NYC-WTC_000232802

NYC 9/11 Public Portal Document

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R02090951 R02090951 R02090951 Client ID: 16A 17A 18A Lab No.: 060282 02 060283 02 060284 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurans pg 120 65 130 Total PenLachlorodibenzofurans 250 19 62 Total Hexachlorodibenzofurans 83 8.5 21 Total Heptaehlorodibenzofurans 21 <8.9 14 Octachlorodibenzofuran 31 7.9 22 Total Tetrachlorodibenzo-p-dioxins 670 94 110 Total Pentachlorodibenzo-p-dioxins 210 17 35 Total Hexachlorodibenzo-p-dioxins 92 18 59 Total Heptachlorodibenzo-p-dioxins 110 12 74 Octachlorodibenzo-p-dioxin 440 100 300 Internal Recoveries % 2,3,7,8-T4CDF-13C12 84 79 90 2,3,7,8-T4CDD-13C12 91 83 102 1,2,3,7.8-P5CDF-13C12 83 84 94 1,2,3.7,8-P5CDD-13C12 92 88 98 1,2,3,4.7,8-H6CDF-13C12 87 79 94 1,2,3,6.7,8-H6CDD-13C12 97 85 98 1,2,3,4,6,7,8-H7CDF-13C12 78 70 80 1,2,3,4.6,7,8-H7CDD-13C12 86 80 88 OCDD-13C12 90 82 92

2,3,7,8-C14-Dibenzo&ran (DB5) pg <49 <13 <20 2,3,7,8-C14-Dibenzo-p-dioxin <3.8 <2.0 <2.4 1,2,3,7,8-C15-Dibenzofuran <9.1 <3.5 <2.7 2,3,4,7,8-C15-Dibenzofuran 16 <3.7 5.9 l,2,3,7,8-C15-Dibenzo-p-dioxin <3.0 <2.6 <2.5 1,2,3,4.7,8-C16-Dibe.nzofuran 23 3.8 8.4 1,2,3,6,7,8-C16-Dibenzofuran 8.3 <2.4 <3.2 2,3,4,6,7,8-C16-Dibenzofuran <9.2 <2.9 <3.9 1,2,3,7,8,9-C16-Dibenzofuran <3.7 <3.1 <4.1 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <3.0 <3.0 <2.9 1,2,3,6,7,8-C16-Dibenzo-p-dioxin 4.8 <2.7 2.8 l,2,3,7,8,9-C16-Dibenzo-p-dioxin 5.3 <2.5 3.4 1,2,3,4,6,7,8-C17-Dibenzofuran <39 <7.9 <17 1,2,3,4.7,8,9-C17-Dibenzofuran <13 <10 <13 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 61 <18 43 1,2,3,4,6,7,8,9-C18-Dibenzofuran 31 7.9 22 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 440 100 300

2,3,7,8-TCDF (DB225) pg 10 <3.6 <5.1 Internal Recoveries % 2,3,7,8-TCDF-13C12 97 87 109

TEQ based on Nato Factors pg 18.2 4.6 8.2

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CITY_21MC100_009479984

NYC-WTC_000232811