Cleaner air moves Pierce County, Tacoma off polluters list – U.S. Environmental Protection Agency says that Tacoma and Pierce County are now in attainment of federal clean air standards for fine particulates. The Puget Sound Clean Air Agency had found that the pollution came mostly from wood-burning stoves and fireplaces. Cedar River Group facilitated a stakeholder task force that identified strategies to promote changes in burn bans and residents’ use of stoves/fireplaces that would lead to cleaner air.