Work consist of installation and maintenance of erosion and sedimentation controls, required excavation, complete, wet well installation: furnish and install corrosion-proof polymer concrete precast wet well sections via caisson method, including internal excavation and soil removal during sinking, dewatering as necessary, offsite disposal of excavated materials, assembly per polymer concrete wet well manufacturer recommendations, furnish and install corrosion-proof polymer concrete lid with hatches and all cores, installation in polymer concrete wet well to include 316 ss discharge piping, two (2) 15 hp non-clog, explosion-proof pumps, base elbows, guide rail system, and power cables. (owner to supply and install sonar level monitoring device).