Zakeyo Ngoma

Geotechnical Engineer PE

Mr. Ngoma has fifteen years of experience performing geotechnical site investigations, project management, project estimating, and construction monitoring and inspection. As Project Engineer, Mr. Ngoma worked with design teams to perform geotechnical and geologic field exploration work for Puget Sound Energy’s 30 megawatts (MW) Unit 4 Powerhouse completed in 2013 at the Lower Baker Hydropower Generation Project and geologic field exploration work for the Lower Baker Dam Abutment Leakage Project. As Field Engineer, Mr. Ngoma has worked in land development on improvements involving wet (sewer, storm drain, and water) and dry utilities (power, telephone/cable, and gas); pavement design for commercial and residential housing projects; in-place pavement quality assurance; and meeting client demands for reports on grading, pavement design, selected backfill requirements, final grading of street subgrade, utility trench backfill verification, and building pad certification/recertification. He has also performed compaction testing for utilities, retaining wall backfill, and street and curb and gutter subgrade. With regard to utilities, Mr. Ngoma has performed field engineering design of the pipe replacement/retirement program of underground natural gas supply system for commercial and residential use; and prepared pre-inspection reports for permit application with municipalities in advance of potholing of the underground natural gas supply system to obtain manufacturer identification of the natural gas main pipe. Mr. Ngoma has also performed geotechnical engineering analyses and design of slope stabilization systems along roads pertinent to generation operations at Puget Sound Energy’s Lower Baker Dam and Upper Baker Dam Hydropower Generation Project.


Licenses and Certificates:

  • PE in Washington


Specialty Focus:

  • Dams

  • Slope Stability Design

21312 30th Drive SE, Suite 110, Bothell, WA 98021 | 425.774.0106                                  © 2016 HWA GeoSciences, Inc.

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