COR400000 Construction Stormwater Discharge Permits

COR400000 Construction Stormwater Discharge Permits
Click here for information on the COR400000 permit renewal


CEOS Login - All permittees must use this electronic application portal for new construction stormwater permits, modifications, transfers and terminations.

How To Find An Issued Certification  

If you have a CEOS account, you’ll find your certification on your dashboard. Otherwise, certifications that have been issued are available in the electronic records drawer
Under search type, select CDPHERM WTR CW Search. Under CDPHERM Container, type in the certification number that begins with ‘COR4’.
If you are having difficulty finding your permit, please use the user guide.

If you don't know your new permit number issued after April 1, 2019? Please check this list.

CEOS Help Documents

New CEOS Transfer Application Process

Memo for transferring signatures

Construction Stormwater Permittees - Welcome to CEOS letter.
CEOS Help Guide (Condensed version).
CEOS Help Guide (Full version).
CEOS Frequently Asked Questions (FAQ).
CEOS Permit Actions (Guide).
CEOS Stormwater RO FAQ update (RO FAQ).
CEOS tutorial for owner, operator, and preparer (Tutorial).
For additional CEOS support, please contact us at:  
For questions on the application, email: Permits Phone: 303-692-3517
For questions on how to setup a user account, if you get locked out or need to manage the system, email:
Information on qualifying local programs for Durango, Golden, and Lakewood
The following is information for permitting of small construction activities located in one of the listed cities. If the total disturbed area is under 5 acres and is not part of a larger common plan of development of 5 acres or more, please inquire with the applicable city regarding obtaining permit coverage without submitting an application to the Water Quality Control Division.
Sign up to receive email updates
Email list for permittees and stakeholders to receive information on new guidance documents, CEOS and other updates.
Limited waivers may be available for the eReporting rule.
For questions on who needs a permit, please contact:
Randi Johnson-Hufford - Unit I Permitting Manager
Temp phone: 720-251-4828
For questions on how to comply with the permit, please contact:
Phone: 303-692-3517