No Change to NAAQS for Ozone, Particulate Matter
EPA announced its final decision to retain the primary and secondary NAAQS for particulate matter on December 18.
The final decision to retain the NAAQS for ozone was announced on December 23. The decision was proposed in August 2020.
What Are NAAQS?National Ambient Air Quality Standards (NAAQS) are protective limits on the volume of six “criteria pollutants” in the air we breath. The six criteria pollutants are nitrogen oxide, sulfur dioxide, carbon monoxide, lead, ozone, and particulate matter (PM).
The Clean Air Act requires EPA to review the NAAQS for each of the six criteria pollutants once every five years and, if necessary, adjust them. In areas where pollution levels rise above the NAAQS (i.e., “non-attainment areas”), facilities face more stringent requirements for building or modifying sources of air pollution.
Read more: Quick Guide to National Air Quality Standards
What is Ozone?Ground-level (“tropospheric”) ozone is harmful to human health and the environment. A primary factor in the creation of smog, ozone forms when nitrogen oxides and volatile organic compounds (VOCs) react with heat and sunlight.
Breathing ozone can harm lung tissue and exacerbate respiratory maladies like bronchitis, emphysema, and asthma. Ozone can kill plants, as well, by negatively impacting photosynthesis and increasing plants' sensitivity to disease, insect damage, and severe weather.
EPA lowered the NAAQS for ozone to 70 parts per billion (ppb) in 2015.
What is Particulate Matter?Particulate matter (PM) is generic term used to describe a class of particles that can originate from both man-made sources (e.g., coal-fired power plants) and natural sources (e.g., forest fires).
These particles vary in size and EPA categorizes them as follows:
- Course particulates (PM10) are particulates 10 microns or smaller
- Fine particulates (PM2.5) are particulates 2.5 microns or smaller
EPA’s Back-to-Basics Approach to NAAQS ReviewsIn 2018, EPA released a memo that listed five “back to basics” principles for NAAQS reviews. Number one on the list was to meet statutory deadlines, something EPA has struggled with historically.
Complete EPA Regulations Training - Jan. 26–27Managing site compliance with the many complex EPA programs that affect your business is a major challenge. If you’re new to the field or need an update on changing EPA rules, online training is a convenient way to quickly build in-depth expertise.
Join a Lion instructor for live Complete Environmental Regulations training to identify the EPA rules that impact you. This unique two-day webinar is updated for 2021 to cover new and changing environmental regulations you should know about, including:
- EPA's new Waters of the US (WOTUS) Rule
- Major Lautenberg Law amendments to TSCA
- CSB's new chemical release reporting rule
- The latest Clean Air Act requirements for facilities
Complete Environmental Regulations Online Course
TSCA Regulations Online Course
Tags: Clean Air Act, NAAQS, new rules
Find a Post
Having the tutorial buttons for additional information was extremely beneficial.
Excellent job. Made what is very dry material interesting. Thoroughly explained all topics in easy-to-understand terms.
Lion Technology workshops are amazing!! You always learn so much, and the instructors are fantastic.
Attending Lion Technology classes should be mandatory for every facility that ships or stores hazmat.
The exercises in the DOT hazardous materials management course are especially helpful in evaluating your understanding of course information.
Principal Industrial Hygienist
This was the 1st instructor that has made the topic actually enjoyable and easy to follow and understand. Far better than the "other" training providers our company has attended!
Process & Resource Administrator
My experience with Lion classes has always been good. Lion Technology always covers the EPA requirements I must follow.
Lion is easily and consistently the best option for compliance training. I've learned new information from every instructor I've had.
This is the best RCRA training I've experienced! I will be visiting Lion training again.
Cynthia L. Logsdon
Principal Environmental Engineer
I chose Lion's online webinar because it is simple, effective, and easily accessible.
Environmental Health & Safety Technician
Download Our Latest Whitepaper
Spot and correct 4 of the most common universal waste errors before they result in a notice of violation during a Federal or state inspection.