Mat focuses his practice primarily on toxic tort and environmental litigation. He has experience representing both private and public entities before state and federal courts in cases involving claims brought under the Clean Water Act, Comprehensive Environmental Response, Compensation and Liability Act, Resource Conservation and Recovery Act, and state environmental statutes, as well as common law claims such as nuisance, negligence and trespass. He also has experience defending school districts in special education disputes and has counseled public entities and litigated on their behalf with respect to compliance with open records and open meeting laws. Additionally, he has assisted clients with regulatory compliance and environmental audits, as well as air and water permitting issues pending before state and federal agencies.

Mat has significant experience defending claims in federal and state courts. Recently, he secured a jury verdict in federal court on behalf of a municipality that had been sued by a third-party for significant damages. He also contributed his knowledge to defending one of the largest sewer districts in the country in major federal litigation and compliance matters. Additionally, Mat defended the rights of a city to expand its sewer and water services, securing a positive outcome in federal district court and then on appeal to the Eighth Circuit. Pub. Water Supply Dist. No. 3 of Laclede County, Mo. v. City of Lebanon, 605 F.3d 511 (8th Cir. 2010). He has also drafted and argued successful dispositive motions and secured positive outcomes for clients through mediation.

Mat routinely advises on environmental compliance issues and has represented a prominent pipeline company and a separate chemical manufacturer in connection with environmental civil and criminal prosecutions. He has worked on the evaluation and resolution of natural resource damage allegations, and been involved in the management of three separate unilateral administrative orders, state and federal civil enforcement lawsuits, and federal criminal prosecutions charging violations of the Federal Insecticide, Fungicide and Rodenticide Act, Resource Conservation and Recovery Act and Emergency Planning and Community Right-to-Know Act. In addition, Mat has worked with government agencies conducting endangered species and cultural resource surveys for major public construction projects.


Accessing Public Information: FOIA Requests and Open Records Laws, Kansas City, Mo., November 2009.

Climate Change and Sustainability: The Next Wave of Business Regulation and Litigation, Kansas City, Mo., June 2008.