With today's action EPA is finalizing certain proposed modifications to the reformulated gasoline (RFG) and conventional gasoline regulations. Through the 1990 amendments to the Clean Air Act (CAA), Congress directed EPA to publish rules requiring that gasoline sold in certain areas be reformulated to reduce vehicle emissions of toxic and ozone-forming compounds. Congress also directed EPA to establish rules setting anti-dumping standards for non-reformulated, or "conventional" gasoline. EPA published rules for the certification and enforcement of RFG and provisions for conventional gasoline on February 16, 1994 at 59 FR 7716. Based on experience gained since the promulgation of these regulations, on July 11, 1997, we proposed a variety of revisions to the regulations relating to emissions standards, emissions models, compliance-related requirements and enforcement provisions. In a final rule published on December 31, 1997, we took final action on several of the proposed revisions. Today's action finalizes certain other of the proposed revisions. The revisions in this final rule involve both RFG and conventional gasoline. This rule finalizes procedures for combining finished gasoline with other products to produce new blends of gasoline. These procedures allow refiners to use conventional gasoline to produce RFG, and to reclassify RFG with regard to VOC classification, activities which were previously prohibited under the regulations. This rule also identifies procedures and requirements regarding the change of service of gasoline storage tanks. The emissions benefits achieved from the RFG and conventional gasoline programs will not be reduced as a result of this final rule. On May 17, 2001 the National Energy Policy Development Group (NEPD) recommended that EPA "study opportunities to maintain or improve the environmental benefits of state and local `boutique' clean fuel programs while exploring ways to increase the flexibility of the fuels distribution infrastruct