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i <br /> I <br /> Sequoia� 1551 Industrial Road, San Carlos, CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical <br /> FAX (650) 232-9612 <br /> latne Tech Services Project Blaine/Chevron Sampled 3/29/00 <br /> 1680 Rogers Avenue Project Number Chevron 9-3232/8660 Sacramento, Stockton Received 3/31/00 <br /> San Jose,CA 95112 Project Manager Scott Boor Reported 4/13/00 <br /> —;Y a nrgesb a ffydro a bo-s(C rC12),B L and'M BE h 13II�LIT 'TJQ> ty Control �.-_-.� <br /> Segnoia Analytical-San Carlos _ _ �- <br /> Date Spike Sample QC Reporting Lnmut Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Lntmt % Notes* <br /> Batch 0040032 Date Prepared 417100 Extraction Method EPA 5030B[P/T1 <br /> Blank 0040032-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 4/7/00 ND ug/l 500 <br /> Benzene 11 ND " 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether " ND " 500 <br /> Surrogate a,a,a-Tnfluarotoluene 100 103 Of <br /> 700-130 103 <br /> LCS 0040032-BSI <br /> Benzene 417/00 100 122 ug/l 700-130 122 <br /> Toluene 100 11 9 700-130 119 <br /> Ethylbenzene 100 120 700-130 120 <br /> Xylenes(total) it 300 35 5 700-130 Ns <br /> rrogate a,a,a-Triuorotoluene " 100 100 700-130 100 <br /> CS 0040032-BS2 <br /> Purgeable Hydrocarbons as Gasoline 4/7/00 250 240 ug/l 700-130 960 <br /> Surrogate a a a-Triuorotoluene 0 100 101 700-130 101 <br /> Matrix Spoke 0040032-MS1 L003297-02 <br /> Purgeable Hydrocarbons as Gasoline 4/7100 250 ND 227 ug/l 600-140 908 <br /> Surrogate a,a a-Trifluorotoluene " 100 110 700-130 110 <br /> Matrix Spike Dup 0040032-MSD1 L003297-02 <br /> Purgeable Hydrocarbons as Gasoline 4/7/00 250 ND 238 ug/l 600-140 952 25 0 473 <br /> Surrogate a,a,a-Trifluorotoluene 11 100 8 89 fr 700-130 88 9 <br /> Batch 0040038 Date Prepared 4/8/00 Extraction Method EPA 5030B IP/T1 <br /> Blank 0040038-BLKI <br /> Purgeable Hydrocarbons as Gasoline 418/00 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 It ND It 500 <br /> Surrogate a a,a-Tnfluorotoluene rt 100 911 " 700-130 911 <br /> LCS 0040038-BS 1 <br /> Benzene 418100 100 102 ugll 700-130 102 <br /> Toluene 100 988 It700-130 988 <br /> uoia Analytical-San Carlos *Refer to end of reportfor text of notes and definitions <br /> Page 6 of 9 <br />