Stormwater management is a critical component to reduce the impacts of stormwater runoff on streams / wetlands.

Due to the hillside development, a large quantity of stormwater need to be managed by bioswales & rip-raps.

Rock materials for bioswales & rip-raps were brought to the site.

Bioswales consist of layers of different size rocks with a deep middle trench, covered with engineered soil mix & shallow root plants.

A riprap was about to be constructed.  Each keystone block weighs 75lbs.

The perimeter footing area was graded and tampered.

The riprap walls were built and large backing #3 rock materials were laid over a weed blocker.