West Leg Gas Main

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City of Duluth West Leg Gas Main

Project Type: Natural Gas Pipeline Design; Duluth, MN

Client: City of Duluth

The City of Duluth needed a second primary line to deliver natural gas into its distribution system. The West Leg Gas Main provides the economy a secondary gas source as well as the security of a redundant, emergency supply. The West Leg Gas Main consists of 7.4 miles of16″ pipe designed to accommodate the passage of internal inspection devices. The pressure regulating station at the outlet of the pipeline is equipped for flow control. The Dispatch Operator is able to remotely balance flows between two gas sources. LHB provided boundary and legal survey for planning the route and engineering design and drafting of alignment sheets for preliminary, bid, and construction drawings. LHB also provided coordination of the subconsultants to complete geo-technical survey, environmental permitting, and right of-way acquisition. Written specifications and special provisions were made to the Mn/DOT specification. The project also included the design of terminal stations for the inlet and outlet of the pipeline. All facilities were designed in accordance with the Minnesota Department of Transportation and the Minnesota Office of Pipeline Safety Regulations Part 192.

L.W. Survey conducted preliminary surveys and construction staking for this project.


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