Approval and Promulgation of State Implementation Plans; State of Colorado; Revisions to the Denver Emergency Episode Plan

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EPA is proposing to approve State Implementation Plan (SIP) revisions to the Denver Emergency Episode Plan submitted by the State of Colorado on September 16, 1997. EPA has determined that the Denver Emergency Episode Plan revisions meet the requirements for the prevention of air pollution emergency episodes with ambient concentrations of air pollutants that may endanger public health and welfare. In the "Rules and Regulations" section of this Federal Register, EPA is approving the State's SIP revision as a direct final rule without prior proposal because the Agency views this as a non- controversial SIP revision and anticipates no adverse comments. A detailed rationale for the approval is set forth in the preamble to the direct final rule. If EPA receives no adverse comments, EPA will not take further action on this proposed rule. If EPA receives adverse comments, EPA will withdraw the direct final rule and it will not take effect. EPA will address all public comments in a subsequent final rule based on this proposed rule. EPA will not institute a second comment period on this action. Any parties interested in commenting must do so at this time. Please note that if EPA receives ad