The following is a comparison of four acid rain control bills: S. 95 (Kerry), S. 300 (Stafford), S. 316 (Proxmire), and S. 3221 (Mitchell). The comparison is focused on prominent features of the various bills, not on section by section similarities and differences among the bills. Also, apparently non-controversial aspects of the bills, such as penalties for non-compliance, were not included. The bills are compared in the order in which they were introduced. nThere are two important notes about this comparison. First, as each bill would amend the Clean Air Act, section number references made in this analysis are made to relevant sections of the Clean Air Act. Second, under general provisions, issues raised are in rank order as they appear in various bills. They are not ordered according to importance. nFor the reader's convenience, the headings used in this comparison are arranged so that the bills may be placed side-by-side, if so desired.,CRS 87-82 ENR,"February 4, 1987.",SuDoc# LC 14. 18/3