[Federal Register Volume 83, Number 149 (Thursday, August 2, 2018)]
[Rules and Regulations]
[Pages 37735-37746]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-16246]



========================================================================
Rules and Regulations
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains regulatory documents 
having general applicability and legal effect, most of which are keyed 
to and codified in the Code of Federal Regulations, which is published 
under 50 titles pursuant to 44 U.S.C. 1510.

The Code of Federal Regulations is sold by the Superintendent of Documents. 

========================================================================


Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / 
Rules and Regulations

[[Page 37735]]



ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 80

[EPA-HQ-OAR-2017-0655; FRL-9981-57-OAR]
RIN 2060-AT82


Renewable Fuel Standard Program: Grain Sorghum Oil Pathway

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: In this action, the Environmental Protection Agency (EPA) 
determines that biodiesel and heating oil produced from distillers 
sorghum oil via a transesterification process, and renewable diesel, 
jet fuel, heating oil, naphtha, and liquefied petroleum gas (LPG) 
produced from distillers sorghum oil via a hydrotreating process, meet 
the lifecycle GHG emissions reduction threshold of 50 percent required 
for advanced biofuels and biomass-based diesel under the Renewable Fuel 
Standard (RFS) program. Based on these analyses, EPA is adding these 
pathways to the list of approved renewable fuel production pathways in 
the RFS regulations. EPA is also amending the RFS regulations by adding 
a new definition of ``distillers sorghum oil,'' and replacing existing 
references to ``non-food grade corn oil'' with the newly defined term 
``distillers corn oil.''

DATES: The final rule is effective October 1, 2018.

ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-HQ-OAR-2017-0655. All the documents in the docket are 
listed on the http://www.regulations.gov website. Although listed in 
the index, some information is not publicly available, e.g., CBI or 
other information whose disclosure is restricted by statute. Certain 
other material, such as copyrighted material, is not placed on the 
internet and will be publicly available only in hard copy form. 
Publicly available docket materials are available electronically 
through http://www.regulations.gov.

FOR FURTHER INFORMATION CONTACT: Diana Galperin, Office of Air and 
Radiation, Office of Transportation and Air Quality, Mail Code: 6401A, 
U.S. Environmental Protection Agency, 1200 Pennsylvania Avenue NW, 
Washington, DC 20460; telephone number: 202-564-5687; email address: 
<a href="/cdn-cgi/l/email-protection#640305081401160d0a4a000d050a05240114054a030b12"><span class="__cf_email__" data-cfemail="0760666b7762756e6929636e6669664762776629606871">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Outline of This Preamble

I. General Information
    A. Does this action apply to me?
    B. What action is the agency taking?
    C. What is the agency's authority for taking this action?
    D. What are the incremental costs and benefits of this action?
II. Introduction
III. Analysis of GHG Emissions Associated With Production of 
Biofuels From Distillers Sorghum Oil
    A. Overview of Distillers Sorghum Oil
    B. Analysis of Lifecycle GHG Emissions
    1. Livestock Sector Impacts
    a. Nutritional Impacts
    b. Mass Loss
    2. Feedstock Production
    3. Feedstock Transport
    4. Feedstock Pretreatment
    5. Fuel Production
    6. Fuel Distribution
    7. Fuel Use
    8. Results of GHG Lifecycle Analysis
IV. Definition of Distillers Corn Oil
V. Summary
VI. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review and 
Executive Order 13563: Improving Regulation and Regulatory Review
    B. Executive Order 13771: Reducing Regulations and Controlling 
Regulatory Costs
    C. Paperwork Reduction Act (PRA)
    D. Regulatory Flexibility Act (RFA)
    E. Unfunded Mandates Reform Act (UMRA)
    F. Executive Order 13132: Federalism
    G. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    H. Executive Order 13045: Protection of Children From 
Environmental Health Risks and Safety Risks
    I. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use
    J. National Technology Transfer Advancement Act (NTTAA)
    K. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations
    L. Congressional Review Act (CRA)

I. General Information

A. Does this action apply to me?

    Entities potentially affected by this action are those involved 
with the production, distribution, and sale of transportation fuels, 
including gasoline and diesel fuel or renewable fuels such as ethanol, 
biodiesel, heating oil, renewable diesel, naphtha and liquefied 
petroleum gas. Potentially regulated categories include:
---------------------------------------------------------------------------

    \1\ North American Industry Classification System.

------------------------------------------------------------------------
       Examples of potentially affected entities         NAICS\1\ codes
------------------------------------------------------------------------
Petroleum refineries (including importers)............            324110
Ethyl alcohol manufacturing...........................            325193
Other basic organic chemical manufacturing............            325199
Chemical and allied products merchant wholesalers.....            424690
Petroleum bulk stations and terminals.................    424710, 424720
Other fuel dealers....................................            454310
------------------------------------------------------------------------

    This table is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be regulated by this 
action. This table lists the types of entities that the EPA is now 
aware could potentially be affected by

[[Page 37736]]

this action. Other types of entities not listed in the table could also 
be affected. To determine whether your entity is regulated by this 
action, you should carefully examine the applicability criteria in the 
referenced regulations. If you have any questions regarding the 
applicability of this action to a particular entity, consult the person 
listed in the FOR FURTHER INFORMATION CONTACT section.

B. What action is the agency taking?

    EPA is amending the RFS regulations to add a new definition of 
``distillers sorghum oil'' and to replace existing references to ``non-
food grade corn oil'' with the newly defined term ``distillers corn 
oil.'' This rule also adds the following pathways to rows F and H of 
Table 1 to 80.1426: (1) Biodiesel and heating oil produced from 
distillers sorghum oil and commingled distillers sorghum and corn oil 
via a transesterification process; and (2) renewable diesel, jet fuel, 
and heating oil produced from distillers sorghum oil and commingled 
distillers sorghum and corn oil via a hydrotreating process. Pathways 
for naphtha and LPG produced from distillers sorghum oil via a 
hydrotreating process are also added to row I of Table 1 to 40 CFR 
80.1426. These pathways are approved for biomass-based diesel (D-code 
4) or advanced biofuel (D-code 5) renewable identification numbers 
(RINs), depending on the fuel type and whether the production process 
involves co-processing renewable biomass and petroleum.\2\
---------------------------------------------------------------------------

    \2\ The term ``biomass-based diesel'' is defined in the statute 
to exclude any renewable fuels derived from co-processing biomass 
with a petroleum feedstock. CAA Section 211(o)(1)(D).
---------------------------------------------------------------------------

C. What is the agency's authority for taking this action?

    Statutory authority for this action comes from Clean Air Act 
sections 114, 208, 211, and 301.

D. What are the incremental costs and benefits of this action?

    There are no incremental costs from this action. This action allows 
for additional flexibility and feedstock production options for 
participating in the Renewable Fuel Standard (RFS) program.

