Middle Rio Grande Watershed-Based MS4 Permit

General Permit Requirements

Special Conditions

• Compliance with water quality standards
• Discharges to impaired waters with and without TMDLs
• Additional PCB assessment and study requirement for COA, AMAFCA, and Bernalillo County (Links to PDF)
• ESA requirements for addressing dissolved oxygen and sediment pollutant loads (Links to PDF)

Stormwater Management Program (SWMP)

• Minimum Control Measures (MCMs) (Links to PDF)

Monitoring and Assessment

SWMP Minimum Control Measures

• Construction site stormwater runoff control
• Post-construction stormwater management in new development and redevelopment
• Pollution prevention/good housekeeping (Links to PDF)
• Illicit discharges and improper disposal
• Control of floatables discharges
• Public education and outreach
• Public involvement and participation