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Sequoia Wain t Geek. CA 94 98 <br />(925)988-9600 <br />Analytical Fw (quDWabscom <br />+� xquolalabs.coin <br />wio- <br />Crettler Ryan InL - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron #19-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 24 -Aug -00 14 37 <br />Volatile Organic Compounds by LFA MetttoU 82but3 <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analvte Result Lirrut Units Dilution Batch Prepared Analvzed Method Notes <br />Effluent (W008527-01) Water Sampled 23 -Aug -00 13 30 Received 23 -Aug -00 14 55 <br />tert-Butvl alLohoi ND 100 U-Wi I OH23014 23 Aug -00 23 -Aug 00 EPA 82608 <br />Methvl left-butvl ether ND 20 <br />Di -isopropyl ether ND 20 " <br />Ethvl tert-butvl ether ND 20 " <br />tett-Amvl methvl ether ND 20 " <br />Surrogate Dibromofluoromethane 860% 50-150 <br />Surrogate 12-Dichloroethane-d4 940% 50-150 " <br />MP -2 (WO08527-02) Water Sampled 23 -Aug -00 13 34 Received 23 -Aug -00 14 55 <br />tent -Butyl alcohol ND 100 ugrl l OH23014 23 Aug -00 23 -Aug -00 EPA 8260B <br />Methvl tert-butvl ether ND 20 " <br />Di -isopropyl ether ND 20 " <br />Ethyl tert-butyl ether ND 20 <br />AWmyl methyl ether- _ ND 20 <br />3lKogate DibromoJluoromethane 860% 50-150 " <br />Surrogate 12-Dichloroethaned4 940% 50-150 " <br />MP -1 (W008527-03) Water Sampled 23 -Aug -00 13 38 Received 23 -Aug -00 14 55 <br />tert-Butvl alcohol ND 100 ug/l 1 OH23014 23 -Aug -00 23 -Aug -00 EPA 8260B <br />Methyl tert-butyl ether ND 20 " <br />Di -isopropyl ether ND 20 <br />Ethyl tert-butyl ether ND 20 <br />tent -Amyl methvl ether ND 20 " <br />Surrogate Dibromofluoramethane <br />Surrogate I l Dichloroethaned4 <br />920% 50-150 " <br />960% 50-150 " <br />uoia Analytical - Walnut Creek The results in alas report apply to the sampler analyzed in accordance with the churn of <br />custody document This analytical report must be reproduced in its entirety <br />Page 4 of 8 <br />-cam <br />