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Asbestos Air Sampling Results Summary, Oct 2001

Machine-extracted title · confidence 95%

Summary of asbestos air sampling results from October 1, 2001, including PCM and TEM standard comparisons for NYC and NJ locations.

NYC-WTC_000130435–000130437

Folder label: “E-Mail 1/2/02

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NYC 9/11 Public Portal Document

U.S. Environmental Protection Agency Air / Bulk / Wipe/ Water Sampling Situation Report Monday, October 1, 2001 (3:00 pm)

Fixed Ambient Air Sampling Locations (Asbestos) • NYC / ER (Sept 28, 12 noon - 12 midnight)

0 6 of 17 samples were above the NYC reentry standard for PCM. All 17 samples were below the TEM standard.

• NYC / ER (Sept 29, 12 midnight - 12 noon) 0 7 of 16 samples were above the NYC reentry standard for PCM. 2 of the 16 samples were above the TEM standard (Locations E and K).

• NJ (Sept 29, 9:45AM - Sept 30, 10:30AM) 0 All 4 samples were below both the PCM and TEM standards.

Landfill Air Sampling Locations • Fresh Kills (Sept 29, 7:00AM - 7:00PM) - Asbestos o All 11 samples were below both the PCM and TEM standards. • Fresh Kills (Sept 28, 29) - Particulate Monitoring o Nothing of significance to report based on average daily concentrations. o No data collected on Sept. 27, 30, and October 1 due to weather conditions.

Ambient Air Sampling Locations (Metals) • NYC / ER (Sept 27) o Ten samples collected. o 1 sample exceeded the National Ambient Air Quality Standard (1.5 ug/m3 based on a 24 hour, 3 month period) for lead at Barclay/West Broadway, however does not exceed the NIOSH standard. o Lead level lower than sample previously taken at that location (and two other locations). o Chromium levels were identified at 9 locations above the EPA Removal Action guidance levels. However, all levels were below the removal action level adjusted to a 1-year exposure duration and do not exceed the most conservative NIOSH chromium standard (1 ug/m3). o Although the lead and chromium levels are elevated, they are not a short-term concern. 0 Regulatory standards and guidelines for lead and chromium are based on long-term exposure.

Ambient Air Sampling Locations (TAGA - volatile organics) • NYC / ER (Sept 30) o Benzene exceeded OSHA TWA PEL (0.5 ppm) at two locations on the debris pile in the plume at ground level (across from Liberty/Greenwich).

NYC-WTC 000130435

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NYC-WTC_000130435Source: NYC Law Department, mirrored locally

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