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1. What is the Arizona Pollutant Discharge Elimination System (AZPDES) program?
2. What is stormwater runoff?
3. What is an MS4 system?
4. Why is stormwater regulated?
5. Does my construction site require a Stormwater Plan Approval from Maricopa County?
6. Do I require a Post-Construction Permit from Maricopa County?
7. How do I apply for Stormwater Plan Approval?
8. What is the National Pollutant Discharge Elimination System (NPDES) program?