II. Introduction

    Section 211(o) of the Clean Air Act (CAA) establishes the RFS 
program, under which EPA sets annual percentage standards specifying 
the amount of renewable fuel, as well as three subcategories of 
renewable fuel, that must be used to reduce or replace fossil fuel 
present in transportation fuel, heating oil, or jet fuel. Non-exempt 
renewable fuels must achieve at least a 20 percent reduction in 
lifecycle greenhouse gas (GHG) emissions as compared to a 2005 
petroleum baseline.\3\ Advanced biofuel and biomass-based diesel must 
achieve at least a 50 percent reduction, and cellulosic biofuel must 
achieve at least a 60 percent reduction.
---------------------------------------------------------------------------

    \3\ A baseline volume of renewable fuel produced from facilities 
that commenced construction on or before December 19, 2007, and 
which completed construction by December 19, 2010, without an 18-
month hiatus in construction, is exempt from the minimum 20 percent 
GHG reduction requirement that otherwise applies to renewable fuel. 
In addition, a baseline volume of ethanol from facilities that 
commenced construction after December 19, 2007, and on or before 
December 31, 2009, qualifies for the same exemption if construction 
was completed within 36 months without an 18-month hiatus in 
construction; the facility was fired with natural gas, biomass, or 
any combination thereof, at all times the facility operated between 
December 19, 2007, and December 31, 2009; and the baseline volume 
continues to be produced through processes fired with natural gas, 
biomass, or any combination thereof.
---------------------------------------------------------------------------

    In addition to the lifecycle GHG reduction requirements, there are 
other definitional criteria for renewable fuel (e.g., produced from 
renewable biomass as defined in the statute and regulations, and used 
to reduce or replace the quantity of fossil fuel present in 
transportation fuel, heating oil, or jet fuel) in CAA section 211(o) 
and the RFS regulations at 40 CFR part 80 subpart M.
    Since the formation of the RFS program, EPA has periodically 
promulgated rules to add new pathways to the regulations.\4\ In 
addition, EPA has approved facility-specific pathways through the 
petition process in 40 CFR 80.1416. There are three critical components 
of approved fuel pathways under the RFS program: (1) Fuel type; (2) 
feedstock; and (3) production process. Each pathway is associated with 
a specific ``D-code'' that corresponds to one of the four categories of 
renewable fuel--general renewable fuel, advanced biofuel, cellulosic 
biofuel, or biomass-based diesel.
---------------------------------------------------------------------------

    \4\ Please see information on Pathways I and Pathways II in 40 
CFR part 80 subpart M, and in the Federal Register at 78 FR 14190 
(March 5, 2013) and 79 FR 42128 (July 18, 2014). More information on 
these can be found at: https://www.epa.gov/renewable-fuel-standard-program/final-rule-identify-additional-fuel-pathways-under-renewable-fuel and https://www.epa.gov/renewable-fuel-standard-program/renewable-fuel-pathways-ii-final-rule-identify-additional-fuel.
---------------------------------------------------------------------------

    EPA's lifecycle analyses are used to assess the overall GHG 
emissions of a fuel throughout each stage of its production and use. 
The results of these analyses, considering uncertainty and the weight 
of available evidence, are used to determine whether a fuel meets the 
necessary GHG reductions required under the CAA. Lifecycle analysis 
includes an assessment of emissions related to the full fuel lifecycle, 
including feedstock production, feedstock transportation, fuel 
production, fuel transportation and distribution, and tailpipe 
emissions. Per the CAA definition of lifecycle GHG emissions, EPA's 
lifecycle analyses also include an assessment of significant indirect 
emissions, such as those from land use changes and agricultural sector 
impacts.
    EPA received a petition from the National Sorghum Producers (NSP), 
submitted under partial claims of confidential business information 
(CBI), requesting that EPA evaluate the GHG emissions associated with 
biofuels produced using as a feedstock grain sorghum oil derived from 
dry mill ethanol production, and that EPA provide a determination of 
the renewable fuel categories, if any, for which such biofuels may be 
eligible. EPA issued a proposed rule in December 2017 \5\ to establish 
approved pathways for the use of grain sorghum oil, and received 
comments on this proposal. In this action, EPA is amending the RFS 
program regulations to define the term ``distillers sorghum oil.'' We 
are also adding pathways to rows F, H and I of Table 1 to 40 CFR 
80.1426 for biodiesel, renewable diesel, heating oil, naphtha, and LPG 
produced from distillers sorghum oil, via transesterification or 
hydrotreating processes.
---------------------------------------------------------------------------

    \5\ 82 FR 61205 (December 27, 2017).
---------------------------------------------------------------------------

    This preamble describes EPA's analysis of the GHG emissions 
associated with distillers sorghum oil when used to produce specified 
biofuels via particular processes. The analysis considers a scenario 
where distillers sorghum oil is recovered from distillers grains with 
solubles (DGS) at dry mill plants that produce biofuel from grain 
sorghum and where the remaining reduced-oil DGS co-product is used as 
animal feed. The distillers sorghum oil is then used as a feedstock for 
conversion into certain biofuels. As described in section III.B.8 of 
this preamble, we find that, under these circumstances, biodiesel and 
heating oil produced from distillers sorghum oil via a 
transesterification process meets the 50 percent GHG reduction 
threshold required for advanced biofuel and biomass-based diesel. We 
also find that, under these circumstances, renewable diesel, jet fuel, 
naphtha, and LPG produced from distillers sorghum oil via a 
hydrotreating process meets the 50

[[Page 37737]]

percent GHG emission reduction threshold required for advanced biofuel.
    As discussed in section IV of this preamble, EPA is also amending 
the RFS regulations to add a new definition for ``distillers corn oil'' 
that is consistent with the new definition of distillers sorghum oil. 
The definitional change for distillers corn oil was proposed in the 
November 2016 Renewable Enhancement and Growth Support proposed rule 
(the ``November 2016 REGS proposed rule'').\6\ Although that rule 
proposed to revise the definition of corn oil extraction, after 
considering the comments received, we decided it was more appropriate 
to leave the definition of corn oil extraction unchanged, and instead 
add and define the term distillers corn oil. This new term, distillers 
corn oil, will replace the existing term, non-food grade corn oil 
(which some parties have found unclear) in rows F and H of Table 1 to 
40 CFR 80.1426. The primary difference between the existing and new 
terms is that the new definition of distillers corn oil allows for the 
recovery of corn oil at additional points in the ethanol production 
process (provided certain conditions are met). Thus, although the new 
definition allows additional corn oil to be used as a feedstock in the 
relevant pathways, the same life cycle considerations apply and the 
analyses for those pathways are unaffected.\7\ The purpose and 
practical effect of this final rule, to allow corn oil extraction at 
more stages of ethanol production, closely match the notice of proposed 
rulemaking on this topic. In light of the practical similarity between 
``non-food grade corn oil'' and ``distillers corn oil'' and to avoid 
implementation difficulties from continuing to administer registrations 
with obsolete terms, fuel producers who are currently registered for 
pathways that include non-food grade corn oil as a feedstock will need 
to update their registration to include distillers corn oil feedstock 
through a company update in EPA's Central Data Exchange (CDX). After 
the effective date of this final rule, including a reasonable 
transition period to allow for adequate time for registration updates 
to be initiated and processed, the non-food grade corn oil feedstock 
code will be removed and RINs will not be able to be generated using 
that feedstock code.\8\ Fuel producers will be instructed on how and 
when to remove the non-food grade corn oil feedstock from their 
registration.
---------------------------------------------------------------------------

    \6\ 81 FR 80828 (November 16, 2016).
    \7\ See 81 FR 80828, 80900 (``[W]e believe that the precise 
timing and method of corn oil extraction is not relevant for GHG 
reductions to be accomplished pursuant to pathways F and H, provided 
that: (1) The corn is converted to ethanol; (2) The corn oil is 
extracted at a point in the dry mill ethanol production process that 
renders it unfit for food uses without further refining; and (3) The 
resulting DGS from the dry mill operation is marketable as animal 
feed.'')
    \8\ For more information on EPA's guidelines for registration 
updates see memo to the docket, ``Registration Approach for Fuel 
Producers Transitioning from Non-Food Grade Corn Oil to Distillers 
Corn Oil Feedstock,'' in Air Docket EPA-HQ-OAR-2017-0655.
---------------------------------------------------------------------------

    With no known exceptions, ethanol plants that recover grain sorghum 
oil also, and in most cases simultaneously, recover corn oil by the 
same methods. Thus, for practical implementation purposes, it is 
important to finalize the distillers corn oil definitional changes in 
this rulemaking, to provide consistency between these regulatory 
definitions. Finally, we also include in this rulemaking pathways for 
biodiesel and heating oil produced from commingled distillers sorghum 
oil and distillers corn oil via a transesterification process, and 
renewable diesel, jet fuel, and, heating oil produced from commingled 
distillers sorghum and corn oil via hydrotreating processes.

