Carroll 'Mack' McGuffey III

Career

Mack focuses his practice on all aspects of the Clean Air Act. He helps clients obtain needed permits, solve compliance challenges, participate in rule and policy making activities, and minimize enforcement risk. In doing so, he helps bridge the gap often found between legal requirements and technical realities. Mack has practiced almost exclusively in the area of air law since starting his practice in 2003.

For more than 20 years, Mack has represented electric utility, landfill, manufacturing, and other industrial clients in connection with important air quality issues arising out of federal and state regulations governing the construction and operation of stationary sources of air emissions. He also has extensive experience in litigation over air regulations. Mack has represented his clients’ interests in many of the most significant air law cases over the last decade, including successful challenges to the New Source Review Tailoring Rule, the Mercury and Air Toxics Standards, and the Clean Power Plan.

Mack has direct and extensive experience with the most controversial Clean Air Act programs. In addition, Mack has assisted numerous clients with lesser-known Clean Air Act programs, including those that regulate ozone-depleting substances used in refrigerant appliances, hazardous air pollutants emitted by reciprocating internal combustion engines, and nonhazardous secondary materials combustion.