EPA Updates TSCA Inventory, Plans Next Update In Summer 2023. EPA announced that latest TSCA Chemical Substance Inventory is now available on its website. TSCA Inventory is list of all existing chemical substances manufactured, processed, or imported in the United States.
In early January, the U.S. Environmental Protection Agency announced a proposal to revise and strengthen a key national ambient air quality standard (NAAQS) for fine particle pollution,.
On January 6, 2023, the U.S. Environmental Protection Agency (the EPA) released a pre-publication copy of a Proposed Rule, which will lower the annual National Ambient Air Quality.
The US Environmental Protection Agency (EPA) announced a proposal to to revise the primary (health-based) annual PM2.5 standard from its current level of 12.0 µg/m3 to within the range of 9.0 to 10.0 µg/m3. EPA is taking comment on the full range (between 8 and 11 10 µg/m3) included in.
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