NYC-WTC_000220326

NYC 9/11 Public Portal Document

3/11/2003 PtIA'C - Certificate ofAnalysis Page 3 of 5

R02090957 R02090957 R02090957 R02090957 R02090957 Client ID; llA 12A 13A 14A ISA Lab No.; 060324 02 060325 02 060326 02 060327 02 060328 02 Date Sampled; 12-Sep-2002 12-Sep-2002 12-Sep-2002 I2-Sep-2OO2 12-Sep-2002 Component Units

Total Tetrachlorodibenzofurans pg 33 79 2.8 17 170 Total Pentachlorodibenzofurans 25 45 <3.5 39 40 Total Hexachlorodibenzofurans 10 20 <2.6 29 19 Total Heptachlorodibenzofurans <13 <15 <10 <18 <20 Octachlorodibenzofuran 6.9 14 <4.5 17 16 Total Tetrachlorodibenzo-p-dioxins 62 150 5.7 83 160 Total Pentachlorodibenzo-p-dioxins 19 31 <2.0 65 37 Total Hexachlorodibenzo-p-di ox i ns 22 43 <2.6 69 41 Total Heptachlorodibenzo-p-dioxins (I 34 100 10 50 25 Octachlorodibenzo-p-dioxin 110 250 28 110 150 Internal Recoveries % 2,3,7,8-T4CDF-13C12 90 94 88 98 66 2,3,7,8-T4CDD-13C12 83 86 83 88 63 1,2,3,7,8-P5CDF-I3C12 88 104 94 105 66 1,2,3,7,8-P5CDD-13C12 87 100 100 106 65 1,2,3,4,7,8-H6CDF-13C12 94 97 99 103 72 1,2,3,6,7,8-H6CDD-13C12 93 91 99 98 71 1,2,3,4,6,7,8-H7CDF-I3C12 89 91 96 96 70 1,2,3,4,6,7,8-H7CDD-13C12 90 90 99 94 69 OCDD-13C12 90 88 93 96 70

2,3,7,8-C14-Dibenzofuran (DB5) pg <14 <18 <2.8 <11 <25 2,3,7,8-C14-Dibenzo-p-dioxin <2.4 <2.0 <2.3 <2.8 <3.3 1,2,3,7,8-C15-Dibenzofuran <4.1 <2.7 <3.4 <5.6 <4.6 2,3,4,7,8-C15-Dibenzofuran (I <4.2 5.2 <3.6 <8.4 <4.8 1,2,3,7,8-C15-Dibenzo-p-dioxin <2.5 <3.2 <2.0 <3.5 <3.0 1,2,3,4,7,8-C16-Dibenzofuran 4.1 5.9 <2.4 9.3 7.9 1,2,3,6.7,8-C16-Dibenzofuran <2.3 3.0 <2.3 <6.1 <4.5 2,3,4,0,7,8-C16-Dibenzofuran <2.7 <2.9 <2.7 7.0 <5.4 1,2,3,7,8,9-C16-Dibenzofuran <2.9 <3.1 <2.9 <2.9 <5.7 l,2,3,4,7,8-C16-Dibenzo-p-dioxin <2.9 <2.8 <2.9 3.8 <3.2 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <2.6 3.2 <2.6 4.2 <2.9 l,2,3,7,8,9-C16-Dibenzo-p-dioxin It <2.4 <2.3 <2.4 6.0 <2.6 1,2,3,4,6,7,8-C17-Dibenzofuran <11 <13 <9.2 <16 <18 1,2,3,4,7,8,9-C17-Dibenzofuran <15 <17 <12 <20 <22 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 18 59 6.6 28 <23 1,2,3,4,6,7,8,9-C18-Dibenzofuran 6.9 14 <4.5 17 16 tt 1,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 110 250 28 110 150

2,3,7,8-TCDF (DB225) pg <3.7 <4.3 <4.2 <3.1 <8.8 Internal Recoveries % 2,3,7,8-TCDF-13C12 93 99 94 99 73

TEO based on Nato Factors 4.8 7.5 4 8.7 6.6

Client.Philip Analytical Services Inc Project.Misc.

CITY_21MC100_002917209

NYC-WTC_000220328