The NPDES municipal stormwater permit contains two kinds of requirements that must be implemented through Snohomish County codes:
- Prohibitions against discharging pollutants to water and requirements for pollution control measures at currently-developed sites are found in:
- Snohomish County Code (SCC) Chapter 7.53, Water Pollution Control
- Stormwater mitigation measures required for new development and redevelopment projects are found in:
- Chapter 30.63A SCC - Drainage
- Chapter 30.63B - Land Disturbing Activity
- Chapter 30.63C - Low Impact Development