• Step 3 – Source Selection

    • Determine pollutants to consider
    • Estimate baseline visibility impact for source selection
    • Document the source selection process and result
  • STEP 4 – Characterize Control Measures Factors

    • Determine emission control measures to consider
    • Selection of emissions information for characterizing emissions-related factors
    • Characterize the cost of compliance (Factor 1)
    • Characterize the time necessary for compliance (Factor 2)
    • Characterize energy and non-air environmental impacts (Factor 3)
    • Characterize remaining useful life of the source (Factor 4)
    • Characterize visibility benefits
  • STEP 5 – Select Control Measures for Reasonable Progress

    • The cost of compliance and visibility benefits (Factor 1)
    • Time necessary for compliance (Factor 2)
    • Energy impacts and non-air environmental impacts (Factor 3)
    • Remaining useful life (Factor 4)
    • Establish emission limits, compliance schedules, and other measures necessary to make reasonable progress

For more information, please visit the Department of Environmental Conservation web page: