NYC-WTC_000232802

NYC 9/11 Public Portal Document

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Method Blank Blank Client ID: BlanklO/04 Spike#l Spike#l Lab No.: 060266 02 060266 02 %Recoveries Date Sampled: 12-Sep-2002 12-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurans pg <3.9 1100 Total PenLachlorodibenzofurans 17 6400 Total Hexachlorodibenzofurans 52 10000 Total Heptaehlorodibenzofurans 42 5100 Octachlorodibenzofuran 67 4400 Total Tetrachlorodibenzo-p-dioxins 4.3 1100 Total Pentachlorodibenzo-p-dioxins 12 2700 Total Hexachlorodibenzo-p-dioxins 35 7900 Total Heptachlorodibenzo-p-dioxins 26 2600 Octachlorodibenzo-p-dioxin 65 4900 Internal Recoveries % 2,3,7,8-T4CDF-13C12 65 70 70 2,3,7,8-T4CDD-13C12 74 84 84 1,2,3,7.8-P5CDF-13C12 43 70 70 1,2,3,7,8-P5CDD-13C12 48 76 76 1,2,3,4.7,8-H6CDF-13C12 72 85 85 1,2,3,6.7,8-H6CDD-13C12 74 88 88 1,2,3,4.6,7,8-H7CDF-13C12 82 86 86 1,2,3,4.6,7,8-H7CDD-13C12 75 89 89 OCDD-13C12 84 108 108

2,3,7,8-C14-Dibenzofuran (DB5) pg <3.9 1100 105 2,3,7,8-C14-Dibenzo-p-dioxin 4.3 1100 109 1,2,3,7.8-C15-Dibenzofuran <9.6 2900 114 2,3,4,7,8-C15-Dibenzofuran 17 3500 139 l,2,3,7.8-C15-Dibenzo-p-dioxin 12 2700 110 1,2,3,4.7,8-C16-Dibe.nzofuran 11 2400 97 1,2,3,6,7,8-C16-Dibenzofuran 14 2600 102 2,3,4,6,7,8-C16-Dibenzofuran <14 2500 100 1,2,3,7,8,9-C16-Dibenzofuran 29 2500 98 l,2,3,4,7,8-C16-Dibenzo-j>dioxin <9.1 2700 108 1,2,3,6,7,8-C16-Dibenzo-p-dioxin 14 2600 105 l,2,3,7,8,9-C16-Dibenzo-p-dioxin 22 2600 102 1,2,3,4,6,7,8-C17-Dibenzofuran 18 2600 104 1,2,3,4.7,8,9-C17-Dibenzofuran 25 2400 97 1,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 26 2600 103 1,2,3,4,6,7,8,9-C18-Dibenzofuran 67 4400 87 1,2,3,4.6,7,8,9-C18-Dibenzo-p-di oxin 65 4900 99

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

TEQ based on Nato Factors pg 26.0

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CITY_21MC100_009479978

NYC-WTC_000232805