For this project, Campbell Grading, Inc., rebuilt the top of a mountain on Angel Island in San Francisco Bay.
Angel Island has a long and storied past. Two thousand years ago, it was a Miwok hunting ground, and it has since served a number of purposes in the Civil War, the Spanish-American War, and World War II. It also was used as a major immigration point for the West Coast in the first half of the 20th century. After World War II, the island became home to a Nike missile site until it was turned over to the State of California in 1962.
Campbell Grading, Inc., was contracted to reconstruct the original contours of Mount Livermore, the highest point on the island, and recover 80,000 cubic yards of fill that had been pushed over the island’s north slope. The Army had pushed this dirt over the edge when it flattened the top of the mountain in the early 1950s to build a radar control station for the new missile site.
Barth Campbell developed an innovative approach that created a series of five benches, reducing costs while stabilizing the restored mountaintop and establishing natural contours. Heavy equipment was mobilized to the island via barge.
This project involved historic resource protection, hydrologic restoration, and coordination with multiple project partners. These partners included Sonoma County Probation crews, State Parks maintenance crews, and other contracted labor.
Erosion control was installed on 7 acres. The project was completed on time and within budget.