The project involves the construction of a nutrient reduction wetland in Greene County, Iowa. The work includes selective clearing, excavation, grading, tile and outlet structures, riprap placement, and seeding. The project requires the removal of existing material, disposal of refuse, and preparation of the site for construction. The contractor must also provide measures to control erosion and minimize pollution during construction. The project includes approximately 21,658 cubic yards of earthwork, 533 linear feet of tile installation, 2 concrete manhole structures, 2 outlet riser structures, 21.5 tons of riprap, and 1.8 acres of seeding. The estimated construction cost range is $120,000 to $150,000.
• The project requires the contractor to perform site preparation, including clearing, grubbing, stripping, and refuse removal.
• The contractor must also provide pollution control measures, including erosion and sediment control, and seeding and mulching for protective cover.
• The project includes the installation of corrugated metal pipe conduits, loose rock riprap, and other structures.
• The contractor must ensure that all work is performed in accordance with the construction specifications and drawings.
• The project requires the contractor to maintain the site in a clean and safe condition, and to restore the site to its original condition upon completion of the work.