Method 8290 wipe sample results, February 2002

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

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

Client - ATC Client's Sample ID ATC-0214-M894-DX2 Lab Sample ID 103331823 F lename F20307A_09 Injected By MRO Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/14/2002 ICiAL Date 01/24/2002 Received 02/18/2002 CCal Filename(s) F20306B_14 & F20307A_16 Extracted 02/28/2002 Method Blank ID BLANK-1489 Analyzed 03/07/2002 20:45 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 75 Total TCDF 0.020 0.00200 2,3,7,8-TCDD-13C 2.00 66 1,2,3.7,8-PeCDF-13C 2.00 84 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 79 Total TCDD 0.056 0.00200 1,2,3,7,8-PeCDD-13C 2.00 79 1,2,3,4,7,8-HxCDF-13C 2.00 100 1,2.3,7,8-PeCDF ND 0.01000 1,2,3.6,7,8-HxCDF-13C 2.00 66 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 81 Total PeCDF ND 0.01000 1.2,3,7,8,9-HxCDF-13C 2.00 82 1,2,3,4,7,8-HxCDD-13C 2.00 89 1,2,3.7,8-PeCDD 0.013 0.01000 I 1,2,3,6,7,8-HxCDD-13C 2.00 79 Total PeCDD 0.130 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 70 1.2,3,4,7,8,9-HpCDF-13C 2.00 64 1.2.3.4.7,8-HxCDF ND 0.01000 1,2,3,4,6,7.8-HpCDD-13C 2.00 67 1,2.3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 65 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 0.022 0.01000 J 1,2,3,7.8,9-HxCDD-13C 2.00 NA

1,2,3,4.7,8-HxCDD 0.049 0.01000 J 2,3,7,8-TCDD-37CI4 0.20 77 1,2,3,6,7,8-HxCDD 0.014 0.01000 J 1,2,3,7,8,9-HxCDD 0.015 0.01000 J Total HxCDD 0.630 0.01000 1,2,3.4,6,7,8-HpCDF 0.040 0.01000 J Total 2,3,7.8-TCDD 1,2,3,4,7,8,9-HpCDF ND 0.01000 Equivalence; 0.012 ng/m2 Total HpCDF 0.083 0.01000 J (Using ITE Factors)

1.2 3,4,6,7,8-HpCDD 0.250 0.01000 Total HpCDD 0.910 0.01000 OCDF 0.02000 J OCDD 0.02000

LRL = Lower Reporting Limit Com; = Concentration (Totals include 2,3,7,8-substituted isomers) I = Interference EMFC = Estimated Maximum Possible Concentration E = PCOE Interference A = detection Limit based on signal-to-noise measurement S = Saturated signal J = Cioncentration detected is below ttie calibration range ND = Not Detected B = Less than 10 times higher than method blank level NA = Not Applicable P = Flecovery outside of target range NC = Not Calculated Nn = Value obtained from additional analysis • = See Discussion Report No.... 02-1054210

REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, without the written nnnsent nt Pane Anaivtinal

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