195 document results

Summary Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.

TYPICAL ASBESTOS DUST LEVELS INSIDE BUILDINGS^® Levels of asbestos found from testing of a large number of interiors with or without asbestos building materials and/or asbestos contamination problems

Summary Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.

TYPICAL ASBESTOS DUST LEVELS INSIDE BUILDINGS^ Levels of asbestos found from testing of a large number of interiors with or without asbestos building materials and/or asbestos contamination problems

Summary Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.

CAA) asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP) specifically require the removal of asbestos-contaminated carpet.

Summary EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.

Region 2 reverses 1% standard for settled asbestos dust EPA Region 2 has recently reversed their position that 1% asbestos in dusts is the benchmark for the WTC cleanup.

Summary Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.

In the days after Sept. 11, federal officials repeatedly referred to two "standards," one for asbestos in dust and debris and another for asbestos fibers in air.

Summary Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.

These guidelines are for carpet that is only contaminated with low levels of asbestos, as well as carpet defined as “asbestos containing” having over 1% asbestos.

Summary Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.

In the days after Sept. 11, federal officials repeatedly referred to two "standards,” one for asbestos in dust and debris and another for asbestos fibers in air.

Summary Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.

1% asbestos content standard. 44.

Summary EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.

EPA took its airborne asbestos readings outdoors where the air is diluted.

Summary Memorandum detailing procedures for asbestos wipe sampling in Lower Manhattan and estimating associated cancer risks from dust exposure.

The OSHA method requires reporting only of single fibers, not structures of asbestos (bundles and clumps of asbestos).

Summary Technical memorandum from EPA discussing ultrasonication testing for asbestos in carpets and HEPA vacuuming effectiveness.

US EPA (April 18,1989) Interim Asbestos NESHAP Enforcement Guidance - “Friable asbestos” 1% by Area of Volume vs. 1% by Weight.

Summary Forwarded EPA memorandum dated June 9, 2002, concerning the Asbestos Reservoir and carpet testing methods.

These guidelines are for carpet that is only contaminated with low levels of asbestos, as well as carpet defined as “asbestos containing” having over 1% asbestos.

Summary EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.

These guidelines are for carpet that is only contaminated with low levels of asbestos, as well as carpet defined as “asbestos containing” having over 1% asbestos.

Summary EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.

The OSHA method requires reporting only of single fibers, not structures of asbestos (bundles and clumps of asbestos).

Summary EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.

Situations Involving Asbestos.

Summary Memorandum comparing asbestos data in Manhattan to other sites and arguing for cleanup under the Superfund statute.

asbestos fibers to become airborne.

Summary EPA memorandum addressing World Trade Center asbestos contamination status and agency efforts to provide information on the situation.

Some, but not all of the asbestos was removed in a later abatement program. NYC-WTC_000140138

Summary EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.

PCM cannot distinguish asbestos fibers from non-asbestos fibers.

Summary EPA memorandum on wipe sampling methods for asbestos in Lower Manhattan buildings, resuspension projections, and cancer risk estimates from WTC dust exposure.

Thus, the studies of humans using PCM measurements may actually have overestimated true asbestos exposures because they included non-asbestos fibers.

Summary Memorandum detailing procedures for asbestos wipe sampling in Lower Manhattan and estimating associated cancer risks from dust exposure.

Thus, the studies of humans using PCM measurements may actually have overestimated true asbestos exposures because they included non-asbestos fibers.