Appendix A Natural Environment Study (Minimal Impacts)

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Natural Environment Study (Minimal Impacts) 4.1.2.1. SURVEY RESULTS No special -status plant species were observed or are expected to occur within the BSA due to a lack of suitable habitat. A list of plant species observed in the BSA during the surveys is included in Appendix B. 4.1.2.2. PROJECT IMPACTS The Project is not expected to affect any special -status plant species because they are considered absent from the BSA. 4.1.2.3. AVOIDANCE AND MINIMIZATION EFFORTS/COMPENSATORY MITIGATION No compensatory mitigation or minimization measures are warranted because special -status plant species are considered absent from the BSA. 4.1.3. Special -Status Animal Species Occurrences The animal species listed in Table 2b are considered to be of special concern based on: (1) federal, State, or local laws regulating impacts to them; (2) limited distributions; and/or (3) the habitat requirements of special -status animals occurring in the vicinity of the site. The coastal California gnatcatcher is the only listed species identified by the USFWS as potentially occurring within the vicinity of the BSA (USFWS 2018b). However, there are no known occurrences of this species within the BSA or immediate vicinity, and suitable habitat for the species is absent from the BSA. The CNDDB indicated six additional special -status wildlife species (coast horned lizard, Crotch bumble bee, western yellow -billed cuckoo, California black rail, American peregrine falcon, and western mastiff bat) with historical occurrences within 3 mi of the BSA. However, most of these historical occurrences are presumed extirpated and, with the exception of marginally suitable habitat for western mastiff bat, suitable habitat for these wildlife species is absent from the BSA. The BSA contains suitable habitat for two non -listed, special -status avian species identified in the CNDDB records search (Cooper's hawk and California horned lark). The existing Fairview Street bridge also contains suitable roosting habitat for several non -listed, special -status bat species, and foraging habitat for these bat species is present within the BSA along the Santa Ana River. Each of these species are discussed in further detail below. ................................................................................................................................................ . Fairview Street Improvements from 9th Street to 16th Street and Bridge Replacement Project 39