NYC-WTC_000232660

NYC 9/11 Public Portal Document

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7th 7th 7th Client ID: Floor-07 Floor-08 Floor-09 R03030259- -13A -14A -15A LabNo.: 009205 03 009206 03 009207 03 Date Sampled: 05-Mar-2003 05-Mar-2003 05-Mai--2003 Component MDI, Units

Total Tetrachlorodibenzofurans pg 24 <2.1 <3.1 Total Pentachlorodibenzofiirans 11 <3.2 <3.6 Total Hexachlorodibenzofurans 7.8 <1.7 <2.3 Total Heptachlorodibenzofurans 3.7 2.2 <3.0 Octachlorodibenzofuran 12 7.3 <4.7 Total Tetrachlorodibenzo-p-dioxins 36 3.3 <4.6 Total Pentachlorodibenzo-p-dioxins 26 <2.7 <4.8 Total Hexachlorodibenzo-p-dioxins 14 2.8 <5.3 Total Heptachlorodibenzo-p-dioxins 27 17 <5.6 Octachlorodibenzo-p-dioxin 86 55 13 Internal Recoveries % 2,3,7,8-T4CDF-13C12 102 84 69 2,3,7,8-T4CDD-13C12 112 105 92 1,2,3,7,8-P5CDF-13C12 100 86 74 1,2,3,7.8-P5CDD-13C12 85 79 78 1,2,3,4.7,8-H6CDF-13C12 111 112 105 1,2,3,6.7,8-H6CDD-13C12 100 102 99 1,2,3,4.6,7,8-H7CDF-13C12 108 112 99 1,2,3,4.6,7,8-H7CDD-13C12 96 105 101 OCDD-13C12 75 95 102

2,3,7,S-C14-Dibenzoturan (UB5) pg <8.2 <2.1 <3.1 2,3,7,8-C14-Dibenzo-p-dioxin <2.5 <2.4 <4.6 1,2,3,7,8-C15-Dibenzofuran <2.6 <3.2 <3.5 2,3,4,7.8-C15-Dibenzofiiran 2.9 <3.3 <3.6 l,2,3,7,8-C15-Dibenzo-p-dioxin <3.1 <2.7 <4.8 1,2,3,4,7,8-C16-Dibenzofuran 3.7 <1.5 <2.0 1,2,3,6,7,8-C16-Dibenzofuran <1.7 <1.5 <2.0 2,3,4,6.7,8-C16-Dibenzofuran <1.8 <1.7 <2.4 1,2,3,7,8,9-C16-Dibenzofm'an <2.1 <2.1 <2.8 1,2,3,4-7,8-C16-Dibenzo-p-dioxin <2.1 <1.9 <5.3 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.3 <2.1 <5.6 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <2.1 <1.9 <5.2 1,2,3,4.6,7,8-C17-Dibenzofuran <6.5 <2.4 <2.6 1,2,3,4,7,8,9-C17-Dibenzofuran <2.9 <2.2 <3.5 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 11 7.5 <5.6 1,2,3,4.6,7,8,9-C18-Dibenzofuran 12 7.3 <4.7 l,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 86 55 13

2,3,7,8-TCDF (DB225) pg <5.3 <2.5 <4.0 Internal Recoveries % 2,3,7,8-TCDF-13C12 86 85 73

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CITY_21MC100_009479037

NYC-WTC_000232669