NYC-WTC_000232785

NYC 9/11 Public Portal Document

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4th 4th 4th Client ID: Floor-01 Floor-02 Floor-03 Lab No.: 013660 03 013661 03 013662 03 Date Sampled: 29-Mar-2003 29-Mar-2003 29-Mar-2003 Component MDL Units

Total Tetrachlorodibenzofurans pg <1.8 4.0 Total PenLachlorodibenzofurans <4.1 <3.9 <3.2 Total Hexachlorodibenzofurans <1.2 <1.4 <1.2 Total Heptaehlorodibenzofurans <1.8 <3.5 <2.4 Octachlorodibenzofuran <1.6 4.3 2.7 Total Tetrachlorodibenzo-p-dioxins <3.3 13 <2.3 Total Pentachlorodibenzo-p-dioxins <1.6 <5.2 Total Hexachlorodibenzo-p-dioxins <2.8 <5.8 <2.3 Total Heptachlorodibenzo-p-dioxins <2.7 5.1 1.9 Octachlorodibenzo-p-dioxin <12 32 13 Internal Recoveries % 2,3,7,8-T4CDF-13C12 70 71 75 2,3,7,8-T4CDD-13C12 76 76 83 1,2,3,7.8-P5CDF-13C12 77 73 79 1,2,3,7,8-P5CDD-13C12 80 77 88 1,2,3,4.7,8-H6CDF-13C12 94 86 98 1,2,3,6.7,8-H6CDD-13C12 90 82 96 1,2,3,4.6,7,8-H7CDF-13C12 93 81 101 1,2,3,4.6,7,8-H7CDD-13C12 95 81 105 OCDD-13C12 85 65 92

2,3,7,8-C14-Dibenzofuran (DBS) pg <1.8 <4.0 2,3,7,8-C14-Dibenzo-p-dioxin <2.6 1,2,3,7.8-C15-Dibenzofuran <4.0 <3.8 2,3,4,7,8-C15-Dibenzofuran <4.1 <3.9 l,2,3,7.8-C15-Dibenzo-p-dioxin <1.6 <3.4 1,2,3,4.7,8-C16-Dibenzofuran <1.1 1,8 <1.1 1,2,3,6,7,8-C16-Dibenzofuran <1.1 <1.1 2,3,4,6,7,8-C16-Dibenzofuran <1.5 1,2,3,7,8,9-C16-Dibenzofuran <1.4 <1.6 <1.4 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <1.6 <2.2 <1.8 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.6 <2.2 <1.8 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.6 <2.1 <1.7 1,2,3,4,6,7,8-C17-Dibenzofuran <1.6 <3.1 <2.1 1,2,3,4.7,8,9-C17-Dibenzofuran <1.2 <1.3 <1.4 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin <2.7 5.1 <2.6 1,2,3,4,6,7,8,9-C18-Dibenzofuran <1.6 4.3 2.7 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin <12 32 13

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

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CITY_21MC100_009480066

NYC-WTC_000232791