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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Avenue, Suite 1000, Portland, OR 97204

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Columbia Slough Trail segment to close during construction

Construction at the Columbia Boulevard Wastewater Treatment Plant at 5001 N Columbia Boulevard will detour pedestrian and bicycle traffic on the Columbia Slough Trail north of the plant beginning next week. Construction will close the trail between the railroad tracks east of the plant and North Portland Road to the west (see map below) to all traffic from Wednesday, June 13 to Friday, June 15 from 7:00 a.m. until 4:00 p.m. each day.

Trail users can detour to Columbia Boulevard south of the plant and the trail segment east of the plant.

For more information contact Linc Mann, 503-823-5328.

Lagoon reconstruction project map

Heartbleed Security Notice

A serious security vulnerability known as "Heartbleed" was recently discovered in OpenSSL, a popular software library commonly used by many websites on the internet to encrypt communication between a user's computer and a web server. is NOT affected by this vulnerability as it does not use the OpenSSL software library. Please rest assured we are dedicated to protecting your security on this website.