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CALTECH Environmental Laboratories <br /> 6814 Rosecrans Avenue Pacaniount CA 90723-3146 <br /> { � O Telephone (562) 272-2700 Fax (562) 272-2789 <br /> QA/QC Report <br /> Method 8270C <br /> Matrix Water <br /> Date Analyzed 11/24/04 <br /> i <br /> Units ug/L <br /> Perimeters MS MSD Spike MS% MSD% Limits RPD <br /> Added Rec Rec <br /> Phenol 89 90 100 89 90 60-140 1 <br /> 2-Chlorophenol 80 78 100 80 78 60-140 2 <br /> 1,4-Dichlorobenzene 92 95 100 92 95 60-140 3 <br /> n-Nitroso-di-n-propylamine 99 102 100 99 102 60-140 3 <br /> 1,2,4-Trichlorobenzene 80 82 100 80 82 60-140 2 <br /> 4-Chloro-3-meth I henol 83 87 100 83 87 60-140 4 <br /> Acenaphthene 100 103 100 100 103 60-140 3 <br /> 4-Nitrophenol 98 94 100 98 94 60-140 4 <br /> 2,4-Dinitrotoluene 78 79 100 78 79 60140 1 <br /> Pentachlorophenol 101 96 100 101 96 60-140 5 <br /> Pyrene 96 1 98 100 96 1 98 1 60-140 2 <br /> LCS Laboratory Control Standard <br /> LCSD Laboratory Control Standard Duplicate <br /> RPD Relative Percent Difference of LCS and LCSD <br /> rPerimeters Blank Limits RPD <br /> 1 Phenol ND 70-130 <br /> 2-Chlorophenol- ND 70-130 <br /> I 1,4-Dichlorobenzene ND 70-130 <br /> n-Nitroso-di-n- rop lamine ND 70-130 <br /> 1,2,4-Trichlo robe nzene ND 70-130 <br /> I 4-Chloro-3-meth I keno! ND 70-130 <br /> Acenaphthene ND 70-130 <br /> 4-Nitrophenol ND 70-130 <br /> 2,4-Dirntrotoluene ND 70-130 <br /> I Pentachlorophenol ND 70-130 <br /> Pyrene ND 70-130 <br /> TOTALLY DEDICA71'LD TO CUSTOMER SATISFACTION <br />