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6a0 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Stnker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ised Mar 2, 1998 <br /> Pacific Environmental Group Client Project 1D 920 122 1A/Chevron 9-9840 Re eivled Mar 3, 1998 <br /> 11315 Sunrise Gold Circle, Ste M Sample Matrix Soil <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8020 Modified Reported Mar 5, 1998 <br /> Attention Tim Anenson First Sample # 803-0061 <br /> METHYL TERTIARY BUTYL ETHER (MTBE) <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D 1 D I D <br /> mg/kg 803-0061 803-0062 803-0063 803-0064 803-0065 803-0066 <br /> TiA @ 13 T1B @ 13 T2A @ 13' T2B @ 13' T3A @ 13 T3B @ 13' <br /> MTBE 0050 ND ND ND ND ND ND <br /> Quality Control Data <br /> —Reporting Umit <br /> Multiplication Factor 50* 1 0 1 0 10 50* 10 <br /> Date Analyzed 03/03/98 03/03/98 03/03/98 03/03/98 03/03/98 03/03/98 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 97 93 93 96 100 96 <br /> (QC Limits = 60-140%) <br /> *Reporting limit raised due to matrix interference <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQU -IA ANALYTICAL, P #1624 <br /> L / <br /> inda C Schneeer <br /> Project Manager/Sacramento Laboratory <br /> 8030061 PES <3> <br /> t�,ru <br />