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

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FEB-28-02 08:22 FROM-PACE ANALYTICAL EI2-B07-B444 T-760 P OB/OE F-33B 1700 Elm Street - Suite 200 Minneapolis, MN 55414

/ /^2^ceAna/\4/car IMethod 8290 Analysis Results Tel: 612-607-1700 Fax' 61 607'6444

Client - ATC Client's Sample ID ATC-0205-234M-DX3 Lab Sample ID 103307211 Filename F20222A_06 Injected By MASB Total Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted , NA Collected 02/05/2002 ICAL Date 01/24/2002 Received 02/06/2002 CCal Filename(s) “20222A._ 01 & F2C222A '4 Extracted 02/18/2002 Method Blank ID BLANK-1/71 Analyzed 02/22/2002 12:22 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 63 Total TCDF ND —- 0.00200 2,3,7,8-TCDD-13C 2.00 56 1.2,3.7,8-PeCDF-13C 2.00 70 2,3,7,8-TCDD ND 0.00200 2.3,4,7,8-PeCDF-13C 2.00 70 Total TCDD ND 0.00200 1,2,3,7,8-PeCDD-13C 2.00 67 1.2,3.4,7.8-HxCDF-13C 2.00 82 1,2,3.7,8-PeCDF ND 0.01000 1,2,3,6.7.8-HxCDF-13C 2.00 72 2,3,4,7.8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 75 Total PeCDF ND 0.01000 1,2,3,7,8.9-HxCDF-13C 2.00 69 1,2,3,4.7.8-HXCDD-13C 2.00 78 1,2,3,7.8-PeCDD ND 0.01000 1,2,3,6.7,8-HxCDD-l 3C 2.00 74 Total PeCDD ND 0.01000 1,2,3,4,6,7.8-HpCDF-13C 2.00 74 1,2,3,4.7,8,9-HpCDF-13C 2.00 67 1,2.3,4,7,8-HxCDF ND 0.01000 1,2.3,4,6,7,8-HpCDD-13C 2.00 80 1.2.3.6,7.8-HxCDF ND 0.01000 OCDD'13C 4.00 45 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 65 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: 0.00 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors)

1.2,3,4,6,7,8-HpCDD ND 0.01000 Total HpCDD ND 0.01000

OCDF ND 0.02000 OCDD ND 0.02000

LRL = Lower Reporting Limit Cone = Concentration (Totals include 2,3,7,8-substituted isomars) 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.... 02-1053790

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

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