PCDD/PCDF lab report, PS234M, April 2002

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Lab Sample ID BLANK-1552 Matrix WIPE Filename U20408_10 Dilution NA Total Amount Extracted 1 m2 Extracted 04/03/2002 I CAL Date 03/25/2002 Analyzed 04/08/2002 21:28 CCal Filename(s) U20408_05 & U20408_20 Injected By BAL

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 77 Total TCDF ND 0.00200 2,3,7,8-TCDD-13C 2.00 68 1,2,3,7,8-PeCDF-13C 2.00 83 2,3,7,8-TCDD ND 0.00200 2,3,4.7,8-PeCDF-13C 2.00 84 Total TCDD 0.0032 0.00200 J 1,2,3,7,8-PeCDD-13C 2.00 78 1,2,3,4,7,8-HxCDF-13C 2.00 103 '1 1,2,3,7.8-PeCDF 2,3,4,7,8-PeCDF ND ND 0.01000 0.01000 1,2,3,6,7,8-HxCDF-13C 2,3,4,6,7.8-HxCDF-13C 2.00 2.00 96 90 Total PeCDF ND 0.01000 1,2,3,7,8,9-HxCDF-13C 2.00 83 1,2,3,4,7,8-HxCDD-13C 2.00 100 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,6.7.8-HxCDD-13C 2.00 91 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 91 1,2,3,4,7,8,9-HpCDF-13C 2.00 82 1,2,3.4,7,8-HxCDF ND 0.01000 1,2,3,4,6.7,8-HpCDD-13C 2.00 83 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 79 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 80 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 j 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: 0.00 ng/m2

J Total HpCDF

1,2.3,4.6,7,8-HpCDD Total HpCDD ND

ND ND 0.01000 0.01000 0.01000 (Using ITE Factors)

OCDF ND 0.02000 OCDD ND 0.02000

Cone = Concentration (Totals include 2,3,7,8-substituted isomers). I = Interference EMPC = Estimated Maximum Possible Concentration E = PCDE Interference LRL = Lower Reporting Limit ND = Not Detected . J = Concentration detected is below the calibration range NA = Not Applicable P = Recovery outside of target range NC = Not Calculated A = Detection Limit based on signal-to-noise measurement * = See Discussion

Report No.... 02-1055552

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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