Lab report for wipe sample analysis, Nov 2001

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

we Analytical__________ Method 8290 Analysis Results Tel; 612-607-1700 Fax; 612- 607-6444

Client - ATC Client's Sample ID ATC-1120-STY-DX3 Lab Sample ID 103162814 Filename F11201A_17 Injected By BAL Total Amount Extracted 1 Sample Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 11/20/2001 ICAL Date 11/19/2001 Received 11/21/2001 . CCal Filename(s) F11201 A_04 & Fl 1201 A_20 Extracted 11/27/2001 Method Blank ID BLANK-1344 Analyzed 12/02/2001 06:45 Native Cone EWIPC LRL Internal ng's Percent Isomers ng/S ng/S ng/S Standards Added Recovery 2,3,7,8-TCDF 2,3,7,8-TCDF-13C 2.00 61 3 Total TCDF

2,3,7.8-TCDD 0.0095 0.2200

ND 0.00200 J 0.00200

0.00200 2,3.7,8-TCDD-13C 1,2,3,7,8-PeCDF-13C 2,3,4,7,8-PeCDF-13C 2.00 2.00 2.00 66 57 57 n Total TCDD 0.3100 0.00200 1.2,3,7,8-PeCDD-13C 1,2,3,4,7,8-HxCDF-13C 2.00 2.00 63 89 1,2,3.7,8-PeCDF 0.0130 0.01000 J 1,2,3,6,7,8-HxCDF-13C 2.00 77 2,3,4,7,8-PeCDF 0.0180 0.01000 J 2,3.4,6,7,8-HxCDF-13C 2.00 84 Total PeCDF 0.1700 0.01000 1,2,3,7,8,9-HxCDF-13C 2.00 80 1,2,3,4,7,8-HxCDD-13C 2.00 73 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6,7.8-HxCDD-13C 2.00 86 Total PeCDD 0.3100 0.01000 1,2,3.4,6,7,8-HpCDF-13C 2.00 66 1,2.3,4,7,8,9-HpCDF-13C 2.00 56 1,2,3,4,7.8-HxCDF 0.0190 0.01000 J 1,2,3,4,6,7,8-HpCDD-13C 2.00 59 1,2.3,6,7,8-HxCDF 0.0150 0.01000 J OCDD-13C 4.00 43 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 TotalHxCDF 0.1600 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 68 1,2,3,6,7,8-HxCDD 0.0170 0.01000 J I 1,2,3,7,8,9-HxCDD Total HxCDD 0.0100 0.3700 0.01000 J 0.01000

1,2,3,4,6.7,8-HpCDF 0.0820 0.01000 Total 2,3,7.8-TCDD 1,2,3,4,7,8,9-HpCDF 0.0110 0.01000 J Equivalence; 0.020 ng/S Total HpCDF 0.0930 0.01000 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.1400 0.01000 B Total HpCDD 0.2100 0.01000 B OCDF 0.0800 0.02000 J OCDD 0.7700 0.02000 B

LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,6-substrtuted 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.... 01-1051376

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

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