NYC-WTC_000232821

NYC 9/11 Public Portal Document

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R02090957 R02090957 R02090957 Client ID: lOA llA 12A Lab No.: 060323 02 060324 02 060325 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg 78 33 79 Total PenLachlorodibenzofurans 23 25 45 Total Hexachlorodibenzofurans 8.6 10 20 Total Heptachlorodibenzofurans <9.7 <13 <15 Octachlorodibenzofuran 9.9 6.9 14 Total Tetrachlorodibenzo-p-dioxins 120 62 150 Total Pentachlorodibenzo-p-dioxins 23 19 31 Total Hexachlorodibenzo-p-dioxins 21 43 Total Heptachlorodibenzo-p-dioxins 21 34 100 Octachlorodibenzo-p-dioxin 47 110 250 Internal Recoveries % 2,3,7,8-T4CDF-13C12 93 90 94 2,3,7,8-T4CDD-13C12 87 83 86 1,2,3,7.8-P5CDF-13C12 99 88 104 1,2,3.7,8-P5CDD-13C12 98 87 100 1,2,3,4,7,8-H6CDF-13C12 96 94 97 1,2,3,6.7,8-H6CDD-13C12 92 93 91 1,2,3,4.6,7,8-H7CDF-13C12 91 89 91 1,2,3,4.6,7,8-H7CDD-13C12 93 90 90 OCDD-13C12 87 90 88

2,3,7,8-C14-Dibenzofuran (DB5) pg <18 <14 <18 2,3,7,8-C14-Dibenzo-p-dioxin <2.4 <2.4 <2.0 1,2,3,7.8-C15-Dibenzofuran 4.8 <4.1 <2.7 2,3,4,7-8-C15-Dibenzofuran 5.6 <4.2 5.2 l,2,3,7.8-C15-Dibenzo-p-dioxin <2.2 <2.5 <3.2 1,2,3,4.7,8-C16-Dibe.nzofuran 4.8 4.1 5.9 1,2,3,6,7,8-C16-Dibenzofuran <2.8 <2.3 3.0 2,3,4,6,7,8-C16-Dibenzofuran <3.3 <2.7 <2.9 1,2,3,7,8,9-C16-Dibenzofuran <3.5 <2.9 <3.1 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <3.0 <2.9 <2.8 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.7 <2.6 3.2 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <2.4 <2.4 <2.3 1,2,3,4,6,7,8-C17-Dibenzofuran <8.7 <11 <13 1,2,3,4.7,8,9-C17-Dibenzofuran <11 <15 <17 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 12 18 59 1,2,3,4,6,7,8,9-C18-Dibenzofuran 9.9 6.9 14 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 47 110 250

2,3,7,8-TCDF (DB225) pg <3.6 <3.7 <4.3 Internal Recoveries % 2,3,7,8-TCDF-13C12 97 93 99

TEQ based on Nato Factors 6.6 4.8 7.5

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CITY_21MC100_011989409

NYC-WTC_000232827