NYC-WTC_000232660

NYC 9/11 Public Portal Document

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Method Blank Client ID: Blank Spike R03030259- LabNo.: 009192 03 009192 03 % Date Sampled: 05-Mai--2003 05-Mai--2003 Recovery Component MDL Units

Total Tetrachlorodibenzofurans pg <1.2 1100 Total Pentachlorodibenzofiirans <1.5 5400 Total Hexachlorodibenzofurans <1.5 11000 Total Heptachlorodibenzofurans <2.8 5200 Octachlorodibenzofuran <5.3 5400 Total Tetrachlorodibenzo-p-dioxins <1.5 940 Total Pentachlorodibenzo-p-dioxins <1.4 2700 Total Hexachlorodibenzo-p-dioxins <1.6 7700 Total Heptachlorodibenzo-p-dioxins 12 2600 Octachlorodibenzo-p-dioxin 38 5300 Internal Recoveries % 2,3,7,8-T4CDF-13C12 80 77 2,3,7,8-T4CDD-13C12 88 82 1,2,3,7,8-P5CDF-13C12 86 92 1,2,3,7.8-P5CDD-13C12 85 83 1,2,3,4,7,8-H6CDF-13C12 100 91 1,2,3,6.7,8-H6CDD-13C12 97 88 1,2,3,4.6,7,8-H7CDF-13C12 114 101 1,2,3,4.6,7,8-H7CDD-13C12 111 97 OCDD-13C12 96 87

2,3,7,S-C14-Dibenzoturan (UB5) pg <1.2 1100 107 2,3,7,8-C14-Dibenzo-p-dioxin <1.5 940 111 1,2,3,7,8-C15-Dibenzofuran <1.5 2800 107 2,3,4,7.8-C15-Dibenzofiiran 2700 103 l,2,3,7,8-C15-Dibenzo-p-dioxin <1.4 2700 102 1,2,3,4,7,8-C16-Dibenzofuran <1.4 2600 105 1,2,3,6,7,8-C16-Dibenzofuran <1.4 2500 111 2,3,4,6.7,8-C16-Dibenzofuran <1.6 2600 104 1,2,3,7,8,9-C16-Dibenzofuran <1.9 2800 104 1,2,3,4-7,8-C16-Dibenzo-p-dioxin 2600 107 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <1.7 2500 94 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <1.6 2600 107 1,2,3,4.6,7,8-C17-Dibenzofuran <2.5 2600 102 1,2,3,4,7,8,9-C17-Dibenzofuran <3.3 2600 101 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 6.0 2600 103 1,2,3,4.6,7,8,9-C18-Dibenzofuran <5.3 5400 102 l,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 38 5300 106

2,3,7,8-TCDF (DB225) pg <5.4 Internal Recoveries % 2,3,7,8-TCDF-13C12 69

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CITY_21MC100_009479032

NYC-WTC_000232664