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VOC sampling locations table for Ground Zero area, Jan 2002

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Table listing volatile organic compound (VOC) sampling sites and dates outside of Ground Zero from September 2001 to January 2002.

NYC-WTC_000148952–000149197

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o o i Table 2. Concentrations (maximum and Sept-Oct average) of PM2 5 and Component Elements Measured at the EPA/ORD CD

TJ o c o o World Trade Center Perimeter Sites and at Four Other Sites in the Northeast U.S. (PM2 5 concentrations in pg/m^; all other CT

components in ng/m’). o' "0 co o 03 WTC Max. (Site, Date) WTC Average Sept-Oct’ NYU Med. Ctr.’ Bronx, NY’ Boston, MA’ Phila, PA’ O A c K Aug '76 Feb-June '00 Feb-June '00 Feb-June '00 o o c PMj^ 400 (A, 10/4) 85 34 50 81.7“ 12.5 10.7 14.7 3 CD 3 Na 870 (A, 10/4) 273 157 169 570 72 178 63 Mg 490 (K, 11/13) 101 67 79 103 4.8 16 7.7 Al 670 (A, 10/20) 198 74 113 187 9.2 25 18 Si 20000 (A, 10/4) 943 224 333 75 92 118 S 23000 (A, 10/3) 4796 1808 2524 6820 1200 933 1500 CI 45000 (A, 10/4) 7247 540 845 119 9.8 68 7.7 K 5600 (A, 9/22) 988 147 260 194 38 38 60 Ca 4900 (A, 10/11) 1304 345 749 38 50 57 Cr 34 (C, 11/19) 5 4 3 28 0.3 0.5 1.1 Fe 9400 (K, 12/12) 1745 904 975 400 91 76 103 Co 24 (A, 10/3) 4 bdl bdl 3.2 0.4 0.4 Ni 50 (K, 12/11) 11 9 11 18 12 2.8 4.4 Cn 2800 (A, 9/22) 435 59 92 2.8 2.2 4.5 Zn 1 [giitii: (A, 10/4) 1526 164 307 224 21 9.7 16 As 1100 (K, 11/14) 9 bdl bdl 3 1.1 0.9 1 Br 5700 (A, 9/20) 800 82 124 133 2.5 2.5 3.4 Pd 900 (A, 10/4) 132 2 7 Cd 150 (A, 9/22 & 10/4) 33 9 9 7.7 1.7 1.7 1.8 Sb 350(A, 9/22) 50 2 1 11 3.6 2.4 3.5 Pb 5500 (A, 9/22) 791 83 167 1170 4.2 3.4 5.6

’A time series of PMj j measurements for Site A (as well as Sites C, K, and 290 Broadway) can be seen in Figure 11. Time series measurements for the

DRAFT~DO NOT QUOTE OR CITE 43 October 2002

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NYC-WTC_000149124Source: NYC Law Department, mirrored locally

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