California maintains a state-level list of noxious weeds and invasive plants regulated by the California Department of Food and Agriculture. Alameda County follows state regulations and also participates in regional invasive species management through the Alameda County Weed Management Area.
The California Department of Food and Agriculture (CDFA) maintains a list of noxious weeds rated by their invasiveness and impact. These are classified as A-rated (eradication or containment required), B-rated (containment at local discretion), and C-rated (monitored). Key prohibited species relevant to Alameda County include yellow starthistle, Scotch broom, French broom, pampas grass, Cape ivy, and various species of Genista. The Alameda County Weed Management Area (WMA) coordinates invasive plant management across the county, working with local agencies, land managers, and volunteer groups. California also has the Cal-IPC (California Invasive Plant Council) which maintains an inventory of invasive plants, rating them as High, Moderate, or Limited threat. The county's fire prevention programs also target invasive species that increase wildfire risk, particularly in the East Bay hills area.
CDFA A-rated noxious weeds must be eradicated or contained where found, and property owners may be required to treat infestations at their own expense. Failure to manage invasive species that create fire hazards can result in weed abatement orders and fines. County-level fines for non-compliance with weed abatement vary but can be charged to the property owner as a lien.
Alameda County, CA
Alameda County noise ordinance (Chapter 6.60) sets detailed dB limits by zone and time. Residential nighttime (10 PM–7 AM): 45 dBA for 30+ min/hr, up to 65 d...
Alameda County, CA
Outdoor music in unincorporated Alameda County requires compliance with residential decibel limits and typically a temporary use or special event permit for ...
Alameda County, CA
Alameda County unincorporated areas allow leaf blowers during general construction/maintenance hours. California AB 1346 bans the sale of new gas-powered lea...
Alameda County, CA
Unincorporated Alameda County regulates RV parking through zoning ordinance. 72-hour street limit applies. Specific requirements vary by PD and zoning district.
Alameda County, CA
Alameda County unincorporated areas require driveways to be paved, maintain clear sight lines, and not block sidewalks or public right-of-way. Encroachment p...
Alameda County, CA
Alameda County Zoning Code §17.52.430 limits fences to 4 feet in required front yards and 6 feet in side and rear yards. A 2-foot limit applies within 30 fee...
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