The Kawainui Watershed Permanent BMP project includes the repair of eroded slopes at six sites located within HDOT Highways 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.