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Environmental Services

working for clean rivers

Phone: 503-823-7740

Fax: 503-823-6995

MAILING ADDRESS: 1120 SW 5th Ave, Room 1000, Portland, OR 97204

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Concordia Sewer Repair Project

Updated March 22, 2017

Environmental Services is designing a sewer project to replace or repair up to 16,000 feet, or about 3 miles, of public sewer pipes in the Concordia Neighborhood, plus a few blocks in Woodlawn and Beaumont-Wilshire. Most of the sewer pipes are 90-100 years old and are in deteriorating condition. The sewer repairs will improve sewer and stormwater infrastructure, increase sewer capacity, and reduce the risks of street flooding and sewage releases to homes, businesses, and streets.

Survey color markings

Soil Sampling

For a month or so, beginning April 4, work crews will be drilling holes in street pavement and taking soil samples at several locations to help the design engineers understand conditions that construction crews may encounter. What the engineers learn from analysis of soil, rock and pavement samples will help them determine construction methods.

Crews have been in the neighborhood to locate and mark underground utilities by painting stripes on streets and sidewalks or placing colored flags in landscaped areas. Each color indicates what is buried below.

What to Expect During Soil Sampling

Soil sampling will occur about two times a week between Monday and Friday, between 7:00 a.m. and 6:00 p.m. Crews will work at five to eight locations a day beginning at the north end of the project area. The holes will be a few inches in diameter and will be filled immediately after the drilling is completed. This work may require temporary lane restrictions and on-street parking closures. There may be brief periods of noise, dust and mild vibration during drilling. Work at each location will last approximately one hour to one and a half hours.