Specifications include, but are not limited to: The County Commissioners of Charles County are hereby requesting sealed bids from qualified Contractors to perform construction services on the Stormwater Management Improvements project at Public Works. The primary purpose of this project is to provide water quality treatment by installing a step pool storm conveyance facility to provide water quality treatment to 20.18 acres of impervious cover and to provide storm water drainage improvements to capture 4.89 acres of runoff to alleviate flooding in the fueling station islands, drive isles and parking areas in and around the Charles County Department of Public Works Maintenance and Administration buildings. This project is in support of the County’s efforts to fulfill the Maryland Department of the Environment’s (MDE) permit requirements to fulfill its National Pollution Discharge Elimination System (NPDES) MS4 permit requirements