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should be for acquisition of property having significant value for visual character and/or <br /> non-motorized recreation. <br /> DISCUSSION <br /> The EBRPD proposes to acquire the approximately 231 acre Castleridge property <br /> located adjacent to Pleasanton Ridge Regional Park (see the complete application in <br /> Attachment 2). The property is located about one mile northwest of the Bernal Avenue I- <br /> 680 exit and one mile south of the Dublin 1-580/680 interchange. <br /> Approximately 90% of the Castleridge Property is steep hills dominated by oak <br /> woodland. Many of the trees on the ridges have a circumference greater than 55- <br /> inches and, therefore, are designated as heritage trees. Areas of Diablan sage and <br /> open grassland habitats can be found throughout the property. Riparian and spring <br /> communities are also present, as follows: <br /> • Annual grass/forbs plant communities comprise approximately 10% of the <br /> property and are primarily found in the northeast corner of the property and the <br /> southern exposure slopes. The grass community features native grasses such <br /> as California melicgrass and blue wildrye, and exotic species, such as wild oats <br /> and Italian thistle. These communities provide habitat for ground dwelling animal <br /> species, such as the California ground squirrel, and foraging habitat for the <br /> golden eagle. <br /> • Coast live oak plant comprise more than 88% of the property and is found along <br /> drainage areas and uplands of the property. Although the site is dominated by <br /> coast live oak, the site also includes other native oaks, such as California <br /> buckeye and California bay, in addition to understory species such as the <br /> California hazelnut and coffeeberry. The oaks provide habitat for Northern <br /> Harrier, Bewick's wren, Hutton's vireo, bats, and the Alameda whipsnake. <br /> • Coastal mixed hardwood plant comprise approximately 2% of the property and is <br /> found along seasonal tributaries. The mixture of hardwood species include the <br /> coast live oak, California bay and bigleaf maple, which provide habitat for <br /> orange-crowned warbler, oak titmouse, Dark-eye junco, black-tailed deer, bats, <br /> reptiles and amphibians. <br /> • Diablan sage and coyote brush scrub is found in patches on the dry, southern <br /> exposure slopes and features California sagebrush, coyote brush, sticky <br /> monkeyflower and lupine, which provides habitat for the Alameda whipsnake. <br /> • Riparian and wetland habitat comprise almost one mile of habitat. It can be <br /> found in the northern and southern portions of the property and is populated with <br /> western sycamore, California bay, bigleaf maple, ferns, bunch grasses and <br /> shrubs. The area provides habitat for the California red-legged frog, Alameda <br /> whipsnake and may provide habitat for the California tiger salamander and <br /> foothill yellow-legged frog. <br /> Page 3 of 5 <br />