City role: indirect
Air quality: the number of incidents in which the annual average concentration of particulate matter with a diameter smaller than 2.5 microns (PM 2.5) exceeds the primary federal standard for PM (currently 12 μg/m3) as measured by the closest public air quality monitoring station. Water quality: the percentage of right-of-way within Redmond city limits, by area, that is subject to basic water quality treatment.

Air quality. Redmond and the region remained in “attainment” for PM 2.5 in 2015 under the federal Clean Air Act; the federal standard for PM 2.5 average annual concentrations is currently 12 μg/m3. PM 2.5 concentrations are influenced by several factors including vehicle miles traveled (VMT), vehicle emissions technology, and fuel mix, so decisions made at the local level have limited impact. Nevertheless, PM 2.5 is an important measure to follow since it is one of the pollutants most harmful to human health.

Water quality. The percentage of right-of-way with basic water quality treatment remained at 27 percent in 2015. The Public Works Department has established a goal to provide basic water quality treatment to 100 percent of City right-of-way by 2112. The 2030 target of 36 percent is derived from that goal, with the assumption that Redmond’s rights-of-way will receive basic treatment at a rate proportional to the rest of the city.

Source: Puget Sound Clean Air Agency, Public Works Department

Updated March 2016

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Lori Peckol

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