NYC-WTC_000232821

NYC 9/11 Public Portal Document

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R02090957 R02090957 R02090957 Client ID: 07A OSA 09A Lab No.: 060291 02 060292 02 060293 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg <2.9 88 330 Total PenLachlorodibenzofurans <4.3 38 340 Total Hexachlorodibenzofurans <1.2 15 170 Total Heptachlorodibenzofurans <1.8 <13 20 Octachlorodibenzofuran <3.8 11 72 Total Tetrachlorodibenzo-p-dioxins 9.9 160 360 Total Pentachlorodibenzo-p-dioxins <3.8 13 370 Total Hexachlorodibenzo-p-dioxins <13 15 440 Total Heptachlorodibenzo-p-dioxins <3.3 60 300 Octachlorodibenzo-p-dioxin 16 210 890 Internal Recoveries % 2,3,7,8-T4CDF-13C12 83 84 102 2,3,7,8-T4CDD-13C12 74 73 88 1,2,3,7.8-P5CDF-13C12 89 84 101 1,2,3.7,8-P5CDD-13C12 88 83 98 1,2,3,4.7,8-H6CDF-13C12 94 85 97 1,2,3,6.7,8-H6CDD-13C12 85 78 90 1,2,3,4.6,7,8-H7CDF-13C12 86 81 100 1,2,3,4.6,7,8-H7CDD-13C12 78 77 97 OCDD-13C12 68 68 84

2,3,7,8-C14-Dibenzofuran (DB5) pg <2.9 <23 <56 2,3,7,8-C14-Dibenzo-p-dioxin <4.8 <3.8 <4.7 1,2,3,7.8-C15-Dibenzofuran <4.1 <6.8 12 2,3,4,7,8-C15-Dibenzofuran <4.4 <7.2 32 l,2,3,7.8-C15-Dibenzo-p-dioxin <3.8 <3.6 <6.0 1,2,3,4.7,8-C16-Dibe.nzofuran <1.2 7.4 51 1,2,3,6,7,8-C16-Dibenzofuran <0.99 2.9 20 2,3,4,6,7,8-C16-Dibenzofuran <1.3 <2.8 <14 1,2,3,7,8,9-C16-Dibenzofuran <1.4 <3.1 <4.6 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <4.0 <4.4 <6.1 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.9 <3.2 14 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <3.1 <3.4 24 1,2,3,4,6,7,8-C17-Dibenzofuran <1.6 <12 <89 1,2,3,4.7,8,9-C17-Dibenzofuran <1.7 <6.6 <2.8 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin <3.3 35 160 1,2,3,4,6,7,8,9-C18-Dibenzofuran <3.8 11 72 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 16 210 890

2,3,7,8-TCDF (DB225) pg <4.2 <5.4 12 Internal Recoveries % 2,3,7,8-TCDF-13C12 79 79 97

TEQ based on Nato Factors 5.6 7.6 24

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CITY_21MC100_011989408

NYC-WTC_000232826