Small Business Superfund Fairness Act

Small Business Superfund Fairness Act - Amends the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 to absolve a small business concern of liability for response costs at a National Priority List facility under provisions governing arrangement for treatment, disposal, or transport, or acceptance for transport, of hazardous substances to the extent that the materials concerned consist of municipal solid waste or other materials that do not or would not contribute significantly to the cost of the response action. Defines a "small business concern" as an entity that on average over the previous three years has no more than 100 full-time employees. Makes this Act retroactively applicable to actions brought before its enactment in which there was no final judgment. Requires the President, as promptly as possible, to offer to reach a final administrative or judicial settlement with potentially responsible parties who are small businesses demonstrating an inability to pay response costs.