Vulcan Materials Company

Azusa Rock

Irwindale, California, United States

Certified Silver through 2022

Project Name
Project Type
East Side Reclamation Project
Other Habitats
Barn Owl Box Project
About the Program
The Azure Rock sand and gravel mine is operated by Vulcan Materials Company and is located in southern California near Pasadena and is adjacent to the Angeles National Forest. The site is also in the Fish Creek riparian corridor, with the Fish River being a tributary to the San Gabriel River. The project area is 35.1 acres of reclaimed mine, with steep slopes that have been micro-graded to form more gentle steps for vegetation to grow on. The habitat is mostly native coastal sage scrub and chaparral. The goal of the project is to revegetate the reclamation site to offset the impacts from mining projects and provide native habitat for wildlife, including barn owls. The project also strives to educate students about the importance of reclamation efforts and native habitat.

Practices and Impacts
  • Staff and contractors revegetated the former mine site by planting native species, including trees and shrubs in containerized planters to promote growth. There has been an increase in native plant cover on the site and use by native wildlife.
  • Staff installed nest boxes to provide nesting areas and cover for barn owls, as well as foraging grounds in the surrounding native plant communities. Barn owls have not yet used the nest boxes likely due to disturbance and bee colonization, but new nest boxes will help to alleviate some of the bee concerns.