NYC-WTC_000234040

NYC 9/11 Public Portal Document

<date> PASC - Certificate of Analysis Page 1 of

Method Blank Blank R02090951 Client ID: Bianki 0/04 Spike#l Spike#l OlA Lab No.: 060266 02 060266 02 %Recoveries 060267 02 Date Sampled: 12-Scp-2002 12-Scp-2002 12-Scp-2002 Component MDL Units

Total Tctrachlorodibcnzofurans pg <3.9 1100 <2.0 Total Pentachlorodibenzofurans 17 6400 <2.2 Total Hexachlorodibenzofnrans 52 10000 <1.6 Total Heptachlorodibenzofurans 42 5100 Octachlorodibenzofuran 67 4400 3.5 Total Tetrachlorodibenzo-p-dioxins 4.3 1100 4.3 Total Pentachlorodibenzo-p-dioxins 12 2700 <2.9 Total Hexachlorodibenzo-p-dioxins 35 7900 <8.9 Total Heptachlorodibenzo-p-dioxins 26 2600 3.9 Octaclilorodibenzo-p-dioxin 65 4900 16 Internal Recoveries % 2,3,7,8-T4CDF-13C12 65 70 70 82 2,3,7,8-T4CDD-13C12 74 84 84 79 1,2,3,7.8-P5CDF-13C12 43 70 70 88 1,2,3,7.8-P5CDD-13C12 48 76 76 105 1,2,3,4.7,8-H6CDF-13C12 72 85 85 86 1,2,3,6.7,8-H6CDD-13C12 74 88 88 91 1,2,3,4.6,7,8-H7CDF-13C12 82 86 86 83 1,2,3,4.6,7,8-H7CDD-13C12 75 89 89 81 OCDD-13C12 84 108 108 94

2,3,7,8-C14-Dibenzofiiran (DB5) pg <3.9 1100 105 <2.0 2,3,7,8-C14-Dibenzo-p-dioxin 4.3 1100 109 <2.6 1,2,3,7.8-C15-Dibenzofuran <9.6 2900 114 <2.1 2,3,4,7.8-C15-Dibenzofuran 17 3500 139 <2.3 1,2,3,7,8-C15-Dibenzo-p-dioxin 12 2700 110 <2.9 1,2,3,4,7,8-C16-Dibcnzofuran 11 2400 97 <1.4 1,2,3,6,7,8-C16-Dibenzofuran 14 2600 102 <1.4 2,3,4,6,7,8-C16-Dibenzofuran <14 2500 100 <1.7 1,2,3,7,8,9-C16-Dibcnzofuran 29 2500 98 <2.0 1,2,3,4,7,8-C16-Dibenzo-p-dioxin <9.1 2700 108 <4.6 1,2,3,6,7,8-C16-Dibenzo-p-dioxin 14 2600 105 <4.5 l,2,3,7,8,9-C16-Dibenzo-jydioxin 22 2600 102 <4.4 1,2,3,4,6,7,8-C17-Dibenzofuran 18 2600 104 <1.8 1,2,3,4,7,8,9-C17-Dibenzofuran 25 2400 97 <2.5 l,2,3,4,6,7,8-C17-Dibenzo-p-dioxin 26 2600 103 3.9 1,2,3,4.6,7,8,9-C18-Dibenzofuran 67 4400 87 3.5 l,2,3,4,6,7,8,9-C18-Dibenzo-p-dioxin 65 4900 99 16

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

TEQ based on Nato Factors pg 28.9 0.06

TEQ's converted into appropriate units n«/iir 1.39 0.000 0.000 0.003 (a 209 cm’ area was wiped)

Client:Philip Analytical Services Inc Project:Misc.

CITY_21MC100_010322987

NYC-WTC_000234041