VOC sampling locations table for Ground Zero area, Jan 2002

NYC 9/11 Public Portal Document

Table 1. Description of Samples Used in WTC2001 Study WTC Site Samples Experiment Sample Collection Location, Description Size Total Weight Extracted Wt., Code Date Fraction on Filters % Extracted A,C WTC 8 9/12/2001 Beekman Street - filters # 9, #14 PM2.5 53.316 mg 46.70 mg 0.4 miles E of Ground 0 center 87.6% A,C WTC 11 9/12/2001 55 Church Street - filters #13, #14, #15 PM2.5 50.097 mg 29.79 mg In front of Millenium Hilton Hotel 59.5% 0.1 miles E of Ground 0 center A,C WTC 13 9/12/2001 Church & Liberty St. - filters #4, #5 PM2.5 51.006 mg 46.29 mg 0.1 miles SE of Ground 0 center 90.8% A,C WTCB 9/13/2001 Trinity & Rector - filter #4 PM,.5 52.969 mg 42.31 mg From a car hood and windshield 79.9% 0.25 miles S of Ground 0 center A,C WTCC 9/13/2001 Winter Garden Park - filters #4, #7 PM,.5 54.285 mg 47.67 mg From a park bench facing the Hudson 87.8% 0.2 miles WNW of Ground 0 center A,C WTCE 9/13/2001 Murray & Greenwich - filters #5, #6 PM2.5 49.919 mg 45.13 mg From a window ledge 90.4% 0.25 miles NNE of Ground 0 center A,C WTCF 9/13/2001 Inside 120 Broadway - filters #2, #12 PM,.5 53.600 mg 38.73 mg From a marble staircase with no footprints 72.3% 0.25 miles SE of Ground 0 center B WTC 3 9/12/2001 23 Park Row - Ground sample in front of PM <53 21.521 g sieved - not J&R Electronics (across City Hall Park) sieved material further 0.3 miles E of Ground 0 center fractionated

Control PM Samples Experiment Sample Collection Description Size Weight Extracted Wt., Code Date Fraction Available % Extracted C NIST 1976-1977 NIST Standard Reference Material 1649a PM,.5 47.984 mg 39.33 mg (Urban Dust collected in Washington DC) 82.0% A MSH 1980 Mt. St. Helens ash, Washington State, from PM33 >10g previously size- Graham et al., 1985 separated A ROFA 1994 Residual oil fly ash, ROFA Sample 3 from MMAD: >2g milled - not Kodavanti et al., 1998 2.665 extracted

was gently removed with forceps and excess liquid was were frozen at -80 °C prior to lyophilization. Holes were drained from the filter into the cup. Filters were placed poked in the parafilm of the pooled sample, while the caps back in their petri dishes, allowed to dry, and were on the 15 ml individual site sample tubes were loosened. dessicated before reweighing to determine quantity Samples were lyophilized for 2 days at -55 °C and 140 extracted (i.e. removed) from the filters (Table 1). The mtorr (Virtis Company, Gardiner, NY). After suspension of PM was thoroughly mixed, the pH was lyophilization, samples were stored at 4 °C until determined, and 10 ml was pipetted from each of the 7 resuspension in sterile saline on the day of use in samples into a single sterilized 150 ml Erlenmeyer flask on oropharyngeal aspiration. ice to make a pooled sample (WTCX). The pH of the pooled sample was also determined. Of the remaining C. Control PM Samples Used in WTC2001 Study amount from each individual sample, 1 ml was taken for In order to assess toxicity of WTC PM2 5, pooled and endotoxin analysis, and the remainder was pipetted into individual site samples were compared with three other sterile 15 ml polystyrene tubes. well-characterized PM2 5 samples. Standard Reference The flask containing the pooled sample was covered Materials (SRM) are extensively characterized samples with parafilm, and the pooled and individual site samples available from the National Institute of Standards and

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NYC-WTC_000149148