NYC-WTC_000195928

NYC 9/11 Public Portal Document

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U.S. Environmental Protection Agency (www.epa.gov} Air / Bulk / Wipe/ Water Sampling Situation Report Tuesday, October 23,2001 (3 PM)

Fixed Ambient Air Sampling Locations (Asbestos)

NYC / ER (Oct 18,1200 - 2400 hrs)

O All 18 samples analyzed for the period 1200 to 2400 hrs were below the TEM AHERA standard. O 1 sample was not submitted, o 2 additional samples (Locations U and V) for the period 0001 to 1200 hrs were below the TEM AHERA standard.

NYC / ER (Oct 19, 1200 - 2400 hrs)

AN 19 samples analyzed were below the TEM AHERA standard. O 1 sample (Location P) was not analyzed due to a wet filter.

Landfill Ambient Air Sampling Locations

Fresh Kills (Oct 19, 1800 - Oct 20, 0730) - Asbestos

O All 19 samples analyzed were below'the TEM AHERA standard. O 1 additional sampling location (W Location #12B) was added to monitor the perimeter.

h Kilis (Oct 19) - Dataram

O Nothing of significance to report based on daily average concentrations. O Maximum readings have increased significantly from previous day.

Fresh Kills (Oct 20) - Dataram

O Nothing of significance to report based on daily average concentrations. O Maximum readings have decreased significantly from previous day.

Fresh Kills (Oct 21) - Dataram

□ Nothing of significance to report based on daily average concentrations.

Fresh Kills (Oct 22) - Dataram

O Daily average concentrations have increased.

Ambient Air Sampling Locations

NYC / ER (Oct 21) - Particulate Monitoring (PM2.5)

o Pace University (Site 1) - 24-hr average concentration for this period was 28.86 ug/m\ o Manhattan Boro Comniunitv College (Site 2) - 24-hour average concentration for this period was 29.59

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NYC-WTC_000195928