The Piney Branch Sewer Interceptor project included the realignment of a force main between two (2) pumping stations in Charles County, Maryland. The project is located in environmentally sensitive areas, such as wetlands, a 100-year floodplain and several bodies of water.
DFI provided Construction Management and Inspection (CM&I) services for this Charles County, Maryland Department of Utilities project. The purpose of this project is to construct a realignment of the existing eight (8)-inch diameter force main from MD-Five (5) pump station located off Leonardtown Road to the St. Mark's pump station located off St. Charles Parkway in Waldorf, Maryland.
- Construction included approximately 11,000 linear feet of 42-inch gravity sewer next to (parallel) to the existing Piney Branch Interceptor Sewer that runs along the stream bed. This is Phase Two (2) of constructing a parallel sewer from MD-301 to the Mattawoman Interceptor just beyond Berry Road (MD-288).
- Construction is within an environmentally sensitive areas, such as, wetlands, 100-year-old floodplain, waters of the United States and within the Maryland Department of Transportation (MDOT) State Highway Administration (SHA) corridor, which includes researching and obtaining necessary permits.
- Construction of a 10 foot x 15 foot precast vault at the tie-in to the existing 60-inch Mattawoman Interceptor.
- The sewer pipe is mostly C905 PVC with approximately 887 feet of Class 53 DIP.
- There are 30 – six (6)-foot diameter precast MHs and one (1) – four (4) foot diameter precast MH.
- Three (3) micro-tunneling areas under the three road crossings at Middletown Road, Davis Road and Berry Road (MD-288).
- Several areas of concrete encasements, 40 foot in length, under steam and drainage way crossings.
