Why does the City have a Phase II permit?
In 1990, the Environmental Protection Agency (EPA) required all medium and large cities with populations greater than 100,000 to obtain NPDES permits. These were called Phase I permits. In 1999, the EPA required small MS4s with populations greater than 10,000 to obtain NPDES permit coverage for stormwater discharges. These are the Phase II permits.

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1. What is the National Pollutant Discharge Elimination System (NPDES)?
2. What is the Municipal Separate Storm Sewer System (MS4)?
3. Why does the City have a Phase II permit?
4. What does the Phase II permit require?
5. What kind of sampling is the City required to do?
6. What are the Six Minimum Control Measures?