NYC-WTC_000232821

NYC 9/11 Public Portal Document

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R02090957 R02090957 R02090957 Client ID: 16A 17A 18A Lab No.: 060329 02 060330 02 060331 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg 5.9 36 90 Total PenLachlorodibenzofurans <3.9 13 39 Total Hexachlorodibenzofurans <1.2 5.4 20 Total Heptachlorodibenzofurans <1.8 <1.1 <2.0 Octachlorodibenzofuran <3.1 <3.6 12 Total Tetrachlorodibenzo-p-dioxins 21 30 86 Total Pentachlorodibenzo-p-dioxins 5.7 <4.7 38 Total Hexachlorodibenzo-p-dioxins <13 <19 6.0 Total Heptachlorodibenzo-p-dioxins 5.4 4.3 80 Octachlorodibenzo-p-dioxin 27 28 340 Internal Recoveries % 2,3,7,8-T4CDF-13C12 95 111 102 2,3,7,8-T4CDD-13C12 87 74 84 1,2,3,7.8-P5CDF-13C12 93 103 104 1,2,3,7,8-P5CDD-13C12 94 104 106 1,2,3,4.7,8-H6CDF-13C12 92 96 95 1,2,3,6.7,8-H6CDD-13C12 92 96 91 1,2,3,4.6,7,8-H7CDF-13C12 94 93 91 1,2,3,4.6,7,8-H7CDD-13C12 93 92 89 OCDD-13C12 81 81 79

2,3,7,8-C14-Dibenzofuran (DB5) pg <3.4 11 17 2,3,7,8-C14-Dibenzo-p-dioxin <3.6 <4.8 <3.3 1,2,3,7.8-C15-Dibenzofuran <3.8 <3.6 2,3,4,7,8-C15-Dibenzofuran <4.1 <5.8 <4.4 l,2,3,7.8-C15-Dibenzo-p-dioxin <3.7 <4.7 <4.9 1,2,3,4.7,8-C16-Dibe.nzofuran <1.2 2.1 7.1 1,2,3,6,7,8-C16-Dibenzofuran <0.98 <1.4 <2.8 2,3,4,6,7,8-C16-Dibenzofuran <1.3 <1.8 <3.6 1,2,3,7,8,9-C16-Dibenzofuran <1.4 <2.0 <4.0 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <3.6 <3.8 <4.4 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.6 <2.7 <3.3 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <2.8 <3.0 <3.5 1,2,3,4,6,7,8-C17-Dibenzofuran <1.6 <15 1,2,3,4.7,8,9-C17-Dibenzofuran <2.1 <1.2 <2.3 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 5.4 4.3 41 1,2,3,4,6,7,8,9-C18-Dibenzofuran <3.1 <3.6 12 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 27 28 340

2,3,7,8-TCDF (DB225) pg <4.1 <3.8 <3.9 Internal Recoveries % 2,3,7,8-TCDF-13C12 102 92 98

TEQ based on Nato Factors 4.8 6.3 6.9

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CITY_21MC100_011989411

NYC-WTC_000232829