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The East Side Big Pipe project, begun in 2006 and finished in 2011, was the largest of a 20-year series of projects designed to nearly eliminate combined sewer overflows (CSO)s into the Willamette River and the Columbia Slough. The combined projects were completed on time, and they reduced CSOs into the river by 94 percent and into the slough ...
The United States Environmental Protection Agency (EPA) issues Effluent Guideline regulations for categories of industrial sources of water pollution under Title III of the Clean Water Act (CWA). [1] The standards are technology-based, i.e. they are based on the performance of treatment and control technologies (e.g., Best Available Technology ).
A Discharge Monitoring Report (DMR) is a United States regulatory term for a periodic water pollution report prepared by industries, municipalities and other facilities discharging to surface waters. [ 1 ] : 8–14 The facilities collect wastewater samples, conduct chemical and/or biological tests of the samples, and submit reports to a state ...
A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.
Oregon's Multnomah County, home to Portland, has added the state's largest natural gas utility to its $51.5 billion climate lawsuit against fossil fuel companies over their role in the region's ...
Command and control policies are direct government regulations. [62] The CWA is designed with this kind of direct command and control regulation for point source pollution. However, command and control regulations through the CWA apply to nonpoint source pollution a lesser extent. TMDLs are one tool in the CWA that directly regulates NPS effluent.
You can use wood-burning fireplaces, stoves, inserts and pellet stoves on any day when fine particulate pollution (PM2.5) isn’t forecast to be high. Burn statuses are updated online, ...
NW Natural, formerly Northwest Natural Gas Company, is an American publicly traded utility headquartered in Portland, Oregon, United States.Primarily a natural gas distributor, the company services residential, commercial, and industrial customers in Western Oregon and Southwest Washington in the Pacific Northwest.