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NYC-WTC_000211846

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NYC 9/11 Public Portal Document

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

'ace Analytical Method 8290 Laboratory Control Spike Results Tel: 612-607-1700 Fax: 612- 607-6444

Client - ATC

Lab Sample ID SPIKE-DUP-1377 Filename F20416B_03 Matrix WIPE Total Amount Extracted 1 m2 Dilution NA ICAL Date 04/12/2002 Extracted 04/12/2002 CCal Filename(s) F20416B_01 & F20416B_13 Analyzed • 04/17/2002 05:15 Method Blank ID BLANK-1566 Injected By BAL Native Qs Qm % Internal ng's Percent Isomers (ng) (ng) Rec, . Standards Added Recovery 2,3,7,8-TCDF 0.20 0.20 99 2,3,7,8-TCDF-13C 2.00 76 2,3,7,8-TCDD-.13C 2.00 74 1,2,3,7,8-PeCDF-13C 2.00 81 2.3.7.8-TCDD 0.20 0.20 98 2,3,4,7.8-PeCDF-13C 2.00 76 1,2,3,7.8-PeCDD-13C 2.00 82 1,2,3,4,7,8-HxCDF-13C 2.00 101 1.2,3,7,8-PeCDF 1.00 0.96 .96 1,2,3,6,7,8-HxCDF-13C 2.00 65 2,3,4.7,8-PeCDF 1.00 0.97 97 2,3,4.6,7,8-HxCDF-13C 2.00 88 1,2,3,7,8,9-HxCDF-13C 2.00 85 , 1,2.3,4.7,8-HxCDD-13C 2.00 94 1,2,3,7,8-PeCDD 1.00. 0.99 99 1,2,3,6,7.8-HxCDD-13C 2.00 83 1,2,3.4,6,7.8-HpCDF-13C 2,00 77 1,2,3,4,7,8,9-HpCDF-13C 2.00 73 1,2,3,4,7.8-HxCDF 1.00 0.99 99 1,2,3,4,6,7,8-HpCDD-13C 2.00 76 1,2,3,6,7,8-HxCDF 1.00 1.00 100 OCDD-13C 4.00 70 2.3,4,6,7.8-HxCDF 1.00 0.99 99 1.2,3,7,8.9-HxCDF 1.00 0.99 99 1,2,3,4-TCDD-13C 2.00 NA 1,2,3,7,8,9-HxCDD-13C 2.00 NA .

J 1,2,3,4,7,8-HxCDD 1,2,3.6,7.8-HxCDD 1,2,3,7,8,9-HxCDD 1.00 1.00 1.00 1.05 1.05 1.06 105 105 106 2,3,7,8-TCDD-37CI4 0.20 80

1,2,3,4,6,7,8-HpCDF 1.00 1.03 103 1,2,3,4,7,8,9-HpCDF ' 1.00 1.05 105

1,2,3,4,6,7,8-HpCDD 1.00 1.07 107

OCDF 2.00 1.86 93 OCDD 2.00 2.02 101

Qs = Quantity Spiked Qm = Quantity Measured 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.... 02-1055555 :

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

CITY_21MC100_012155566

NYC-WTC_000211846

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