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    • Leadership
    • Our Values
    • Our Culture
    • Our Clients
    • Celebrating 90 Years
  • Projects
  • Careers
  • Contact Us
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  • About us
    • Leadership
    • Our Values
    • Our Culture
    • Our Clients
  • Projects
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  • Contact Us
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  • About us
    • Leadership
    • Our Values
    • Our Culture
    • Our Clients
  • Projects
  • Careers
  • Contact Us
Our Work

Projects

Building the future of the infastructure industry, one project at a time.

All Projects
Wastewater
Transportation
Water
Stormwater
Utilities
All Projects

Sumner Regional Wastewater Treatment Facitity

McAllister Wellfield Corrosion Control

Reservoir No 2 & Water System Improvements

Sunnyside Wastewater Treatment Plant

Wastewater Treatment Plant Upgrade

Reclaimed Water Storage Project

Reecer Creek Floodplain Restoration

Carbonado Water and Sewer Improvements

Tommy Thompson Trail Phases I and II

Gooseberry Point WWTP Facility

Union Ave & Rainier St Roundabout

Log Cabin Road Reservoir

Wastewater

Sumner Regional Wastewater Treatment Facitity

Sunnyside Wastewater Treatment Plant

Wastewater Treatment Plant Upgrade

Reclaimed Water Storage Project

Carbonado Water and Sewer Improvements

Gooseberry Point WWTP Facility

Transportation

Union Ave & Rainier St Roundabout

Water

McAllister Wellfield Corrosion Control

Reservoir No 2 & Water System Improvements

Reclaimed Water Storage Project

Carbonado Water and Sewer Improvements

Log Cabin Road Reservoir

Stormwater

Reclaimed Water Storage Project

Reecer Creek Floodplain Restoration

Utilities

Carbonado Water and Sewer Improvements

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SEATTLE

1130 Rainier Ave. South, Suite 300
Seattle, WA 98144

206.284.0860
gr*********@*-o.com

ARLINGTON

3710 168th Street NE, Bldg. B, Suite 210
Arlington, WA 98223

360.454.5490
ar*******@*-o.com

OLYMPIA

2102 Carriage Drive SW, Bldg. I
Olympia, WA 98502

360.292.7481
ol*****@*-o.com

VANCOUVER

8513 NE Hazel Dell Ave., Suite 202
Vancouver, WA 98665

360.571.3350
va*******@*-o.com

WENATCHEE

11 Spokane Street, Suite 105
Wenatchee, WA 98801

509.853.2460
we*******@*-o.com

YAKIMA

180 Iron Horse Court
Yakima, WA 98901

509.453.4833
ya****@*-o.com

Projects
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