Effective Slope Stabilization For UPRR Big Spring Slope Protection Project
The UPRR Big Spring Slope Protection Project used 6-inch GEOWEB and ProGanics DUAL for effective slope stabilization and revegetation on an eroding embankment
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Project Overview
The Union Pacific Railroad Spring Slope Protection Project addressed the eroding embankment on the east side of the train tracks. Ongoing erosion and sheet flow were washing soil into the train tracks and ballasts.
In situ, the site’s soil consisted of hard clays with little to no organic matter. The 2:1 slope was not stabilized and showed significant signs of reeling and erosion.
Challenge
Sustain long-term stabilization and vegetation on the steep slope/embankment on the UPRR tracks despite the poor soil conditions. Furthermore, the project called for 6” of imported fill to be laid on the 2:1 slope. However, the exposed soil was subject to washing out upon the next rainfall. The goal was to contain the imported fill, meanwhile, mitigating soil loss until adequately vegetated.
Once the natural hillside was stabilized, a soil test assessed the organic conditions of the on-site material. The soil’s organic content was shallow, therefore, an erosion control solution would be required to protect the slope during/after construction.
How did Ferguson Waterworks confine the topsoil and promote fast vegetation growth using geotextiles?
In an effort to confine the imported topsoil, 6” Presto GEOWEB® was stretched downslope on top of a nonwoven geotextile fabric. The geotextile improved drainage and material separation. Next, ProGanics® DUAL was hydraulically applied as a single-step solution to optimize soil conditions meanwhile providing high-performance erosion control and protection from near-storm events.
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