III. Analysis of GHG Emissions Associated With Production of Biofuels 
From Distillers Sorghum Oil

A. Overview of Distillers Sorghum Oil

    Sorghum is native to Africa, but was introduced to the U.S. in the 
early 17th century. Grain sorghum belongs to the species Sorghum 
bicolor (L.) Moench,\9\ which has been bred for different purposes 
including use as a grain (grain sorghum), a source of sugar (sweet 
sorghum), and animal forage (biomass sorghum). In the U.S., grain 
sorghum is commonly used as animal feed similar to feed corn, although 
in some parts of the world it is more often grown for human 
consumption. Pathways for ethanol produced from grain sorghum were 
approved in a rule published on December 17, 2012 (77 FR 74592). We 
also discussed biomass sorghum in a Federal Register Notice published 
on December 31, 2014 (79 FR 78857). In that notice, we stated that EPA 
does not consider hybrids of Sorghum bicolor and Johnsongrass (Sorghum 
halepense) to be biomass sorghum. We would also not consider such 
hybrids to be grain sorghum. Johnsongrass hybrids are explicitly 
excluded due to concerns regarding their potential to behave as an 
invasive species.
---------------------------------------------------------------------------

    \9\ See, U.S. Department of Agriculture Natural Resource 
Conservation Service, https://plants.sc.egov.usda.gov/core/profile?symbol=SOBI2, accessed July 02, 2018.
---------------------------------------------------------------------------

    Dry mill ethanol and butanol \10\ plants grind and ferment grain 
sorghum,\11\ produce ethanol or butanol from the fermented grain 
sorghum starch, and also produce a DGS co-product (made of non-
fermentable solids, solubles syrup, and sorghum oil) that is sold as a 
type of livestock feed. A portion of the oil that would otherwise 
reside in the DGS can be recovered at the biofuel plant, typically 
through mechanical extraction. Sorghum oil is recovered through methods 
identical to that of corn oil recovered from DGS, and corn and sorghum 
oil recovery can occur at the same facilities.
---------------------------------------------------------------------------

    \10\ Given that ethanol production far exceeds that of butanol, 
for the sake of brevity, this preamble often refers only to dry mill 
ethanol plants, but butanol plants are implied to be included in 
such references, unless stated otherwise.
    \11\ Grain sorghum refers to Sorghum bicolor (L.) Moench ssp. 
Bicolor, see: https://plants.usda.gov/core/profile?symbol=sobib.
---------------------------------------------------------------------------

    The recovered distillers corn and sorghum oils contain a high 
concentration of free-fatty acids, greater than ten percent by 
weight,\12\ and are unsuitable for human consumption without further 
refining. It can, however, be used without further refining as a 
biofuel feedstock or as an ingredient in animal feed. There are 
existing approved RFS fuel pathways for biofuels produced from 
distillers corn oil \13\ to qualify for advanced biofuel (D-code 5) or 
biomass-based diesel (D-code 4) RINs, depending on the production 
process used (see rows F and H of Table 1 to 40 CFR 80.1426). This 
rulemaking establishes similar pathways for the use of distillers 
sorghum oil as currently exist for the use of distillers corn oil, and 
also establishes an additional pathway in row I of Table 1 to 40 CFR 
80.1426, as discussed further below.
---------------------------------------------------------------------------

    \12\ A Moreau, Robert & B Hicks, Kevin & Johnston, David & P. 
Laun, Nathan. (2010). The Composition of Crude Corn Oil Recovered 
after Fermentation via Centrifugation from a Commercial Dry Grind 
Ethanol Process. Journal of the American Oil Chemists' Society. 87. 
10.1007/s11746-010-1568-z.
    \13\ This rulemaking replaces the term ``non-food grade corn 
oil'' in the feedstock column of rows F and H of Table 1 to 40 CFR 
80.1426 with ``distillers corn oil.'' See section VI of this 
preamble for further discussion.
---------------------------------------------------------------------------

    In previous actions, EPA has approved pathways for the production 
of ethanol from grain sorghum made through a dry mill process as 
qualifying for renewable fuel (D-code 6) RINs, and in some cases 
advanced biofuel (D-code 5) RINs, depending on process energy sources 
used during production.\14\ In December 2016, EPA also approved (with 
conditions) a facility-specific pathway for advanced butanol 
(qualifying for (D-code 5) RINs)

[[Page 37738]]

produced from grain sorghum as a feedstock.\15\
---------------------------------------------------------------------------

    \14\ Table 1 to 40 CFR 80.1426, Rows R and S.
    \15\ December 22, 2016 pathway approval for Gevo, Inc., https://www.epa.gov/renewable-fuel-standard-program/gevo-inc-approval.
---------------------------------------------------------------------------

    Currently about 30 percent of grain sorghum grown, or 120 million 
bushels a year, goes towards ethanol production.\16\ Most of this 
production occurs in Texas, Oklahoma, and Kansas.\17\ For comparison, 
in recent years over 5,200 million bushels of corn have been used for 
ethanol production annually.\18\ Distillers sorghum oil can be produced 
at these facilities and used for biofuel production or other uses. 
However, it is still a relatively niche product, and the NSP petition 
anticipates that with approval of an RFS pathway, a potential of 12 to 
21 million ethanol-equivalent gallons of biofuel would be produced from 
the distiller sorghum oil per year.
---------------------------------------------------------------------------

    \16\ Sorghum Checkoff, ``Renewables,'' http://www.sorghumcheckoff.com/market-opportunities/renewables, accessed 
09-05-2017, (EPA-HQ-OAR-2017-0655-0015).
    \17\ USDA, NASS, ``Sorghum for Grain 2016 Harvested Acres by 
County for Selected States,'' https://www.nass.usda.gov/Charts_and_Maps/graphics/AS-HA-RGBChor.pdf, (EPA-HQ-OAR-2017-0655-
0019).
    \18\ USDA, ERS, ``Table 5--Corn supply, disappearance, and share 
of total corn used for ethanol,'' U.S. Bioenergy Statistics, https://www.ers.usda.gov/data-products/us-bioenergy-statistics/us-bioenergy-statistics/#Feedstocks, accessed 09-05-2017, (EPA-HQ-OAR-
2017-0655-0021).
---------------------------------------------------------------------------

