NYC-WTC_000232660

NYC 9/11 Public Portal Document

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11th Floor 11th Floor 11th Floor Client ID: Down-07 Down-08 Down-09 R03030259- -25A -26A -27A LabNo.: 009217 03 009218 03 009219 03 Date Sampled: 04-Mai--2003 04-Mar-2003 04-Mai--2003 Component MDL Units

Total Tetrachlorodibenzofurans pg <2.9 90 43 Total Pentachlorodibenzofurans <4.2 21 68 Total Hexachlorodibenzofurans <2.2 22 31 Total Heptachlorodibenzofurans <3.6 <14 <35 Octachlorodibenzofuran <4.5 12 19 Total Tetrachlorodibenzo-p-dioxins <8.5 110 99 Total Pentachlorodibenzo-p-dioxins <8.9 19 21 Total Hexachlorodibenzo-p-dioxins <34 <59 2’’ Total Heptachlorodibenzo-p-dioxins 3.7 14 61 Octachlorodibenzo-p-dioxin 15 68 97 Internal Recoveries % 2,3,7,8-T4CDF-13C12 64 77 56 2,3,7,8-T4CDD-13C12 88 105 72 1,2,3,7,8-P5CDF-13C12 67 87 66 1,2,3,7.8-P5CDD-13C12 72 92 74 1,2,3,4.7,8-H6CDF-13C12 86 99 74 1,2,3,6.7,8-H6CDD-13C12 85 97 75 1,2,3,4.6,7,8-H7CDF-13C12 88 101 73 1,2,3,4,6,7,8-H7CDD-13C12 93 109 76 OCDD-13C12 84 105 60

2,3,7,S-C14-Dibenzoiuran (UB5) pg <2.9 <22 <30 2,3,7,8-C14-Dibenzo-p-dioxin <4.0 <4.0 <6.0 1,2,3,7,8-C15-Dibenzofuran <4.1 <8.2 <9.4 2,3,4,7.8-C15-Dibenzofiiran <4.2 <8.3 15 l,2,3,7,8-C15-Dibenzo-p-dioxin <8.9 <6.9 <8.8 1,2,3,4,7,8-C16-Dibenzofuran <1.9 7.8 19 1,2,3,6,7,8-C16-Dibenzofuran <2.0 <3.4 <12 2,3,4,6.7,8-C16-Dibenzofuran <2.3 <3.7 10 1,2,3,7,8,9-C16-Dibenzofm'an <2.8 <4.5 <6.7 1,2,3,4-7,8-C16-Dibenzo-p-dioxin <4.6 <5.4 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <4.9 <5.4 <5.7 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <4.5 <5.0 1,2,3,4.6,7,8-C17-Dibenzofuran <3.1 <12 <30 1,2,3,4,7,8,9-C17-Dibenzofuran <4.2 <2.9 <6.7 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 3.7 14 31 1,2,3,4,6,7,8,9-a8-Dibeiizofuran <4.5 12 19 l,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 15 68 97

2,3,7,8-TCDF (DB225) pg <4.2 <11 19 Internal Recoveries % 2,3,7,8-TCDF-13C12 68 88 65

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CITY_21MC100_009479041

NYC-WTC_000232673