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Sequoia A 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> ID <br /> 404 N Wiget taut Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 4673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Pacific Environmental Group Client Project ID 920-119 1A/Chevron 9-6171 Sampled Jan 29, 1998 <br /> 11315 Sunnse Gold Circle, Ste M Sample Matrix Soli Received Jan 30, 1998 <br /> Rancho Cordova CA 95742 Analysis Method EPA 5030/8020 Modified Reported Feb 2 1998 <br /> Attention Dennis M Jones First Sample # 801-0955 <br /> METHYL TERTIARY BUTYL ETHER (MTBE) <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D <br /> mg/kg 801-0955 801-0956 801-0957 801-0958 801-0959 <br /> Spoils 1 A&B Spoils 2 ABC Spoils 3-A&B Spoils 4-ARCD Spoils 5 A&B <br /> Composite Composite Composite Composite Composite <br /> MTBE 0050 ND ND ND ND ND <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 1 0 <br /> Date Analyzed 01/30/98 01/30/98 01/30/98 01/30/98 01/30/98 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery 96 104 98 115 96 <br /> (QC Limits = 60-140°x) <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, ELAP #1624 <br /> Hila C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 8010955 PES <2> <br />