NYC-WTC_000234040

NYC 9/11 Public Portal Document

<date> PASC - Certificate of Analysis Page 5 of

R02090951 R02090951 R02090951 R02090951 Client ID: 14A 15A 16A 17A Lab No.: 060280 02 060281 02 060282 02 060283 02 Sampled: 12-Scp-2002 12-Scp-2002 12-Scp-2002 12-Scp-2002 Component MDL Units

Total Tctrachlorodibcnzofurans pg 140 81 120 65 Total Pentachlorodibenzofurans 95 64 250 19 Total Hexachlorodibenznfurans 71 32 83 8..5 Total Heptachlorodibenzofurans <27 16 21 <8.9 Octachlorodibenzofuran 22 18 31 7.9 Total Tetrachlorodibenzo-p-dioxins 190 130 670 94 Total Pentachlorodibenzo-p-dioxins 160 80 210 17 Total Hexachlorodibenzo-p-dioxins 120 47 92 18 Total Heptachlorodibenzo-p-dioxins 77 58 110 12 Octaclilorodibenzo-p-dioxin 240 200 440 100 Internal Recoveries % 2,3,7,8-T4CDF-13C12 94 78 84 79 2,3,7,8-T4CDD-13C12 88 86 91 83 1,2,3,7.8-P5CDF-13C12 85 77 83 84 1,2,3,7.8-P5CDD-13C12 93 80 92 88 1,2,3,4.7,8-H6CDF-13C12 88 81 87 79 1,2,3,6.7,8-H6CDD-13C12 91 85 97 85 1,2,3,4.6,7,8-H7CDF-13C12 82 73 78 70 1,2,3,4.6,7,8-H7CDD-13C12 90 82 86 80 OCDD-13C12 80 88 90 82

2,3,7,8-C14-Dibenzofiiran (DB5) pg 25 <17 <49 <13 2,3,7,8-C14-Dibenzo-p-dioxin <2.7 <2.4 <3.8 <2.0 1,2,3,7.8-C15-Dibenzofuran <5.7 6.3 <9.1 <3.5 2,3,4,7.8-C15-Dibenzofuran <13 6.5 16 <3.7 1,2,3,7,8-C15-Dibenzo-p-dioxin <2.3 <3.0 <2.6 1,2,3,4,7,8-C16-Dibcnzofuran 17 9.4 23 3.8 1,2,3,6,7,8-C16-Dibenzofuran 7.8 <4.1 8.3 <2.4 2,3,4,6,7,8-C16-Dibenzofuran 6.7 <3.5 <9.2 <2.9 1,2,3,7,8,9-C16-Dibcnzofuran <5.8 <3.7 <3.7 <3.1 1,2,3,4,7,8-C16-Dibenzo-p-dioxin <6.3 <3.2 <3.0 <3.0 1,2,3,6,7,8-C16-Dibenzo-p-dioxin <4. .5 <2.9 4.8 <2.7 l,2,3,7,8,9-C16-Dibenzo-jydioxin <5.6 <2.6 5.3 1,2,3,4,6,7,8-C17-Dibenzofuran <24 <21 <39 <7.9 1,2,3,4,7,8,9-C17-Dibenzofuran <32 <5.4 <13 <10 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 42 32 61 <18 1,2,3,4.6,7,8,9-C18-Dibenzofuran 22 18 31 7.9 l,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 240 200 440 100

2,3,7,8-TCDF (DB225) pg 8.1 <4.6 10 <3.6 Internal Recoveries % 2,3,7,8-TCDF-13C12 94 94 97 87

TEQ based on Nato Factors pg 6.4 5.04 13.2 0.5

TEQ's converted into appropriate units n«/iir 0.307 0.242 0.634 0.024 (a 209 cm’ area was wiped)

Client:Philip Analytical Services Inc Project:Misc.

CITY_21MC100_010322991

NYC-WTC_000234045