NYC-WTC_000232785

NYC 9/11 Public Portal Document

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8th 8th 8th Client ID: Floor-01 Floor-02 Floor-03 Lab No.: 013672 03 013673 03 013674 03 Date Sampled: 29-Mar-2003 29-Mar-2003 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg <3.9 <2.1 <2.9 Total PenLachlorodibenzofurans <3.6 <4.5 <3.6 Total Hexachlorodibenzofurans <1.7 <1.5 <1.4 Total Heptaehlorodibenzofurans <2.7 <3.5 Octachlorodibenzofuran 4.3 <3.2 <1.9 Total Tetrachlorodibenzo-p-dioxins 13 <2.7 <2.5 Total Pentachlorodibenzo-p-dioxins <3.5 <3.6 <3.6 Total Hexachlorodibenzo-p-dioxins <5.2 <6.9 <4.9 Total Heptachlorodibenzo-p-dioxins 4.5 8.0 <2.6 Octachlorodibenzo-p-dioxin 24 16 7.0 Internal Recoveries % 2,3,7,8-T4CDF-13C12 64 70 76 2,3,7,8-T4CDD-13C12 71 76 77 1,2,3,7.8-P5CDF-13C12 73 78 79 1,2,3.7,8-P5CDD-13C12 82 85 84 1,2,3,4.7,8-H6CDF-13C12 82 88 91 1,2,3,6.7,8-H6CDD-13C12 82 90 87 1,2,3,4.6,7,8-H7CDF-13C12 84 91 90 1,2,3,4.6,7,8-H7CDD-13C12 85 94 90 OCDD-13C12 68 83 76

2,3,7,8-C14-Dibenzo&ran (DB5) pg <3.9 <2.1 <2.9 2,3,7,8-C14-Dibenzo-p-dioxin <4.2 <2.7 <2.5 1,2,3,7.8-C15-Dibenzofuran <3.6 <4.4 <3.6 2,3,4,7,8-C15-Dibenzofuran <3.6 <4.5 <3.7 l,2,3,7-8-C15-Dibenzo-p-dioxin <3.5 <3.6 <3.6 1,2,3,4.7,8-C16-Dibe.nzofuran <1.6 <1.4 <1.3 1,2,3,6,7,8-C16-Dibenzofuran <1.6 <1.2 2,3,4,6,7,8-C16-Dibenzofuran <1.9 <1.6 1,2,3,7,8,9-C16-Dibenzofuran <2.0 <1.7 <1.6 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <2.4 <1.7 <2.2 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.4 <1.7 <2 2 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <2.3 <1.6 <2.1 1,2,3,4,6,7,8-C17-Dibenzofuran <2.4 <3.1 <1.4 1,2,3,4.7,8,9-C17-Dibenzofuran <1.4 <1.5 <1.8 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 4.5 4.9 <2.6 1,2,3,4,6,7,8,9-C18-Dibenzofuran 4.3 <3.2 <1.9 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 24 16 7.0

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

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CITY_21MC100_009480070

NYC-WTC_000232795