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80 Chesapeake DrLve Redwood C ty,CA 9406 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia 04 N Wiget Lane Walnut Creek CA 9459M(510) 988 9600 FAX(510)988 9673 <br /> 819 Stnker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> Analytical <br /> Blaine Tech Services -µ - Client Prot ID Shell Stockton/971121-G1 - Sampled 11/21/97 1 <br /> 1680 Rogers Avenue Sample Descript MW-2 Receiver! 11/24/97 <br /> San,lose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 _Analyzed 12/04/97 <br /> Attention Fran Thie Lab Number 9711 E95-02 _ Reported 01/14/98 „ <br /> OC Batch Number MS120497MTBEF3A <br /> Instrument ID F3 <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) 20 N D <br /> Di-Isopropyl Ether(DIPE) 20 N D <br /> Ethyl t-Butyl Ether(ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 101 <br /> s <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA YT CAL - EL.AP #1210 <br /> Peggy Penner <br /> Project Manager Page 4 <br />