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NYC-WTC_000223243

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NYC 9/11 Public Portal Document

Pace Analytical Services, Inc. 1700 Bm 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-1607 Filename F20429A_02 Matrix WIPE Total Amount Extracted 1 m2 Dilution NA tCAL Date 04/12/2002 Extracted 04/24/2002 CCal Filename{s) F20429A_01 & F20429A_15 Analyzed 04/29/2002 11:04 Method Blank ID BLANK-1592 Injected By BAL 11 Native Qs Qm % Internal ng's Percent J Isomers (ng) (ng) Rec. Standards Added Recovery 2,3,7.8-TCDF 0.20 0.18 90 2,3,7,8-TCDF-13C 2.00 74 2.3,7,8-TCDD-13C 2.00 77 1,2,3,7.8-PeCDF-13C 2.00 85 2,3,7,8-TCDD 0.20 0.17 87 2,3.4,7,8-PeCDF-13C 2.00 79 1,2.3.7,8-PeCDD-13C 2.00 83 1,2,3,4.7,8-HxCDF-13C 2.00 96 1,2,3,7,8-PeCDF 1.00 0.90 90 1,2,3,6,7,8-HxCDF-13C 2.00 74 2,3,4,7,8-PeCDF 1.00 0.91 91 2.3,4,6.7,8-HxCDF-13C 2.00 81 1,2,3.7,8,9-HxCDF-13C 2.00 81 1.2,3,4,7,8-HxCDD-13C 2.00 95 1,2,3,7,8-PaCDD 1.00 0.93 93 1,2.3,6.7,8-HxCDD-13C 2.00 85 1.2.3.4.6,7,8-HpCDF-13C 2.00 85 1,2,3,4,7,8,9-HpCDF-13C 2.00 77 1,2,3,4.7,8-HxCDF 1.00 0.86 86 1,2,3,4,6,7.8-HpCDD-13C 2.00 94 1,2,3,6,7,8-HxCDF 1.00 0.93 93 OCDD-13C 4.00 67 2,3.4,6.7.8-HxCDF 1.00 0.91 91 1,2,3,7,8,9-HxCDF 1.00 0.90 90 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 0.92 92 2,3,7,B-TCDD-37CI4 0.20 91 1,2,3,6,7,8-HxCDD 1.00 0.95 95 1,2.3,7,8.9-HxCDD 1.00 0.92 92

1,2,3,4,6,7.8-HpCDF 1.00 0.97 97 1,2.3.4.7.8.9-HpCDF 1.00 0.92 92

1.2,3.4,6.7.8-HpCDD 1.00 0.91 91

OCDF 2.00 1.55 77 OCDD 2.00 2.01 101

Qs s Quantity Spiked Qm s Quantity Measured Rec.» Recovery (Expressed as Percent) P s Recovery outside of target range X = Background subtracted value Nn s Value obtained from additional analysis NA = Not Applicable * = See Discussion Report No.... 02-1056372

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

CITY_21MC100_002889985

NYC-WTC_000223247

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NYC-WTC_000223247Source: NYC Law Department, mirrored locally

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