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Alameda County Altamont Landfill Open Space Fund Costieridge Property Acquisition Pleasanton Ridge Regional Park East Bay Regional Park District Coast Live Oak Plant Community • Comprises more than 88% of the property. • Found along drainage areas and uplands. • Dominated by coast live oaks; also includes other native oaks, California buckeye, California bay and understory species such as the California hazelnut and coffeeberry. • Provides habitat for Northern Harrier, Bewick's wren, Hutton's vireo, bats, Alameda whipsnake. Coastal Mixed Hardwood Plant Community • Comprises almost 2% of the property. • Found along seasonal tributaries. • Features a mixture of harwood species such as the coast live oak, California bay, and bigleaf maple. • Provides habitat for orange-crowned warbler, oak titmouse, Dark-eye junco, black-tailed deer, bats, reptiles and amphibians. Diablan Sage and Coyote Brush Scrub • Found in patches on the dry. southern exposure slopes. • Features California sagebrush, coytote brush, sticky monkeyflower and lupine. • Provides habitat for Alameda whipsnake. Riparian and Wetland Habitat • Almost I mile of habitat. • Found in the northern and southern portions of the property. • Populated with western sycamore, California bay, bigleaf maple, ferns, bunch grasses and shrubs. • Provides habitat for California red-legged frog, Alameda whipsnake; may provide refuge for California tiger salamander and foothill yellow-legged frog. The Conservation Lands Network is a five-year science-based study completed in 2011 that identifies the most essential lands needed to sustain biological diversity of plants, fish and wildlife in the nine-county Bay Area. The study was designed to recommend the type, size and distribution of land needed to sustain and support diverse plant and wildlife communities. The Conservation Lands Network identifies the Pleasanton Ridgelands as the South East Bay Hills Landscape Unit and finds the Castleridge parcel essential to conservation and biodiversity goals. It further indicates that the landscape of the Castleridge property is a critical north/south habitat corridor connecting the East Bay Hills to the South Diablo Range, particularly for black-