    To the extent that distillers sorghum oil is used as a biofuel 
feedstock, it will often be produced together with distillers corn oil 
at ethanol plants using a combination of grain sorghum and corn as 
feedstocks for ethanol production. The commingled distiller sorghum and 
corn oils will then be shipped as a mixture to a different biofuel 
production facility for use as a feedstock.\19\ Due to the recovery 
process of the oils from the DGS, where the ethanol plant is using a 
feedstock that combines grain sorghum and corn, it is not possible to 
physically separate the distillers sorghum and corn oils into two 
streams, nor is it possible to account for the volume of sorghum oil or 
corn oil in this mixture. Due to this specific recovery process and 
inability to separate or allocate volume associated with each oil in 
the mixture, we are allowing the mixture of distiller sorghum and corn 
oil to be reported together as one volume. For example, the RFS 
regulations at 40 CFR 80.1451(b)(ii)(K) require renewable fuel 
producers to submit RIN generation reports that include the ``types and 
quantities of feedstocks used'' for each batch of renewable fuel 
produced or imported. The regulations do not specify a method for fuel 
producers to use in determining the quantity of each feedstock when the 
feedstocks are received as a commingled shipment, as would likely be 
the case for distillers corn oil and distillers sorghum oil. A number 
of commenters recommended that EPA clarify the treatment of mixed 
distillers corn and sorghum oil in the final rule. Based on these 
comments, we believe it is appropriate to clarify the treatment of 
commingled distillers corn and sorghum oils in this rule. Given our 
expectation that a large share of distillers sorghum oil will be mixed 
with distillers corn oil when it is recovered, from a practical 
standpoint, approving a distillers sorghum oil pathway without clearly 
allowing for the use of commingled shipments would unnecessarily 
constrain the use of these potential feedstocks. Further, we 
acknowledge that it is not practical to require parties to separate the 
oils from this mixture and report the distillers sorghum and corn oils 
as individual feedstocks. Taking these factors into consideration and 
for ease of implementation, we are adding ``Commingled distillers corn 
and sorghum oils'' as a feedstock to rows F and H of Table 1 to 40 CFR 
80.1426. Thus, facilities producing fuel through these pathways can 
treat commingled distillers corn oil and distillers sorghum oil as a 
single feedstock and report the combined volume of these oils in RIN 
generation reports under 40 CFR 80.1451(b)(ii)(K). They may also 
generate RINs in accordance with the formula in 40 CFR 80.1426(f)(2) 
for renewable fuel that can be described by a single pathway.
---------------------------------------------------------------------------

    \19\ See comment from the Renewable Fuels Association (EPA-HQ-
OAR-2017-0655-0039) and NSP petition, (EPA-HQ-OAR-2017-0655-0005), 
pp. 8.
---------------------------------------------------------------------------

    At this time, EPA is not adding ``commingled distillers corn and 
sorghum oil'' as a feedstock to row I of Table 1 to 40 CFR 80.1426 for 
the production of naphtha and LPG via a hydrotreating process. Non-food 
grade corn oil is not currently listed in that row, nor has EPA 
proposed to add it (or distillers corn oil). Thus, it would be 
premature for EPA to add either distillers corn oil or commingled 
distillers corn and sorghum oil as feedstocks in row I. Through the 
fuel pathway petition process, EPA previously approved two petitions 
allowing the generation of advanced biofuel (D-code 5) RINs for naphtha 
and LPG produced from non-food grade corn oil via a hydrotreating 
process.\20\ We intend to inform companies with existing facility-
specific pathway approvals for non-food grade corn oil, granted through 
the 40 CFR 80.1416 petition process, that such pathway approvals will 
be interpreted by EPA as approvals for distillers corn oil. (This gives 
such producers the same treatment as producers who registered for non-
food grade corn oil feedstock without first being approved for a 
facility-specific petition.) In order to generate (D-code 5) RINs for 
naphtha and/or LPG produced from distillers corn oil and/or commingled 
distillers corn and sorghum oil, a fuel producer would first need to 
petition EPA pursuant to 40 CFR 80.1416, have EPA review and approve 
their requested pathway, and then submit and have EPA accept the 
registration for the new pathway.
---------------------------------------------------------------------------

    \20\ Renewable Energy Group's facility in Geismar, LA (https://www.epa.gov/renewable-fuel-standard-program/reg-geismar-approval-0) 
and Diamond Green Diesel's facility in Norco, LA (https://www.epa.gov/renewable-fuel-standard-program/diamond-green-diesel-llc-approval).
---------------------------------------------------------------------------

    EPA sought comment in the December 2017 sorghum oil proposed rule 
on a proposed definition for distillers sorghum oil. We summarize 
comments received below, with a more detailed summary and analysis 
included in the docket for this rulemaking. EPA received one comment on 
the proposed definition, asking that EPA clarify the phrase ``rendered 
unfit for food uses'' to specify that this means human food uses and 
not animal food uses. In this comment EPA was also asked to finalize 
revisions to the definition of corn oil extraction that was proposed in 
the November 2016 REGS proposed rule. The requested clarification is 
consistent with EPA's intended meaning, and we are finalizing a 
definition that says, ``the oil is unfit for human food use without 
further refining.'' We are also removing the word ``rendered'' from 
this part of the definition, as it is unnecessary and seemed to raise 
questions for commenters without any clear benefit.
    EPA received a number of comments on the November 2016 REGS 
proposed rule related to the proposed changes to the definition of corn 
oil extraction contained in that proposed rule. Based on these 
comments, we have made a number of changes to the proposed definition 
of distillers sorghum oil to ensure that it aligns with the definition 
of distillers corn oil. These comments and associated changes are 
discussed in section IV, and in more detail in a response to comment 
document in the docket for this rulemaking.
    As part of this rule, we are adding a definition of distillers 
sorghum oil in 40 CFR 80.1401. So long as the criteria in the 
definition are met, a variety of recovery methods could be

[[Page 37739]]

implemented. For example, this would include recovery of sorghum oil 
before fermentation from the slurry or from liquefaction tanks. It 
would also include recovery of sorghum oil after fermentation from the 
thin stillage and/or DGS. Further, it would also include recovery of 
sorghum oil by a third-party, and/or at a separate location from the 
biofuel plant. The definition of distillers sorghum oil is consistent 
with the definition of distillers corn oil, which is also being 
finalized in this rule (see section IV of this preamble).

B. Analysis of Lifecycle GHG Emissions

    EPA evaluated the GHG emissions associated with using distillers 
sorghum oil as a biofuel feedstock based on information provided by the 
petitioner, input from the U.S. Department of Agriculture (USDA), 
public comments, and other available data sources. GHG emissions 
include emissions from production and transport of grain sorghum, the 
production and transport of distillers sorghum oil; the processing of 
the oil into biofuel; transport of the biofuel from the production 
facility to the fuel-blender; and, ultimately the use of the biofuel by 
the end consumer.
    EPA's lifecycle analyses include significant direct and indirect 
GHG emissions (including such emissions from land use changes) 
associated with producing a feedstock and transporting it to the 
processing facility. All of the emissions associated with growing, 
harvesting, and transporting grain sorghum as a biofuel feedstock were 
calculated and taken into account in EPA's evaluation of the lifecycle 
GHG emissions associated with grain sorghum ethanol and butanol.\21\
---------------------------------------------------------------------------

    \21\ See the December 17, 2012 grain sorghum ethanol final rule 
(77 FR 74592).
---------------------------------------------------------------------------

