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QSequoia <br />� Analytical <br />404 N WigetLane <br />Walnut Creek, CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialabs corn <br />(,c,ttler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite 1 Project Number Chevron #9-5775 Reported <br />Dublin CA 94568 Project Manager Scott POlston 15 -Aug -000802 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFT <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Note; <br />EFFLUENT (WOO8305-01) Water Sampled 10 -Aug -00 13 23 Received 11 -Aug -0015 00 <br />-Pu gSible Hydrocarbons <br />ND <br />50 u 1 OH14002 14 -Aug -00 14 -Aug -00 DHS LUFT <br />Benzene <br />ND <br />050 " <br />Toluene <br />ND <br />050 " <br />Ethylbenzene <br />ND <br />050 " <br />Xylenes (total) <br />10 <br />050 " <br />Surrogate a a a-Trtfluorotoluene <br />roluene <br />99 7% 70-130 <br />MP -2 (W008305412) Water Sampled <br />10 -Aug -00 13 26 <br />Received 11 -Aug -00 15 00 <br />Purgeable Hydrocarbons <br />ND <br />50 ug/1 1 01114002 14 -Aug -00 14 -Aug -00 DHS LUFT <br />Benzene <br />ND <br />050 <br />Toluene <br />ND <br />050 <br />Ethylbenzene <br />ND <br />050 " <br />Xylenes (total) <br />ND <br />050 " <br />,Surrogate a a a-1 nJitiorotoluene <br />99 3 % <br />70-130 . <br />MP -1 (WO1183O5413) Water Sampled <br />10 -Aug -00 13 29 <br />Received <br />i l -Aug -00 15 00 <br />Purgeable Hydrocarbons <br />ND <br />50 <br />ugrl 1 OH14002 14 -Aug -00 14 -Aug -00 DHS LUFT <br />Benzene <br />ND <br />0 50 <br />" <br />roluene <br />ND <br />0 50 <br />" <br />Ethylbenzene <br />ND <br />050 <br />" <br />Xylenes (total) <br />ND <br />0 50 <br />" <br />Surrogate a a,a-Trtfluorotoluene <br />963% <br />70-130 <br />INFLUENT (WO08305-04) Water Sampled 10 -Aug -00 13 33 Received 11 -Aug -0015 00 R4)5 <br />Purgeable Hydrocarbons <br />ND <br />10000 <br />ug/1 200 OH14002 14 -Aug -00 14 -Aug 00 DHS LUFT <br />Benzene <br />650 <br />100 <br />" <br />Toluene <br />ND <br />100 <br />" <br />Ethylbenzene <br />ND <br />100 <br />" <br />Xylenes (total) <br />ND <br />100 <br />" <br />Surrogate a a a-Trtfluorotoluene <br />101 % <br />70-130 " <br />Sequoia AnalvOcal - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain <br />custody document This analytical report must be reproduced in as entire <br />Page 2 of 7 <br />