Project Description
Hydromulch and Permanent Erosion Control Fabric
The Kawainui Watershed Permanent BMP project includes the repair of eroded slopes at six sites located within Hawaiʻi Department of Transportation, Oʻahu District right-of-way that have the potential to contribute sediment to storm water runoff. This eroded slope was first prepared for and sprayed with a layer of hydromulch, an optimized mixture of mulch, nutrients and grass seeds.
The contractor then covered the slope with permanent erosion control fabric, which has a porous design that allows the grass to grow through while the fabric remains in place to prevent future soil erosion. Construction workers used a system of ropes for safety while installing the metal pins that secure the permanent erosion control fabric to the slope.
The Kawainui project began in mid-February of 2015 and is anticipated to be completed by the end of June 2015.