SO2 NAAQS: What’s Next?

By Timothy P. Fagan, BLR Air Expert tfagan@blr.com How were nonattainment designations determined? Once the NAAQS was set in 2010, EPA and state agencies worked together using monitoring data to determine what areas should be designated nonattainment and establish the area’s boundaries.  The newly designated nonattainment areas were designated as such because each had air […]

Shutdown of the SSM exemption

What is a SIP and why is it important in this case? A state implementation plan (SIP) is a plan prepared by each state detailing how the state will attain and maintain compliance with each NAAQS.  SIPs contain enforceable emissions limits needed to comply with the CAA and prohibit emissions that would cause or contribute […]

Air Permitting Training: Attainment vs. Nonattainment

By Timothy P. Fagan, BLR Air Expert tfagan@blr.com National Ambient Air Quality Standards (NAAQS) The CAA required EPA to develop NAAQS for six pollutants commonly found throughout the United States.  These pollutants, referred to as “criteria pollutants,” are: Sulfur dioxide; Particulate matter (PM-10 and PM-2.5); Carbon monoxide; Ozone; Nitrogen dioxide; and Lead. For each criteria […]

Air Permits: Where Do You Begin?

Air permits are divided into construction permits and operating permits. Construction permits are usually required when building a new facility or installing and/or modifying a process or piece of equipment. The construction permit defines the air pollution source, establishes emissions limits and indentifies the equipment and/or controls to meet those limits. Applicants must apply for […]