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The City of Portland, Oregon

Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

1120 SW 5th Ave, Suite 613, Portland, OR 97204

More Contact Info

February 2010

Ecoroof Portland 2010 coming in March - 2/1/10


An Oregon construction first in northwest Portland - 2/11/10


Ecoroof Portland 2010 coming in March

February 1, 2010

Building owners and home owners thinking about adding an ecoroof to their property can get all the information they need at Ecoroof Portland, taking place March 12-13, 2010. Ecoroofs are vegetated roof systems that absorb rain to reduce stormwater runoff and last longer than conventional roofing.

Fair attendance is free. Architects, consultants, contractors, landscape architects, manufacturers, nurseries, structural engineers and suppliers will be on hand. Attendees can also learn more about how to apply for a City of Portland ecoroof incentive to offset construction costs. Incentives pay up to $5 per square foot for new ecoroof projects. The typical cost of an ecoroof in Portland ranges from $5 to $20 per square foot.

Go to for more information.

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An Oregon construction first in northwest Portland

February 11, 2010

A Portland pipeline construction project is using cutter soil mixing (CSM) machine technology for the first time in Oregon. John W. Fowler Company is the City of Portland’s construction contractor on the Balch Consolidation Conduit Project in the Northwest Industrial District. JW Fowler purchased the machine from the German company Bauer.

The 114-foot high CSM machine grinds soil then mixes cement with soil to a depth of up to 100 feet. The hardened soil and cement mixture forms sturdy tunnel shaft walls that prevent groundwater from entering the shafts.

On Wednesday, February 17, the community will have a chance to see the CSM machine, learn more about the new technology, and get an update on the Balch Conduit project.

The Balch Consolidation Conduit is one of the final projects in the City of Portland’s 20-year program to control combined sewer overflows (CSOs).

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