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QSequoia <br />qW Analytical <br />404 N Wlget lane <br />Walnut Geek CA 94598 <br />(925)988-960D <br />FAX (9Z5) 988-9673 <br />www secluolalab§,W <br />Gettler Ryan, lilt -Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron 4 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 24 -Jul -00 11 33 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br />Effluent (Air) (W007143-01) Air Sampled 10 -Jul -00 10 35 Received 10 -Jul -00 13 20 <br />text -Butyl alcohol <br />ND <br />20 mgtm+ Air 1 OGI IO15 11 -Jul -00 1 I -Jul -00 EPA 8260A <br />Methyl tert-butyl ether <br />ND <br />050 <br />Dt isopropyl ether <br />ND <br />050 <br />Ethyl tert-butyl ether <br />ND <br />050 <br />" <br />tert-Amyl methyl ether <br />ND <br />050 <br />" <br />Surrogate Dibromofluoromethane <br />102% <br />50-150 " <br />Surrogate 11-Dichloroethaned4 <br />920% <br />50-150 " <br />Influent (Air) (W007143-02) Air Sampled <br />10 -Jul -00 10 37 Received 10 -Jul -00 13 20 <br />tert Butyl alcohol <br />780 <br />500 <br />mWm3 Au 25 OCTI IO15 11 -Jul -00 l I-JUI-00 EPA 8260A <br />Methyl tert-butyl ether <br />2200 <br />130 <br />250 " <br />Di -isopropyl ether <br />ND <br />050 <br />1 " <br />Ethyl Cert -butyl ether <br />140 <br />13 <br />25 " <br />telt Amyl methyl ether <br />ND <br />050 <br />1 - <br />Surrogate Dibromofluoromethane <br />860% <br />50-150 <br />Surrogate 1,1 Dtchloroethaned4 <br />174% <br />50-150 S-04 <br />Effluent (W007143-03) Water Sampled 10 -Jul -001120 <br />Received 10 -Jul -001320 <br />Ethanol <br />ND <br />500 <br />ugJl I OG10007 10 -Jul -00 IO -Jul -00 EPA 8260A <br />tert-Butyl alcohol <br />ND <br />100 <br />Methyl tert-butyl ether <br />ND <br />20 <br />Dmsopropyl ether <br />ND <br />20 <br />Ethyl tert-butyl ether <br />ND <br />20 <br />test -Amyl methyl ether <br />ND <br />20 <br />" <br />1,2-Dichlomethane <br />ND <br />20 <br />Ethylene dibromide <br />ND <br />20 <br />" <br />Surrogate Dibranofluoromedwrie <br />940% <br />50-150 " <br />Surrogate 11 Dech1oroedk=ed4 <br />820% <br />50-150 " <br />Sequoia Analytical - Walnut Creek The residte in dus report apply to the sanples analyted m accordaice with the c <br />custody docwne n. This atalytreal nporr mast be reproduced in its e <br />Page 5 of 15 <br />