Text Size
Increase text size
Increase text size

Frequently Asked Questions

A Brownfield site is a real property, the expansion, redevelopment or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant or contaminant.


The Brownfields program provides public and private property owners with the resources needed to facilitate the cleanup, transfer and redevelopment of historically contaminated properties in Colorado.  This program offers assistance in the form of environmental site assessments, tax credits, revolving loans and a imited amount of statewide project funding.  Remediation of sites in the program is usually managed through the Voluntary Cleanup program.


Colorado Brownfields Program  


No, the Division does not maintain a list of contaminated or Brownfields sites.  Sites identified for assistance from the Brownfields program are managed and cleaned up through the Voluntary Cleanup process.  A list of Voluntary Cleanup sites is maintaind on the Division's website.


Colorado Voluntary Cleanup Program 


The Voluntary Cleanup program was designed to facilitate the redevelopment and transfer of contaminated properties by providing timely review of cleanup plans submitted by property owners of historically contaminated sites.  Program staff assess whether the plan will adequately protect human health and the environment based on the site's contaminant levels and proposed land use.  Cleanup begins once Program staff accept the plan.  It is up to the property owner to self-certify that cleanup is complete and the plan's goals have been met.


Colorado Voluntary Cleanup Program



The best way to obtain information on one or more Voluntary Cleanup sites is to make a Colorado Open Records Act (CORA) request to review the Division's files.  If you still have questions after you have conducted your records review, program staff may be able to assist you depending on the age of the project.


Records Review  


In parts of Western Colorado, uranium mill tailings were historically used in place of more expensive sand or aggregate in concrete mix, bedding for utility lines, backfill around new construction and in building materials like brick and stucco.  Use of these materials increased potential exposure to gamma radiation and radon gas, and poses a long-term health concern.  Although many properties have been cleaned up, many properties have yet to be remediated.  Property-specific assistance to determine if your property may have been impacted can be obtained from the Uranium Mill Tailings Remedial Action (UMTRA) Program at the Colorado Department of Public Health and Environment's Grand Junction office.


Mike Cosby, Project Manager  970-248-7171

Kate Elsberry, Program Assistant  970-248-7164


Uranium Mill Tailings in Western Colorado website



To determine if a particular property has or had environmental contamination that the Division has been made aware of, or to review inspection and enforcement reports, you can make a Colorado Open Records Act (CORA) request to review public files associated with the property's address.  The Division will review your request to determine if we have any files on that address and if so, set up an appointment with you to review the files.  If you wish to review files for another division (Air, Water, etc.), you must contact each division individually.


Records Review


Hazardous Waste


The Division posts quarterly inspection and enforcement reports online listing hazardous waste facilities that have been inspected in the past year.  For more complete information regarding the compliance history of a hazardous waste site or facility, visit U.S. EPA's Enforcement and Compliance History Online (ECHO) website at www.epa.gov/echo/ .  This site contains information on hazardous waste facilities in Colorado and other states.



The Division offers several resources to help you understand the regulations and how they apply to you.  We have a wide array of guidance and policy documents available online 24 hours a day, including summaries of notifications, certifications, registrations and permits as they apply to our various programs.  Our Customer Technical Assistance line is available 8 am - noon, Monday through Friday to answer questions about the regulations and to provide general regulatory interpretations. In addition, our technical staff are available to provide site-specific answers and interpretations.  If you generate smaller quantities of hazardous waste, you may want to take advantage of our onsite Generator Assistance Program where one of our hazardous waste inspectors provides guidance and tips for you to get into and stay in compliance with the regulations during a non-enforcement site visit.  Finally, the Division offers workshops and other trainings throughout the year designed to clarify the regulations and provide an open forum for questions.


Guidance and Policy Documents


Customer Technical Assistance Program


Contact our Technical Staff


Generator Assistance Program


Learning Opportunities and Assistance


Spills and releases to the environment should be reported to the statewide toll-free Colorado Environmental Release and Incident Reporting line at 1-877-518-5608.  Information on other reporting requirements can also be obtained.


Environmental Spill Reporting Guidance Document pdf file

Environmental Spill Reporting Brochure pdf file