NYC-WTC_000232785

NYC 9/11 Public Portal Document

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5th 5th 5th Client ID: Floor-01 Floor-02 Floor-03 Lab No.: 013663 03 013664 03 013665 03 Date Sampled: 29-Mar-2003 29-Mar-2003 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg <1.4 <1.4 <2.1 Total PenLachlorodibenzofurans <2.0 1.9 <1.8 Total Hexachlorodibenzofurans <1.1 <1.4 <1.3 Total Heptaehlorodibenzofurans <1.9 <1.5 <2.1 Octachlorodibenzofuran <2.0 <2.0 3.5 Total Tetrachlorodibenzo-p-dioxins <1.4 <1.7 2.5 Total Pentachlorodibenzo-p-dioxins <1.5 <1.7 <2.0 Total Hexachlorodibenzo-p-dioxins <3.8 <1.9 Total Heptachlorodibenzo-p-dioxins 2.4 <3.0 11 Octachlorodibenzo-p-dioxin 7.0 6.6 62 Internal Recoveries % 2,3,7,8-T4CDF-13C12 77 67 75 2,3,7,8-T4CDD-13C12 84 77 81 1,2,3,7.8-P5CDF-13C12 79 71 75 1,2,3,7,8-P5CDD-13C12 85 78 79 1,2,3,4.7,8-H6CDF-13C12 107 90 93 1,2,3,6.7,8-H6CDD-13C12 102 88 93 1,2,3,4.6,7,8-H7CDF-13C12 105 92 89 1,2,3,4.6,7,8-H7CDD-13C12 106 95 90 OCDD-13C12 89 82 74

2,3,7,8-C14-Dibenzo&ran (DB5) pg <1.4 <1.4 <2.1 2,3,7,8-CI4-Dibenzo-p-dioxin <1.4 <1.7 <2.1 1,2,3,7.8-C15-Dibenzofuran <2.0 <1.3 <1.7 2,3,4,7,8-C15-Dibenzofuran <2.0 1.9 <1.8 l,2,3,7.8-C15-Dibenzo-p-dioxin <1.7 <2.0 1,2,3,4.7,8-C16-Dibe.nzofuran <1.0 <1.3 <1.2 1,2,3,6,7,8-C16-Dibenzofuran <1.0 <1.2 2,3,4,6,7,8-C16-Dibenzofuran <1.2 <1.5 <1.4 1,2,3,7,8,9-C16-Dibenzofuran <1.3 <1.7 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <1.5 <1.6 <1.9 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.6 <1.9 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.4 <1.5 <1.8 1,2,3,4,6,7,8-C17-Dibenzofuran <1.7 <1.5 <2.1 1,2,3,4.7,8,9-C17-Dibenzofuran <2.2 <1.4 <1.5 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 2.4 <3.0 7.0 1,2,3,4,6,7,8,9-C18-Dibenzofuran <2.0 <2.0 3.5 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 7.0 6.6 62

2,3,7,8-TCDF (DB225) pg Internal Recoveries % 2,3,7,8-TCDF-13C12

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CITY_21MC100_009480067

NYC-WTC_000232792