Method 8290 wipe sample results, February 2002

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'^ace Analytical _______ Tel: 612-S07-1700 Fax: 612- S07-B444 Method 8290 Analysis Results Client - ATC Client's Sample ID ATC-0214-M894-DX1 Lab Sample ID 103331815 Filename U20306A_06 Injected By CVS "otai Amount Extracted 1 m2 Matrix WIPE % Moisture NA Dilution NA Dry Weight Extracted NA Collected 02/14/2002 ICAL Date 03/05/2002 Received 02/18/2002 CCal Filename(s) U20305B_16 & U20306A_17 Extracted 02/28/2002 Method Blank ID BLANK-1489 Analyzed 03/06/2002 19:13 Native Cone EMPC LRL Internal ng's Percent Isomers ng/m2 ng/m2 ng/m2 Standards Added Recovery 2,3,7,8-TCDF 0.0039 0.00220 JA 2,3,7,8-TCDF-13C 2.00 76 Total TCDF 0.0670 0.00200 2,3,7,8-TCDD-13C 2.00 70 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 65 Total TCDD 0.0930 0.00200 1,2,3,7,8-PeCDD-13C 2.00 71 1,2,3,4,7,8-HxCDF-13C 2.00 90 1,2,3,7,8-PeCDF ND 0.01000 1,2.3,6,7,8-HxCDF-13C 2.00 92 2,3,4,7,8-PeCDF ND 0.01000 2,3,4,6,7,8-HxCDF-13C 2.00 90 Total PeCDF ND 0.01000 1,2,3,7,8,9-HxCDF-13C 2.00 87 1.2,3,4,7,8-HxCDD-13C 2.00 94 1,2,3,7,8-PeCDD ND 0.01000 1,2,3.6,7,8-HxCDD-13C 2.00 81 Total PeCDD ND 0.01000 1,2,3,4,6,7,8-HpCDF-13C 2.00 90 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 87 1,2,3,6,7,8-HxCDF ND 0.01000 OCDD-13C 4.00 76 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 73 1,2,3,6,7,8-HxCDD ND 0.01000 1,2,3,7,8,9-HxCDD ND 0.01000 Total HxCDD 0.0110 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: 0.00060 ng/m2 Total HpCDF ND 0.01000 (Using ITE Factors)

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

OCDF ND 0.02000 OCDD 0.0710 0.02000 BJ

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 signa -to-ncise measurement S = Saturated signal J = Concentration detected is belo?; 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.... 02-1054210

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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