Method 8290 analysis results for wipe samples, Feb 2002

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FEB-2B-02 13!2O FROM-PACE ANALYTICAL 612-607-6444 T-765 P.05/05 F-351 1700 Elm Street - Suite 200

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Tel: 612-607-1700 Fax- 61?- 607-644.4 Method 8290 Analysis Results Client - ATC Client's Sample ID ATC-0206-STY-DX4 Lab Sample ID 103311817 Filename U20226B_11 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/0B/2002 ICAL Date 02/26/2002 Received 02/08/2002 CCal Fil©nams(s) U20226A^10 & U2022eB_15 Extracted 02/19/2002 Method Blank ID BLANK-1476 Analyzed 02/27/2002 02:09 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7.8-TCDF ND 0.0029 A 2,3,7,8-TCDF-13C 2.00 72 Total TCDF ND 0.0020 2,3,7.8-TCDD-13C 2.00 68 1.2.3.7.8-PeCDF-13C 2.00 78 2,3,7,8-TCDD ND 0.0033 A 2,3,4.7.8-PeCDF-13C 2.00 81 Total TCDD ND 0.0020 1,2.3,7,8-PeCDD-13C 2.00 78 1,2.3.4,7,8-HxCDF-13C 2.00 93 1,2,3,7,8-PeCDF ND 0.0100 1,2.3,6,7,8-HXCDF-13C 2.00 78 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6.7.8-HxCDF-13C 2.00 75 Total PeCDF ND 0.0100 1,2,3,7,8,9-HXCDF-13C 2.00 85 1,2,3.4.7.8-HxCDD-13C 2.00 64 1.2,3.7,a-PeCDD ND 0.0100 1,2,3,6,7,8-HXCDD-13C 2.00 73 Total PeCDD ND 0.0100 1.2,3,4,6,7,8-HpCDF-13C 2.00 60 1,2,3.4,7,8.9-HpCDF-13C 2.00 57 1.2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,G,7,a-HpCDD-13C 2.00 53 1,2.3,6.7,8-HxCDF ND 0.0100 OCDD-13C 4.00 49 2,3,4,6,7,8-HxCDF ND 0.0100 1,2,3.7,S.9-HxCDF ND 0.0100 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF ND 0.0100 l,2.3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,4.7,8-HxCDD ND 0.0100 2.3.7.8-TCDD-37C14 0.20 80 1,2.3,6,7,B-HxCDD ND 0.0100 1 ,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD ND 0.0100

1,2.3,4,6,7,8-HpCDF ND 0.0100 Total 2,3,7,B-TCDD 1.2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.00 ng/m2 Total HpCDF ND 0.0100 (Using ITE Factors)

1,2.3,4,6,7.8-HpCDD ND 0.0100 Total HpCDD ND 0.0100

OCDF ND 0.0200 OCDD ND 0.0200 lRl = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,8-substliuted isomers) I - Interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference A = Detection Limit based on sfemal-tD-noise measurement S = Saturatea signal 1 J = Concentration detected is below the calibration range B = Less than 10 times higher than method blank level ND = Not Detected NA = Not Applicable P = Recovery outside ol target range NC = Not Calculated Nn = Value Obtained from additional analysis • = See Discussion Report No..,..02-1053891

REPORT OF LABORATORY ANALYSIS This report shall not ba reproduced, except in full, without the written consent of Pace Analytical Services, Inc.

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