Erosion and Sediment Control
Product Case Study
Performance of Muscle Wall for Stormwater and Erosion Control Management on Steep Slopes
A portable temporary barrier product known as “Muscle Wall” was evaluated for its use in stormwater and erosion control management on terrain with steep slopes for project sites located in Southern and Northern California. While Muscle Wall has been used widely on flat grades as a temporary during-construction and post-construction stormwater barrier, it has typically not been employed to manage stormwater in areas with steep terrain. Temporary Muscle Wall barrier systems were used on the projects with steep hillside terrain in order to detain and slow the velocity of construction stormwater runoff during rainstorm events. The Muscle Wall product was evaluated for its ease of deployment, construction practicability, stability for varying slope conditions, surface placement types, and configurations, as well as the ability to reduce turbidity of stormwater discharging from temporary detention basins created by the barrier systems. In general, the Muscle Wall barrier systems were successful in detaining large volumes of water/sediment and slowing stormwater velocity to reduce erosion potential, but not successful at greatly reducing turbidity of the stormwater as it flowed through each temporary basin created with the barrier system. Based on our evaluation, observations, and analysis, Muscle Wall proved to be an effective stormwater and erosion control management option for use on projects which contain steep hillside terrain, given properly designed configurations and properly executed deployment techniques.