NYC-WTC_000232821

NYC 9/11 Public Portal Document

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R02090957 R02090957 R02090957 Client ID: 04A 05A 06A Lab No.: 060288 02 060289 02 060290 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg 860 160 69 Total PenLachlorodibenzofurans 720 77 19 Total Hexachlorodibenzofurans 350 33 9.7 Total Heptachlorodibenzofurans 32 <5.3 <13 Octachlorodibenzofuran 41 7.9 6.7 Total Tetrachlorodibenzo-p-dioxins 1200 160 89 Total Pentachlorodibenzo-p-dioxins 1400 9.6 23 Total Hexachlorodibenzo-p-dioxins 670 18 5.1 Total Heptachlorodibenzo-p-dioxins 200 59 38 Octachlorodibenzo-p-dioxin 550 140 210 Internal Recoveries % 2,3,7,8-T4CDF-13C12 87 94 106 2,3,7,8-T4CDD-13C12 91 82 91 1,2,3,7.8-P5CDF-13C12 76 102 119 1,2,3.7,8-P5CDD-13C12 80 99 118 1,2,3,4.7,8-H6CDF-13C12 95 92 98 1,2,3,6.7,8-H6CDD-13C12 93 87 94 1,2,3,4,6,7,8-H7CDF-13C12 86 89 93 1,2,3,4.6,7,8-H7CDD-13C12 93 87 89 OCDD-13C12 100 76 81

2,3,7,8-C14-Dibenzofuran (DB5) pg <170 <25 13 2,3,7,8-C14-Dibenzo-p-dioxin 6.9 <5.1 <3.3 1,2,3,7,8-C15-Dibenzofuran 37 <5.2 2,3,4,7,8-C15-Dibenzofuran <68 <1.6 l,2,3,7,8-C15-Dibenzo-p-dioxin <17 <1.1 <2.9 1,2,3,4.7,8-C16-Dibe.nzofuran 83 9.6 5.9 1,2,3,6,7,8-C16-Dibenzofuran 31 <4.6 3.1 2,3,4,6,7,8-C16-Dibenzofuran 30 4.0 1,2,3,7,8,9-C16-Dibenzofuran <3.8 <1.9 l,2,3,4,7,8-C16-Dibenzo-j>dioxin 9.0 <4.8 <3.5 1,2,3,6,7,8-C16-Dibenzo-p-dioxin 17 <3.5 l,2,3,7,8,9-C16-Dibenzo-p-dioxin 25 <3.8 <2.7 1,2,3,4,6,7,8-C17-Dibenzofuran <77 <13 <11 1,2,3,4.7,8,9-C17-Dibenzofuran <1.8 <6.2 <1.6 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 100 <3.3 38 1,2,3,4,6,7,8,9-C18-Dibenzofuran 41 7.9 6.7 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 550 140 210

2,3,7,8-TCDF (DB225) pg 27 <6.1 <4.1 Internal Recoveries % 2,3,7,8-TCDF-13C12 100 90 96

TEQ based on Nato Factors 55 6.2 6.3

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CITY_21MC100_011989407

NYC-WTC_000232825