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Indiana Department of Environmental Management

IDEM > About > IDEM Organizational Structure > IDEM Senior Staff Bios IDEM Senior Staff Bios

Carol S. Comer

Title: Chief of Staff

Degree(s): Bachelor of Science in Business from Indiana University at Indianapolis; Master of Public Administration in Environmental Management from Indiana University at Indianapolis; Doctor of Jurisprudence from Indiana University School of Law at Indianapolis; Environmental Law Fellowship, Indiana University School of Law at Indianapolis.

Special license(s): N/A

Experience: Almost a decade in privdsnemis.jpgate practice in Indiana and Arizona representing companies on environmental and utility matters, including insurance recovery, real estate and corporate environmental due diligence, cost recovery for cleanup sites, solid waste, air and water permit appeals, hard rock mineral mining, underground storage tank upgrades and removal, cleanup oversight, and defense against agency actions. Recently served as an administrative law judge presiding over utility and tax matters.

Donald M. Snemis

Donald M. Snemis

Title: Assistant Commissioner, Office of Legal Counsel and Criminal Investigations

Degree(s): Bachelor of Arts in Political Science from Ball State University; Doctor of Jurisprudence from the University of Notre Dame.

Special license(s): N/A

Experience: More than 25 years’ experience in private practice, including more than 15 years’ experience in environmental law. Has represented companies, municipalities and citizens in state and federal courts across the country on business and environmental issues including the cleanup of historical water and soil contamination, accidental releases, property transfers, leaking underground storage tanks, cost recovery, and brownfields redevelopment. Most recently, served as Commissioner of the Indiana Bureau of Motor Vehicles and Special Counsel for the Indiana Family and Social Services Administration.

Valerie Tachtiris

Title: Deputy Assistant Commissioner, Office of Legal Counsel and Criminal Investigations

Keith Baugues

Title: Assistant Commissioner, Office of Air Quality

Degree(s): Bachelor of Science in Biological Engineering from Rose-Hulman Institute of Technology

Special license(s): Professional Engineer

Experience: 37 years of experience working on air pollution issues; six years with the Indiana Air Pollution Control Division; nine years with the U.S. Environmental Protection Agency, 1 year with Region VI, eight years with the Office of Air Quality Planning and Standards; twenty two years as environmental consultant in Illinois, Texas, Colorado and Indiana.

Roger Letterman

Title: Deputy Assistant Commissioner, Office of Air Quality

Degree(s): Associate of Applied Science in Agriculture, Matanuska-Susitna Community College; Bachelor of Science in Public Affairs, Indiana University

Special license(s): N/A

Experience: 22 years with IDEM; 3 years as a RCRA permit writer in the Office of Solid and Hazardous Waste Management; 19 years in the Office of Air Quality working in the Permits Branch developing Indiana’s Title V Operating Permit Program, the Programs Branch as a senior rule writer and the Compliance and Enforcement Branch including 4 years as a Section Chief.

Bruce Palin

Title: Assistant Commissioner, Office of Land Quality

Degree(s): Bachelor of Science in Engineering from Rose-Hulman Institute of Technology

Special license(s): Professional Engineer

Experience: 31 years of experience working on solid waste environmental programs; Chief of the Technical Support and Solid Waste Compliance Branch; chief of engineering; solid waste landfill permit reviewer; field inspector; served as the Indiana representative on the Midwest Low-Level Radioactive Waste Compact since 1988; two-time recipient of an IDEM Environmental Excellence Award

Peggy Dorsey

Title: Deputy Assistant Commissioner, Office of Land Quality

Degree(s): Bachelor of Science in Wildlife Science from Purdue University

Special license(s): Certified hazardous materials manager; formerly held licenses in municipal and industrial wastewater treatment, asbestos management and all five licenses for underground storage tank management

Experience: 25 years of environmental experience spent in the private sector and in city, county and state governments

Bruno Pigott

Title: Assistant Commissioner, Office of Water Quality

Degree(s): Master of Environmental Affairs from Indiana University; Bachelor of Arts from Michigan State University

Special license(s): N/A

Experience: Chief of the Permits Branch, Compliance Branch and the State Revolving Fund Section for the Office of Water Quality

Martha Clark Mettler

Title: Deputy Assistant Commissioner, Office of Water Quality

Degree(s): Master of Planning in Environmental Planning from Indiana University; Bachelor of Science in Public Affairs from Indiana University

Special license(s): N/A

Experience: At IDEM since 1995; chief of the Watershed Planning Branch; chief of the Ground Water Section

Niles Parker

Title: Deputy Assistant Commissioner, Office of Compliance Support

Degree(s): Master of Arts in Natural Resources from Ball State University in Muncie, IN; Bachelor of Science in Business Administration and Marketing from Drexel University in Philadelphia, PA.

Special license(s): N/A

Experience: 28 years of energy and environmental experience in working with the IN Department of Natural Resources in mine reclamation and grants management, the IN Department of Commerce in energy and community development and the IN Department of Environmental Management in planning and assessment, public records and compliance support.