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as natural terrain. Most of these trees are part of the blue oak woodland plant community, with some scattered trees in the non-native grassland plant community. As identified in the EIR, the proposed development could significantly impact the site's vegetation areas unless mitigation measures are implemented. Blue oak woodland is the dominant plant community within the site's canyon and swale areas. The typical plant species within oak woodland areas on the project site include blue oak, valley oak, and California buckeye in the overstory, with non-native grassland species such as slender wild oat, soft chess, and clover in the understory. Blue oak trees and the oak woodlands on the site are considered sensitive by the California Department of Fish and Game. Most of these trees are classified heritage-size trees subject to the City's Heritage Tree Preservation Ordinance. Non-native grassland dominates the hilltops throughout the project site. The non-native grassland community on the project site is dominated by soft chess, slender wild oat, ripgut brome, and clover plant species. The diablan sage scrub is found on some of the steeper slopes in the southeast portion of the project site. Typical Diablan sage scrub species include California sage, sticky monkey flower, poison oak, and toyon. Wildlife Habitat Areas Prominent wildlife habitats on the site are mapped in the DEIR and include annual grassland, oak woodland, riparian woodland, and wetlands. As identified in the EIR, the proposed development could significantly impact the site's wetland areas unless mitigation measures are implemented. The annual grassland is comprised mostly of grazed rangeland and provides foraging habitat for a wide variety of animal species including black-tailed jackrabbit, Botta's pocket gopher, California ground squirrel, golden eagle, turkey vulture, red-tailed hawk, American kestrel, and western meadowlark. The oak woodland/riparian woodland habitats throughout the project site provide nesting and foraging habitat for species including acorn and Nuttall's woodpeckers, Bewick's wren, black phoebe, western bluebird, European starling, California towhee, California quail, violet-green swallow, scrub jay, red- shouldered hawk, and yellow-billed magpie. Mule deer and gopher snake also use the riparian corridors along the site's creeks. No special status plant species were observed during the field surveys, and no historic occurrences for the site have been recorded. Large-flowered fiddleneck, a federal-endangered species for which marginal habitat was potentially identified within the project site, was not observed and is not believed to occur. Other special status plant species with potential habitat on the project site also were not found during the rare plant surveys that were undertaken with the DEIR. PUD-33 Page 28 of 59 June 13, 2007