NYC-WTC_000220326

NYC 9/11 Public Portal Document

3/11/2003 PASC - Certificate ofAnalysis Page 4 of 5

R02090957 R02090957 R02090957 Method Method Client/D: 16A 17A 18A Blank 10/08 Blank 10/09 Lab No.: 060329 02 060330 02 060331 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg 5.9 36 90 <4.4 <1.5 Total Pentachlorodibenzofurans <3.9 13 39 <10 <1.8 Total Hexachlorodibenzofurans II <1.2 5.4 20 5.4 <3.0 Total Heptachlorodibenzofurans tl <1.8 <1.1 <2.0 21 <3.3 It Octachlorodibenzofuran <3.1 <3.6 12 33 Total Tetrachlorodibenzo-p-dioxins 21 30 86 <6.0 <1.8 Total Pentachlorodibenzo-p-dioxins 5.7 <4.7 38 <5.2 <2.5 Total Hexachlorodibenzo-p-dioxins <13 <19 6.0 <7.4 <2.7 Total Heptachlorodibenzo-p-dioxins II 5.4 4.3 80 21 10 Octachlorodibenzo-p-dioxin 27 28 340 42 30 Internal Recoveries % 2,3,7,8-T4CDF-13C12 95 111 102 74 86 2,3,7,8-T4CDD-13CI2 87 74 84 77 80 1,2,3,7,8-P5CDF-13C12 93 103 104 75 86 1,2,3,7,8-P5CDD-13C12 94 104 106 80 87 1,2,3,4,7,8-H6CDF-13C12 92 96 95 74 100 1,2,3,6,7,8-H6CDD-13C12 92 96 91 78 100 l,2,3,4,6,7,8-H7CDF-13C12 94 93 91 69 98 1,2,3,4,6,7,8-H7CDD-13C12 93 92 89 80 100 OCDD-I3C12 81 81 79 78 94

2,3,7,8-C14-Dibenzofuran (DBS) pg <3.4 11 17 <4.4 2,3,7,8-C14-Dibenzo-p-dioxin II <3.6 <4.8 <3.3 <6.0 <1.8 1,2,3,7,8-C15-Dibenzofuran <3.8 <5.5 <3.6 <10 <1.8 2,3,4,7,8-C15-Dibenzofuran <4.1 <5.8 <4.4 <10 <1.9 1,2,3,7,8-CI5-Dibenzo-p-dioxin <3.7 <4.7 <4.9 <5.2 <2.5 1,2,3,4,7,8-C16-Dibenzofuran <1.2 2.1 7.1 5.2 <2.8 1,2,3,6,7,8-C16-Dibenzofuran <0.98 <1.4 <2.8 <3.7 <2,6 2,3,4,6,7,8-C16-Diben2ofuran <1.3 <1.8 <3.6 <4.5 <3,2 1,2,3,7,8,9-C16-Dibenzofuran <1.4 <2.0 <4.0 <4.7 <3.4 l,2,3,4,7,8-C16-Dibenzo-p-dioxin <3.6 <3.8 <4.4 <8.2 <3.0 l,2,3,6,7,8-C16-Dibenzo-p-dioxin II <2.6 <2.7 <3.3 <7.4 <2.7 l,2,3,7,8,9-C16-Dibenzo-p-dioxin <2.8 <3.0 <3.5 <6.7 <2.5 1,2.3,4,6,7,8-C17-Dibenzofuran II <1.6 <2.1 <15 11 <3.0 1,2,3,4,7,8,9-C17-Dibenzofuran <2.1 <1.2 <2.3 <5.7 <3.8 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 5.4 4.3 41 21 6.7 1,2,3,4,6,7,8,9-C18-Dibenzofuran <3.1 <3.6 12 33 <5.3 l,2,3,4,6,7,8,9-CI8-Dibenzo-p-dioxin 27 28 340 42 30

2,3,7,8-TCDF (DB225) pg <4.1 <3.8 <3.9 Internal Recoveries % 2,3,7,8-TCDF-13C12 102 92 98

TEQ based on Nato Factors 4.8 6.3 6.9 10

Client;Philip Analytical Services Inc Project:Misc.

CITY_21MC100_002917210

NYC-WTC_000220329