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i <br /> Page 12 of 18 <br /> aiscience <br /> aEnvironmental Quality Control - LCS/LCS Duplicate <br /> Laboratories, Inc. „' ....... .. <br /> Shell Oil Pipeline Company LP Date Received: NIA <br /> P.O. Box 2648 Work Order No: .10-02-0380 <br /> Houston, TX 77252-2648 Preparation: EPA 5030B <br /> Method: EPA 82608 <br /> Project: 25705 Patterson Pass Rd., Tracy, CA <br /> Date' Date LCSILCSD Batch <br /> i <br /> Quality control sample ID Matrix Instrument Prepay Analyzed Number <br /> 088.10-0OH-32,205 Aqueous GCINIS L 02110/10 02/10110 10021OL04 <br /> Parameter LCS%REC LC8D%ITECR%� RPD RPO CL Qualifiers <br /> Benzene 103 180 80-122 .73-129 3 0.20 <br /> Carbon Tetrachloride 108 108 68-140 56-152 0 0-20 <br /> Chlorobenzene 102 .101 80-120 73-127 1 0-20 <br /> 1.2-Dlbromoethane 103 104 80-121 73-128 0 0-20 .. <br /> 1,2-Dichlorobenzene 106 .104 80-120 73-127 2 0-20 <br /> 1.1-Dichloroethene 127 123 72-132 62-142 4 0-25 <br /> £thytbenzene 115 111 80-128 72-134 3 0-20 <br /> Toluene 106 103 80-121. 73-128 2 0-20 <br /> Trichloroethene 110 108 80-123 73-130 .2 0-20 <br /> Vinyl Chloride 102 106 67-133 56-144 4 0-20 <br /> Methyl t Butyl Ether(MTBE) 108 106 75.123 67-131 2 0-20 <br /> Tert-Butyl Alcohol(TBA) 97 66 75.123 67-131 12 0-20 <br /> 011sopropyl Ether(DIPE) 113 110 71-131 61-141 3 0-20 <br /> Ethyl-t-Butyl Ether(ETRE) 108 110 78.124 68-132 1 0-20 <br /> kf <br /> TedbAmyl-Mathyl Ether(TAME) 111 109 80.123 73-130 2 0-20 <br /> 4 Ethanol 97 78 61-138 48-152 22 0-27 <br /> } Total number of LCS compounds: 16 <br /> Total number of ME compounds: 0 <br /> Total number of ME compounds allowed <br /> LCS ME CL valldatton result., Pass <br /> I. <br /> RPD-RetaM Percent Difference CL-control Urnit <br /> 7440 Lincoln Way,Garden Grove,CA 92841-1427 . TEL:(714)895-5494 . FAX: (714)894-7501 <br />