NYC-WTC_000220326

NYC 9/11 Public Portal Document

3/11/2003 PASC - Certificate ofAnalysis Page 5 of 5

Blank Blank Client ID; Spike Spike Lab No.: %Recoveries Date Sampled: Component Units

Total Tetrachlorodibenzofurans pg 1100 Total Pentachlorodibenzofurans 5300 Total Hexachlorodibenzofurans 9100 Total Heptacblorodibenzofurans 5000 Octachlorodibenzofuran 4700 Total Tetrachlorodibenzo-p-dioxins 1000 Total Pentachlorodibenzo-p-dioxins 2700 Total Hexachlorodibenzo-p-dioxins 7200 Total Heptachlorodibenzo-p-dioxins 2500 Octachlorodibenzo-p-dioxin 4800 Internal Recoveries % 2,3,7,8-T4CDF-13C12 86 86 2,3,7,8-T4CDD-13C12 81 81 1,2,3,7,8-P5CDF-13C12 88 88 1,2,3,7,8-P5CDD-13C12 90 90 1,2,3,4,7,8-H6CDF-13C12 93 93 1,2,3,6,7.8-H6CDD-13C12 95 95 1,2,3,4,6,7,8-H7CDF-13C12 95 95 1,2,3,4,6,7,8-H7CDD-13C12 95 95 OCDD-13C12 86 86

2,3,7,8-C14-Dibenzofuran (DB5) pg 1000 104 2,3,7,8-CI4-Dibenzo-p-dioxin 1000 102 1,2,3,7,8-C15-Dibenzofuran 2600 102 2,3,4,7,8-C15-Dibenzofuran 2700 107 1,2,3,7,8-C15-Dibenzo-p-dioxin 2700 108 1,2,3,4,7,8-C16-Dibenzofuran 2400 94 1,2,3,6,7,8-C16-Dibenzofuran 2200 88 2,3,4,6,7,8-C16-Dibenzofuran 2400 95 1,2,3,7,8,9-C16-Dibenzofuran 2100 85 1,2,3,4,7,8-C16-Dibenzo-p-dioxin 2500 98 l,2,3,6,7,8-C16-Dibenzo-p-dioxin 2500 98 l,2,3,7,8,9-C16-Dibenzo-p-dioxin 2300 92 1,2,3,4,6,7,8-C17-Dibenzofuran 2500 100 1,2,3,4,7,8,9-C17-Dibenzofuran 2500 99 l,2,3,4,6,7,8-CI7-Dibenzo-p-dioxin 2400 97 l,2,3,4,6,7,8,9-CI8-Dibenzofuran 4700 95 l,2,3,4,6,7,8,9-CI8-Dibenzo-p-dioxin 4800 96

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

TEQ based on Nato Factors

Client:Philip Analytical Services Inc Project:Misc.

CITY_21MC100_002917211

NYC-WTC_000220330