Bayside Business Park is an approximately 145-acre site in Fremont that contained a mix of non-tidal salt marsh and uplands and also hosted the endangered salt marsh harvest mouse (Reithrodontomys raviventris raviventris; SMHM).

Bayside Business Park is an approximately 145-acre site in Fremont that contained a mix of non-tidal salt marsh and uplands and also hosted the endangered salt marsh harvest mouse (Reithrodontomys raviventris raviventris; SMHM).

In relatively well-developed areas, such as western Contra Costa County, finding mitigation sites can be problematic.