Associate firm Spencer Fane Britt & Browne, Kansas City, 1980-1986. Partner Spencer Fane Britt & Browne LLP, since 1987, chair environmental practice group, since 1994, member executive committee, 1997—2009. Member Brownfields Commission, Kansas City, since 1999.
Member steering committee Kansas City Bi-State Development Agency Brownfields Initiative, since 1997.
Member American Bar Association (council section environ, energy and resources 1992-1995, vice chairman solid and hazardous waste committee 1985-1990, chairman 1990-1992, chairman brownfields task force 1995-1997, vice chairman environmental transactions and brownfield committee 1998-2000, vice-chairman state & regional cooperation committee, since 2007, vice chairman ethics, since 2010), Missouri Bar Association, Kansas City Metropolitan Bar Association (chairman environmental law committee 1985-1986, 2007-2008), Greater Kansas City Chamber of Commerce (co-chair Brownfields Working Group, 1996-1998, chairman energy and environmental committee 1987-1989).