Entech worked closely with utility engineering and land agents to evaluate and establish suitable pipeline routing, construction access, and feature crossing methods. The design team provided design and permitting for a 50-ft wide limit of disturbance for line construction and all associated erosion and sedimentation controls. Temporary rock construction access locations and details were provided to allow suitable construction access at multiple locations along the alignment.

Road and access crossing design details were provided to utilize open-cut methods of installations. The established ROW paralleled an existing electrical power line ROW, which created the need for increased cathodic protection and AC mitigation considerations. The utility’s corrosion and integrity group worked closely with the Entech design team to accurately capture these integral system components in the design drawings. Throughout the detailed design process, Entech’s team scheduled and hosted periodic video conference calls with project stakeholder representatives from the utility, the landfill, and the landfill’s hired consultants to ensure a smooth transfer of information and to give all parties the opportunity to get timely answers to questions.

In addition to the pipeline alignment, the Entech project team developed grading plans for both upstream and downstream facilities. The upstream M&R facility pad was evaluated and improved to allow space for required equipment and piping. The downstream pad was the home of a new PIG receiver and tie-in piping. After offering multiple pad options, the final selection provided an extension of an existing station, which allows the utility access via an existing station access road.