Method 8290 wipe sample results, February 2002

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

I ^ace Analytical___________ Method 8290 Analysis Results Tel: 612-607-1700 Fay S'*2- 607-54.4.4

Client - ATC I Client's Sample ID Lab Sample ID ATC-0214-M894-DX3 103331831 Filename U20306A_07 1 Injected By Total Amount Extracted CVS 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/14/2002 I ICAL Date CCal Filename(s) 03/05/2002 U20305B_16 & U20306A_17 Received Extracted 02/18/2002 02/28/2002 Method Blank ID BLANK-1489 Analyzed 03/06/2002 20:02 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 67 I Total TCDF 0.0066 0.00200 J 2,3,7,8-TCDD-13C 1,2,3,7,8-PeCDF-13C 2.00 2.00 65 78 2,3,7,8-TCDD ND 0.00200 2,3,4,7,8-PeCDF-13C 2.00 65 Total TCDD 0.0049 0.00200 J 1,2,3,7,8-PeCDD-13C 2.00 72 I 1,2,3,7,8-PeCDF ND 0.01000 1,2,3,4,7,8-HxCDF-13C 1.2,3,6,7,8-HxCDF-13C 2.00 2.00 86 75 2.3.4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 77 Total PeCDF ND 0.01000 1,2.3,7,8,9-HxCDF-13C 2.00 74 I 1,2,3,7,8-PeCDD ND 0.01000 1,2,3,4,7,8-HxCDD-13C 1,2.3,6,7,8-HxCDD-13C 2.00 2.00 85 69 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 79 1.2,3.4,7,8,9-HpCDF-13C 2.00 76 I 1,2,3,4,7,8-HxCDF 1,2,3,6,7,8-HxCDF ND ND 0.01000 0.01000 1,2,3,4,6,7,8-HpCDD-13C OCDD-13C 2.00 4.00 77 62 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 I 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 74 1,2,3,6,7.8-HxCDD ND 0.01000 I 1,2,3,7,8,9-HxCDD Total HxCDD ND ND 0.01000 0.01000 1,2,3,4,6,7,8-HpCDF ND 0.01000 Total 2,3,7.8-TCDD I 1,2,3,4,7,8,9-HpCDF Total HpCDF ND ND 0.01000 0.01000 Equivalence: 0.00024 ng/m2 (Using ITE Factors)

1,2.3,4,6,7,8-HpCDD 0.0150 0.01000 J I Total HpCDD 0.0150 0.01000 J

OCDF ND 0.02000 OCDD 0.0920 0.02000 BJ I Cone = Concentration (Totals include 2,3,7,8-substituted isomers) LRL = Lower Reporting Limit I = Interference EMPC = Estimated Maximuin Possible Concentration E = PCDE Interference I A = Detection Limit based on sigiial-to-noise measurement J = Concentration detected is below the calibration range B = Less than 10 times higher than method blank level S = Saturated signal ND = Not Detected NA = Not Applicable P = Recovery outside of target range NC = Not Calculated

I Nn = Value obtained from additional analysis * = See Discussion Report No.... 02-1054210

I REPORT OF LABORATORY ANALYSIS This report shall not be reproduced, except in full, ■ without the written ccnsent of Pace Analytical Services, Inc. CONFIDENTIAL, CITY_21MC100_003432115 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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