Specifications include, but are not limited to: The project will generally include construction of a filter berm, filter blanket, and drainage ditch and piping improvements along the downstream face and downstream toe of Big Creek Lake Dam. The work of the project includes but is not limited to the following: construction of a reverse graded sand and gravel filter berm at the downstream toe of the dam and within the two downstream channels; construction of a sand and gravel reverse graded filter blanket along the downstream toe of the embankment; grading of a gravel access road across the filter berm and filter blanket, replacement of the impacted internal drainage and stormwater piping, installation of new stormwater drainage piping, installation of precast concrete headwalls for stormwater and internal drainage outlets, realignment of a downstream ditch and installation of reverse graded filter banket within two downstream ditches; relocation of existing instrumentation including weir flume boxes; temporary erosion control, and seeding and sodding.
