FGI Member, Simbeck & Associates, worked with Ewing Trucking & Construction, to install a new pond liner to Nottingham Lake, which is nestled high in the Rocky Mountains in Avon, Colorado., This man-made lake was built more than 32 years ago. It was originally PVC-lined with an expected 20-year life span. The geomembrane liner worked longer than expected; however, by 2012 the city’s engineering department was struggling to keep the leaking lake full.
The liner had been repaired twice and in the course of those repairs, it was discovered that the liner had significantly deteriorated. Other changes made to the lake during its 32-year history further degraded the geomembrane liner, including installation of irrigation piping and construction work for the pumphouse dock and fishing pier. During special events, buoys were placed in the lake. Sediment removal, soil erosion, and exposure to sunlight also contributed to the liner’s deterioration.
Installing a new pond liner would not normally pose a challenge for experienced geomembrane contractors. On this project, however, the contractors were not allowed to use any park area surrounding the lake to stage equipment and materials.
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