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Sequoia 680 Chesapeake Drtve Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> ' 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX 916) 921- 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 707 792-1865 FAX(707)792-0342 <br /> 1551 Industnai Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650) 232-9612 <br /> Blaine Tech Services Project Chevron(3) Sampled 2/23/99 <br /> 1680 Rogers Avenue Project Number Chevron 9-6171,990223-Y2 Received 2/26/99 <br /> San Jose,CA 95112 Project Manager C:hnstine Lillie Reported 3/19/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9030004 Date Prepared 3/2199 Extraction Method EPA 5030B [PM <br /> Blanc. 9030004-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 3/2/99 ND ug/l 50 0 <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-Tnfluoro(oluene 100 10 i 700-130 10.) <br /> LCS 9030004-BSI <br /> Purgeable Hydrocarbons as Gasoline 3/2/99 250 211 ug/l 700-130 844 <br /> Surrogate a a a-Trifluorotoluene 11100 102 700-130 102 <br /> Matrix Spike 9030004-MSI L902014-02 <br /> Purgeable Hydrocarbons as Gasoline 3/2/99 250 ND 220 ug/l 600-140 880 <br /> Wurrogate a a a-Trifluorotoluene 11100 788 700-130 788 <br /> Matrix Spike Dup 9030004-MSDI L902014-02 <br /> Purgeable Hydrocarbons as Gasoline 3/2/99 250 ND 209 ug/I 600-140 83 6 250 5 13 <br /> Surrogate a a a-Tnfluorotoluene 11 100 12 7 " 700-130 127 <br /> Batch 9030013 Date Prepared 312199 Extraction Method EPA 5030B IP/Tl <br /> Blank 9030013-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 3/7/99 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xvlenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 500 <br /> Surrogate a s a-Tnfluorotoluene 100 119 700-130 119 <br /> LCS 9030013-BSI <br /> Purgeable Hydrocarbons as Gasoline 3/7/99 250 218 ug/l 700-130 87 2 <br /> Surrogate a a a-Trifluorotoluene 11100 13 7 700-130 137 4 <br /> Matrix SR„ike 9030013-MSI L902014-07 <br /> Purgeable Hydrocarbons as Gasoline 3/7/99 250 ND 269 ug/l 600-140 108 <br /> Surrogate a a a-Trifluorotoluene 100 132 700-130 132 4 <br /> Matrix Spike Dup 9030013-MSDI L902014-07 <br /> Purgeable Hydrocarbons as Gasoline 3/7/99 250 ND 233 ugil 600-140 93 2 25 0 14 7 <br /> quoia Analytical- San Carlos *Refer to end of report for text of notes and definitions <br /> �g Page 10 of 13 <br />