NYC-WTC_000233421

NYC 9/11 Public Portal Document

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Method Blank Blank Method Blank Blank Client ID: Blank 10/17 Spike#l Spike# 1 BlaiiklO/12 Spike #1 Spike #1 Lab No.: 065481 02 065481 02 %Recoveries 065469 02 065469 02 %Recoveries late Sampled: 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurai pg <2.6 1900 <3.7 1000 Total Pentachlorodibenzofura <2.4 5300 <4.5 5700 Total Hexachlorodibenzofurai 3.1 8900 5.1 9300 Total Heptachlorodibenzofura <2.9 4300 5.2 4600 Octachlorodibenzofuran 15 4500 19 5300 Total Tetrachlorodibenzo-p-di <2.5 970 <4.3 1000 Total Pentachlorodibenzo-p-d <2.8 2700 <5.0 2700 Total Hexachlorodibenzo-p-di 4.4 7300 <4.8 7700 Total Heptachlorodibenzo-p-d 5.5 2300 8.0 2500 Octachlorodibenzo-p-dioxin 16 4800 17 5000 Internal Recoveries % 2,3,7,8-T4CDF-13C12 54 62 62 86 92 92 2,3,7,8-T4CDD-13C12 66 68 68 74 79 79 1,2,3,7.8-P5CDF-13C12 56 61 61 90 102 102 1,2,3,7.8-P5CDD-13C12 51 61 61 85 109 109 1,2,3.4,7,8-H6CDF-13C12 100 97 97 113 98 98 1,2,3,6.7,8-H6CDD-13C12 92 95 95 102 108 108 1,2,3,4.6,7,8-H7CDF-13C12 101 95 95 125 104 104 1,2,3.4,6,7,8-H7CDD-13C12 91 96 96 117 111 111 OCDD-13C12 101 110 110 133 no 110

2,3,7,8-C14-Dibenzofuran (DI pg <2.6 950 95 <3.7 990 99 2,3,7,8-C14-Dibenzo-p-dioxin <2.5 970 97 <4.3 1000 101 1,2,3,7,8-C15-Dibenzofuran <2.3 2500 99 <4.3 2600 106 2,3,4,7,8-C15-Dibenzofuran <2.5 2800 113 <4.7 3000 120 l,2,3,7,8-C15-Dibenzo-p-diox <2.8 2700 108 <5.0 2700 109 1,2,3,4.7,8-C16-Dibenzoruran 2.7 2200 87 <1.8 2300 91 1,2,3,6.7,8-C16-Dibenzofuran <2.4 2300 93 2.7 2400 98 2,3,4,6.7,8-C16-Dibenzofuran <2.8 2100 86 2.2 2500 99 1,2,3,7,8,9-C16-Dibenzofuran <3.4 2200 89 <4.7 2000 80 1.2.3. I.-.8 ('Io I )iIvnzo I', dJ <3.2 2400 97 <4.8 2700 110 1,2,3,6.7,8-C16-Dibenzo-i>dii 4.4 2500 100 <4.8 2400 95 1,2,3,7,8,9-C16-Dibenzoi>di< <3.1 2300 92 <4.7 2600 103 1,2,3,4.6,7,8-C17-Dibenzofur: <2.5 2100 86 4.5 2200 89 1,2,3,4.7,8,9-C17-Dibenzofur^ <3.6 2100 85 <6.1 2400 96 l,2,3,4,6,7,8-C17-Dibenzo-p-i 5.5 2300 92 8.0 2500 100 1,2,3,4.6,7,8,9-C18-Dibenzofi 15 4500 91 19 5300 106 1,2,3,4.6,7,8,9-C18-Dibenzo-] 16 4800 96 17 5000 101

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

i'EQ based on Nato bactors pg

appropriate units i^ni’ 0.000 0.000 0.000 0.000 0.000 0.000

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CITY_21MC100_003246138

NYC-WTC_000233425