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5.0 Environmental Analysis 5.2 Biological Resources <br />Avion Project SEIR <br />Page 5.2-6 <br />too small an acreage to support burrowing owl, the structure of the grassland (i.e., tall, dense) is not <br />optimal for burrowing owl, and the lack of observations of suitable burrows, burrow complexes, or <br />any sign of burrowing owl presence on-site. <br />d. Jurisdictional Waters and Wetlands <br />The drainage courses, their tributaries, and the two impoundment areas located on the project site <br />are considered federal and state jurisdictional waters (Table 5.2-3). The major drainage courses are <br />federal (USACE) non-wetland waters and state (CDFW, Regional Water Quality Control Board) <br />streambed features that are ephemeral. These drainage courses do not support wetland vegetation, <br />but occur within the upland chaparral habitat in the canyon bottoms. The two impoundments <br />support herbaceous wetland plant species, hydric soils, and secondary wetland hydrology <br />indicators, and therefore, are federal and state wetlands. The two impoundment areas support <br />herbaceous wetland plants and, therefore, are considered a wetland under the City’s Biology <br />Guidelines (City of San Diego 2012). <br />Table 5.2-3 <br />Jurisdictional Waters <br />Jurisdictional Waters Type <br />Existing <br />Acres Agency <br />Wetland 0.13 <br />U.S. Army Corps of Engineers <br />Regional Water Quality Control Board <br />California Department of Fish and Wildlife <br /> City of San Diego <br />Non-wetland water/Streambed 0.63 <br />U.S. Army Corps of Engineers <br />Regional Water Quality Control Board <br />California Department of Fish and Wildlife <br />TOTAL 0.76 <br /> <br />5.2.2.4 Wildlife Movement Corridors <br />Wildlife movement corridors are defined as areas that connect suitable wildlife habitat areas in a <br />region otherwise fragmented by rugged terrain, changes in vegetation, or human disturbance. <br />Natural features such as canyon drainages, ridgelines, or areas with vegetation cover provide <br />corridors for wildlife travel. Wildlife movement corridors are important because they provide access <br />to mates, food, and water; allow the dispersal of individuals away from high-density population <br />areas; and facilitate the exchange of genetic traits between populations (Beier and Loe 1992). <br />Wildlife movement corridors are considered sensitive by the City and Wildlife Agencies. <br />Regional wildlife corridors were established as part of the MSCP planning that is documented in the <br />Subarea Plan EIR. These established wildlife corridors connected the La Jolla Valley and associated <br />Lusardi Creek lowlands to the Black Mountain Open Space Preserve to the east and south <br />(Figure 5.2-2). The anticipated development boundary of the Avion property adjacent to the Black <br />Mountain Open Space Preserve were accounted for in the development of these regional wildlife <br />corridors. The Avion project site is surrounded by portions of the Black Mountain Open Space