The Ontario Plan 2050 Policy Plan Amendment Supplemental Environmental Impact Report

The City of Ontario is implementing the Ontario Plan 2050 Policy Plan Amendment and the Eucalyptus Business Park Specific Plan (EBPSP) to reposition the southwest portion of the city as a regional employment and logistics center. The project involves modifying land use patterns across approximately 1,300 to 1,685 acres in southern Ontario to improve land use compatibility and ensure compliance with state laws. A primary component of this effort is the EBPSP, which establishes nine planning areas providing up to 2,939,000 square feet of business park uses on 137.9 acres, complemented by 35.88 acres of open space parkland. To support these amendments, the city developed a Supplemental Environmental Impact Report (SEIR) in accordance with the California Environmental Quality Act (CEQA). This process included a comprehensive buildout analysis for population, housing, and employment projections from 2025 to 2050, as well as consultations with the Native American Heritage Commission to protect tribal cultural resources. The project was officially approved on July 7, 2026, with the adoption of mitigation measures and a monitoring plan. Technical requirements for the project include adaptive reuse studies and structural analyses performed by professionals meeting the Secretary of the Interior Professional Qualifications standards.