Site Development

EES Consulting offers comprehensive civil engineering capabilities for site, drainage and fencing designs. This includes estimates of cut/fill quantities and design of erosion control measures. We utilize software programs for cut/fill estimates, and surveying data is usually obtained from others based on EES’s surveying specifications. Our experience includes design of CMU-type perimeter walls for screening and aesthetically pleasing appearance of the substation, as well as conventional chain link perimeter fencing. Depending on the site topography, retaining walls may need to be included in the site development design.

Grays Harbor PUD

EES Consulting was retained to provide engineering design and permitting support for replacement of an existing substation with the New Central Park 115 – 12.47kV substation consisting of two 115-kV transmission lines, ultimately two 15/20/25 MVA power transformers and two lineups of 15-kV metal-clad switchgear. EES Consulting prepared site development, retaining wall design, oil containment and drainage design, fencing design, and foundation design for a Public Works Contract, and steel support structure design, bus and electrical assembly design, conduit design and ground grid design for a District Work Package. We also prepared permitting applications and accompanying drawings for the necessary environmental and construction permits.

Snohomish County PUD

EES Consulting is currently providing engineering design for two small hydroelectric generating plants, Calligan and Hancock, each with an installed generating capacity of about 7 MW. These services include detail design of intakes, penstocks, powerhouses, switchyards and electrical interconnections to the power grid. The projects are scheduled for completion in 2015. Further, EES Consulting recently completed detail design and construction support for another small hydroelectric plant, Youngs Creek, (about 7 MW capacity) for the District, which has successfully been on line since October, 2011.

Featured Projects

Los Angeles County Aliso Canyon

The County of Los Angeles asked EES Consulting to evaluate alternatives to mitigate the need to withdraw natural gas from the Aliso Canyon storage facility. The facility was used to supply gas during peak winter usage as well as to supply natural gas-fired generators during peak summer demand, but it was shut down after a massive leak released more than 100,000 metric tons of methane. EES found that measures put in place by utilities in Southern California to maintain system reliability without utilizing Aliso Canyon were working, and that resuming natural gas injections was unnecessary in the near term. In the longer term, the acquisition of demand response, energy storage, and energy efficiency could effectively displace the need for Aliso Canyon. EES also provided a series of recommendations to improve the implementation of the mitigation measures. (Image:Earthworks)

Box Canyon Project Studies

Public Utility District No. 1 of Pend Oreille County, in Washington state, selected EES Consulting as the lead consultant for relicensing studies for the Box Canyon Hydroelectric Project.  The relicensing involved numerous engineering and resource studies.  EES Consulting staff members performed studies and managed and coordinated activities of consultants and subconsultants who conducted engineering and environmental studies for project license amendment and relicensing.