    Sentence ts Under the defaut method, eighty percent of the total amount of sulfur  ioxide alowances avalable for allocation each yer wil be allocated to Acid ain  Program units with coal as thelr primary or secondary fuel or residual ll as their  primary ful, Isted in the Administrator's Emisions Scorecard 2000, Appendix B  (2000 Data for $02, Nox, C02, Heat Input, and Other Parameters), Table Bt (Al  Data fr Al Units)              Sentence 2.20% of the sufurdoxde allmance for each year isin the Acid ain  Program.