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404 N Wiget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> (925)988-9600 <br /> Analytical www <br /> 988-9673 <br /> sequoequaralabs Com <br /> ov r We"tOn-Vallelo Project San Joaqum HSA <br /> P O Box 2135 Project Number San Joaquin HSA Reported <br /> Vallejo CA,94592 Proler.t Manager Scott Lookmgbill 24-Aug-00 15 10 <br />' Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT - Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> nalvte Result Limit Units Level Result %R-EC Limits RPD Limit Notes <br /> Batch OH14003-EPA 5030B [P/TJ <br /> lank(OH14003-BLKI) Prepared&Analyzed 14-Aug-00 <br /> urgeable Hvdroi.arbons ND 50 ug/l <br /> Benzene ND 0 50 <br /> tthuene ND 0 50 <br /> vlbenzene ND 0 50 <br /> XN lenes(total) ND 050 " <br /> arrogate a a a Trovorololuene 323 300 108 70-130 <br /> CS(OH14003-BSI) Prepared&Analyzed 14-Aug-00 <br /> Benzene 19 2 050 ug/l 200 96 0 70-130 <br /> oluene 193 050 20 0 965 70-130 <br /> thylhenzene 19 5 0 50 200 975 70-130 <br /> es(total) 56 3 050 600 938 70-130 <br /> ale a a a-Tr!fluorototuene 278 300 92 7 70-130 <br /> Matrix SpikL(OH14003-MSI) Source W008163-04 Prepared&Analvzed 14-Aug-00 <br /> f <br /> nzene 18 9 050 ug/l 200 ND 945 70-130 <br /> luene 19 0 050 200 ND 95 0 70-130 <br /> Ethylbenzene 19 0 050 20 0 ND 950 70-130 <br /> Ii�lenes(total) 53 9 050 600 ND 898 70-130 <br /> urrogale a a a-Trifluorololuene 27.1 300 913 70-130 <br /> Matrix Sptkc Dup (OH14003-MSD 1) Source W008163-04 Prepared&Analyzed 14-Aug-00 <br /> enzcne 16 8 050 UO 200 ND 940 70-130 11 8 20 <br /> oluene 170 050 200 ND 850 70 130 11 1 20 <br /> Fthy[bLnzene 195 050 200 ND 975 70-130 260 20 <br /> vienes(total) 55 2 0 50 600 ND 920 70 130 238 20 <br /> arrogate a a a-1 rifluornioluene 28 2 300 940 70-13o <br /> la Analytical- Walnut Creek The rewlts nr this report apply 10 dhc %aruple%analy ed ur accordance wah tht chain of <br /> custody docuuterrt Tint wialybcal report inuu he reproduced in m ewitety <br /> Page 4 of 6 <br />