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�\ Sequoia <br />• <br />Analytical <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 998-9673 <br />www sequoialab5 com <br />Gettler Ryan, Inc -Dublin Project Chevron <br />6747 Sierra Court Suite J ProjectNumber Che,.ron SS#9-5775 Reported <br />Dublin CA, 94568 Project Manager Scott Polston I I -May -00 07 30 <br />Total Purgeable Hydrocarbons (C6-Cl2) and BTEX in Air (ppmv) by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />tndlNle Result Limit Units Dilution 130-11 Prepared Analyzed Method Note <br />EFF (W004648-01) Air Sampled <br />26 -Apr -00 15 40 <br />Recen ed 28 -Apr -00 I3 30 <br />Purgcable Hs droutrbons <br />11 <br />24 ppm. 1 OE03007 28 Apr 00 28 Apr 00 DHS LUFT <br />Benzene <br />020 <br />0 016 <br />Tolucne <br />0 64 <br />0 013 <br />EthslhcnzcnL <br />025 <br />0 012 <br />X) tines (total) <br />2 0 <br />0 012 <br />INF(WO04648-02)Air Sampled <br />26 -Apr -001550 <br />Recen ed 28 -Apr -001330 <br />Pursc.abl(-H) drot.irhons <br />15 <br />2 4 ppmv 1 OL03007 28 -Apr -00 28 -Apr 00 DHS LUFT <br />Benzene <br />0 081 <br />0 016 <br />Toluene <br />055 <br />0 013 <br />Eth%Ihenza_ne <br />032 <br />0 012 <br />Xylenes (to t.11) <br />2 5 <br />0 012 " <br />10 <br />Nerluola Analytical - Walnut Creek <br />The re trills in this report apply to the samples anoly:ed m accordance m ith [he chain of <br />custody document This analytical report artist be reproduced ni tis enlrrety <br />Page 4 of 7 <br />