PCDD/PCDF lab report, PS234M, April 2002

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Client - ATC Client's Sample ID ATC-0315-234M-DX1 Lab Sample ID 103399192 Filename U20405B_11 Injected By CVS Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 03/15/2002 ICAL Date 03/25/2002 Received 03/19/2002 CCal Filename(s) U20405A_16 & U20405B_16 Extracted 04/01/2002 Method Blank ID BLANK-1546 Analyzed 04/06/2002 07:31 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF —- 0.0037 0.0053 lA 2,3.7,8-TCDF-13C 2.00 59 Total TCDF 0.035 —- 0.0020 2,3,7,8-TCDD-13C 2.00 54 1,2,3,7,8-PeCDF-13C 2.00 64 2,3,7.8-TCDD ND 0.0051 A 2,3,4,7,8-PeCDF-13C 2.00 70 Total TCDD 0.077 0.0020 1,2,3,7,8-PeCDD-13C 2.00 68 1,2,3,4,7,8-HxCDF-13C 2.00 65 1,2,3,7.8-PeCDF ND 0.0100 1,2,3,6,7,8-HxCDF-13C 2.00 68 2,3,4,7,8-PeCDF ND 0.0100 2,3,4,6,7,8-HxCDF-13C 2.00 65 Total PeCDF 0.010 0.0100 J 1,2,3,7,8,9'HxCDF-13C 2.00 59 1.2,3,4,7,8-HxCDD-13C 2.00 72 1,2,3,7,8-PeCDD ND 0.0100 1,2,3,6,7,8-HxCDD-13C 2.00 55 Total PeCDD 0.019 0.0100 J 1,2,3,4,6,7,8-HpCDF-13C 2.00 64 1,2,3,4,7,8,9-HpCDF-13C 2.00 64 1,2,3,4,7,8-HxCDF ND 0.0100 1,2.3,4,6,7,8-HpCDD-13C 2.00 73 1,2,3,6,7,8-HxCDF ND 0.0100 OCDD-13C 4.00 54 2,3,4,6,7,8-HxCDF ND 0.0100 1,2,3,7,8,9-HxCDF ND 0.0100 1.2,3,4-TCDD-13C 2.00 NA Total HxCDF ND 0.0100 1,2,3,7,8,9-HxCDD-13C 2.00 NA

1,2,3,4,7,8-HxCDD ND 0.0100 2,3,7,8-TCDD-37CI4 0.20 65 1,2,3,6,7,8-HxCDD ND 0.0100 1,2,3,7,8,9-HxCDD ND 0.0100 Total HxCDD ND 0.0100

1,2,3,4,6,7,8-HpCDF 0.010 0.0100 J Total 2,3,7,8-TCDD 1.2,3,4,7,8,9-HpCDF ND 0.0100 Equivalence: 0.0010 ng/m2 Total HpCDF 0.026 0.0100 J (Using ITE Factors)

1,2,3,4,6,7,8-HpCDD 0.042 0.0100 JA Total HpCDD 0.092 0.0100

OCDF ND 0.0200 OCDD 0.520 0.0290 A

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.... 02-1055252

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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