    In the proposed rule we described our preliminary finding that 
biofuels produced from distillers sorghum oil reduce lifecycle GHG 
emissions by approximately 80 percent compared to the petroleum 
baseline. These results assumed zero indirect GHG emissions related to 
compensating for oil removal from DGS, based on the premise that 
certain types of livestock benefit from lower-fat DGS and therefore 
removing the sorghum oil would not result in significant indirect 
impacts. EPA received two comments arguing that extracting distillers 
sorghum oil from DGS reduces the mass, calorific, and fat content of 
the DGS, and that there would be significant indirect GHG emissions 
associated with replacing these losses with other sources of livestock 
feed. As discussed below, we have adjusted our analysis based on these 
comments and conducted further analysis to estimate the potential 
indirect GHG emissions associated with replacing the extracted 
distillers sorghum oil. After accounting for these emissions, based on 
available information and reasonable assumptions to account for 
uncertainties, our revised analysis continues to show that biofuels 
produced from distillers sorghum oil satisfy the 50 percent lifecycle 
GHG reduction threshold required to qualify as advanced biofuel or 
biomass-based diesel. Finally, some commenters on the proposed 
distillers sorghum oil rule suggested that EPA has an obligation to 
engage in consultation with the United States Fish and Wildlife Service 
and/or that National Marine Fisheries Service under Section 7 of the 
Endangered Species Act prior to finalizing the rule. Such consultation 
is required for actions in which the Agency has discretion to tailor 
its actions for the benefit of threatened or endangered species, or 
their critical habitat, and where the action in question ``may effect'' 
listed species. However, as described in the Response to Comments 
Document accompanying this rule, EPA does not have discretion under the 
statute to take into consideration possible impacts to threatened or 
endangered species or their critical habitat in determining which 
biofuels qualify under the renewable fuel standard program as advanced 
biofuel or biomass-based diesel and, even if it did have such 
discretion, today's rule will have no effect on threatened or 
endangered species. As a result, Section 7 consultation is not 
required.
1. Livestock Sector Impacts
    During a typical dry mill fermentation process, DGS are produced. 
These DGS are then used as animal feed, thereby displacing feed crops 
and the GHG emissions associated with growing and transporting those 
feed crops. After distillers sorghum oil is removed, DGS continue to be 
produced and sold as livestock feed, but with reduced oil content.
    We do not expect sorghum oil removal to have significant impact on 
the types and quantities of feed used in the livestock market. EPA's 
modeling for the December 2012 grain sorghum ethanol final rule assumed 
average dried DGS yield of 17 pounds per bushel of grain sorghum 
feedstock.\22\ The oil content of full oil DGS is approximately 1.71 
pounds per bushel,\23\ of which approximately 0.67-0.88 pounds per 
bushel of grain sorghum feedstock can be recovered using commercially 
available mechanical extraction technologies.\24\ When oil is recovered 
from the DGS, the total mass of DGS produced could be reduced by up to 
approximately 6 percent. However, DGS from grain sorghum represents 
less than 3 percent of DGS fed to domestic livestock.\25\ Even if all 
distillers sorghum oil were removed from livestock feed, the overall 
impact on the livestock sector would be extremely small. To the extent 
that sorghum DGS are likely to be fed in combination with corn DGS and 
other livestock feed ingredients, the changes in oil content on the 
combined feed could potentially be too small to discern.\26\ In that 
case, it is unlikely that feedstock suppliers would find a need to 
replace the distillers sorghum oil with other oils. As mentioned 
previously, EPA has an existing pathway approved for non-food grade 
corn oil, now referred to as distillers corn oil. Much of the current 
corn DGS on the feed market is already de-oiled, and because all known 
current facilities using sorghum blend with corn DGS, we do not expect 
any significant changes in oil concentrations from what already exists 
on the market. However, based on the comments received, we have 
conducted additional analysis on the potential indirect GHG emissions 
impacts on a per pound of oil extracted basis.
---------------------------------------------------------------------------

    \22\ See 77 FR 74592 (December 17, 2012).
    \23\ NSP petition (EPA-HQ-OAR-2017-0655-0005), Attachment 4, pp. 
7.
    \24\ 0.88 pounds removal is at the highest end of the 
information NSP provided and corresponds to a fat content in 
reduced-oil distillers grains of 3.91% rather than 7.2% which NSP 
considers as a more likely outcome.
    \25\ NSP petition (EPA-HQ-OAR-2017-0655-0005), pp. 19. And, 
AgMRC, ``Estimated U.S. Dried Distillers Grains with Solubles (DDGS) 
Production & Use,'' https://www.extension.iastate.edu/agdm/crops/outlook/dgsbalancesheet.pdf, (EPA-HQ-OAR-2017-0655-0006).
    \26\ See Air Docket EPA-HQ-OAR-2017-0655, U.S. Department of 
Agriculture, Office of the Chief Scientist and Office of the Chief 
Economist, ``Memorandum: Technical responses on EPA assumptions 
related to the lifecycle GHG assessment of the proposed grain oil 
sorghum biofuel pathway,'' March 15, 2018, pp. 4.
---------------------------------------------------------------------------

    Chemically, full-oil and reduced-oil sorghum DGS share similar 
compositions; they are primarily made up of crude protein, fat, and 
natural and acid detergent fibers.\27\ Where the two products differ 
most significantly is in their acid detergent fiber and fat 
concentrations.
---------------------------------------------------------------------------

    \27\ Neutral detergent fibers measure the amount of structural 
component of plants, while acid detergent fibers measure the least 
digestible plant components.

---------------------------------------------------------------------------

[[Page 37740]]

    Table III.1 shows the key constituents that make up dried full-oil 
and reduced-oil DGS.
---------------------------------------------------------------------------

    \28\ The chart lists the most prominent constituents in 
distillers grains. Data provided by the National Sorghum Producers, 
see Air docket EPA-HQ-OAR-2017-0655. Data for full-oil sorghum DDGS 
is sourced from Nutrient Requirements of Swine, 2012 National 
Academies Press, Washington, DC, pp 329. Data for reduced-oil 
Sorghum DDGS was calculated by National Sorghum Producers using the 
ratio of (1) corn DDGS, between 6 to 9 percent Oil; and (2) corn 
DDGS, less than 4 percent oil from Nutrient Requirements of Swine, 
2012 National Academies Press, Washington, DC, pp. 266 and 267.

   Table III.1--Key Nutrient Make-Up of Full-Oil and Reduced-Oil Dried
 Distillers Grains With Solubles (DDGS) Derived From Grain Sorghum \28\
------------------------------------------------------------------------
                                                   Full-oil  Reduced-oil
                    Nutrient                       sorghum     sorghum
                                                     DDGS        DDGS
------------------------------------------------------------------------
Crude Protein, %................................      30.80        31.36
Crude Fat, % (aka Ether Extract)................       9.75         3.91
Neutral Detergent Fiber (NDF), %................      33.60        37.23
Acid Detergent Fiber (ADF), %...................      22.68        31.91
Ash, %..........................................       6.62         7.60
Calcium, %......................................       0.12         0.08
Phosphorus, %...................................       0.76         0.96
Lysine, %.......................................       0.82         0.62
Methionine, %...................................       0.54         0.47
Cystine, %......................................       0.53         0.61
Tryptophan, %...................................       0.25         0.23
------------------------------------------------------------------------

    EPA received two comments \29\ regarding the potential greenhouse 
gas impacts on the livestock sector if the distillers oil is removed. 
One potential impact is based on whether a lower crude fat 
concentration would require changes in the livestock feed composition 
to make up for the nutritional loss to the livestock (nutritional 
impacts). The second potential impact is related to the physical 
reduction in DGS mass resulting from the oil recovery (mass loss). We 
address both of these potential impacts in the following sections.
---------------------------------------------------------------------------

    \29\ EPA-HQ-OAR-2017-0655-0041, 0042.
---------------------------------------------------------------------------

a. Nutritional Impacts
    The key issue associated with the first potential impact is whether 
the reduced calories would impact the amount of feed displaced through 
the use of sorghum DGS. Should fat content not be at sufficient levels, 
livestock producers might need to add nutrients or other types of feed 
to meet appropriate nutritional targets. This is reflected in the 
``displacement rate'' of a DGS, which indicates how much weight a pound 
of distillers grain can replace of another feed. A lower feed 
displacement rate for a reduced-oil distillers grain as compared to a 
full-oil distillers grain could result in additional GHG emissions as 
it suggests that additional feed is required to replace the missing 
oil. Displacement rates are calculated by taking into account nutrient 
and energy requirements of livestock and their respective recommended 
DGS inclusion rates to maintain animal performance.\30\ The next 
section (III.B.1.b. Mass Loss), describes how we used the displacement 
rate to analyze the emissions impacts associated with the removal of 
oil from sorghum DGS.
---------------------------------------------------------------------------

