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Tacy focuses her practice on water rights, environmental and regulatory matters, land use and real estate. She advises public and private companies on matters relating to due diligence, permitting, wetlands and critical areas regulations, land use regulations and comprehensive plans, and shoreline development. Tacy represents clients in transactions and litigation involving water rights and real estate, and has experience negotiating with regulatory agencies and advising clients on a wide range of federal and state environmental statutes.

Tacy clerked for the Honorable Robert W. Kiesnowski, 17th Judicial District Judge for the Adams County District Court, and the Honorable Mark D. Warner, 17th Judicial District Judge for the Adams County District Court.

Professional Activities

  • American Bar Association 
    • Section of Environmental, Energy, and Resources
    • Young Lawyers Division
  • Colorado Bar Association, Water Law Section
  • Colorado Women’s Bar Association
  • Denver Bar Association
  • King County Bar Association
    • Environmental and Land Use Law Section
    • Business Law Section
    • Pro Bono Services 

News & Insights

News & Insights


"Intro to Washington Water Law," KCBA Environmental & Land Use Section CLE & Networking Social, April 2018

"Ethics For Law Clerks And Judicial Interns," June 2015 


"Significant Water Rights Bill Passes, Alters State Supreme Court Rulings in Hirst and Foster Cases," Foster Pepper News Alert, January 2018

"Petroleum Technical Assistance Program: A New Tool for Cleanup of Contaminated Property in Washington," Foster Pepper News Alert, November 2017

"Winery General Permit: What You Need To Know and Next Steps for Members of the Industry," Foster Pepper News Alert, July 2017

"Acquisition of Water Rights," Update to American Law of Mining, Chapter 113, Rocky Mountain Mineral Law Foundation, February 2017

"New Governance: Can User-Promulgated Certification Schemes Provide Safer, Higher Quality Food?" Food and Drug Law Journal, Volume 68, 77-ii, 2013



  • Washington, 2015
  • Colorado, 2012
  • U.S. District Court, District of Colorado, 2013 
  • U.S. District Court, Eastern District of Washington, 2017
  • U.S. District Court, Western District of Washington, 2017


  • J.D., University of Colorado Law School, 2012
    • Colorado Journal of International Environmental Law & Policy, Editor
    • American Constitution Society, Vice President
    • H. Thomas Austern Memorial Writing Competition, Honorable Mention, 2012 

B.A. University of Southern California (summa cum laude), 2008


  • The Hon. Robert W. Kiesnowski and the Hon. Mark D. Warner, Adams County District Court, Law Clerk, 2013-2015
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