In the "Rules and Regulations" section of thisFederal Register, EPA is approving the State's SIP revision as a direct final rule without prior proposal because EPA views this as a noncontroversial amendment and anticipates no adverse comment. The EPA has explained reasons for this approval in the preamble to the direct final rule. If EPA receives no relevant adverse comment, EPA will take no further action on this proposed rule. If EPA receives relevant adverse comment, EPA will withdraw the direct final rule and it will not take effect. In that event, EPA will addresss all relevant public comments in a subsequent final rule based on this proposed rule. In either event, EPA will not institute a second comment period on this action. Any parties interested in commenting must do so at this time.