NYC-WTC_000228425

NYC 9/11 Public Portal Document Paca Analytieal Servicts, Ine. 1700 Elm Street, Suite 200 ^ace Analytical' Minneapolis. MN 55414 Phone: 612.607.1700 itnnii.paetlabg.com Fax: 612.607.6444 TABLE 5. 2,3,7,8-TCDD Equivalency Factors (TEFs) for the Polychlorinated Dibenzo-p-dioxins and Dibenzofurans

Number Compound(s) TEF

1 2,3,7,8-TCDD 1.00 2 1,2,3,7,8-PeCDD 0.50 3 1,2,3,6,7,8-HxCDD 0.1 4 1,2,3,7,8,9-HxCDD 0.1 5 1,2,3,4,7,8-HxCDD 0.1 6 1,2,3,4,6,7,8-HpCDD 0.01 7 OCDD 0.001 8 * Total - TCDD 0.0 9 * Total - PeCDD 0.0 10 * Total - HxCDD 0.0 11 * Total - HpCDD 0.0

12 2,3,7,8-TCDF 0.10 13 1,2,3,7,8-PeCDF 0.05 14 2,3,4,7,8-PeCDF 0.5 15 1,2,3,6.7,8-HxCDF 0.1 16 1,2,3,7,8,9-HxCDF 0.1 17 1,2,3,4,7,8-HxCDF 0.1 18 2,3,4,6,7,8-HxCDF 0.1 19 1,2,3,4,6,7,8-HpCDF 0.01 20 1,2,3,4,7,8,9-HpCDF 0.01 21 OCDF 0.001 22 * Total - TCDF 0.0 23 * Total - PeCDF 0.0 24 * Total - HxCDF 0.0 - 25 * Total - HpCDF 0.0

*Excluding the 2,3,7,8-substituted congeners.

Reference: 1989 ITEFs

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

■nehc' CITY_21MC1OO_OO29OO517

NYC-WTC_000228438