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e 8 <br /> Sequoia $19 acra ento.Avenue, 95834 <br /> 45) Sacramento,CA 95$34 <br /> (916)921-9600 <br /> Anaiy}y cal FAX(915)92]-0100 <br /> 1g,%ffra-si www.secluo€a[abs"com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469, Stockton,CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: 5469,Stockton,CA Reported: <br /> Cameron Park CA,95682 Project Manager: Steve Carter 01/08/02 15:42 <br /> Total Purgeable Hydrocarbons and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source /RPC R1PD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2010006 -EPA 5030B (PIT <br /> Blank(2010006-BLKI) Prepared&Analyzed: 12/31/01 <br /> Purgeable Hydrocarbons ND 50 ug/l ---" <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 " <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 " <br /> Surrogate:a,a,a-Tris luorotoluene 10.7 10.0 107 60440 <br /> LCS(2010006-BSI) Prepared&Analyzed: 12/31/01 <br /> Benzene 10.2 0.50 ue 10.0 102 70-130 <br /> Toluene 10.1 0.50 10.0 101 70-130 <br /> thylbe.nzene 9.80 0.50 10.0 98.0 70-130 <br /> lenes(total) 30.1 0.50 30,0 100 70-130 <br /> Surrogate:a.a,a-Trifluorotoluene 11.1 10.0 111 60-140 <br /> Matrix Spike(2010006-MSI) Source:SI12339-05 Prepared&Analyzed: 12/31/0I <br /> Benzene 10.2 0.50 ug/l 10.0 ND 102 60-140 - <br /> Toluene 9.98 0.50 10.0 ND 99.s 60-140 <br /> Ethylbenzene 9.74 0.50 10.0 ND 97.4 60-140 <br /> Xylenes(total) 30,0 0.50 30.0 ND 100 60-140 <br /> Surrogate:a,a,a-Tris luorotoluene 10.8 10.0 108 60-140 Y '�- <br /> Matrix Spike Dup(2010006-MSD1) Source: S112339-05 Prepared&Analyzed: 12/31/01 <br /> Benzene 10.5 0.50 ug/l 10.0 ND 105 60-340 2.90 25 <br /> Toluene 10.3 0.50 10.0 ND 103 60-140 3.16 25 <br /> Ethylbenzene 10.0 0.50 10.0 ND 100 60-140 2.63 25 <br /> Xylenes(total) 30.9 0.50 30.0 ND 103 60-140 2.96 25 <br /> Surrogate:a a,a-Try7uorotoluene 10.4 1010 104 <br /> uvia 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 10 of 14 <br />