SPAWN is working to restore an abandoned ready-mix concrete plant on Black Mountain Ranch in Point Reyes Station, California. The goal of the project is to restore the existing parking area back into a natural riparian forest, one that existed before the cement plant was built.

The first phase of this project was completed in 2016 and the second phase will begin in the summer of 2023. The second phase of the project will remove the remaining concrete surfaces from the parking area, re-contour the banks so the water flows naturally off the site, and plant thousands of plants and native trees throughout the site. The bank grading will also expand the floodplain area so that juvenile salmon can seek slow water refuge during storms.

Once the parking area is removed and the banks are shaped, SPAWN staff and volunteers will re-plant the area with native trees like redwood and elderberry and remove nonnative weeds like Himalayan blackberry and cape ivy. This native forest will improve water quality and provide complex riparian habitat to endangered coho salmon and other wildlife species.

Funding for the first phase of the project was provided by the California Department of Fish and Wildlife and SPAWN members. The second phase of the project is funded by the State Water Resources Control Board.

2016 Impact

1,500

Square feet of concrete removed from the creekbank

150

Cubic yards of concrete and asphalt removed from the edge of the creek

70

Native plant and tree species planted on the project site

2023 Impact

1

Acre of concrete removed from the creekbanks

1,000

Cubic yards of concrete removed from the riparian area

1,000

Plants and trees planted at the site

Project Background

Rich Ready Mix Concrete was established on Point Reyes-Petaluma Road in 1958. In 2012, due to a decrease in demand as a result of less new home construction and more competition, the plant was closed and demolished. A barn owned by Black Mountain Ranch has stayed. The abandoned site was located adjacent to Lagunitas Creek, one of the most important watersheds left for recovering endangered coho salmon.

Before restoration in 2016.
After restoration in 2016.

Project Timeline

SPAWN has been working to transform the former concrete manufacturing site into a native wetland forest since 2016. The second phase of the project will begin in 2023.