Mount Diablo State Park Drainage Repairs

Mount Diablo State Park staff shall repair eight 8 drainage culverts at Mount Diablo State Park. Repairs include using heavy equipment to backfill native soil to re-bed preexisting culverts, restoring road access, and/or stabilizing streambanks with heavy equipment. Six 6 sites will require armoring appropriate sections of each drainage to reduce erosion. Soil bioengineering including planting bunchgrasses, incorporating willow cuttings into rock armoring, and hand seeing will be utilized for er...