Environmental Protection Agency Docket EPA-HQ-OAR-2016-0041 Proposed Rule

2016-29896: Notice of Data Availability Concerning the Renewables Enhancement and Growth Support Rule

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Public comment closed .

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Summary

This Notice provides an opportunity to comment on new information that pertains to the proposed provisions for ethanol flex fuel contained in the Renewables Enhancement and Growth Support (REGS) rule which was published in the Federal Register on November 16, 2016. The new information is contained in the report titled "Property Analysis of Ethanol--Natural Gasoline--BOB Blends to Make Flex Fuel" that has been placed in the public docket for this action. In the proposed REGS rule, the EPA proposed volatility standards for ethanol flex fuel (EFF) to prevent excessive evaporative emissions that could adversely affect the emissions control systems of flexible fuel vehicles (FFVs) and human health. The EPA proposed a fuel volatility compliance tool for use by regulated entities to demonstrate compliance with the proposed volatility standards for EFF. The new information being made available by this notice indicates that the proposed compliance tool may need to be modified to adequately estimate the volatility of EFF when natural gasoline is used as a blendstock.

The agency’s own summary, as published.

What this changes

Amends 2 parts of the Code of Federal Regulations — the standing rules this notice rewrites.

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