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Page 16 of 26 <br /> alscience <br /> nvironmental Quality Control - Spike/Spike Duplicate <br /> aboratories, Inc. <br /> Parsons Date Received: 10/24/08 <br /> 2121 North California Blvd., Suite 500 Work Order No: 08-10-2147 <br /> Walnut Creek, CA 94596-7305 Preparation: EPA 50308 <br /> Method: EPA 82608 <br /> Proiect Tracv SPCC/444692 <br /> Date Date MS/MSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> COMP(SPCC-CHAR-1) Solid GUMS EE 10/24/08 10/24/08 081024S01 <br /> Parameter MS%REC MSD%REC %REC CL RPD RPD CL Qualifiers <br /> Benzene 105 106 79-115 1 0-13 <br /> Carbon Tetrachloride 102 103 55-139 1 0-15 <br /> Chlorobenzene 107 107 79-115 0 0-17 <br /> 1,2-Dibromoethane 102 97 70-130 5 0-30 <br /> 1,2-Dichlorobenzene 102 103 63-123 1 0-23 <br /> 1,1-Dichloroethene 97 99 69-123 2 0-16 <br /> Ethylbenzene 113 114 70-130 1 0-30 <br /> Toluene 103 104 79-115 1 0-15 <br /> Trichloroethene 102 104 66-144 2 0-14 <br /> Vinyl Chloride 109 107 60-126 2 0-14 <br /> Methyl-t-Butyl Ether(MTBE) 93 90 68-128 3 0-14 <br /> Tert-Butyl Alcohol(TBA) 70 62 44-134 12 0-37 <br /> Diisopropyl Ether(DIPE) 99 98 75-123 1 0-12 <br /> Ethyl-t-Butyl Ether(ETBE) 101 101 75-117 1 0-12 <br /> Tert-Amyl-Methyl Ether(TAME) 103 101 79-115 2 0-12 <br /> Ethanol 71 63 42-138 12 0-28 <br /> RPD-Relative Percent Difference, CL-Control Limit <br /> 7440 Lincoln Way, Garden Grove, CA 92841-1427 . TEL:(714) 895-5494 FAX: (714) 894-7501 <br />