Wastewater Treatment Plant Improvements
2026 | Washington | Wastewater
Civil engineering design for wastewater treatment plant improvements.
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Public engineering firm profile
Gibbs & Olson, Inc.
Immersed in the communities we serve
- Services
- 10
- Projects
- 4
Overview
Gibbs & Olson, Inc. has served municipal and private clients across southwestern Washington for more than 70 years, delivering civil engineering and land surveying for water, wastewater, transportation, and stormwater infrastructure. Its services span water system planning and source development, wastewater collection and treatment, stormwater management, transportation and roadway design, site design, and GPS/RTK land surveying. Recent completed work includes wastewater treatment plant improvements, roundabout design, road safety improvements, water main evaluations, and regional trail systems throughout Cowlitz and Lewis counties.
Services
Land Surveying
Comprehensive surveying and mapping services from legal descriptions to GPS/RTK, ALTA/NSPS, and bathymetric surveys.
Water Systems
All aspects of water system engineering including system plans, modeling, source development, water quality and treatment, booster pump stations, reservoirs, and distribution piping.
Wastewater Systems
Wastewater system engineering covering collection and conveyance, pump stations, and treatment systems.
Stormwater and Drainage
Innovative stormwater management design applying current regulations, technologies, and design criteria.
Transportation Engineering
Roadway and transportation design including traffic flow analysis, pedestrian and bicycle route planning, and roundabout design.
Site Design
Site planning and design services for new construction, building additions, and multi-phase expansion projects.
Industries
Firm type
Projects
Elma Main Street & US Route 12 Roundabout
2026 | Elma, WA | Highways & Roads
Design of a roundabout at Main Street and US Route 12 in Elma, Washington.
View project sourceVader Water System Improvements
2026 | Vader, WA | Lewis County | Water Supply
Water system improvements for Lewis County, Washington.
View project sourceColumbia Heights Road Safety Improvements
2026 | Washington | Highways & Roads
Road safety improvements for Columbia Heights.
View project sourceOffices
No public values listed.