DCCM provided engineering services for replacing pre-84 distribution system pipelines for a confidential client. All low-pressure and intermediate-pressure pipelines made of ductile iron or steel were replaced with IP high-density polyethylene pipelines. Replacement of pipelines was part of the natural gas distribution Integrity Management Program as established in Texas Administrative Code, Title 16, Part 1, Rule 8.209. DCCM has currently designed over 16 miles of pipeline replacements in multiple areas throughout the cities of Mart, Hillsboro, and Waco. Services for this project included permit coordination with TxDOT and the cities of Mart, Hillsboro, and Waco; plan views of proposed gas mains; replacement of residential service lines; placement of proposed valves and mainline fittings; design of connection details; estimating project quantities; and retirement of regulator stations. All designs were completed in accordance with the client’s standards and specifications, as well as with federal, state, and municipal requirements.