NYC-WTC_000233764

NYC 9/11 Public Portal Document

<date> PASC - Certificate of Analysis Page 3 of

R02090951 R02090951 R02090951 R02090951 Unit/I): 06A 07A OSA 09A Lab No.; 060272 02 060273 02 060274 02 060275 02 Sampled: 12-.Sep-2002 12-.Sep-20O2 12-.Sep-2002 12-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurans pg 5.8 <1.7 <1.7 4.8 Total Pentaclilorodibenzofurans <1.5 <1.6 <1.7 <9.5 Total Hexachlorodibenzofurans 2.5 <1.1 1.8 <4.1 Total Heptachlorodibenzofurans 11 <2.1 <3.8 <6.3 Octachlorodibenzofuran 9.6 4.2 <2.5 <5.3 Total Tctrachlorodibcnzo-p-dioxins 20 <1.3 <2.0 10 Total Pentachlorodibenzo-p-dioxins <3.4 <2.9 <2.6 <5.9 Total Hexachlorodibenzo-p-dioxins 1.7 <3.7 1.9 <16 Total Ileptachlorodibenzo-p-dioxins 9.8 <2.0 4.2 7.7 Octachlorodibenzo-p-dioxin 68 8.6 12 46 Internal Recoveries % 2,3,7,8-T4CDr-13C12 72 75 71 81 2,3,7,8 T4CDU-13C12 85 92 83 76 1,2,3,7,8-P5CDF-13C12 67 83 70 74 1,2,3,7,8-P5CDD-13C12 76 91 79 79 1,2,3,4,7,8-H6CDF-13C12 86 96 90 79 1,2,3,6,7,8-H6CDD-13C12 90 95 94 82 1,2,3,4,6,7,8-H7CDF-13C12 92 97 92 77 1,2,3,4,6,7,8-H7CDD-13C12 93 97 97 78 OCDD-13C12 104 112 114 68

23,2,8-C14-Dibenzofuran (DB5) pg 4.0 <1.7 <1.7 <4.8 2,3,7,8-C14-Dibenzo-p-dioxin <1.3 <2.0 <5.9 1,2,3,7,S-CI5-Dibenzofuran <1.5 <1.5 <1.6 <9.2 23,4,7,8-C15-Dibenzofuran <1.6 <1.6 <1.8 <9.8 l,2,3,7,8-C15-Dibenzo-p-dioxin <2.8 <2.9 <2.6 <5.9 1,2,3,4,7,8-C16-Dibenzofiiran <0.92 <0.97 1.6 <4.1 1,2,3,6,7,8-C16-Dibenzofuran <0.94 <0.99 <0.86 <3.4 2,3,4,6,7,8-C16-Dibenzofuran <1.1 <1.2 <1.0 <4.4 1,23,7,8,9-C16-Dibenzofuran <1.4 <1.4 <1.2 <4.8 1,2,3,4,7,8-ClO-Dibenzo-p-dioxin <1.2 <1.6 <1.4 <20 l,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.2 <1.6 <1.4 <14 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.2 <1.6 <1.3 <15 1,2,3,4,6,7,8-017 -Dibenzofuran 5.0 <3.2 <3.3 <5.5 1,2,3,4,7,8,9-C17-Dibenzofuran <2.2 <4.5 <4.6 <7.4 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 9.8 <2.7 4.2 7.7 1,2,3,4,6,7,8,9-C18-Dibenzofuran 9.6 4.2 <2.5 <5.3 1,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 68 8.6 12 46

2,3,7,8-TCDF (DB225) pg <5.7 <3.1 <3.7 <4.8 Internal Recoveries % 23,7,8 TCDF-13C12 96 92 92 81

TEQ based on Nato Factors pg 2.7 2.4 2.8 11.2

ClientiPhilip Analytical Services Inc Project:Misc.

CONFIDENTIAL, CITY_21MC100_003484019 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

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