND 101 60-140 <br /> Toluene 10.2 0.500 10.0 ND IO2 60140 i <br /> f Ethylbenzene 10.2 0.500 <br /> 10.0 ND 102 60-140 <br /> Xylenes(total) 31.6 0.500 30.0 ND 105 60-140 <br /> Surrogate:a,a,a-Trifluorotoluene 9,99 10.0 99.9 60-140 <br /> I <br /> Matrix Spike Dup(1010204-MSDI) Source: 5101311-01 Prepared&Analyzed:01/22/01 <br /> Benzene 10.1 0.500 ug/l 10.0 ND 10I 60-140 0 25 <br /> Toluene 10.2 0.500 „ <br /> _ <br /> 10.0 ND 102 60140 0 25 <br /> Ethylbenzene 10.3 0.500 10.0 ND 103 60-140 0.976 25 <br /> Xylenes(total) „ <br /> 3I.8 0.500 <br /> 30.0 ND 106 60- <br /> 140 0.631 25 <br /> Surrogate:a,a,a-Tris luorotoluene 9.97 <br /> 10.0 99.7 60-140 <br /> uoia 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 /> 4 Page 6 of 9 <br />