DEA is experienced in overhead and underground electrical transmission line design, route selection, permitting and project management for transmission lines up to and including 500 kV. DEA’s services include environmental studies, land surveying, hydrographic surveys, public outreach, electrical engineering design, transmission structure design (tubular steel, lattice, concrete and wood structures) and civil/foundation design. The company also provides special studies on EMF, AC interference, noise, visual impacts, wetlands, and wildlife protection.
DEA provides engineering design for distribution and transmission substations up to 500 kV on existing and green field sites. The firm’s experience includes air and gas insulated substations (GIS), HVDC and upgrades to existing substations. Services include environmental studies, permitting, landscape design, public outreach, electrical engineering design, civil/structural design, oil containment, and protection and control. The company also provides special studies on fault duty, grounding, breaker/fuse coordination, animal/bird protection, and visual impact studies.
DEA provides siting, permitting, survey and mapping, and site civil engineering, for hydroelectric and gas-fired power generation facilities. DEA prepares environmental studies, including those required under CEQA, NEPA and the CEC; designs and permits water and waste water systems; and carries out transportation/traffic analysis.