    \30\ For more detail see, Arora et al., (2008). Argonne National 
Laboratory. ``Update of distillers grains displacement ratios for 
corn ethanol life[hyphen]cycle analysis'' (EPA-HQ-OAR-2017-0655-
0007).
---------------------------------------------------------------------------

    Research suggests that for several livestock types there are 
performance improvements, per pound of DGS, when oil content of fed-DGS 
is removed. For instance, for poultry and swine, ``increased 
concentrations of free fatty acids have a negative impact on lipid 
digestion and energy content.'' \31\ Free fatty acids are a class of 
acids that form part of a lipid molecule. Full-oil DGS typically 
contain higher levels of free fatty acids and thus may have a negative 
impact on the fat digestion of poultry and swine. Thus, while the fat 
content may be lower for reduced-oil DGS, per pound feeding values of 
this product may not be lower than full-oil DGS for poultry and swine 
and the feed displacement rate may not be lower for reduced-oil versus 
full-oil DGS.
---------------------------------------------------------------------------

    \31\ Kerr, B.J., W.A. Dozier, and G.C. Shurson. (2016). ``Lipid 
digestibility and energy content of distillers' corn oil in swine 
and poultry,'' Journal of Animal Science. 94:2900-2908. doi:10.2527/
jas.2016-0440, pp. 2905 (EPA-HQ-OAR-2017-0655-0010).
---------------------------------------------------------------------------

    For dairy, there are also benefits from feeding reduced-oil DGS as 
compared to full-oil DGS. Research on dairy cows shows that reduced-oil 
DGS produce a lessened likelihood of the onset of milk fat 
depression.\32\ Milk fat depression occurs when milk fat is reduced by 
0.2 percent or more.\33\ If milk fat depression occurs over the long 
term, a decline in overall milk production may occur as well as 
worsened health conditions of the herd. High fat diets have been linked 
with this condition and have been shown to worsen the rumen environment 
of dairy cattle.\34\ Therefore, dairy producers seek to avoid high fat 
diets. Given the benefits of reduced-oil DGS over full-oil DGS for milk 
fat production, it is expected that reduced-oil DGS will be preferred 
over full-oil DGS by dairy producers and that feed displacement rates 
will be no lower than those of full-oil DGS.
---------------------------------------------------------------------------

    \32\ H.A. Ramirez-Ramirez, E. Castillo Lopez, C.J.R. Jenkins, 
N.D. Aluthge, C. Anderson, S.C. Fernando, K.J. Harvatine, P.J. 
Kononoff, (2016). ``Reduced-fat dried distillers grains with 
solubles reduces the risk for milk fat depression and supports milk 
production and ruminal fermentation in dairy cows,'' Journal of 
Dairy Science, Volume 99, Issue 3, Pages 1912-1928, ISSN 0022-0302, 
http://dx.doi.org/10.3168/jds.2015-9712. (http://www.sciencedirect.com/science/article/pii/S0022030216000515), (EPA-
HQ-OAR-2017-0655-0014).
    \33\ University of Kentucky, ``Preventing Milk Fat Depression in 
Dairy Cows,'' https://afs.ca.uky.edu/dairy/preventing-milk-fat-depression-dairy-cows. Accessed September 08, 2018, (EPA-HQ-OAR-
2017-0655-0017). On the herd level milk fats range from 3 to 5 
percent normally. Oetzel, Garret R., ``Subacute Ruminal Acidosis in 
Dairy Herds: Physiology, Pathophysiology, Milk Fat Responses, and 
Nutritional Management.'' Preconference Seminar 7A: Dairy Herd 
Problem Investigation Strategies: Lameness, Cow Comfort, and Ruminal 
Acidosis, American Association of Bovine Practitioners, 40th Annual 
Conference, September 17, 2007--Vancouver, BC, Canada, https://www.vetmed.wisc.edu/dms/fapm/fapmtools/2nutr/sara1aabp.pdf pp.98. 
(EPA-HQ-OAR-2017-0655-0012).
    \34\ Penn State Extension, ``Troubleshooting Problems with 
Milkfat Depression,'' August 14, 2017, https://extension.psu.edu/troubleshooting-problems-with-milkfat-depression. Accessed September 
08, 2017, (EPA-HQ-OAR-2017-0655-0016).
---------------------------------------------------------------------------

    An impact on displacement rates may occur when reduced-oil instead 
of full-oil DGS are used for beef cattle, which require additional fat. 
Table III.2 shows the displacement ratios for the livestock sectors 
where dried DGS (DDGS) are used. In this table, for instance, 1 pound 
of reduced-oil DDGS fed to beef cattle displaces 1.173 pounds of corn, 
as opposed to 1.196 pounds of corn for full-oil DDGS. A pound of full-
oil and reduced-oil DDGS also displaces equal amounts (0.056 pounds) of 
urea. Urea is a non-protein nitrogen compound that is typically fed to 
cattle for aiding the production of protein by rumen microbes.\35\ 
These values show that for dairy, swine, and poultry, reduced-oil DDGS 
replace the same amounts of alternative feed despite containing less 
oil than full-oil DDGS. This is not the case, however, with respect to 
beef cattle.
---------------------------------------------------------------------------

    \35\ Penn State Extension, ``Urea in Beef Cattle Rations,'' 
August 08, 2017, https://extension.psu.edu/urea-in-beef-cattle-rations. Accessed October 18, 2017, (EPA-HQ-OAR-2017-0655-0018).

[[Page 37741]]



                                             Table III.2--Full-Oil and Reduced-Oil Sorghum Distillers Grains With Solubles Displacement Ratios \36\
                                                       [lb of ingredient/lb of sorghum distillers grains with solubles, dry matter basis]
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                            Beef cattle                    Dairy cattle                        Swine                       Poultry \37\
                           Ingredient                            -------------------------------------------------------------------------------------------------------------------------------
                                                                     Full-oil       Reduced-oil      Full-oil       Reduced-oil      Full-oil       Reduced-oil      Full-oil       Reduced-oil
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Corn............................................................           1.196           1.173           0.731           0.731           0.890           0.890           0.292           0.292
Soybean Meal....................................................  ..............  ..............           0.633           0.633           0.095           0.095  ..............  ..............
Urea............................................................           0.056           0.056  ..............  ..............  ..............  ..............  ..............  ..............
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

b. Mass Loss
    The second issue raised by the commenters on potential livestock 
indirect GHG impacts \38\ relates to the potential impacts of mass 
reduction from the removal of oil from sorghum DGS. The commenters also 
suggested that EPA consider the impacts of feeding reduced-oil sorghum 
DGS to all types of livestock rather than those where performance gains 
were likely to be seen. In evaluating these comments, EPA has 
undertaken additional analysis to account for the potential indirect 
GHG emissions associated with this ``mass loss'' effect. Since sorghum 
accounts for less than 3 percent of the domestically consumed 
distillers grains, there is very little market data on the impacts of 
removing oil from the sorghum DGS on the livestock sector. EPA, 
therefore, has relied on the expertise of USDA to inform the livestock 
sector impact analysis described below.\39\
---------------------------------------------------------------------------

