NYC-WTC_000232802

NYC 9/11 Public Portal Document

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R02090951 R02090951 R02090951 Client ID: OlA 02A 03A Lab No.: 060267 02 060268 02 060269 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurans pg <2.0 130 27 Total PenLachlorodibenzofurans 55 <8.8 Total Hexachlorodibenzofurans <1.6 45 21 Total Heptaehlorodibenzofurans 46 57 Octachlorodibenzofuran 3.5 33 53 Total Tetrachlorodibenzo-p-dioxins 4.3 110 56 Total Pentachlorodibenzo-p-dioxins <2.9 16 5.1 Total Hexachlorodibenzo-p-dioxins <8.9 <35 2.9 Total Heptachlorodibenzo-p-dioxins 3.9 88 62 Octachlorodibenzo-p-dioxin 16 390 320 Internal Recoveries % 2,3,7,8-T4CDF-13C12 82 72 68 2,3,7,8-T4CDD-13C12 79 75 76 1,2,3,7.8-P5CDF-13C12 88 61 76 1,2,3.7,8-P5CDD-13C12 105 67 93 1,2,3,4.7,8-H6CDF-13C12 86 73 79 1,2,3,6.7,8-H6CDD-13C12 91 76 80 1,2,3,4,6,7,8-H7CDF-13C12 83 71 78 1,2,3,4.6,7,8-H7CDD-13C12 81 68 79 OCDD-13C12 94 75 91

2,3,7,8-C14-Dibenzo&ran (DBS) pg <2.0 20 11 2,3,7,8-C14-Dibenzo-p-dioxin <2.6 <2.5 <3.7 1,2,3,7,8-C15-Dibenzofuran 4.0 <6.5 2,3,4,7,8-C15-Dibenzofuran <2.3 <5.0 <7.1 l,2,3,7,8-C15-Dibenzo-p-dioxin <2.9 <3.6 <4.2 1,2,3,4.7,8-C16-Dibe.nzofuran <1.4 8.2 5.2 1,2,3,6,7,8-C16-Dibenzofuran <1.4 4.5 3.0 2,3,4,6,7,8-C16-Dibenzofuran <1.7 10 <2.7 1,2,3,7,8,9-C16-Dibenzofuran <2.0 <2.5 <3.3 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <4.6 <2.4 <2.6 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <4.5 <3.4 <2.6 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <4.4 <2.3 <2.5 1,2,3,4,6,7,8-C17-Dibenzofuran <1.8 21 33 1,2,3,4.7,8,9-C17-Dibenzofuran <3.1 <2.8 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 3.9 48 35 1,2,3,4,6,7,8,9-C18-Dibenzofuran 3.5 33 53 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 16 390 320

2,3,7,8-TCDF (DB225) pg 13 <6.5 Internal Recoveries % 2,3,7,8-TCDF-13C12 88 81

TEQ based on Nato Factors pg 3.8 8.7 7.7

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CITY_21MC100_009479979

NYC-WTC_000232806