Resilience, Access and Habitat Restoration Project

Resilience, Access and Habitat Restoration Project

The Project proposes to improve and relocate portions of Monument Road to address seasonal flooding of the existing roadway, provide improved public access to Border Field State Park (BFSP), establish resilience against the future effects of sea level rise (SLR) and improve the function of Tijuana Estuary including restoring native habitat and the removal of an existing approximately 2,300 foot road segment subject to regular flooding. The removed road segment would be realigned and an existing road segment would be elevated including the installation of box culverts and headwall systems to manage stormwater flows. The existing alignment and elevation of the roadway is subject to seasonal flooding in several locations caused by storm runoff from Goat Canyon and Yogurt Canyon, which convey flows from Tijuana, Mexico north into the United States. These flows result in Monument Road being flooded for a large portion of the year; thereby, preventing public access to BFSP and Monument Mesa. Project restoration would include the removal and restoration of approximately 2,300 feet of existing asphalt road, along with restoration of existing disturbed habitat adjacent to the roadway and within BFSP. Project Components 1. Proposed North-South Realignment. Upgrade an existing dirt road to a 30-foot-wide Class II base road beginning just east of the existing entrance kiosk on Monument Road, which would then pass over the Goat Canyon sediment basins, run along the base of Bunker Hill, and connect to the southern east-west leg of Monument Road. 2. East-West Roadway Elevation. Creation of approximately 1,000 feet of elevated asphalt concrete (A/C) roadway on Class II base road and installation of seven box culverts and headwalls . The road would be elevated 5 feet above existing grade to accommodate the new culvert system. A short access road to the Monument Mesa area would also be provided for maintenance purposes. 3. Equestrian Area. Improvements to the existing equestrian staging area would be undertaken to reduce impacts to the surrounding wetlands and improve accessibility to the facilities. This includes the reconstruction of a parking lot including equestrian parking stalls and horse corrals. 4. Habitat Restoration. A comprehensive habitat restoration plan is currently being developed and would include restoration of upland and wetland habitat areas within BFSP. Additionally, an approximately 2,300-foot length of existing asphalt road, running north-south through the estuary, would be removed. The road footprint would be filled with soil to existing grade and restored to the surrounding habitat types including salt and freshwater marsh. The restoration goals would include the management/control of non-native species, as well as improved habitat quality for wildlife usage, including foraging, nesting and breeding. Following plant establishment, a multi-year maintenance, monitoring and reporting period would be implemented. Roadways The North-South Realignment and East-West Roadway Elevation are classified as low-volume rural roads. The North-South Realignment would have a gravel surface and the East-West Roadway would have gravel surface for most of the length with A/C pavement used near the culverts over the Yogurt Canon discharge. These roadways would have two 12-foot-wide travel lanes and two shoulders (2-feet-wide and 4-feet-wide) and would accommodate a standard 45-foot bus template with a 125-foot minimum curve radius. Culverts The Project proposes the installation of seven precast culverts at three locations beneath Monument Road. The culverts would be 7-feet-wide by 3-feet-high. The culverts would be underlain by a 2-foot-thick layer of coarse aggregate wrapped in filter fabric. SCHEDULE: Construction is currently anticipated to begin in Spring 2026 and occur over a period of approximately 12 months.

Imperial Beach, San Diego

San Diego

Statewide

California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Conservation (DOC), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Toxic Substances Control (DTSC), California Department of Transportation, District 11 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Diego Region 9 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights

Recreational (Resilience Access and Habitat Restoration)

Coastal Permit

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian