The established right-of-way (ROW) for this dedicated line was wrought with challenges. Upon 30% review, we determined nearly thirty (30) significant obstacles requiring specific design review and considerations. Not the least of which were two (2) rail lines, a limited access highway, sinkholes, and multiple stream crossings. An existing high-tension power line created multiple concerns including land negotiations, AC mitigation design, and utility crossing coordination. Although challenging, clear communication and collaboration between all project entities prevailed.

We provided a full construction set of pipeline alignment sheets that included pipeline construction limit of disturbance (LOD), ROW, and construction access throughout. A desktop pipeline class study and high consequence area (HCA) evaluation was conducted and then field verified. We provided pipeline sizing and material selections according to the design MAOP and associated class study. Along with these material selections and stress evaluations, We provided a pipeline bend list and upstream hot-tap tie-in details. A corridor survey and construction staking were also provided.

We provided detailed exhibits of four (4) different HDD crossings. These crossings included an HDDs for two rail lines, one state roadway, and approximately 1,500’ of HDD to cross a significant geological formation and stream. Access road exhibits, grading, and rock construction details were provided for eight (8) different locations to accommodate pipeline ROW preparation and construction.

Services Included:

• Class Location and High Consequence Area (HCA) Evaluation per DOT CFR 192
• Engineering Design, Alignment Sheet Construction Drawing Development
• Pipeline Stress and Pressure Test Calculations
• Road Crossing and Construction Access Design
• Rail Crossing and HDD Design & Evaluation
• Integration of Utility Provided Cathodic Protection and AC Mitigation Design
• Pipeline tie-in details and material selection