The MS4 Permit requires towns to pass legal authority to require that contractors, developers, and construction site operators maintain consistency with the CT Guidelines for Soil Erosion and Sediment Control. The Guidelines were originally published by DEEP in 2002 and amended in 2011 to provide for Low Impact Development practices. Updated Guidelines have recently been published and will take into effect on March 31st, 2024. Click the button below to access the updated Guidelines: