Summary

Revises parts of the Clean Air Act that govern fuel waivers and Reid Vapor Pressure (RVP) requirements to make it easier for fuels or additives that are substantially similar to certified fuels — or that meet existing waivers except for RVP limits — to be introduced into commerce when they meet other RVP conditions. It also adjusts certain numeric RVP ranges and replaces some statutory notification wording with the act’s short-title language. Separately, it requires the EPA to restore or place in accounts certain Renewable Fuel Standard (RFS) credits that small refineries retired for 2016–2018 and that filed timely petitions, and to deem those refineries eligible for future compliance years subject to specified timing and eligibility rules.

• Alters Clean Air Act waiver language to expand which fuels/additives may enter commerce when they are substantially similar to certified fuels or meet waivers except for RVP.
• Modifies Reid Vapor Pressure provisions by widening two numeric references from a single "10 percent" figure to a "10 to 15 percent" range.
• Replaces certain statutory notification wording with the act's short-title wording (the short title is established separately).
• Creates a new statutory entitlement for certain small refineries to have RFS credits (RINs) they retired for 2016–2018 returned or placed in their EMTS accounts if they filed timely petitions.
• Deemed eligibility: those eligible small refineries will be treated as eligible for future compliance years, subject to timing and eligibility conditions.
• No new appropriations, taxes, emergency designations, or explicit federal funding are included in the text.
• Implementation relies on EPA administrative processes (credit accounting in EMTS and eligibility determinations).
• Likely to affect fuel market participants, RIN markets, and EPA regulatory workload; may raise air-quality or legal challenge concerns.