The San Diego Water Board issued a Clean Water Act section 401 water quality certification (Certification No. R9-2023-0150) to the Project Applicant to construct a mixed industrial use development within the East Otay Mesa Specific Plan area that will provide industrial/distribution capacity to serve the U.S./Mexico border region in the vicinity of the future East Otay Mesa International Port of Entry. The project consists of mass grading and construction of nine commercial/industrial lots, two on-site water quality basins, one lot reserved for a sewer pump station facility, interior roads, sidewalks, and driveways, and public roadway extensions of Airway, Siempre Viva, and Alta Roads to provide connections to State Route 11, the future East Otay Mesa Port of Entry, and the surrounding area. The Project will fill the existing unnamed intermittent stream channel,10 vernal pools, and 14 seasonal depressions supporting San Diego and Riverside fairy shrimp and construct a new channel to convey the water flows in a new location along the eastern site boundary. The Discharger is required to construct a permittee-responsible mitigation project at the Lonestar Mitigation Site to compensate for the permanent impacts to jurisdictional aquatic resources.