El Paso County, CO Environmental Rules: Erosion Control (2026)

Erosion and sediment control (ESC) in El Paso County is regulated under overlapping federal, state, and local frameworks. All construction sites disturbing 1+ acre require coverage under CDPHE Stormwater Construction General Permit (COR-400000) and a Stormwater Management Plan (SWMP). Colorado Springs Drainage Criteria Manual and El Paso County LDC Chapter 6 require ESC plans for disturbances over 1 acre (city) and 1/2 acre (county). Best Management Practices (BMPs) include silt fencing, straw wattles, erosion control blankets, hydroseeding, stabilized construction entrances, concrete washouts, and sediment basins. Inspections occur weekly and after significant storm events (0.5+ inch rainfall in 24 hours). Disturbed areas must be stabilized within 14 days of inactivity. The Waldo Canyon Fire (2012, 18,247 acres) and Black Forest Fire (2013, 14,280 acres) burn scars continue to require specialized post-fire erosion controls — straw wattles, sediment basins, and re-vegetation. Permanent stabilization via vegetation or hardscape required within 1 year of substantial completion. Pikes Peak region's granitic soils, steep slopes, and monsoon rains amplify erosion risk. Fountain Creek watershed settlement adds compliance rigor. Manitou Springs faces unique post-Waldo erosion controls protecting Ruxton Creek corridor.