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Sequoia Walnut <br />N WiLane <br />t Geek CAA 94598 <br />4 ID19251988-9600 <br />wo Analytical www FAX (915) 73 <br />vsequofalabsabs cc oin <br />Gettler Ryan, Inc - Dubhn Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA, 94568 Project Manager Deanna L Harding 29 -Jul -0017 31 <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 />MW -2 (W007484-02) Water <br />Sampled 24 -Jul -00 16 25 <br />Received 25 -Jul -00 14 30 <br />Ethanol <br />ND <br />500 ug/1 1 0026017 25 -Jul -00 25 -Jul -00 EPA 8260A <br />tert-Butyl alcohol <br />ND <br />100 ^ <br />Methyl tert-butyl ether <br />ND <br />20 <br />Di -isopropyl ether <br />ND <br />20 <br />Ethyl Cert -butyl ether <br />ND <br />20 <br />tertAmyl methyl ether <br />ND <br />20 <br />1,2-Dichloroethane <br />ND <br />20 <br />Ethylene dibromide <br />ND <br />20 <br />Surrogate Dibromofluoromethane <br />Surrogate 1,2-Dichloroethane-l4 <br />104% 50-150 ^ ^ <br />102% 50-150 ^ <br />MW -3 (W007484-03) Water Sampled 24 -Jul -0017 15 Received 25 -Jul -00 14 30 <br />Ethanol <br />ND <br />500 ugn L OG26017 25 -Jul -00 25 -Jul -00 EPA 8260A <br />tert-Butyl alcohol <br />ND <br />100 ^ ^ „ ^ <br />Methyl tert-butyl ether <br />30 <br />20 <br />Di -isopropyl ether <br />ND <br />20 <br />Ethyl tert-butyl ether <br />16 <br />20 ^ ^ ^ ^ <br />tert-Amyl methyl ether <br />ND <br />20 <br />1,2-Dlchloroethane <br />ND <br />20 <br />Ethylene dibromide <br />ND <br />20 <br />Surrogate Dibromofluoromedume 100% 50-150 ^ ^ <br />Surrogate 1,1 Diehloroedme-l4 108% 50-150 " ^ <br />MW4 (W007484-04) Water Sampled 24 -Jul -001621 Received 25 -Jul -001430 <br />Ethanol <br />ND <br />500 ugA 1 0026017 25 -Ad -00 25 -Jul -W EPA 8260A <br />telt Butyl alcohol <br />ND <br />100 w w w X w w <br />Methyl tert-butyl ether <br />1900 <br />100 ^ 50 ^ 27 -Ad -00 ^ <br />Di-mpropyl ether <br />ND <br />20 w 1 25-Ju1-00 ^ <br />Ethyl tert-butyl ether <br />110 <br />20 <br />tert Amyl methyl ether <br />22 <br />20 w w ^ n ^ n <br />1,2-Dichloroethane <br />ND <br />20 <br />Ethylene dibromide <br />ND <br />20 ^ ^ X w X w <br />Surrogate Dibromofluoromedume 102% 50-150 ^ ^ <br />Surrogate 41 Dtehloroedme-l4 106% 50-150 ^ ^ <br />Sequoia Analytical - Walnut Creels The results in flus report apply to the samples analyzed in accordance with the churn <br />custody document. Ms analytical report must be reproduced to its enti-W <br />Page 9 of 26 <br />,A <br />