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May 6, 2009 Lab ID : STK0933389 Valley Industries Customer : 3-11146 Organic QC 04/20/2009:204014 All preparation quality controls are within established criteria. 04/25/2009:205202 All analysis quality controls are within established criteria,except: 608 The following note applies to Endosulfan Sulfate: 360 CCV above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 04/21/2009:205022 All analysis quality controls are within established criteria,except: 624 The following note applies to Toluene: 360 CCV above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 04/21/2009:204107 All preparation quality controls are within established criteria,except: The following note applies to 1,2-Dichlorobenzene, 1,3-Dichlorobenzene,Toluene: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. The following note applies to 1,2-Dichloroethane(EDC), 1,2-Dichloropropane,Acrylonitrile, Dibromochloromethane,Toluene: 410 Relative Percent Difference(RPD)not within Maximum Allowable Value(MAV).Data was accepted based on the LCS or CCV recover . 04/29/2009:205435 All analysis quality controls are within established criteria,except: 625 The following note applies to 4-Nitrophenol,3,3-Dichlorobenzidine,Pentachlorophenol, Hexachlorocyclopentadiene: 360 CCV above Acceptance Range(AR).Samples which were non detect for this analyte were accepted. 04/22/2009:204106 All preparation quality controls are within established criteria,except: The following note applies to 1,4-Dichlorobenzene,2,4,6-Trichlorophenol,2,4-Dinitrophenol,2- Nitrophenol,4,6-Dinitro-2-methylphenol,4-Nitrophenol,: 435 Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. The following note applies to Anthracene,Dibenzo(a,h)anthracene,Benzo(a)pyrene,Benzo(b)fluoranthene, Benzo(g,h,i)perylene,Benzo(k)fluoranthene,Ch: 310 LCS above Acceptance Range(AR). Sam les which were non detect for this analyte were accepted. Inorganic - Wet Chemistry QC 4500CNCE 04/24/2009:205191 All analysis quality controls are within established criteria. 4500-H B 04/16/2009:310518 All preparation quality controls are within established criteria. 450011B 04/16/2009:310747 All analysis quality controls are within established criteria. 9010B 04/21/2009:204095 All preparation quality controls are within established criteria. Certification:: I certify that this data package is in compliance with NELAC standards, both technically and for completeness, except for any conditions listed above. Release of the data contained in this data package is authorized by the Laboratory Director or his designee, as verified by the following electronic signature. KD:DMB thebdyw by emy A.omo.mo.as. �: Approved By Kelly A.Dunnahoo,B.S. ri �. r�xawosas Page 2 of 24