PCDD/PCDF wipe sample results, PS 234M, Mar 2002

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Pace Analytical Services, Inc. 1700 Elm Street - Suite 200 Minneapolis, MN 55414

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Client - ATC Client's Sample ID ATC-0301-234M-DX-1 Lab Sample ID 103363834 Filename U20320A_16 Injected By CVS Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 03/01/2002 ICAL Date 03/20'2002 Received 03/05/2002 CCai Filename(s) tJ20320A_06 & U20320A_20 Extracted 03/14/2002 Method Blank ID BLANK-1516 Analyzed 03/20/2002 21:32

Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF ND 0.0041 A 2,3,7,8-TCDF-13C 2.00 81 Total TCDF 0.030 0.0020 2,3,7,8-TCDD-13C 2.00 74 1,2,3,7,8-PeCDF-13C 2.00 80 2,3,7,8-TCDD ND 0.0025 A 2,3,4,7,8-PeCDF-13C 2.00 75 Total TCDD 0.038 0.0020 1,2,3,7,8-PeCDD-13C 2.00 70 1,2,3,4,7,8-HxCDF-13C 2.00 124 1,2,3,7,8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 71 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 95 Total PeCDF 0.010 0.0100 J 1,2,3,7,8,9-HxCDF-13C 2.00 100 1,2,3,4,7,8-HxCDD-13C 2.00 98 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 74 Total PeCDD 0.025 0.0100 J 1,2,3,4,6,7,8-HpCDF-13C 2.00 63 1,2,3,4,7,8,9-HpCDF-13C 2.00 58 1,2,3,4,7,8-HxCDF ND 0.0100 1,2,3,4,6,7,8-HpCDD-13C 2.00 74 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 66 * 2,3,4,6,7,8-HxCDP ND 0.0100 1,2,3,7,8,9-HxCDF ND 0.0100 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF 0.013 0.0100 J 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDD ND 0.0100 2,3.7,8-TCDD-37CI4 0.20 79 1,2,3,6,7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD 0.038 0.0100 J

1,2,3,4,6,7,8-HpCDF ND 0.0100 Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.0110 A Equivalence; 0.00051 ng/m2 Total HpCDF ND 0.0100 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.028 0.0100 BJ Total HpCDD 0.028 0.0100 BJ

OCDF ND 0.0200 * OCDD 0.230 0.0200 B LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,8-substituted isomers) I = Interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference A = Detection Limit based on signal-to-noise measurement S = Saturated signal J = Concentration detected is below the calibration range ND = Not Detected B = Less than 10 times higher than method blank level NA = Not Applicable P = Recovery outside of target range NC = Not Calculated Nn = Value obtained from additional analysis * = See Discussion Report No... 02-1054706

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

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