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  2. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    The NIOSH-provided classifications only cover the filtration of particles or aerosols, not the air-purifying respirator's ability to remove chemical gasses and vapors from air, which is regulated under 42 CFR 84 Subpart L. For chemical cartridge classifications, NIOSH, under 42 CFR 84, partially defers to American National Standard ANSI K13.1-1973.

  3. National Emissions Standards for Hazardous Air Pollutants

    en.wikipedia.org/wiki/National_Emissions...

    The National Emission Standards for Hazardous Air Pollutants (NESHAP) are air pollution standards issued by the United States Environmental Protection Agency (EPA). The standards, authorized by the Clean Air Act, are for pollutants not covered by the National Ambient Air Quality Standards (NAAQS) that may cause an increase in fatalities or in serious, irreversible, or incapacitating illness.

  4. Code of Federal Regulations - Wikipedia

    en.wikipedia.org/wiki/Code_of_Federal_Regulations

    For example, 42 C.F.R. § 260.11(a)(1) would indicate "title 42, part 260, section 11, paragraph (a)(1)." Conversationally, it would be read as "forty-two C F R two-sixty point eleven a one" or similar. While new regulations are continually becoming effective, the printed volumes of the CFR are issued once each calendar year, on this schedule:

  5. Terrain awareness and warning system - Wikipedia

    en.wikipedia.org/wiki/Terrain_awareness_and...

    Findings from these early studies indicated that many such accidents could have been avoided if a GPWS had been used. As a result of these studies and recommendations from the U.S. National Transportation Safety Board (), in 1974 the FAA required all 14 CFR 121 (Part 121) certificate holders (that is, those operating large turbine-powered airplanes) and some 14 CFR 135 (Part 135) certificate ...

  6. Rapanos v. United States - Wikipedia

    en.wikipedia.org/wiki/Rapanos_v._United_States

    Rapanos v. United States, 547 U.S. 715 (2006), was a United States Supreme Court case challenging federal jurisdiction to regulate isolated wetlands under the Clean Water Act.

  7. National Historic Preservation Act - Wikipedia

    en.wikipedia.org/wiki/National_Historic...

    The Section 106 Process is further explained and defined in 36 CFR 800. Meeting four times a year, the Advisory Council on Historic Preservation consists of 23 members from both public and private sectors, with the chairman appointed by the president. [ 18 ]

  8. List of rail accidents (1990–1999) - Wikipedia

    en.wikipedia.org/wiki/List_of_rail_accidents...

    Eight of the dead were killed by smoke and flames possibly ignited by oil pot switch heaters. This led to the FRA instituting the Delay in Block Rule, and also was a major impetus for the Passenger Equipment Safety Standards regulation (49 CFR Part 238). Weyauwega derailment aftermath, March 5, 1996.