We were called in to deal with soil erosion issues and to help with previous failed remediation attempts. There was significant silt formation, polluted water, embankment erosion and lack of vegetation, which was exacerbating the issues.
After reviewing the site, we determined the best course of action was to use Biodegradable Erosion Blankets, in areas that were in greatest need of them, the rest of the areas were left uncovered.
The blankets were put down in several places in order to stabilise soil particles and sediments, holding them in place to prevent migration.
Biodegradable Erosion Blankets typically degrade after 2 or 3 years but provide protection from the elements allowing vegetation to establish.
Twelve months later we returned to the site to observe the changes that had taken place.
There had been a dramatic improvement in the areas which had been protected by an erosion blanket showing that vegetation had re-established itself. which would help in the long-term stability erosion prevention in these areas.
However, soil on the embankment which had not been protected showed clear signs of having been washed away and if left untreated would continue to erode. There were also small, loose boulders on the embankment which showed signs that the watercourse was still susceptible to movement which would eventually result in silt formation and blockages.