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404 N Wiget lane <br /> Sequoia Walnut Creek 94598 <br /> (925)98g=9p- <br /> — — - FAX(925)988-%73 <br /> � — Analytical www�uolalabs Corn <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Unocal/Circle K 4 1205 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 15-Nov-00 07 38 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT - Quality Control <br /> - - - -Sequoia Analytical - Sacramento- --- - - -- - - - <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Lint Units Level Result %REC Limits RPD Lunt Notes <br /> Batch 0110023-EPA 5030B (MeOH) <br /> Blank(0110023-13LKI) Prepared&Analyzed 02-Nov-00 <br /> 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 tent-butyl ether ND 2 50 " <br /> Surrogate 44a-Tnfluorotoluene 101 100 102 600-140 <br /> LCS(0110023-BS1) Prepared&Analyzed 02-Nov-00 <br /> Benzene 105 0 500 ug/1 10 0 105 700-130 <br /> Toluene 105 0 500 too 105 700-130 <br /> Ethylbenzene 109 0 500 100 109 700-130 <br /> Xylenes(total) 321 0 500 300 107 700-130 <br /> Methyl tert-butyl other 991 2 so " 100 99 1 700-130 <br /> Surrogate a a a-Tnfluorvtoluene 10 3 100 103 600-140 <br /> Matrix Spike(0110023-MSI) Source 5010408-03 Prepared&Analyzed 02-Nov-00 <br /> Benzene 9 82 0 500 ug/l 100 ND 982 600-140 <br /> Toluene 103 0 500 100 0 806 949 600-140 <br /> Ethylbenzene 101 0 500 10 0 ND 101 600-140 <br /> Xylenes(total) 309 0 500 300 119 990 600-140 <br /> Mathyl tart-butyl ether 119 2 50 100 ND 119 600-140 <br /> Surrogate a s a.Tnfhuorotoluene 102 100 102 600-140 <br /> Matnx Spike Dup(0110023-MSDJ) Source S010408-03 Prepared&Analyzed 02-Nov-00 <br /> Benzene 105 0 500 ug/I 100 ND 105 600-140 669 250 <br /> Toluene 110 0 500 100 0 806 102 600-140 721 250 <br /> Ethylbenzene 109 0 500 100 ND 108 600-140 670 250 <br /> Xylenes(total) 329 0 500 300 119 106 600-140 6 83 250 <br /> Methyl tort-butyl ether 125 2 50 100 ND 125 600-140 492 250 <br /> Surrogate a a a-Ti jluorotolaene 110 100 110 600-140 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed to accordance with the chain of <br /> custody document Tina analytical report must he reproduced to its en8rety� <br /> Page 10 of 11 <br />