Client: Dominion Energy via C2 Environmental Inc.
Approximate Design Cost: $169,998.92
Project Timeline: Design 2021-Present, Construction 2022 (Est.)
Project Manager: Scott C. Blossom, P.E., CFM, LEED AP
Design Engineers: Elisabetta Civiletto, Courtney Samuels
Environmental Scientists: Ryan J. Schopp, Katie Foster, Mimi Hill
Dominion Energy proposed to construct a new 230kV double circuit overhead electric transmission lines from an existing BECO Substation to a proposed DTC Substation in Loudoun County, Virginia. The new transmission line was constructed on single pole structures within new 100-foot wide right -of-way (ROW). The approximate 34-acre project area, located within Broad Run floodplain, crosses several protective easements, and is characterized by steep slopes, severe erosion hazard, and severe rutting hazard. This project focuses on stormwater management using the Virginia Runoff Reduction and Energy Balance Methodology, along with erosion and sediment control design and floodplain management.
Project Role
BCE conducted hydrologic and hydraulic data review and no-rise analysis to evaluate 10-year water surface elevations, based on Flood Insurance Study (FIS) data and HEC-RAS modeling. Additionally, BCE provided assessment, design, construction documents, utility coordination, and erosion and sediment control plans. A floodplain study was conducted to evaluate the pre- and post-project conditions and potential adverse impacts on adjacent properties. The Virginia Runoff Reduction Method (VRRM) analysis evaluated the load reduction requirements and showed that no load reduction was required within the limits of disturbance, largely due to the presence of a conservation easement that already preserved areas of the site. To evaluate stormwater quantity compliance, post-development runoff was modeled and analyzed at each location where runoff leaves the project site.
