Colorado Department of Public v. United States, et al, No. 09-1554 (10th Cir. 2012)
Annotate this Case
Congress authorized the State of Colorado to regulate hazardous wasted in the state. Invoking that regulatory authority, Plaintiff-Appellant Colorado Department of Public Health and Environment, Hazardous Materials and Waste Management Division (“Colorado” or “CDPHE”), declared the chemical weapons stored at an Army weapons depot near Pueblo awaiting destruction to be hazardous waste. In this action, Colorado sought to enforce its regulation prohibiting storage of any hazardous waste against the Depot. The specific question presented by this appeal was whether Congress’s mandate that the Army destroy these chemical weapons at the Depot by 2017 preempted Colorado’s enforcement against the Depot of its regulation prohibiting storage of any hazardous waste. Ultimately, the Tenth Circuit was persuaded by the "detailed manner with which Congress has addressed and mandated the destruction of the chemical weapons stored at the Depot to conclude that that federal law preempts Colorado’s attempt to regulate that destruction process by enforcing its prohibition of the storage of hazardous waste against the Depot."
Sign up for free summaries delivered directly to your inbox. Learn More › You already receive new opinion summaries from Tenth Circuit US Court of Appeals. Did you know we offer summary newsletters for even more practice areas and jurisdictions? Explore them here.
Some case metadata and case summaries were written with the help of AI, which can produce inaccuracies. You should read the full case before relying on it for legal research purposes.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.