Madison MGO 37 requires erosion control plans for any disturbance of 4,000+ sq ft. Silt fence, inlet protection, and stabilized construction entrances mandatory. Aligns with WI NR 151 statewide standards.
Madison General Ordinances Chapter 37 (Subchapter Erosion Control) requires an erosion and sediment control plan for any land-disturbing activity exceeding 4,000 square feet, with simplified plans for 4,000-10,000 sq ft and full engineered plans for larger sites. Required BMPs: perimeter silt fence on downslope edges, inlet protection on all storm drains receiving site runoff, stabilized stone construction entrance minimum 50 feet long, daily tracking cleanup on adjacent streets, temporary seeding of disturbed areas dormant 7+ days, and permanent stabilization within 14 days of final grade. Wisconsin DNR NR 151 sets parallel statewide standards, and WDNR-issued Construction Site General Permits (WPDES CGP) apply for sites over 1 acre. Madison Engineering inspectors conduct pre-construction conferences and routine inspections. Non-compliance triggers immediate stop-work orders; chronic violators face enhanced penalties. Sediment entering Lake Monona or Mendota triggers WDNR involvement and potential criminal referrals.
No plan on regulated site: stop-work, $500-$5,000/day. Failed BMPs: warning then $250+. Discharge to waters: WDNR referral + restoration.
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