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1 Industrial <br /> SequoiaSan Carlos CA 94070-41 11 <br /> (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> lame Tech Services Project Chevron(3) Sampled 8/26/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-6171/990826-K1 Received 8/27/99 <br /> San Jose,CA 95112 Project Manager Christine Lillie Reported 9/10/99 <br /> Total Purgeable Hydrocarbons,(C6-C12),BTEX•and MTBE by DHS,LUFT/Quality Control - <br /> Sequoia Analy ical-San Carlos _ <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits IN, Limit % Notes" <br /> _Matrix Spike Dup(continued) 9090016-MSDI L908220-01 <br /> Surrogate a a,a-Tnfluorotoluene 9/2/99 100 707 ug/1 700-130 70 7 <br /> Batch 9090019 Date Prepared 9/3/99 Extraction Method EPA 5030B IP/T1 <br /> Blank 9090019-BLKI <br /> Purgeable Hydrocarbons as Gasoline 9/3/99 ND ug/l 500 <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 500 <br /> Surrogate a,a,a-Triuorotoluene 100 100 700-130 100 <br /> LCS 9090019-BSI <br /> Benzene 9/3/99 100 102 ug/l 700-130 102 <br /> luene " 100 102 700-130 102 <br /> ylbenzene 100 999 700-130 999 <br /> ylenes(total) 300 301 700-130 100 <br /> Surrogate a,a,a-Tnfluorotoluene 100 103 700-130 103 <br /> LCS 9090019-113S2 <br /> Purgeable Hydrocarbons as Gasoline 9/3/99 250 240 ug/1 700-130 960 <br /> Surrogate a,a,a-Trifluorotoluene ft100 109 700-130 109 <br /> Matrix SRike 9090019-MSI L908164-01 <br /> Benzene 9/3/99 100 ND 108 ug/l 600-140 108 <br /> Toluene 100 ND 100 600-140 100 <br /> Ethylbenzene 100 ND 11 2 600-140 112 <br /> Xylenes(total) 300 ND 326 600-140 109 <br /> Surrogate a,a a-Trifluorotoluene 100 105 700-130 103 <br /> Matrix Spike Dup 9090019-MSDI L908164-01 <br /> Benzene 9/3/99 100 ND 108 ug/l 600-140 108 25 0 0 <br /> Toluene 100 ND 990 " 600-140 990 25 0 101 <br /> Ethylbenzene 100 ND 11 1 600-140 111 25 0 0 897 <br /> Xylenes(total) 300 ND 324 600-140 108 25 0 0 922 <br /> Surrogate a,a,a-Trifluorotoluene 100 101 700-130 101 <br /> uoia Analytical- San Carlos *Refer to end of report for text of notes and definitions <br /> Page 11 of 13 <br />