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Category: Oregon

Portland’s Stormwater Treatment Technology Testing Center is Open for Testing

Posted on September 27, 2022 by Jordyn White

Invasive Species Profile: European Green Crab (Carcinus maenas)

Posted on September 19, 2022 by Jordyn White

Helping Clients Reach 1200-Z NPDES Stormwater Discharge General Permit Compliance

Posted on September 8, 2022 by Jordyn White

Invasive Species Profile: Emerald Ash Borer (Agrilus planipennis) 

Posted on August 15, 2022 by Jordyn White

Herrera Announces Stormwater Source Control Improvements Project with ODOT 

Posted on July 28, 2022 by Jordyn White

The Effects of Outdated Precipitation Records on Stormwater Infrastructure

Posted on March 2, 2022 by Jordyn White

Invasive Species Profile: European Starling (Sturnus vulgaris)

Posted on January 5, 2022 by Jordyn White

Invasive Species Profile: Nutria (Myocastor coypu)

Posted on December 1, 2021 by Jordyn White

Celebrate Native American Heritage Month

Posted on November 19, 2021 by Jordyn White

Herrera’s Tyson Wright to Present at 2021 Northwest Regional SWANA Symposium

Posted on October 26, 2021 by Jordyn White

Herrera’s Innovative Trail Design for Lewis & Clark College

Posted on October 20, 2021 by Jordyn White

Construction Underway for Astoria Nordic Heritage Park

Posted on October 12, 2021 by Jordyn White

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Our Offices

Seattle, WA

2200 Sixth Avenue
Suite 1100
Seattle, WA 98121
Phone (206) 441-9080
Contact: Phil Coughlan

Portland, OR

107 SE Washington Street
Suite 140
Portland, OR 97214
Phone (503) 228-4301
Contact: Ellen McClure

Missoula, MT

101 East Broadway
Suite 610
Missoula, MT 59802
Phone (406) 998-6760
Contact: Heidi Houck

Bellingham, WA

1329 North State Street
Suite 200
Bellingham, WA 98225
Phone (360) 398-5075
Contact: Chris Webb

Casper, WY

444 S. Center St.
Casper, WY 82601
Phone (206) 787-8219
Contact: Tyson Wright, PE

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