The EPA is promulgating, as a direct final rule, amendments to the ``National Emission Standards for Hazardous Air Pollutants for Source Categories: Gasoline Distribution (Stage I)'' (the ``Gasoline Distribution NESHAP''). These amendments implement a proposed settlement agreement with the American Petroleum Institute noticed for comment on November 15, 1996 regarding improvements in the screening equations for determining applicability of the Gasoline Distribution NESHAP. This action also addresses some clarifications to the NESHAP that were requested by other parties. These clarifications do not change the level of the standards or the intent of the NESHAP promulgated in 1994. In the proposed rules section of this Federal Register, the EPA is proposing a rule that is identical to this direct final rule. If significant, adverse comments are received on the proposed rule by the due date (see DATES section below), this direct final rule will be withdrawn and all such comments will be addressed in a subsequent final rule based on the proposed rule. If no significant, adverse comments are timely received on the proposed rule, then the direct final rule remains effective upon publication, and no further action is contemplated on the parallel proposal published today.