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New EPA Regulations: Understanding NESHAP for HON MACT's Synthetic Organic Chemical Manufacturing Industry

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The US Environmental Protection Agency (EPA) has issued updated National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Synthetic Organic Chemical Manufacturing Industry and Group I & II Polymers and Resins Industry, effective since March 28, 2024.

What is the purpose of the updated National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Synthetic Organic Chemical Manufacturing Industry?

The updated National Emission Standards for Hazardous Air Pollutants (NESHAP) for the Synthetic Organic Chemical Manufacturing Industry aims to reduce emissions of hazardous air pollutants from more than 200 U.S. facilities, thereby improving environmental health and safety standards in this sector.

What industries does the new rule impact

The new EPA regulations introduce changes to 40 CFR 63 Subparts F, G, H, and I, impacting more than 200 U.S. facilities in the Synthetic Organic Chemical Manufacturing Industry (SOCMI) and Group I & II Polymers and Resins Industry (P&R I and P&R II).

When was the content of the rule released to the public

The content of the rule was released to the public on April 9, 2024.

What is the deadline for an affected facility to start fenceline monitoring?

An affected facility must commence fenceline monitoring within two years after the date of publication in the federal register, except for P&R I affected sources producing neoprene, which must begin chloroprene fenceline monitoring no later than 150 days after the publication date.

What method is used for determining the concentration of ethylene oxide and vinyl chloride

Method 327, a canister-based method, is used for determining the concentration of ethylene oxide and vinyl chloride.

What facilities must implement ongoing fenceline monitoring

Facilities that use, produce, store, or emit any of six air toxics must implement ongoing fenceline monitoring, which will consist of collecting and analyzing samples using Method 325A/B (passive adsorbent tubes) and/or Method 327 (canisters).

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