WQ construction compliance assistance and guidance

Permit for stormwater discharges associated with construction activities.

Link to COR400000 Permitting page.

Click here for information on the COR400000 permit renewal

Colorado Stormwater Excellence Program CSEP

• Stormwater Excellence Program fact sheet.
• Stormwater Excellence Program for MS4 fact sheet..
• CSEP Brochure.
• Associated General Contractor's Program web site.
  • Includes a list of current qualified and participating members

Compliance forms

• Permit and compliance forms.
  • ​Forms that apply to all permit types in all sectors: modification, transfer, supplement, change of contact, etc.
• NetDMR reporting information

Compliance assistance guidance documents

• Control measure specification template.
• COR400000 - stormwater management plan guidance.
  • COR400000 - Cumplimiento para un plan de gestión de aguas pluviales.
• COR400000 - Stormwater discharge FAQ - Q and A for common questions regarding COR400000 permit. 
  • COR400000 - Preguntas frequentes.
• Guidance on existing vegetation.
  • Guía para uso de vegetación existente (en español)​.
• Guidance on final stabilization.
  • COR400000 - Guía para lograr la estabilización final.
• Oil & Gas field wide permit guidance.
  • Documento guía: aguas pluviales en obras de petróleo y gas (en español)​.
• Requirements and compliance oversight for permittess covered by a qualifying local program.
• Stormwater inspection report template.
• Stormwater management plan content checklist.
• Guidance for the Diversion of State Waters.
  • COR400000 - Directrices sobre el desvío de aguas estatales.

Discharge without a permit - policies and guidance documents applicable to the construction sector

• Low risk discharges, Water Quality Policy 27.
• Snow melting guidance.
• Discharge of potable water guidance.
• Discharge of uncontaminated groundwater to land guidance.
• Discharges of surface cosmetic power washing operations to land guidance.
• Discharge from water-based fire suppression systems, Clean Water Policy 5.
  • ​Guidance for discharges associated with fire suppression systems.
• Trail Building.

​​Colorado House Bill 12-1119

• November 30, 2012 Report to the General Assembly in accordance with Colorado House Bill 12-1119.
  Efforts to develop a more streamlined process for preventing violations and enforcing regulations and permits for stormwater discharges associated with construction activities.
• June 1, 2016 Updates based on HB 15-1249.

Noncompliance Notifications

• Policy and Guidance for Noncompliance Notification under COR400000.
• COR400000 Construction Stormwater Permit Noncompliance Form Guidance and Tips.

Please use the link below to submit your 24 hour notification and 5-day report for noncompliance related to the COR4000000 Construction Stormwater General Permit. This form should not be used to report spills that meet reportable quantity criteria or reach a state water. Those events should be reported to the spill hotline at 1-877-518-5608.

• Construction Stormwater Permit Noncompliance Form.

Spill reporting

Operator certification