The Eastern Hillside Stabilization Project (project) would stabilize and reinforce the Cal Maritime campus’s eastern hillside. The project would remediate rockfall and landside risks along the campus’s eastern hillside. Primary project activities include rock excavation, vegetation and tree removal, and construction of rockfall catchment infrastructure at the toe of the hillside which includes a flat concrete debris/maintenance bench and 6-foot-high retaining wall with a 6-foot-high debris barrier installed on top of the wall. This infrastructure would minimize damage from future landslides or rockfalls below the hillside. The project earthwork activities
would reduce the slope of the hillside, which has average slopes as steep as 1.4:1, or greater than 50 percent. Earthwork activities would span approximately 3.20 acres (139,392 square feet) and involve the removal of existing tree stumps, eucalyptus trees, and non-native grassland along the hillside that were disturbed in a 2019 wildfire. In total, project grading includes approximately 30,000 cubic yards (cy) of cut soil and 8,400 cy of fill (compacted soil). The project would create pproximately 5,000 square feet of new impervious area as a result of a new concrete debris bench, retaining wall, and sidewalk at the toe of the hillside. After grading and earthwork activities are completed, the hillside would then be revegetated with hydroseed to improve the stability of the hill and protect against future soil erosion. In addition, the project includes the stabilization and reinforcement of the western edge of a paved surface parking lot at the top of the hillside and planting of 16 oak trees along the same area. An existing fire hydrant and water line would be relocated at the toe of the
hillside so that they would be protected by the proposed new rockfall catchment infrastructure. To provide for stormwater drainage, three replacement catch basins would also be installed on the debris bench and a new 760 square foot bioretention area would be constructed along the northwestern edge of the remediated parking lot. The bioretention area would prevent infiltration of water into the remediated fill section of the project and would not result in a reduction of parking spaces. The project also involves reconstruction of an existing wooden stairway along the hillside that was also damaged during the 2019 wildfire. The project would incorporate applicable mitigation measures included in the 2018 Facility Master Plan EIR Mitigation Monitoring and Reporting Program, adopted by the CSU Board of Trustees in July 2018. Construction
of the project is anticipated to begin in January 2022. Project completion and operation is anticipated in by June 2022.