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-0214-234M-DX3 Lab Sample ID 103331807 Filename U20304A_08 Injected By CVS Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/14/2002 ICAL Date 02/26/2002 Received 02/18/2002 CCal Filename(s) U20304A_03 & U20304A_18 Extracted 02/25/2002 Method Blank ID BLANK-1486 Analyzed 03/04/2002 20:22

Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7,8-TCDF ND 0.00200 2,3,7,8-TCDF-13C 2.00 98 Total TCDF 0.0024 0.00200 J 2.3,7,8-TCDD-13C 2.00 85 1,2,3,7,8-PeCDF-13C 2.00 78 * 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 77 ‘ Total TCDD 0.0046 0.00200 J 1.2,3,7,8-PeCDD-13C 2.00 73 1,2,3,4,7,8-HxCDF-13C 2.00 110 1.2,3,7,8-PeCDF ND 0.01000 1,2.3,6,7,8-HxCDF-13C 2.00 83 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 93 Total PeCDF ND 0.01000 1,2.3,7.8,9-HxCDF-13C 2.00 102 1,2,3,4,7,8-HxCDD-13C 2.00 76 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6.7,8-HxCDD-13C 2.00 87 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 81 1,2,3,4,7,8,9-HpCDF-13C 2.00 83 1,2,3.4,7,8-HxCDF ND 0.01000 1,2,3,4,6,7,8-HpCDD-13C 2.00 91 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 77 2,3.4.6,7,8-HxCDF ND 0.01000 1,2,3,7,8,9-HxCDF ND 0.01000 1,2,3,4-TCDD-13C 2.00 NA Total HxCDF ND 0.01000 1.2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDD ND 0.01000 2.3,7,8-TCDD-37CI4 0.20 53 1,2,3,6,7,8-HxCDD ND 0.01000 1,2,3,7,8,9-HxCDD ND 0.01000 Total HxCDD ND 0.01000

1,2,3.4,6,7,8-HpCDF ND 0.01000 Total 2,3,7,8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.01000 Equivalence; 0.000075 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors)

1,2,3.4,6,7,8-HpCDD ND 0.01000 Total HpCDD ND 0.01000

OCDF ND 0.02000 OCDD 0.0750 0.02000 J 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.... 02-1054209

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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