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Page 32 of 54 <br /> alscience <br /> _nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> Blaine Tech Services, Inc. Date Received: 12/29/10 <br /> 1680 Rogers Avenue Work Order No: 10-12-2197 <br /> San Jose, CA 95112-1105 Preparation: EPA 5030C <br /> Method: EPA 8260B <br /> Project San Joaquin Valley Pipeline Devel E, Mountain House, CA <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> MW-19(B) Aqueous GC/MS FF 12/31/10 01/01/11 101231502 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 98 96 78-120 3 0-20 <br /> Carbon Tetrachloride 85 88 67-139 3 0-20 <br /> Chlorobenzene 97 97 80-120 0 0-20 <br /> 1,2-Dibromoethane 105 103 80-123 2 0-20 <br /> 1,2-Dichlorobenzene 95 93 76-120 2 0-20 <br /> 1,2-Dichlorcethane 104 100 76-130 4 0-20 <br /> 1,1-Dichlorcethene 89 90 70-130 1 0-27 <br /> Ethylbenzene 94 95 73127 1 0-20 <br /> Toluene 96 94 72-126 1 0-20 <br /> Trichloroethene 94 94 74-122 0 0-20 <br /> Vinyl Chloride 77 80 65-131 4 0-24 <br /> Methyl-t-Butyl Ether(MTBE) 92 92 69-123 0 0-20 <br /> Tert-Butyl Alcohol(TBA) 100 97 65-131 2 0-22 <br /> Diisop apyl Ether(DIPE) 92 95 68-128 2 0-22 <br /> Ethyl-t-Butyl Ether(ETBE) 93 93 69-123 1 0-21 <br /> Tert-Amyl-Methyl Ether(TAME) 96 93 70-124 2 0-20 <br /> Ethanol 100 95 41-155 5 0-35 <br /> "Relative Percent Difference. CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL(714) 895-5494 • FAX (714)894-7501 <br />