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iJ <br /> ® Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-%00 FAX(9z5)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 707)-792-1865 FAX(707)792-0342 <br /> 4kettler-Ryan - Dublin Client Project ID TOSCO#6981, zct$nl� � Lt `Sampled Jan 27, 1999 <br /> 6747 Sierra Court, Suite J Sample Matrix Air Received Jan 27, 1999 <br /> Dublin, CA 94568 Analysis Method EPA 5030/8015 Mod /8020 <br /> Reported Feb 10, 1998 <br /> Attention Deanna Harding First Sample # 901-1763 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARB6_4 th TE) <br /> DaSTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit i D I D <br /> lig/L 901-1763 901-1764 <br /> Eff Inf <br /> Purgeable <br /> Hydrocarbons 10 19 500 <br /> Benzene 0 050 N D 13 <br /> Toluene 0 050 N D 1 4 <br /> Ethyl Benzene 0 050 N D N D <br /> © Total Xylenes 0 050 N D 1 4 <br /> Chromatogram Pattern Unidentified Gasoline <br /> Hydrocarbons <br /> >C19 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 5 0 <br /> Date Analyzed 1/28/99 1/29/99 <br /> Instrument Identification HP-2 HP-2 <br /> Surrogate Recovery, % 99 178 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #1271 Please Note i <br /> " Surrogate recovery above control limit due to t;oelutlon <br /> 0 <br /> J lianne Fegley <br /> rolect Manager <br /> 9011763 GET <1> <br />