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Page 12 of 17 <br /> alscience <br /> =nvironmentai Quality Control - LCS/LCS Duplicate <br /> aboratories, Inc. <br /> Shell Oil Pipeline Company LP Date Received: N/A <br /> P.O. Box 2648 Work Order No: 09-09-1933 <br /> Houston, TX 77252-2648 Preparation: EPA 5030B <br /> Method: EPA 8260B <br /> Project: 25705 Patterson Pass Rd., Tracy, CA <br /> Date Date LCS/LCSD Batch <br /> Quality Control Sample ID Matrix Instrument Prepared Analyzed Number <br /> 099-10-006-30,863 Aqueous GC/MS WW 09129109 09/29/09 0909291-03 <br /> Parameter LCS%REC LCSD%REC %REC CL ME CL RPD RPD CL Qualifiers <br /> Benzene 117 118 80-122 73-129 1 0-20 <br /> Carbon Tetrachloride 148 149 68-140 56-152 1 0-20 ME <br /> Chlorobenzene 109 110 80-120 73-127 1 0-20 <br /> 1,2-Dibromoethane 109 111 80-121 73-128 1 0-20 <br /> 1,2-Dichlorobenzene 105 108 80-120 73-127 2 0-20 <br /> 1,1-Dichloroethene 108 113 72-132 62-142 4 0-25 <br /> Ethylbenzene 112 110 80-126 72-134 1 0-20 <br /> Toluene 113 115 80-121 73-128 1 0-20 <br /> Trichloroethene 122 122 80-123 73-130 0 0-20 <br /> Vinyl Chloride 114 117 67-133 56-144 2 0-20 <br /> Methyl-t-Butyl Ether(MTBE) 104 113 75-123 67-131 8 0-20 <br /> Tert-Butyl Alcohol(TBA) 105 98 75-123 67-131 7 0-20 <br /> Diisopropyl Ether(DI PE) 115 117 71-131 61-141 2 0-20 <br /> Ethyl-t-Butyl Ether(ETBE) 116 120 76-124 68-132 4 0-20 <br /> Tert-Amyl-Methyl Ether(TAME) 116 117 80-123 73-130 1 0-20 <br /> Ethanol 87 88 61-139 48-152 1 0-27 <br /> Total number of LCS compounds : 16 <br /> Total number of ME compounds: 1 <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 />