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SIERRA ANALYTICAL <br /> t <br /> GHH Engineering,Inc. ELAP No.: 2320 <br /> 11960 Heritage Oak Pl, Suite 2B Date Sampled 04112/02 <br /> Auburn, CA 95603 Date Received: 04/19/02 <br /> t Date Prepared: 04/19/02 <br /> Date Analyzed: 4119-4122102 <br /> Sierra Project No.: 0204-301 Analyst: SM <br /> Client Protect ID. USA-Stockton/ 5007 10 <br /> Sample Matrix: Water Report Date. 04/22/02 <br /> r Oxygenated Fuel Additives(GCIMS) <br /> Preparation Method Purge&Trap Concentrator(EPA Method 5030) <br /> Analysis Method, EPA Method 8260B <br /> Client Sample No MW-1P MW-2P MW-3P MW-4P MW-5P <br /> Practical <br /> Quantitation Units <br /> Limit <br /> Sierra Sample No.: 7916 7917 7918 7919 7920 <br /> Analytes: <br /> 1,2-DCA 8 1 75 2 5 ND 12 1 0 µg? <br /> fn <br /> BB 057 140 44 ND ND 05 rg'l <br /> E 23 ND 19 ND 190 5E ND ND ND ND ND 50 k� L <br /> ME ND ND ND ND ND 50 p g'L <br /> A ND 180 ND ND ND 50 µgJL <br /> tiution Factor 1 1 1 1 1 QC Limits - <br /> Surrogate Recovery <br /> Dib romofluoromethane 108 105 104 108 109 80-120 <br /> oluene-d8 105 105 105 105 106 81-117 % <br /> -Bromofluorobenzene 104 105 103 1 104 1 103 1 74-121 <br /> Quality Assurance!Quality Control Data L_L� <br /> C Reference No 020419-BL <br /> LCS LCSSpike Spike Dup. Spike RPD RPD <br /> Analytes: % Rec C Limits %Rec % Rec I OC Limits QC Limits <br /> IMTBE 104 80- 120 112 112 1 37- 160 00 0-30 <br /> ND means Mot Detected <br /> Reporting Limit(RL)=Practccal Quantitation Limit(PQL)x Dilution Factor <br /> I <br /> • <br />