Federal Register #EPA-R05-OAR-2018-0788

EPA Proposed Approval of Indiana SIP for 2015 Ozone NAAQS Prong 4 (Visibility) Requirements

This opportunity concerns the Environmental Protection Agency's (EPA) proposed approval of a portion of Indiana's State Implementation Plan (SIP) for the 2015 ozone National Ambient Air Quality Standards (NAAQS), specifically addressing visibility protection (Prong 4): - Government Buyer: - Environmental Protection Agency (EPA) - OEMs and Vendors: - No OEMs or vendors are mentioned, as this is a regulatory action, not a procurement - Products/Services Requested: - No products or services are being requested; the action is regulatory in nature - Unique or Notable Requirements: - The EPA is seeking public comment on the adequacy of Indiana's SIP provisions to prevent emissions that interfere with visibility protection in other states - Indiana's regional haze SIP for the second implementation period has already been fully approved, satisfying federal visibility requirements - This action does not involve the purchase of goods or services, but rather the approval of a regulatory submission from the State of Indiana

Description

The Environmental Protection Agency (EPA) is proposing to approve a portion of Indiana's State Implementation Plan (SIP) submission related to the infrastructure requirements of section 110 of the Clean Air Act for the 2015 ozone National Ambient Air Quality Standards. This approval focuses on the Prong 4 requirement, ensuring that Indiana's SIP contains adequate provisions to prohibit emissions that interfere with visibility protection measures in other states' SIPs. Indiana's regional haze SIP for the second implementation period has been fully approved, satisfying these visibility protection requirements. Public comments on this proposed rule are accepted until May 11, 2026.

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