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City of Portland Erosion and Sediment Control Regulations

City Of Portland   
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These regulations are focused on ground disturbing activities regardless of whether or not a permit is required and unless otherwise exempted. Minimum requirements include: a threshold of no visible and measurable sediment or pollutant exiting the site or washing into a water body or storm system; installation of BMPs selected from the Erosion Control Manual, special requirements during the wet season (Oct 1-Apr 30); signage requirements on sites where a permit is required; and inspection of BMPs within 24 hours of a storm events. For sites requiring permits, ESC plans must be submitted in conjunction with permit applications or contract submittals.