Municipal Stormwater - MS4

Storm Drain

Municipal Stormwater (MS4*) Program

MS4 = Municipal Separate Storm Sewer Systems

Active MS4 Permits	EPA ECHO database	Active Stormwater Industrial Certs Including MS4's spreadsheet
MS4 General Permits These permits are being Administratively Continued effective 3/10/2013
Statewide MS4 General Permit COR090000		Application	Permit	Fact Sheet
Non-Standard MS4 General Permit COR070000		Application	Permit	Fact Sheet
Cherry Creek Reservoir Basin MS4 General Permit COR080000		Application	Permit	Fact Sheet
Other Permitting Requests
Amendments/Modifications		Request
Notice of Transfer		Request
Widthdrawl Request		Request
Termination Request		Termination
Application and Measurable Goal Guidance
Colorado Phase II Stormwater Municipal Resources		Resources
Non-Standard MS4 Municipal Guide Fact Sheet		Fact Sheet
Guidance for Assuming MS4 Permitting Responsibilities		Guidance
Qualifiying Local Programs Guidance and Application		Application

Colorado WQCD "MS4 Matters" Information Bulletin
Bulletin 1 9-18-2009	Bulletin
Bulletin 2 11-02-2009		Bulletin
Bulletin 3 1-6-2010		Bulletin
Bulletin 4 5-24-2010		Bulletin
Compliance Forms
Targetted Permit Questionnaire COR090000 and COR080000		Questionnaire
Notice of Change of Contact		Form
Annual Report Forms
Statewide City and County COR090000		Form
Cherry Creek Reservoir COR080000		Form
Non-Standard MS4 COR070000		Form
Low Risk Discharge Policy and Guidance Documents
WQCD Guidance for Assuming MS4 Permit Liabilities		Guidance
MS4 Low Risk Discharges Policy Guidance		Guide
WQP 27 Low Risk Discharges Policy		WQP - 27	Comment
Snow Melting Machines		Policy	Comment
Swimming Pools		Policy	Comment
Potable Water Discharges		Policy	Comment
Uncontaminated Groundwater Discharges to Land		Policy	Comment
Cosmetic Power Washing Operations Discharges to Land		Policy	Comment
Fire Safety Mainenance Activities Discharges Draft Guidance		Guidance Document

Compliance Assistance Documents
Resource List for Municipalities		Resources
Guidance on Mosquitoes, West Nile Virus, and Post Construction Best Management Practices		Guidance
MS4 Construction Site Erosion Control Oversite - State Land		Guide
Teacher resources for introducing urban stormwater quality concepts to the classroom - including example lesson plans meeting Colorado standards for science, geography and civics		Resources
MS4 Audit Guide		Guide

Municipal industry Q&A - guidance on applying for industrial and construction permits for municipalities Q&A pdf file

Urban Area Maps

Fact Sheet Urban area map fact sheet (READ FIRST)
- Map Adams and Aurora only
- Map Adams, no Aurora
- Map Arapahoe
- Map Boulder
- Map Denver
- Map Douglas
- Map El Paso
- Map Jefferson
- Map Larimer
- Map Mesa
- Map Pueblo
- Map Weld, Far West
- Map Weld, Greeley area

2010 Urban Area Maps