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construction. These species include the Salt Marsh Harvest Mouse, California Clapper Rail, Saltmarsh Common Yellowthroat, Alameda Song Sparrow, Central California Coast Steelhead, and Central Valley Fall/Late Fall-Run Chinook Salmon. Salt Marsh Wandering Shrew (Sorex vagrans halicoetes), CDFG Species of Special Concern, USFWS Species of Concern. The salt marsh wandering shrew has been observed approximately one mile northwest within the Oakland Airport. Because of the proximity of the sighting, and the presence of pickleweed habitat adjacent to the proposed route, there is a moderate potential for this species to occur in the study area. Construction of the future bike path is unlikely to affect the salt marsh vagrant shrew if all work avoids the adjacent pickleweed habitat. The preferred path would be located on the existing gravel access road. Because pickleweed is sparse or non-existent at the bridge alignment, construction of the bridge will not impact this species. The proposed project would not result in any significant impacts to the salt marsh wandering shrew if all pickleweed habitat near the proposed future bike path were avoided during construction, as required by mitigation measures for other species listed below. Salt Marsh Harvest Mouse (Reithrodontomys raviventris), Federal Endangered, State Endangered. According to the CDFG Natural Diversity Database (CDFG, 2004), the nearest documented occurrence ofthe salt marsh harvest mouse is located approximately 2.5 miles north at Arrowhead Marsh. Because ofthe proximity of the sighting, and the presence of pickleweed habitat adjacent to the proposed route, there is a moderate potential for this species to occur in the study area. Unlike the salt marsh wandering shrew, this species may wander into grassy upland habitats adjacent to pickleweed areas. Construction of the future bike path is unlikely to affect the salt marsh harvest mouse if all work avoids the adjacent pickleweed habitat. The preferred path would be located on the existing levee slope. To prevent this species from dispersing across the path during construction, a mitigation measure is proposed below to avoid impacts to the salt marsh harvest mouse. Sharp-shinned Hawk (Accipiter striatus), CDFG Species of Special Concern. This species typically nests in coniferous or mixed forests at higher elevations; however, it disperses widely in winter and may forage in many habitat types. Since sharp-shinned hawks are unlikely to nest in the study area, the proposed project would not result in any significant impacts to this species. Cooper's Hawk (Accipiter cooperi), CDFG Species of Special Concern. This species typically nests in coniferous or mixed forests, or oak and riparian woodlands; however, it disperses widely in winter and may forage in many habitat types. Since the Cooper's hawk is unlikely to nest in the study area, the proposed project would not result in any significant impacts to this species. American Peregrine Falcon (Falco peregrinus anatum), State Endangered, USFWS Species of Concern. Peregrine falcons typically nest on rock ledges on cliffs, or on man-made structures, such as bridges and buildings. This species forages on birds, especially where large flocks of migratory shorebirds and waterfowl congregate. Breeding habitat is not present in the study area; however, peregrine falcons may forage on shorebirds at low tide. Since this species is unlikely to nest in the study area, the proposed project would not result in any significant impacts to this species. Y4204IS.00693.doc - 4/5/07 -16-