Lucinda Minton Langworthy

Cindy is recognized for her knowledge and experience on matters concerning federal air quality standards under the Clean Air Act. For over 30 years, she has advised clients in complex administrative proceedings to set and implement such standards and in related litigation in federal courts. Cindy’s ability to understand and interpret scientific evidence concerning effects of air pollution on public health and the environment enables her to assist companies and trade groups in advocating for reasonable and effective National Ambient Air Quality Standards (NAAQS) both before federal agencies and in court. Her knowledge of the bases for these standards allows her to provide advice on implementing them in ways that ensure the standards are met without unnecessarily burdening businesses. Cindy also assists companies faced with investigations or enforcement actions to understand and rebut claims that emissions from particular facilities endanger health or the environment.

• Represents industrial clients in numerous rulemakings by the Environmental Protection Agency to establish, review, and implement National Ambient Air Quality Standards for ozone, particulate matter, sulfur dioxide, and nitrogen dioxide.
• Represents industrial clients in myriad federal court proceedings concerning review, revision, and implementation of National Ambient Air Quality Standards.
• Litigates and counsels clients on the significance of specific scientific publications reporting associations between industrial air pollutants and health or environmental effects.
• Advises industrial clients concerning regulatory requirements related to implementation of federal air quality standards.

• Recognized as 2021 Environmental Group of the Year, Law360, January 2022
• 2021 and 2017 Chambers USA Environment Law Firm of the Year
• Listed for Environment: Regulatory, Legal 500 United States, 2016
• Selected as a Super Lawyer for Environmental Law, Washington DC Super Lawyers magazine, 2013-2019

• Member, Section on Energy, Environmental and Resource Law, and Section on Environmental Law, American Bar Association
• Member, Air & Waste Management Association
• Member, American Chemical Society