VAMA - 12276 - Implement Storm Drainage Improvements at Vanderbilt Mansion

The Department of the Interior is seeking a contractor for storm drainage improvements at Vanderbilt Mansion. The project involves the construction of a 3,500 cubic foot underground storm water detention system featuring an outlet structure designed to control runoff and maintain existing peak flow rates to the east. This storage capacity is engineered to handle a 100-year storm event with an additional 15 percent buffer to account for current rainfall and storm frequency trends. The scope of work includes the installation of 12-inch diameter piping connecting the new detention system to an existing inlet at the northwest corner of the parking area, as well as piping from the system to an existing inlet located in the southern half of the site. This forecast is categorized under NAICS code 561730 and is managed by the National Park Service.