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Storm Water and Municipal Separate Storm Sewer Systems (MS4s) Featured Items: Municipal Separate Storm Sewer System (MS4) Discharges: Am I Regulated?   Topics Under This Category: General Permit TXR040000 for Phase II (Small) MS4s Explains the status of the proposed general permit, the requirements and the steps that will be necessary to obtain authorization for storm water discharges from small MS4s once the permit is issued.   Storm Water Permitting Requirements for Phase I (Medium and Large) MS4s Explains the requirements and steps for applying for a renewal permit to authorize storm water discharges from Phase I (large and medium) MS4s.   Storm Water Permitting Requirements for Phase II (Small) MS4s Authorization options, control measures required, and links to best management practices for operators of Phase II MS4s.   Waiver Option 1 from MS4 Permitting Requirements (Small Systems Only) Explains the waiver from the permitting requirement available to small MS4s which serve a population of less than 1,000.   Waiver Option 2 from MS4 Permitting Requirements (Small Systems Only) Explains the waiver from the permitting requirement available to small MS4s which serve a population of less than 10,000.

Last Modified 8/20/08
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