    \36\ Information provided by National Sorghum Producers, see Air 
docket EPA-HQ-OAR-2017-0655, using the following sources Arora et 
al., (2008). Argonne National Laboratory. ``Update of distillers 
grains displacement ratios for corn ethanol life[hyphen]cycle 
analysis,'' (EPA-HQ-OAR-2017-0655-0007); Kerr et al., (2016). 
``Lipid digestibility and energy content of distillers' corn oil in 
swine and poultry,'' Journal of Animal Science 94:2900-8, (EPA-HQ-
OAR-2017-0655-0010); Opheim et al., (2016). ``Biofuel feedstock and 
blended coproducts compared with deoiled corn distillers grains in 
feedlot diets: Effects on cattle growth performance, apparent total 
tract nutrient digestibility, and carcass characteristics,'' Journal 
of Animal Science 94:227, (EPA-HQ-OAR-2017-0655-0013); Ramirez et 
al., (2016). ``Reduced-fat dried distillers grains with solubles 
reduces the risk for milk fat depression and supports milk 
production and ruminal fermentation in dairy cows,'' Journal of 
Dairy Science 99:1912-28, (EPA-HQ-OAR-2017-0655-0014). Poultry 
displacement ratios were provided by the National Sorghum Producers 
and calculated based on data from the Iowa State Extension Services, 
Agricultural Marketing and Resources Center, ``Estimated U.S. Dried 
Distillers Grains with Solubles (DDGS) Production and Use,'' https://www.extension.iastate.edu/agdm/crops/outlook/dgsbalancesheet.pdf 
(EPA-HQ-OAR-2017-0655-0006).
    \37\ Protein sources such as soybean meal can be used to 
supplement sorghum DGS for poultry.
    \38\ EPA-HQ-OAR-2017-0655-0041, 0042.
    \39\ See, U.S. Department of Agriculture, Office of the Chief 
Scientist and Office of the Chief Economist, ``Memorandum: Technical 
responses on EPA assumptions related to the lifecycle GHG assessment 
of the proposed grain oil sorghum biofuel pathway,'' March 15, 2018, 
Air Docket EPA-HQ-OAR-2017-0655.
---------------------------------------------------------------------------

    When oil is removed from the sorghum DGS, the distillers grains 
decrease in mass. Although feed rations are complex, for the purposes 
of conducting this analysis, in USDA's judgement it is a reasonable 
assumption to use corn to substitute for the mass loss due to sorghum 
oil recovery. Corn is a relatively low cost primary product that is 
readily available in the locations where sorghum oil is produced.\40\ 
Furthermore, USDA experts noted that to the extent that other materials 
such as crop residues or waste from the human food supply system were 
available and used instead, they would likely have a lower GHG profile 
than corn.\41\ To the extent that these other materials may be used, 
assuming corn substitutes for mass loss is a conservative assumption 
for a GHG emissions perspective.\42\
---------------------------------------------------------------------------

    \40\ Corn is demonstrably cheaper than other feedstock 
replacements. For instance, in the U.S. corn in the 2016/2017 season 
averaged $0.06/lb whereas, soy oil in 2017 averaged $0.32/lb and 
corn oil averaged $0.28. See USDA ERS, Feed Grains Yearbook, https://www.ers.usda.gov/data-products/feed-grains-database/feed-grains-yearbook-tables.aspx (accessed on June 14, 2018) and USDA Vegetable 
Oils and Animal Fats, Oil Crop Yearbook, https://www.ers.usda.gov/data-products/oil-crops-yearbook.aspx (accessed on June 06, 2018).
    \41\ See, U.S. Department of Agriculture, Office of the Chief 
Scientist and Office of the Chief Economist, ``Memorandum: Technical 
responses on EPA assumptions related to the lifecycle GHG assessment 
of the proposed grain oil sorghum biofuel pathway,'' March 15, 2018, 
Air Docket EPA-HQ-OAR-2017-0655.
    \42\ The purpose of lifecycle assessment under the RFS program 
is not to precisely estimate lifecycle GHG emissions associated with 
particular biofuels, but instead to determine whether or not the 
fuels satisfy specified lifecycle GHG emissions thresholds to 
qualify as one or more of the four types of renewable fuel specified 
in the statute. Where there are a range of possible outcomes and the 
fuel satisfies the GHG reduction requirements when ``conservative'' 
assumptions are used, then a more precise quantification of the 
matter is not required for purposes of a pathway determination.
---------------------------------------------------------------------------

    To calculate the impact of the mass loss and the greenhouse gas 
emission impacts from the substitution of corn for sorghum DGS, EPA 
used data obtained from a study conducted by Argonne National 
Laboratory and estimates from NSP for the displacement of feed by DGS 
by livestock type (see Table III.2). Using these data, we calculated a 
substitution rate for how much corn would be needed for every pound of 
grain sorghum oil diverted to biofuel production, by livestock type 
(see Table III.3 below).\43\
---------------------------------------------------------------------------

    \43\ See, Summary for the Final Rule of Key Assumptions for 
EPA's Analysis of the Lifecycle Greenhouse Gas Emissions Associated 
with Biofuels Produced from Distillers Sorghum Oil and Distiller 
Sorghum Oil LCA Spreadsheet, Air Docket EPA-HQ-OAR-2017-0655.

                  Table III.3--Feed Substitution Ratio
------------------------------------------------------------------------
                                                            Substitution
                                                              ratio (lb
                                                                feed
          Livestock type                Feed substitute      substitute/
                                                               lb oil
                                                             extracted)
------------------------------------------------------------------------
Beef..............................  Corn..................         1.551
Dairy.............................  Corn..................         0.731
Swine.............................  Corn..................         0.890
Poultry...........................  Corn..................         0.292
------------------------------------------------------------------------

    Using the national average shares for DDGS use by livestock 
type,\44\ we calculated a weighted average 1.2 pounds of corn 
substituted per pound of distillers sorghum oil removed. Based on our 
modeling for the March 2010 RFS rule, we have used an emissions factor 
of 0.27 kgCO<INF>2</INF>e per pound of corn produced, transported and 
consumed.\45\ The product of these values gives a livestock sector 
impact of 0.31 kgCO<INF>2</INF>e per pound of distillers sorghum oil, 
which represents the potential indirect emissions resulting from 
additional corn produced to substitute for a loss in sorghum DGS on a 
per pound of oil extracted basis. The product of this value and the 
yield for each type of biofuel (pounds of distillers sorghum oil per 
mmBtu of fuel) results in the livestock sector GHG impacts listed in 
the results table in section III.B.8 of this preamble.
---------------------------------------------------------------------------

    \44\ The data comes from the medium projections for the year 
2016-2017 from AgMRC, ``Estimated U.S. Dried Distillers Grains with 
Solubles (DDGS) Production & Use,'' https://www.extension.iastate.edu/agdm/crops/outlook/dgsbalancesheet.pdf, 
(EPA-HQ-OAR-2017-0655-0006).
    \45\ See the docket memo ``Summary for the Final Rule of Key 
Assumptions for EPA's Analysis of the Lifecycle Greenhouse Gas 
Emissions Associated with Biofuels Produced from Distillers Sorghum 
Oil,'' Air Docket EPA-HQ-OAR-2017-0655, for more details.

