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

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Client - ATC Client's Sample ID ATC-0214-234M-DX1 Lab Sample ID 103331781 Filename U20302A_07 Injected By BAL Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/14/2002 I CAL Date 02/26/2002 Received 02/18/2002 CCal Filename(s) U20302A_01 & U20302A_17 Extracted 02/25/2002 Method Blank ID BLANK-1486 Analyzed 03/02/2002 21:26 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery

2,3,7,8-TCDF 0.0035 0.00200 J 2,3,7,8-TCDF-13C 2.00 89 Total TCDF 0.0410 0.00200 2.3,7,8-TCDD-13C 2.00 78 1,2,3,7,8-PeCDF-13C 2.00 90 2,3,7,8-TCDD ND 0.00240 A 2,3,4,7,8-PeCDF-13C 2.00 85 Total TCDD 0.0250 0.00200 1,2,3,7,8-PeCDD-13C 2.00 80 1,2,3,4,7,8-HxCDF-13C 2.00 95 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 78 Total PeCDF 0.0120 0.01000 J 1,2,3,7,8,9-HxCDF-13C 2.00 95 1,2,3,4,7,8-HxCDD-13C 2.00 59 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6,7,8-HxCDD-13C 2.00 76 Total PeCDD ND 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 87 1,2,3.4,7,8-HxCDF ND 0.01000 1,2.3,4,6,7,8-HpCDD-13C 2.00 68 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 81 * 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 48 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: 0.00055 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.012 0.01000 I Total HpCDD 0.0140 0.01000 J

OCDF ND 0.02000 OCDD 0.1900 0.02000

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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