NYC-WTC_000232821

NYC 9/11 Public Portal Document

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R02090957 R02090957 R02090957 Client ID: OlA 02A 03A Lab No.: 060285 02 060286 02 060287 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg 100 270 150 Total PenLachlorodibenzofurans 250 97 65 Total Hexachlorodibenzofurans 70 32 20 Total Heptachlorodibenzofurans 13 <20 <15 Octachlorodibenzofuran 17 13 13 Total Tetrachlorodibenzo-p-dioxins 940 310 150 Total Pentachlorodibenzo-p-dioxins 370 130 28 Total Hexachlorodibenzo-p-dioxins 110 55 29 Total Heptachlorodibenzo-p-dioxins 74 66 58 Octachlorodibenzo-p-dioxin 290 230 220 Internal Recoveries % 2,3,7,8-T4CDF-13C12 86 83 85 2,3,7,8-T4CDD-13C12 91 85 85 1,2,3,7.8-P5CDF-13C12 90 88 90 1,2,3,7,8-P5CDD-13C12 93 92 94 1,2,3,4.7,8-H6CDF-13C12 91 83 90 1,2,3,6.7,8-H6CDD-13C12 96 88 92 1,2,3,4.6,7,8-H7CDF-13C12 85 81 85 1,2,3,4.6,7,8-H7CDD-13C12 88 87 90 OCDD-13C12 93 88 97

2,3,7,8-C14-Dibenzofuran (DB5) pg <70 <42 <21 2,3,7,8-C14-Dibenzo-p-dioxin <2.8 <2.1 <3.2 1,2,3,7.8-C15-Dibenzofuran <14 <5.9 <3.3 2,3,4,7,8-C15-Dibenzofuran <19 9.8 6.9 l,2,3,7.8-C15-Dibenzo-p-dioxin <4.0 <2.6 <2.6 1,2,3,4.7,8-C16-Dibe.nzofuran 19 10 7.9 1,2,3,6,7,8-C16-Dibenzofuran 7.4 <3.5 <3.7 2,3,4,6,7,8-C16-Dibenzofuran 7.0 <4.2 <4.4 1,2,3,7,8,9-C16-Dibenzofuran <3.5 <4.4 <4.7 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <5.2 <4.7 <6.9 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <4.7 <4.2 <6.2 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <4.3 <3.8 <5.6 1,2,3,4,6,7,8-C17-Dibenzofuran <19 <18 <14 1,2,3,4.7,8,9-C17-Dibenzofuran <11 <23 <17 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 40 34 32 1,2,3,4,6,7,8,9-C18-Dibenzofuran 17 13 13 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 290 230 220

2,3,7,8-TCDF (DB225) pg 10 5.4 4.4 Internal Recoveries % 2,3,7,8-TCDF-13C12 97 90 92

TEQ based on Nato Factors 13 10 9.3

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CITY_21MC100_011989406

NYC-WTC_000232824