MS4 and MPCA staff conducting a joint construction site inspection
MS4 and MPCA staff conducting a joint construction site inspection

Introduction

The MS4 Permit requires your regulatory mechanism to be as stringent as the MPCA’s Construction Stormwater Permit for erosion, sediment, and waste controls. In addition, the MS4 Permit requires your written procedure for conducting site inspections to include a checklist or other written means to document each site inspection (MS4 Permit Part III.D.4.d.(4) and Part III.D.4.f.(2)). You must retain these documents for three years beyond the term of the MS4 Permit (MS4 Permit Part IV.C.).

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