EEG helped PacifiCorp efficiently and safely comply with environmental challenges associated with constructing the 168-mile Sigurd to Red Butte 345-kV Transmission Line in southern Utah. The engineering, procurement and construction (EPC) project took place in environmentally sensitive areas administered by the Bureau of Land Management (BLM), U.S. Forest Service and state owned and private property. This environmentally complex project totaled 792 structures, traversed five counties and included designated habitat for special status wildlife and plants, wetland and riparian areas and control of noxious weeds. EEG coordinated conservation measures with the BLM and Forest Service for sensitive areas during pre‑construction, construction and restoration.
Project design and mitigation measures for this project included educating project personnel about:
- sensitive species (e.g., bald eagles, pronghorn, Utah prairie dog, southwestern, wild horses, Ute lady’s tresses, Ward’s beardtongue, Elsinore buckwheat and more.)
- activities restricted to designated work areas,
- processes for notifying biological monitors of any encounter with sensitive wildlife,
- exclusion zones adjacent to work sites,
- construction site materials and excavation practices for avoiding wildlife prior to commencing each day’s work, and
- complying with speed limits and prohibitions on interacting with wildlife.
EEG developed and wrote a wildlife management plan for authorities who approved a construction extension.
PacifiCorp (MidAmerican Energy Holdings Co.)
November 2013 to September 2015
This was the largest wetland area on the SRB Project and provided important habitat for wildlife and plants. A pair of red-tailed hawks nested nearby and hunted prey in the area. Migratory songbirds were also abundant in the area.
In order to prevent an infestation of noxious weeds to this sensitive resource area, it was mandatory that all vehicles and equipment to be washed prior to entry. A weed wash station was located downslope, on a paved road, and away from this area.