NYC-WTC_000234498

NYC 9/11 Public Portal Document

LDUDCD"DTDiDmDeDsD aNDeDwa □RDoDmDaDnD,DBDoDlDdD □UtDaDlEiDcD"DlD4DPDADSD

Method Blank Blank R02090951 R02090951 R02090951 Client ID: BlanklO/04 Spike#l Spike#l OlA 02A 03A Lab No.: 060266 02 060266 02 %Recoveries 060267 02 060268 02 060269 02 Date Sampled: 12-Sep-2002 12-Sep-2002 12-Sep-2002 12-Sep-2002 12-Sep-2002 Component MDL Units

Total Tetrachlorodibenzofurai pg <3.9 1100 <2.0 130 27 Total Pentachlorodibenzofijra 17 6400 <2.2 55 <8.8 Total Hexachlorodibenzofurai 52 10000 <1.6 45 21 Total Heptachlorodibenzofura 42 5100 <2.1 46 57 Octachlorodibenzofuran 67 4400 3.5 33 53 Total Tetrachlorodibenzo-p-di 4.3 1100 4.3 no 56 Total Pentachlorodibenzo-p-d 12 2700 <2.9 16 5.1 Total Hexachlorodibenzo-p-di 35 7900 <8.9 <35 2.9 Total Heptachlorodibenzo-p-d 26 2600 3.9 88 62 Octachlorodibenzo-p-dioxin 65 4900 16 390 320 Internal Recoveries % 2,3,7,8-T4CDF-13C12 65 70 70 82 72 68 2,3,7,8-T4CDD-13C12 74 84 84 79 75 76 1,2,3,7.8-P5CDF-13C12 43 70 70 88 61 76 1,2,3,7.8-P5CDD-13C12 48 76 76 105 67 93 1,2,3.4,7,8-H6CDF-13C12 72 85 85 86 73 79 1,2,3,6.7,8-H6CDD-13C12 74 88 88 91 76 80 1,2,3,4.6,7,8-H7CDF-13C12 82 86 86 83 71 78 1,2,3.4,6,7,8-H7CDD-13C12 75 89 89 81 68 79 OCDD-13C12 84 108 108 94 75 91

2,3,7,8-C14-Dibenzofuran (DI pg <3.9 1100 105 <2.0 20 11 2,3,7,8-C14-Dibenzo-p-dioxin 4.3 1100 109 <2.6 <2.5 <3.7 1,2,3,7,8-C15-Dibenzofuran <9.6 2900 114 <2.1 4.0 <6.5 2,3,4,7,8-C15-Dibenzofuran 17 3500 139 <2.3 <5.0 <7.1 l,2,3,7,8-C15-Dibenzo-p-diox 12 2700 110 <2.9 <3.6 <4.2 1,2,3,4.7,8-C16-Dibenzoruran 11 2400 97 <1.4 8.2 5.2 1,2,3,6.7,8-C16-Dibenzofuran 14 2600 102 <1.4 4.5 3.0 2,3,4,6.7,8-C16-Dibenzofuran <14 2500 100 <1.7 10 <2.7 1,2,3,7,8,9-C16-Dibenzofuran 29 2500 98 <2.0 <2.5 <3.3 1,2,3,4.7,8-C16-Dibenzo-i^di, <9.1 2700 108 <4.6 <2.4 <2.6 1.2.3.OF.8 ('Ih I )i Ix-iizo I' ds 14 2600 105 <4.5 <3.4 <2.6 1,2,3,7,8,9-C16-Dibeiizoi>di< 22 2600 102 <4.4 <2.3 <2.5 1,2,3,4.6,7,8-C17-Dibenzofur: 18 2600 104 <1.8 21 33 1,2,3,4.7,8,9-C17-Dibenzofur^ 25 2400 97 <2.5 <3.1 <2.8 l,2,3,4,6,7,8-C17-Dibenzo-p-i 26 2600 103 3.9 48 35 1,2,3,4.6,7,8,9-C18-Dibenzofi 67 4400 87 3.5 33 53 1,2,3,4.6,7,8,9-C18-Dibenzo-] 65 4900 99 16 390 320

2,3,7,8-TCDF (DB225) pg 13 <6.5 Internal Recoveries % 2,3,7,8-TCDF-13C12 88 81

I'EQ based on Nato bactors pg 28.9 0.06 5.6 3.0

TEQ's converted into appropriate units iiy/iir 1.39 0.000 0.000 0.003 0.269 0.144 (a 209 cm’ area was wiped)

Rncninicennntn:npnhninininpn □AnnDaninyntnincDanin

CITY_21MC100_003221030

NYC-WTC_000234499