[en] On January 23, 1981 the Office of Radiation Programs, U.S. Environmental Protection Agency published in the Federal Register proposals for revisions in the existing Federal Radiation Protection Guidance for Occupational Exposures. This report is a part of the continuing analysis by EPA of the cost/feasibility of the proposed revisions. Specifically, the report evaluates each of the proposed changes in the guidance to estimate the cost of compliance to all segments of the private sector wherein impacts are expected to be significant. This study concentrates its effort on estimating the direct resource costs for each industry that must comply with the regulations that result from the revision to the guidance. These costs that are met by industry participants will account for a significant portion of the total costs associated with the guidance. These costs were estimated through a series of case studies and independent research