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SIERRA ANALY 1CAL <br /> GHH Engineerin25 <br /> g, Inc. ELAP No.: 2320 <br /> 8084 Old Auburn Road, Suite E Date Sampled: 04/06/00 <br />' Citrus Heights, CA 95610 Date Received: 04/15/00 <br /> Date Prepared: 04/19/00 <br /> Sierra Project No.: 0004_3,7 Date Analyzed: 04/19/00 <br /> Analyst. WCH <br /> Client Project ID: USA-Stockton/ 5007 10 <br /> Sample Matrix: Water Report Date. 04/20/00 <br />' Oxygenated Fuel Additives (GC/MS) <br /> Preparation Method Purge&Trap Concentrator(EPA Method 5030) <br /> Analysis Method EPA Method 8260B <br /> Client Sample No - MW-iP MW-2 MW-5P <br /> Practical <br /> Quantitation Units <br /> Sierra Sample No • 9567 9568 9559 Limit <br /> Analytes- <br /> 1,2-DCA <br /> nalytes-1,2-DCA 23 ND 14 10 Alm <br /> MTBE 074 10 ND 05 µg/L <br /> 53 ND 160 50 �Lg/L <br /> Ethanol ND ND ND 50 Ag/L <br /> TBE ND ND 21 50 jig/l, <br /> AME ND ND ND 50 gg/L <br /> TBA ND ND ND 50 µg/L <br /> elution Factor I 1 1 QC Limits - <br /> iBiornofluorobenzene <br /> unogate Recovery <br /> ibromofluoromethane 97 98 100 80-120 <br /> oluene-d8 91 90 91 81-117 % <br /> 90 84 91 74-121 <br /> IC Reference No 000419-BL Quality Assurance/ uahty Control Data <br /> LUV- LCS <br /> nalytes. pie Spike Dup Spike RPD <br /> Rec OC Limits %Rec % Rec QC Limits RPD QC Limits <br /> 117 - 120 117 1 ix j7- 1 0 0- 3 <br /> ND nieans Not Detected <br /> �eporting Limit(F-L)=Practical Quanumnon Limit(PQL)x Dilution Factor <br />