Minimum Control Measure #4: Construction Site Runoff Control
Well that's news to me. It was my thinking that MS4s wouldn't have to do much in the way of controlling construction site stormwater pollution because there's already a permit in place for construction-related stormwater.

In fact, MS4s are required under the new MS4 general permit to write an ordinance that holds developers/contractors to task for stormwater/litter controls at their construction sites. Specifically:

• An ordinance that makes BMPs sediment and erosion control necessary at construction sites that disturb over an acre (including ones less than an acre if they're part of a larger development)
• An ordinance that requires construction sites to control waste/litter
• Procedures must be in place for reviewing construction site plans, citizen complaints and for making site inspections.