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1 <br /> Entech Analytical Labs, Inc., Santa Clara, CA <br /> Lab Report No.: H2121612 Date: 12/26/2002 Page: 4 <br /> Project Name: SUPER STOP MARKET Analysis. Volatile Organic <br /> y r9 Compounds by GC/MS Fuel <br /> Project No: 662.2 Method: 8260FA <br /> Prep Meth: SW5030B <br /> Field ID: MW-3 Lab Samp ID: 32600-002 <br /> Descr/Location: MW-3 Rec'd Date: 12/18/2002 <br /> Sample Date: 12/13/2002 Prep Date: 12/20/2002 <br /> Sample Time: 1120 Analysis Date: 12/20/2002 <br /> Matrix: Water QC Batch: WMS11850 <br /> Basis: Not Filtered Notes: <br /> Analyte Det Limit Rep Limit Note Result Units Pvc Dil <br /> Methyl-tent-butyl ether(MTBE) 20. 50. PQL 110Q UG/L 50 <br /> Ethyl tert-butyl ether(ETBE) 30. 250. PQL ND UG/L 50 <br /> tert-Amyl methyl ether(TAME) 20. 250. PQL ND UGJL 50 <br /> Di-isopropyl ether(RIPE) 30. 250. PQL ND UGIL 50 <br /> tert-Butyl alcohol (TBA) 230. 500. PQL ND UG/L 50 <br /> SURROGATE AND INTERNAL STANDARD RECOVERIES: <br /> 4-Bromofluorobenzene 65-135 SMEA 110% 1 <br /> Toluene-d8 77-150 SMEA 124% 1 <br /> Dibromofluoromethane 57-156 SMEAAZ 39,1% 1 1 <br /> _ AZ: Surr. recovery outside of acceptance limits due to matrix interf. <br /> Approved by: „ .,._ Date: <br />