Appendix B laboratory analysis report, confidential

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Lab Sample ID Spike-1634 Filename U20513A_03 Matrix WIPE Total Amount Extractesd 1 m2 Dilution NA ICAL Date 04/16/2002 Extracted 05/10/2002 CCal Filename(s) U20513A_02 & U20513A_17 Analyzed 05/13/2002 13:58 Method Blank ID BLANK-1616 Injected By CMP i ng's Percent Native Qs Qm % Internal Isomers (ng) (ng) Rec. Standards Added Recovery 2,3,7,8-TCDF 0.20 0.22 109 2,3,7,8-TCDF-13C 2.00 47 2,3,7,8-TCDD-13C 2.00 52 1,2,3,7,8-PeCDF-13C 2.00 58 2,3,7,8-TCDD 0.20 0.20 98 2,3,4,7,8-PeCDF-13C 2.00 59 ! 1,2,3,7,8-PeCDD-13C 2.00 55 , 3 1,2,3,4,7,8-HxCDF-13C 2.00 72 1,2,3,7,8-PeCDF 1.00 1.04 104 1,2,3.6,7,8-HxCDF-13C 2.00 66 2,3,4,7,8-PeCDF 1.00 1.06 106 2,3,4,6,7,8-HxCDF-13C 2.00 69 1,2,3,7,8,9-HXCDF-13C 2.00 74 j 1,2,3,4.7,8-HxCDD-13C 2.00 78 1,2,3,7,8-PeCDD 1.00 1.08 108 1,2,3,6,7.8-HxCDD-13C 2.00 67 1,2,3,4,6,7,8-HpCDF-13C 2.00 77 1,2,3,4,7,B,9-HpCDF-13C 2.00 87 1,2,3,4,7,8-HxCDF 1.00 1.05 105 1,2,3,4,6,7,8-HpCDD-13C 2.00 88 1,2,3,6,7,8-HxCDF 1.00 1.09 109 OCDD-13C 4.00 91 2,3,4,6,7,8-HxCDF 1.00 1.04 104 1.2,3,7.8,9~HxCDF 1.00 1.04 104 1,2,3,4-TCDD-13C 2.00 NA 1,2,3.7,8,9-HxCDD-13C 2.00 NA 1,2,3,4,7,8-HxCDD 1.00 1.10 110 2,3,7,8-TCDD-37CI4 0.20 60 1 1,2,3,6,7,8-HxCDD 1.00 1.09 109 1,2,3,7,8,9-HxCDD 1.00 1.14 114

1,2,3,4,6,7,8-HpCDF 1.00 1.05 105 J 1,2,3,4,7,8,9-HpCDF 1.00 1.07 107

1 1,2,3,4,6,7,8-HpCDD -1.00 1.04 104

OCDF 2.00 2.18 109 DCDD 2.00 2.12 106

(3s = Quantity Spiked Qm = Quantity Measured Flee. = Recovery (Expressed as Percent) F‘ = Recovery outside ot target range = Background subtracted value Nn = Value obtained from additional analysis NA = Not Applicable • = See Discussion Report No.... 02-1057195

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

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