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Page 23 of 26 <br /> alscience <br /> =nvironmental Quality Control - LCS/LCS Duplicate <br /> Aw aboratories, Inc. <br /> Parsons Date Received: N/A <br /> 2121 North California Blvd., Suite 500 Work Order No: 08-10-2147 <br /> Walnut Creek, CA 94596-7305 Preparation: EPA 5030B <br /> Method: EPA 8260B <br /> Project: Tracy SPCC/444692 <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099-12-796-406 Solid GUMS EE 10/24/08 10/24/08 0810241-01 <br /> Parameter LCS%REC LCSD%REC %REC CL ME CL RPD RPD CL Qualifiers <br /> Benzene 108 108 84-114 79-119 0 0-7 <br /> Carbon Tetrachloride 104 105 66-132 55-143 1 0-12 <br /> Chlorobenzene 108 109 87-111 83-115 1 0-7 <br /> 1,2-Dibromoethane 112 112 80-120 73-127 0 0-20 <br /> 1,2-Dichlorobenzene 108 106 79-115 73-121 2 0-8 <br /> 1,1-Dichloroethene 99 99 73-121 65-129 0 0-12 <br /> Ethylbenzene 113 115 80-120 73-127 1 0-20 <br /> Toluene 106 107 78-114 72-120 1 0-7 <br /> Trichloroethene 106 107 84-114 79-119 1 0-8 <br /> Vinyl Chloride 106 105 63-129 52-140 1 0-15 <br /> Methyl-t-Butyl Ether(MTBE) 100 99 77-125 69-133 1 0-11 <br /> Tert-Butyl Alcohol(TBA) 92 88 47-137 32-152 4 0-27 <br /> Diisopropyl Ether(DIPE) 106 104 76-130 67-139 3 0-8 <br /> Ethyl-t-Butyl Ether(ETBE) 105 105 76-124 68-132 0 0-12 <br /> Tert-Amyl-Methyl Ether(TAME) 110 109 82-118 76-124 1 0-11 <br /> Ethanol 87 83 59-131 47-143 5 0-21 <br /> Total number of LCS compounds: 16 <br /> Total number of ME compounds : 0 <br /> Total number of ME compounds allowed: 1 <br /> LCS ME CL validation result: Pass <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 />