Four-Mile Natural Gas Transmission Pipeline
CobbFendley provided professional engineering services and assisted in the planning, permit coordination, engineering, and design of 4.2 miles of 8-inch high-pressure pipeline to provide natural gas to a power plant in Galveston, Texas. The project included an upstream custody transfer meter station and a downstream check meter station. The pipeline is located in an urban and industrial area of Galveston and traverses roadways, waterways, railroads, and public and private property. Each of these crossings posed a unique set of engineering, design and construction challenges. In all, 27 bores were completed, with 17 between 500 and 600 linear feet, and 10 between 900 and 1,200 linear feet. Horizontal Directional Drilling (HDD) was the preferred installation method since open cutting would have been too complex for the area due to the many existing buried utilities.
HDD helped avoid project delays and interrupting traffic on the one of the busiest roads on Galveston Island. It also helped to eliminate damage to the retaining walls and other structures within the right-of-way. CobbFendley performed engineering and design services, field survey, construction phase consulting, and permitting services from inception through construction.
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