Wallis Engineering
  • Our Firm
  • Our Services
  • Our Team
  • Our Clients
  • Careers
  • Contact
  • Our Firm
  • Our Services
  • Our Team
  • Our Clients
  • Careers
  • Contact

Our Services

Our firm provides planning, design and construction phase services to help local government. We also provide miscellaneous municipal services, including grant applications, GIS assistance, and program management.

Primary services we offer:

  • Wastewater
  • Water
  • Transportation
  • Stormwater
  • Municipal Services
  • Camas Lacamas Sewer Pump Station
  • Washougal Historic Downtown Improvements
  • Washington County Reedville Trail Improvements
  • Washougal WWTP Improvements
  • Oregon City Linn Avenue Sewer Replacement
  • Washougal E Street Improvements
  • Hillsboro Stormwater Permanent Outfall Repair
  • Oregon City Main Street Improvements
  • Kelso Donation Sewer Pump Station
  • Tualatin Garden Corner Curves Transportation Improvements
  • Oregon City McLoughlin Promenade
  • Stevenson WWTP Improvements

Wastewater

Our wastewater projects include everything from full treatment plant expansions to small gravity system
rehabilitation. Our work includes:

  • Pump stations
  • Wastewater treatment plants
  • Collection system design and upgrades
  • Trenchless technologies
  • Evaluations for rehabilitation versus replacement
  • Combined sewer overflow
  • Infiltration and inflow evaluations and management
  • Odor control
  • Corrosion control
Stevenson: Wastewater
Treatment Plant Improvements

Water

We have extensive experience with a wide variety of complex water system projects, including:

  • Water system master planning
  • Hydraulic modeling and analysis
  • Well studies and design
  • Water treatment design
  • Distribution system design
  • Cathodic protection
  • Metering and flow control systems
  • Booster pump station design
  • Reservoir design
Skamania County PUD: Carson
Water System Improvements

Transportation

Our firm has a strong transportation core, and we are passionate advocates for a safer, more sustainable transportation system. Our experience with transportation system projects includes:

  • Corridor planning
  • Streetscape planning and design
  • Conceptual alternative planning and design
  • Pavement management
  • Full street reconstruction
  • Intersection design
  • Sidewalk and pedestrian retrofits
  • Bicyclist retrofits
  • Multi-use path and trail designs
Tualatin: Garden Corner Curves
Transportation Improvements

Stormwater

Most of our stormwater projects arise from transportation system work, but our work also includes a wide variety of standalone stormwater projects. These include:

  • Stormwater master planning
  • Subarea plans
  • Detention, retention, water quality analysis and design
  • Pump station design
  • Open channel and piped conveyance
  • Culverts
  • CSO control
  • Inlets and outfalls
Beaverton: Erickson Interceptor
Sewer Improvements

Municipal

We provide the following services to cities, counties, water, sewer and drainage districts:

  • Program management
  • Contract city and district engineering
  • GIS services
  • Capital facilities planning
  • Grant/funding applications
  • Construction management and inspection
  • Plan review of private development projects
Oregon City: GIS Mapping for I&I Pipe Condition Assessment

LOCATIONS

Vancouver, WA

Oregon City, OR

ABOUT

Our Team

Careers

Contact

SERVICES

Our Firm

Our Services

Our Clients

(360) 695-7041

© Wallis Engineering, PLLC

LOCATIONS

Vancouver, WA

Oregon City, OR

ABOUT

Our Team

Careers

Contact

SERVICES

Our Firm

Our Services

Our Clients

(360) 695-7041

© Wallis Engineering, PLLC

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