NYC-WTC_000232660

NYC 9/11 Public Portal Document

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9th 9th 9th Client ID: Floor-07 Floor-08 Floor-09 R03030259- -19A -20A -21A LabNo.: 009211 03 009212 03 009213 03 Date Sampled: 05-Mai--2003 05-Mai--2003 05-Mai--2003 Component MDL Units

Total Tetrachlorodibenzofurans pg 140 100 Total Pentachlorodibenzofiirans 64 <2.7 54 Total Hexachlorodibenzofurans 36 <2.6 25 Total Heptachlorodibenzofurans <24 <2.4 <17 Octachlorodibenzofuran 5.9 <3.5 8.5 Total Tetrachlorodibenzo-p-dioxins 110 <4.0 130 Total Pentachlorodibenzo-p-dioxins 16 <7.0 28 Total Hexachlorodibenzo-p-dioxins 14 <35 10 Total Heptachlorodibenzo-p-dioxins 99 <4.9 33 Octachlorodibenzo-p-dioxin 120 9.8 52 Internal Recoveries % 2,3,7,8-T4CDF-13C12 73 65 78 2,3,7,8-T4CDD-13C12 90 86 102 1,2,3,7,8-P5CDF-13C12 79 72 83 1,2,3,7.8-P5CDD-13C12 83 82 94 1,2,3,4.7,8-H6CDF-13C12 78 92 91 1,2,3,6.7,8-H6CDD-13C12 77 94 90 1,2,3,4.6,7,8-H7CDF-13C12 76 89 87 1,2,3,4.6,7,8-H7CDD-13C12 76 94 92 OCDD-13C12 63 87 80

2,3,7,S-C14-Dibenzoiuran (UB5) pg 32 <2.7 31 2,3,7,8-C14-Dibenzo-p-dioxin <4.9 <3.3 <4.3 1,2,3,7,8-C15-Dibenzofuran 6.6 <2.7 <5.8 2,3,4,7.8-C15-Dibenzofiiran 6.8 <2.7 9.3 l,2,3,7,8-C15-Dibenzo-p-dioxin <7.6 <7.0 <7.3 1,2,3,4,7,8-C16-Dibenzofuran 13 <2.3 10 1,2,3,6,7,8-C16-Dibenzofuran 6.7 <2.4 <3.1 2,3,4,6.7,8-C16-Dibenzofuran <6.9 <2.7 <3.5 1,2,3,7,8,9-C16-Dibenzofm'an <8.4 <3.3 <4.3 1,2,3,4-7,8-C16-Dibenzo-p-dioxin <4.2 <3.4 <5.1 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <4.5 <3.6 <5.4 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <4.2 <3.3 <5.0 1,2,3,4.6,7,8-C17-Dibenzofuran <20 <2.1 <15 1,2,3,4,7,8,9-C17-Dibenzofuran <7.1 <2.9 <4.0 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin <18 <4.9 16 1,2,3,4.6,7,8,9-C18-Dibenzofuran 20 <3.5 8.5 l,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 120 9.8 52

2,3,7,8-TCDF (DB225) pg 15 <2.4 16 Internal Recoveries % 2,3,7,8-TCDF-13C12 78 70 76

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CITY_21MC100_009479039

NYC-WTC_000232671