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Ryan Russell Kemper


St. Louis
314 552 6321 314 552 6321 direct

Ryan is a problem-solver who works to create opportunities for clients dealing with environmental and energy issues, property disputes, commercial litigation, and government regulation and public policy matters.

For over a decade, Ryan has represented clients in litigation, regulatory and transactional matters arising under the full spectrum of federal, state, and local environmental laws. He has successfully handled permit proceedings, civil and criminal enforcement actions, administrative appeals, and a variety of lawsuits throughout the country. His clients include publicly-held companies, utilities, railroads, agricultural services companies, health care providers, cities, nonprofits, and privately held businesses.

Ryan's work for his clients involves a strategic approach that draws on his political and legislative experience at the Congressional and statehouse levels. After establishing a client's ultimate objectives, Ryan identifies the most effective tools for a given issue and then applies those tools in smart and timely ways throughout the matter, whether pursuing negotiation or mediation, marshaling external pressure, initiating government involvement, or engaging in litigation.

Ryan's environmental and energy practice has recently included particular experience with Clean Air Act matters. He has negotiated Title V operating permits, secured state and local construction permits, filed permit and other administrative appeals, drafted comments on various regulations including proposed MACT standards, and represented clients in investigations and enforcement throughout the country. He has also secured favorable regulatory decisions from the EPA for clients with complicated mobile source emissions issues. Additionally, Ryan advises clients with regard to climate change preparedness and sustainability.

In his property practice, Ryan currently handles indemnity and other cost-recovery suits as well as litigation regarding commercial sale and lease agreements. He also advises construction firms and developers on land use and regulatory matters, including questions involving planning, permitting, and zoning.

Ryan is a board member of the United Way of Greater St. Louis and sits on the Board's Public Policy Committee. He also is a longtime member of the United Way's Illinois Division Board and has volunteered for Legal Services of Eastern Missouri for over a decade. Ryan also serves on the school board of his daughters' parochial school and also serves as a Planning Commissioner for the City of O'Fallon, Illinois.

The St. Louis Business Journal honored Ryan as a part of its "40 under 40" class for 2017. He was also named to the 2017-2018 Class of Leadership St. Louis.

Thompson Coburn Publications

EPA incorporates environmental justice into enforcement policy: How can regulated industries prepare?

SEC emphasizes ESG by establishing new website and taking public comments on climate disclosure

New administration, new priorities: Preparing for the Biden-Harris Administration’s key environmental focus areas

EPA Final Rule may keep projects at existing major sources from triggering stringent pre-construction permitting requirements

What to do when the government comes calling: A checklist for handling facility inspections

Environmental deregulation under President Trump: Business as usual?

Supreme Court overturns EPA’s 'Tailoring Rule,' upholds GHG BACT for 'anyway' sources


Ryan R. Kemper, Note,
Responding to Bioterrorism: An Analysis of Titles I & II of the Public Health Security and Bioterrorism Preparedness and Response Act of 2002, 83 Washington University Law Quarterly 385, 2005


"President Obama's Second Term & Energy Agenda";
Gateway Society of Hazardous Materials Managers Spring Seminar, St. Louis, MO, April 2013

"The Client Consultant-Attorney Relationship: Making it Work from Start to Finish";
Crop Production Services' Technology Share Conference, Loveland, Colorado, May 2012

"Accident Investigations: Collecting High Quality Information the Right Way";
Crop Production Services' EH&S Fall Staff Meeting, Providence, Rhode Island, September 2011

"Environmental Reports and Consultant Communications: Tips from a Legal Perspective";
Crop Production Services' Technology Share Conference, Loveland, Colorado, March 2011

"Environmental Law 101: Just the 'Acts'";
Missouri Chamber of Commerce and Industry Environmental Conference at the Lake, Osage Beach, Missouri, July 2010

"President Obama's Green Team and the Administration's Environment and Energy Agenda: One Year Later";
Gateway Society of Hazardous Materials Managers Spring Seminar, St. Louis, MO, April 2010

"Pending Federal Carbon Cap and Trade Legislation- H.R. 2454: The American Clean Energy and Security Act (panelist)";
Leadership Council of Southwestern Illinois Board Meeting, Collinsville, IL, October 2009

"The New Administration: What to Expect from President Obama's Green Team";
Chemical Industry Council of Illinois Seminar: The Musical Chairs Surrounding Air Issues and the New Administration, Willowbrook, IL, March 2009

"USEPA RCRA Enforcement Issues";
Chemical Industry Council of Illinois RCRA Seminar, Fairview Heights, IL, January 2009