Permanent Water Quality (PWQ)

CDOT's Permanent Water Quality (PWQ) program is required under CDOT's Municipal Separate Storm Sewer System Permit (MS4).

Each CDOT region is responsible for evaluating new construction and redevelopment sites in the CDOT MS4 permit area to determine if stormwater controls are required. These controls are referred to as permanent water quality control measures (PWQ CM) or permanent best management practices (BMP).

For program assistance, consult region water pollution control managers/water quality specialists (see region contacts), or contact Program Manager Rachel Hansgen at [email protected] or 303-757-9975.

CDOT Applications for Mitigation Pool Funding
Limited Funding Available - Contact Pool Fund Manager
This section applies to CDOT-advertised projects only.  For local agency-advertised projects seeking mitigation pool funding , please visit the PWQ Local Agency Call for Projects site.


  • Rachel Hansgen
    Permanent Water Quality & Mitigation Pool Fund Manager
    [email protected] 

Application Materials

Limited Funding Available - Contact Pool Fund Manager

You must submit the following materials for all projects when applying for funding.

CDOT Mitigation Pool Fund Resources

Limited Funding Available - Contact Pool Fund Manager

Water Quality Contacts

Headquarters Rachel Hansgen [email protected] 303-757-9975
Region 1 Susie Hagie 303-757-9932
Region 2 Troy Rice troy.ri[email protected] 719-227-3260
Region 3 Leslie Modrick [email protected] 970-683-6254
Region 4 Nick Schipanski [email protected]us 970-350-2127
Region 5 Danielle Wilkinson [email protected] 970-385-1425

Hydraulic Engineer Contacts
Headquarters Al Gross 303-757-9267
Region 1 Samer AlHaj 303-365-7248
Allison Schaub-DiRosa [email protected] 303-512-4532
Jeff Kloska [email protected] 303-757-9277
Scott Leiker 303-365-7260
Region 2 Dennis Cress 719-562-5580
Andrew Stecklein 719-227-3264
Region 3 Stuart Gardner 970-683-6354
Region 4 Steven Griffin 970-506-4947
Long Phan 970-506-4959
Region 5 Walter Buckholts 970-385-1445