NYC-WTC_000224776

NYC 9/11 Public Portal Document

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

8 yce Analytical8Sg© Labergtooy C®5ii!r@S Spste Tsi: 612-607-1700

Client - ATC ASSOCIATES

Lab Sample ID SPIKE-DUP-1437 Filename F20615A_15 Matrix WIPE Total Amount Extracted 1 m2 Dilution NA ICAL Date 05/04/2002 Extracted 08/10/2002 CCal Filename(s) F20615A_01 & F20615A_16 Analyzed 06/16/2002 02:54 Method Blank ID BL^NK-1661 Injected By BAL

Qs Qm % Imtemal (rag)'® FaresS’S Ssemeira (ng) <ng) Rqc. Added Recoveirv 2,3,7.8-TCDF 0.20 0.21 107 2,3,7,8-TCDF-13C 2.00 76 2,3,7,8-TCDD-13C 2.00 69 1,2,3,7.8-PeCDF-13C 2.00 74 2,3.7,8-TCDD 0.20 0.21 103 2,3,4,7,8-PeCDF-13C 2.00 73 1,2,3,7,8-PeCDD-13C 2.00 69 1,2,3,4,7,8-HxCDF-13C 2.00 98 1,2,3,7.8-PeCDF 1.00 1.07 107 1,2.3,6,7,8-HxCDF-13C 2.00 104 2.3,4,7,8-PeCDF 1.00 1.08 108 2,3,4,6.7,8-HxCDF-13C 2.00 93 1.2,3,7,8,9-HxCDF-13C 2.00 93 1,2,3,4,7,8-HxCDD-13C 2.00 88 1,2,3.7.8-PeCDD 1.00 1.05 105 1,2,3,6,7,8-HxCDD-13C 2.00 85 1,2,3,4,6,7,8-HpCDF-13C 2.00 83 1,2,3,4,7,8,9-HpCDF-13C 2.00 66 1,2.3.4,7,8-HxCDF 1.00 1.02 102 1.2,3.4,6,7,8-HpCDD-13C 2.00 74 1,2.3.6,7,8-HxCDF 1.00 1.05 105 OCDD-13C 4.00 66 2.3.4,6,7.8-HxCDF 1.00 1.07 107 1,2,3,7,8.9-HxCDF 1.00 1.06 106 1,2,3.4-TCDD-13C 2.00 NA 1,2,3.7,8.9-HxGDD-13C 2.00 NA

1.2,3,4,7,8-H)(CDD 1.00 1.12 112 2,3,7,8-TCDD-37CI4 0.20 81 1.2,3,6.7.8-HxCDD 1.00 1.13 113 1.2,3.7,8,9-HxCDD 1.00 1.20 120

1,2,3,4,6,7,8-HpCDF 1.00 1.02 102 1,2,3,4,7,8,9-HpCDF 1.00 1.00 100

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

OCDF 2.00 2.11 105 OCDD 2.00 2.12 106

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.... 02-1058088

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

CITY_21MC100_002894546

NYC-WTC_000224776