Grading and construction projects in Downey exceeding 1 acre require a Stormwater Pollution Prevention Plan (SWPPP). Erosion control measures must be in place during the rainy season per state and county requirements.
Downey mandates erosion and sediment control for construction sites and land-disturbing activities. Grading permits typically require an erosion control plan. Best management practices include silt fencing, straw wattles, erosion control blankets, stabilized construction entrances, and sediment basins. Disturbed areas must be stabilized within a set timeframe. Inspections required during construction. Permanent stabilization through vegetation or hardscape required upon completion. Violations can result in stop-work orders.
Missing erosion controls: stop-work order and fines $250 to $2,500. Sediment discharge to waterways: fines $1,000 to $25,000 per day. Failure to stabilize: daily fines until corrected.
Downey, CA
Downey regulates leaf blower noise under its general noise ordinance. Gas-powered leaf blowers must comply with the 85 dBA construction equipment limit and o...
Downey, CA
Downey prohibits amplified music that exceeds ambient noise levels by more than 5 dBA at the property line. Quiet hours from 10 PM to 7 AM carry stricter lim...
Downey, CA
Industrial noise in Downey must not exceed established ambient levels by more than 5 dBA at the receiving property line. Corrective factors apply during dayt...
Downey, CA
California law (AB 1236) requires streamlined permitting for EV charging stations. Downey must provide expedited permits for residential EVSE installations. ...
Downey, CA
Driveway modifications in Downey require approval from Planning and possibly Engineering. Paving projects in the front yard area must meet development standa...
Downey, CA
Downey restricts oversized vehicle parking on public and residential streets. RVs must obtain permits under DMC 3182.5. Emergency parking allowed for 24 hour...
Side-by-side rule comparisons with other cities in Los Angeles County.
See how other cities in Los Angeles County handle erosion control.
See how Downey's erosion control rules stack up against other locations.
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