Arapahoe County and cities require erosion and sediment control per Colorado Discharge Permit System (CDPS) and Mile High Flood District standards. Projects over 1 acre need state CDPS Stormwater Construction Permit. Silt fencing, stabilized entrances, and BMPs required. Cherry Creek Watershed imposes stricter controls.
Erosion and sediment control in Arapahoe County is mandated by both federal Clean Water Act Section 402 and Colorado's Colorado Discharge Permit System (CDPS). Construction projects disturbing 1 acre or more must obtain a CDPS Stormwater Construction Permit from CDPHE Water Quality Control Division and implement a Stormwater Management Plan (SWMP) per the UDFCD/Mile High Flood District Urban Storm Drainage Criteria Manual Volume 3. Best Management Practices include silt fencing on downslope perimeters, straw wattles on slopes, erosion control blankets on disturbed areas, stabilized construction entrances (typically VT-1 tracking pads), sediment basins for larger projects, and concrete washout containment. Aurora City Code §138-180 requires erosion control on projects over 6,000 sq ft disturbed area—stricter than the 1-acre state threshold. Centennial and Littleton follow 10,000 sq ft triggers. The Cherry Creek Reservoir Watershed (5 CCR 1002-72) imposes additional phosphorus-focused BMPs throughout the watershed. Disturbed areas must be stabilized with vegetation or mulch within 14 days of final grading per state rules. Inspections required weekly and after precipitation events over 0.5 inches. Project closeout requires CDPS permit termination and final stabilization certification.
Missing erosion controls: stop-work order and fines $1,000 to $10,000 per day under CDPS. Sediment discharge to waters of the state: $5,000 to $50,000 per day. Cherry Creek watershed violations: additional penalties under 5 CCR 1002-72. Failure to stabilize: daily fines until corrected.
Centennial, CO
Centennial's Municipal Code Chapter 10, Article 12 prohibits excessive noise that endangers personal or real property. The city relies on a general 'excessiv...
Centennial, CO
Centennial regulates construction noise through its general noise ordinance and building regulations under Chapter 18. Construction activities are generally ...
Centennial, CO
Centennial's animal regulations address incessant barking as a noise disturbance that violates the peace and quiet of a neighborhood. Dogs found creating exc...
Centennial, CO
Centennial limits RV and trailer street parking to 48 hours at a time with at least 24 hours between parking periods. RVs must park in front of and on the sa...
Centennial, CO
Centennial's Land Development Code regulates driveway design and parking surfaces. The city rejected a 2019 proposal to limit yard parking area percentages. ...
Centennial, CO
Centennial approved a 14-day street parking limit for regular vehicles in residential areas. After 14 days, the vehicle must be off the street for 7 consecut...
Side-by-side rule comparisons with other cities in Arapahoe County.
See how Centennial's erosion control rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.