VOC sampling locations table for Ground Zero area, Jan 2002

NYC 9/11 Public Portal Document

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Figure 8. ORD-modeled WTC plume dispersion for September 13,2001 at 9:00 a.m. Note the increased hourly PM2 5 concentrations depicted in red for PS 64 (166 pg/m’) and PS 199 (100 pg/m’) NYSDEC monitoring stations, consistent with the E/NE direction of the modeled plume dispersion and likely touchdown of the plume at those and intervening sites but not at sites further E, SE, or to the N.

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Figure 9. ORD-modeled WTC plume dispersion on September 14,2001 at 12 noon, indicative of plume flow mainly out over New York Harbor.

DRAFT-DO NOT QUOTE OR CITE 49 October 2002

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