NYC-WTC_000219094

NYC 9/11 Public Portal Document

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

weAnaIvticar__________ Method 8290 Laboratory Control Spike Results Tel: 612-607-1700 Fax- 612- 607-6444

Client - ATC

Lab Sample ID SPIKE-1394 Filename F20103A_03 Matrix WIPE B Total Amount Extracted ICAL Date 1 Sample 01/02/2002 Dilution Extracted NA 12/23/2001 CCal Filename(s) F20102A_22 & F20103B_01 Analyzed 01/03/2002 09:05 Method Blank ID BLANK-1389 injected By BAL

Native Qs Qm % Internal ng's Percent Isomers (ng) (ng) Rec. Standards Added Recovery

2,3,7,8-TCDF 0.20 0.22 110 2,3,7,8-TCDF-13C 2.00 71 2,3,7,8-TCDD-13C 2.00 72 1,2,3,7,8-PeCDF-13C 2.00 81 110 2,3,4,7,8-PeCDF-13C 2.00 78 3 2,3,7,8-TCDD 0.20 0.22 1,2,3,7,8-PeCDD-13C 2.00 84 1,2,3,4,7.8-HxCDF-13C 2.00 83 1,2,3,7,8-PeCDF 1.00 1.08 108 1,2,3,6,7,8-HxCDF-13C • 2.00 77 2,3,4,7,8-PeCDF 1.00 1.08 108 2,3,4,6,7,8-HxCDF-13C 2.00 79 s 1,2,3,7,8,9-HxCDF-13C 2.00 87 1,2,3,4,7,8-HxCDD-13C 2.00 104 1,2,3.7,8-PeCDD 1.00 1.11 111 1,2,3,6,7,8-HxCDD-13C , 2.00 79 1,2,3,4,6,7,8-HpCDF-13C 2.00 89 ■J 1,2,3,4,7,8,9-HpCDF-13C 2.00 90 1,2,3,4,7,8-HxCDF 1.00 1.08 108 1,2.3.4,6,7,8-HpCDD-13C 2.00 99 1,2,3,6,7,8-HxCDF 1.00 1.13 113 OCDD-13C 4.00 89 2,3,4,6,7,8-HxCDF 1.00 1.12 112 1,2,3,7,8,9-HxCDF 1.00 1.10 110 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 1.15 115 2,3,7.8-TCDD-37CI4 0.20 77 £ 1,2,3,6,7,8-HxCDD 1.00 1.11 111 1,2,3.7,8,9-HxCDD 1.00 1.09 109

a 1,2,3,4,6,7.8-HpCDF 1,2,3,4,7,8,9-HpCDF 1.00 1.00 1.15 1.13 115 113

1,2,3,4,6,7,8-HpCDD 1.00 1.09 109

a OCDF OCDD

Qs = Quantity Spiked 2.00 2.00 2.23 2.17 111 109

Qm = Quantity Measured :J Rec. = Recovery (Expressed as Percent) P = Recovery outside of target range X = Background subtracted value Nn = Value obtained from additional analysis NA = Not Applicable ’ = See Discussion Report No.... 01-1052540

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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NYC-WTC_000219108