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December 15, 2004 Lab ID STK438223 <br /> Customer 3014626 <br /> Micheline Doyle Kipf <br /> Quality Control. <br /> Organic QC <br /> 3520C 11/29/2004 A225 All preparation quality controls are within established criteria, except <br /> The following note applies to bts(2-Ethylhexyl)phthalate <br /> 210 The method blank was positive However, samples reported were either ten <br /> times greater than the blank concentration or non detect and accepted <br /> The following note applies to 2,4-Dtchlorophenol, bis(2-Chloroethoxy)methane, <br /> 2-Chlorophenol, 2-Nttrophenol <br /> 305 LCS not within Acceptance Range (AR) Data could not be confirmed by <br /> reanalysis Results were reported with client approval <br /> The following note applies to Dtbenzo(a,h)anthracene, Benzo(b)fluoranthene, <br /> Benzo(k)fluoranthene, Dimethylphthalate, Di-n-octylphthalate <br /> 310 LCS above Acceptance Range (AR) Samples which were non detect for this <br /> analyte were accepted <br /> The following note applies to Acenaphthylene, 1,2-Diphenylhydraztne, <br /> Butylbenzylphthalate, N-Nitrosodtphenylanune, Pyrene <br /> 320 LCS not within Acceptance Range (AR) Data was accepted based on the <br /> BS/BSD recovery <br /> The following note applies to 2,4,6-Trichlorophenol, 2,4-Dichlorophenol, <br /> 2-Chlorophenol, 2-Nttrophenol, 3,3'-Dtchlorobenztdine, Hexachlorobenzene, Phenol <br /> 410 Relative Percent Difference (RPD) not within Maximum Allowable Value <br /> (MAV) Data was accepted based on the LCS or CCV recovery <br /> The following note applies to 2,4,6-Trichlorophenol, 2,4-Dtchlorophenol, <br /> bis(2-Chloroethoxy)methane, 2-Chlorophenol, 2-Nttrophenol, 3,3'-Dichlorobenztdtne, <br /> Pentachlorophenol, Dtethylphthalate, Dtmethylphthalate <br /> 435 Sample matrix may be affecting this analyte Data was accepted based on the <br /> LCS or CCV recovery <br /> 5030B 11/30/2004 A233 All preparation quality controls are within established criteria <br /> 625 12/08/2004 A - GM201 All analysts quality controls are within established criteria, except <br /> The following note applies to 3,3'-Dtchlorobenztdtne, Benzidine, Chrysene, Pyrene <br /> 360 CCV above Acceptance Range (AR) Samples which were non detect for this <br /> analyte were accepted <br /> 826013 11/30/2004 A - GM207 All analysts quality controls are within established criteria, except <br /> The following note applies to tert-Butanol <br /> 355 CCV not within Acceptance Range (AR) Results were reported with client <br /> approval <br /> Case narrative continued on next page <br /> STK438223 Case Narrative Page 2 <br />