Table 7-5: Wyoming Air Quality Nonattainment Areas for Particulate Matter (PM-10),,,,,, County,Area,Nonattainment in Year,Redesignation to attainment,Classification,Part or whole county,Population (2000) Sheridan ,Sheridan,95 96 97 98 99 00 01 ,NA, Moderate ,Part,"15,782" KEY: NA = not applicable.,,,,,, "SOURCE: U.S. Environmental Protection Agency, Green Book, available at http://www.epa.gov/oar/oaqps/greenbk/anay.html as of Apr. 20, 2002.",,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,, ,,,,,,