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<br /> October 21, 2004 Lab ID STK436814
<br /> Customer 3014626
<br /> Micheline Doyle Kipf
<br /> Quality Control.
<br /> Inorganic - Wet Chemistry QC
<br /> 4500-H B 09/30/2004 5346 All preparation quality controls are within established criteria
<br /> 09/30/2004 S - PH301 All analysis quality controls are within established criteria
<br /> Organic QC
<br /> 3520C 10/06/2004 A225 All preparation quality controls are within established criteria
<br /> 5030B 10/07/2004A233 All preparation quality controls are within established criteria
<br /> 624 10107/2004A224 All preparation quality controls are within established criteria, except
<br /> The following note applies to 1,1,1-Trichloroethane, 1,1-Dichloroethane,
<br /> 1,1-Dichloroethylene, 1,2-Dichloroethane, Bromoform, Bromodichloromethane,
<br /> Benzene, Carbon Tetrachloride, Carbon Disulfide, Chloroform, Trichloroethylene,
<br /> EthylBenzene,trans-l,3-Dichloropropene, cis-1,3-Dichloropropene, Toluene, Styrene,
<br /> Trichlorofluoromethane
<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 1,1,2,2-Tetrachloroethane, 1,1,2-Trichloroethane,
<br /> 401,2-Dichlorobenzene, 1,2-Dichloropropane, 1,3-Dichlorobenzene,
<br /> 1,4-Dichlorobenzene, 2-Hexanone, Acetone, Carbon Disulfide,
<br /> Trtchlorofluoromethane, Chlorobenzenc,EthylToluene, 4-Methyl-2-pentanone (MIBK),
<br /> 4-Methyl-2-pentanone (MIBK), 2-Butanone (MEK), 2-Butanone (MEK), Benzene
<br /> 435 Sample matrix may be affecting this analyte Data was accepted based on the
<br /> LCS or CCV recovery
<br /> 10/07/2004 A - GM205 All analysis quality controls are within established criteria, except
<br /> The following note applies to 1,1,1-Trichloroethane, 1,2-Dichloroethane, Carbon
<br /> Tetrachloride, Trichlorofluoromethane
<br /> 360 CCV above Acceptance Range (AR) Samples which were non detect for this
<br /> analyte were accepted
<br /> 625 10/13/2004 A - GM201 All analysis quality controls are within established criteria
<br /> The following note applies to Phenol
<br /> 360 CCV above Acceptance Range (AR) Samples which were non detect for this
<br /> analyte were accepted
<br /> 8260B 10/07/2004 A - GM207 All analysis quality controls are within established criteria
<br /> Case narrative continued on next page
<br /> STK436814 Case Narrative Page 2
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