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FPB Vegetation Standards WUI 2021 Livermore-Pleasanton Fire Department Page 1 of 3 VEGETATION MANAGEMENT STANDARDS Undeveloped Properties Within Wildland-Urban Interface Areas (WUI) The following minimum standards apply to undeveloped/non-landscaped areas of unimproved and developed parcels within the wildland-urban interface. This standard does not apply to agricultural parcels – see separate handout. Property owners are required to maintain their property free of hazards, including any hazard created by the presence of weeds, grass, brush, debris, growth, or other matter, which may support fire spread during firefighting activities. This standard applies year-round. Multiple abatement efforts may be required due to regrowth. Special property conditions may require additional or modified abatement. The wildland-urban interface areas are those areas that have been designated by the State of California as being within a Very High Fire Hazard Severity Zone. Further information about Fire Hazard Severity Zones can be found at https://gis.data.ca.gov/datasets/789d5286736248f69c4515c04f58f414. Removal of weeds, dead vegetation including leaves, brush, tree limbs, and combustible material such as trash and debris, plus management of live trees, bushes, and brush is required as specified below. Modifications to last year’s requirements are highlighted. STANDARDS FOR ABATEMENT AND MAINTENANCE General Weed Abatement for Undeveloped Parcels • Parcels five acres or less in size: Weeds and grasses must be disced or mowed; with material mulched, or raked and bagged and removed from the property, or rototilled. This applies to the entire area, including along streets and around the perimeters near fences, and around structures • Parcels in-between five and ten acres: Disc or mow a 20’ perimeter around the area. No cross breaks are required. • Parcels ten acres or more: Disc or mow a 20’ perimeter around the area. Disc 20’ wide perimeter breaks as well as 20’ wide cross breaks in 5-acre grids. Fence lines may require hand-mowing/weed-eating to ensure completion of fuel break. When terrain is too steep or rugged for a tractor, a hand mowed fuel break may be required. • Within the areas of weed abatement: o Remove dead trees and shrubs o Remove dead leaves, shed bark, etc. o Limb smaller trees from the ground to one-third the height of the tree o Limb larger trees at least six feet up from the ground o Maintain at least six feet between the top of shrubs and tree limbs o Mulched material may remain at a depth not exceeding 4 inches