---------------------------------------------------------------------------

[[Page 37742]]

2. Feedstock Production
    Distillers sorghum oil is removed from DGS at dry mill biofuel 
plants using the same equipment and technologies used for distillers 
corn oil recovery. Oil recovery requires thermal energy to heat the DGS 
and electricity to power centrifuges, pumps and other oil recovery 
equipment. Our analysis for the March 2010 RFS final rule,\46\ the NSP 
petition, and two studies,\47\ \48\ indicate that although extracting 
oil from DGS uses thermal energy, it also leads to relatively less 
thermal energy being used later in the process to dry the DGS, 
resulting in an overall negligible change in thermal energy 
requirements for plants that dry their DGS. Our analysis here includes 
both the thermal and electrical energy requirements to remove the 
distillers sorghum oil. We do not account for the reduction in thermal 
energy needed for DGS drying mentioned above, so this can be viewed as 
a conservative approach (i.e., resulting in higher estimated GHG 
emissions) for plants that dry their DGS. Based on our review of the 
data,\49\ we assume 200 Btu (British thermal units) of grid electricity 
and 800 Btu of natural gas are used to recover distillers sorghum oil 
from DGS, per pound of distillers sorghum oil recovered. These 
parameters are based on energy requirements associated with extracting 
oil from DGS at dry mill ethanol plants, but we believe they are also 
appropriate and conservative in cases where the oil is recovered at any 
point downstream from sorghum grinding.\50\
---------------------------------------------------------------------------

    \46\ See section 1.4.1.3 of USEPA (2010). Renewable fuel 
standard program (RFS2) regulatory impact analysis. U.S. 
Environmental Protection Agency Office of Transportation Air 
Quality, EPA-420-R-10-006. Washington, DC. https://www.epa.gov/sites/production/files/2015-08/documents/420r10006.pdf.
    \47\ Wang, Z., et al. (2015). ``Influence of corn oil recovery 
on life-cycle greenhouse gas emissions of corn ethanol and corn oil 
biodiesel.'' Biotechnology for Biofuels 8(1): 178, (EPA-HQ-OAR-2017-
0655-0020).
    \48\ Mueller, S., Kwik, J. (2013). ``2012 Corn Ethanol: Emerging 
Plant Energy and Environmental Technologies.''
    \49\ See sources referenced in footnotes 20 and 21 for energy 
use associated with oil extraction, and California Air Resources 
Board (2014), (EPA-HQ-OAR-2017-0655-0011). ``California-Modified 
GREET Fuel Pathway: Biodiesel Produced in the Midwestern and the 
Western U.S. from Corn Oil Extracted at Dry Mill Ethanol Plants that 
Produce Wet Distiller's Grains with Solubles.'' Staff Summary, 
Method 1 Fuel Pathway (EPA-HQ-OAR-2017-0655-0009).
    \50\ There are limited data on the energy efficiency of 
alternative oil extraction technologies. Oil extraction earlier in 
the dry mill process would offer energy efficiency benefits later in 
the process, as moving oil through the fermentation and ethanol 
recovery processes tends to increase energy requirements. Recovery 
further downstream at a separate location would likely include 
chemical extraction techniques that would yield higher levels of 
oil. Overall, we expect any differences to be small in the context 
of this distillers sorghum oil analysis.
---------------------------------------------------------------------------

3. Feedstock Transport
    In our analysis, distillers sorghum oil is transported 50 miles by 
heavy duty truck from the dry mill ethanol plant to the biodiesel or 
hydrotreating facility where it is converted to transportation fuel. 
GHG emissions associated with feedstock transport are relatively small, 
and modest changes in transport distance would not affect the threshold 
determinations based on our analysis.
4. Feedstock Pretreatment
    For emissions from feedstock pretreatment and fuel production, we 
perform two analyses. In the first analysis, we calculate the emissions 
from biodiesel and heating oil produced using transesterification. In 
the second analysis, we calculate the emissions from renewable diesel, 
jet fuel, LPG, and naphtha, produced using hydrotreating.
    Before distillers sorghum oil is converted to biodiesel via 
transesterification, it is processed to remove free-fatty acids. This 
process requires thermal energy. Our evaluation of yellow grease for 
the March 2010 RFS final rule included 14,532 Btu of natural gas per 
gallon of biodiesel produced for pretreatment, and we have applied the 
same assumption for this analysis. According to the NSP petition, 
distillers sorghum oil has free fatty acid content near or below 15 
percent, which is in the range of yellow grease free fatty acid 
contents (<15 percent).\51\ Our assumption on pretreatment thermal 
energy use for distillers sorghum oil is higher than thermal energy use 
in other (non-EPA) lifecycle assessments of high free-fatty acid 
biodiesel feedstocks that we have reviewed,\52\ and can be viewed as a 
conservative assumption (i.e., resulting in higher GHG emissions).
---------------------------------------------------------------------------

    \51\ See Table 15 in the January 5, 2012 Pathways I direct final 
rule (77 FR 722).
    \52\ See for example: California Environmental Protection Agency 
Air Resources board, https://www.arb.ca.gov/fuels/lcfs/2a2b/apps/co_bd_wdgs-rpt-102414.pdf, (EPA-HQ-OAR-2017-0655-0008).
---------------------------------------------------------------------------

    Pretreatment to remove free-fatty acids is not required when 
distillers sorghum oil is used to produce renewable diesel, jet fuel, 
LPG and naphtha through a hydrotreating process.
5. Fuel Production
    For biodiesel production, we used the transesterification analysis 
for the March 2010 RFS rule for yellow grease biodiesel.\53\ Based on 
comparison of this yellow grease analysis and the mass and energy 
balance data in the NSP petition, submitted under claim of CBI, the 
conversion of yellow grease and distillers sorghum oil are expected to 
require similar energy inputs and yield similar amounts of biodiesel as 
output.
---------------------------------------------------------------------------

    \53\ For details see section 2.4 of the RIA for the March 2010 
RFS final rule.
---------------------------------------------------------------------------

    For production of renewable diesel, jet fuel, naphtha and LPG via a 
hydrotreating process, we used the same data and approach as used in 
the March 2013 Pathways I rule,\54\ and subsequent facility-specific 
petitions involving hydrotreating processes.\55\ The March 2013 
Pathways I rule evaluated two hydrotreating configurations: One 
optimized for renewable diesel production and one optimized for jet 
fuel production. For this analysis we evaluated a hydrotreating process 
maximized for renewable diesel production, as that is the most common 
configuration. The jet fuel configuration results in higher emissions 
(approximately 5 kgCO<INF>2</INF>e/mmBtu higher), but the threshold GHG 
reduction results discussed below are not sensitive to this assumption.
---------------------------------------------------------------------------

    \54\ See 78 FR 14190 (March 5, 2013).
    \55\ For determination documents responding to facility specific 
petitions, see: https://www.epa.gov/renewable-fuelstandard-program/approved-pathways-renewable-fuel.
---------------------------------------------------------------------------

    Our previous analyses of hydrotreating processes have applied an 
energy allocation approach for RIN-generating co-products that qualify 
as renewable fuel.\56\ This approach results in higher lifecycle GHG 
emissions for each of the fuel products than other approaches 
considered, such as a displacement approach, and thus can be viewed as 
a conservative approach. We have used this approach in assessing GHG 
emissions impacts of fuels derived from distillers sorghum oil.
---------------------------------------------------------------------------

    \56\ See the March 2013 Pathways I rule, specifically 78 FR 
14198-14200 (March 5, 2013).
---------------------------------------------------------------------------

    In the allocation approach, all the emissions from the 
hydrotreating process are allocated across all co-products. There are a 
number of ways to do the allocation, for example on the basis of 
energy, mass, or economic value. Consistent with the approach taken in 
the hydrotreating analysis for the March 2013 RFS rule, for this 
analysis of fuels produced from distillers sorghum oil feedstock 
through a hydrotreating process, we allocated emissions to the 
renewable diesel, naphtha and LPG based on the energy content (using 
lower-heating values) of the products produced. Emissions from the 
process were allocated equally to all of the Btus of fuel produced. 
Therefore, on a per Btu basis, all of the primary products coming from 
the hydrotreating facility have the same emissions from the fuel 
production stage of the

[[Page 37743]]

lifecycle. For this analysis, the energy content was the most 
appropriate basis for allocating emissions because all of the fuel 
products are used as sources of energy. Energy content also has the 
advantage of being a fixed factor as opposed to market prices which 
fluctuate over time.
6. Fuel Distribution
    We used the fuel distribution results from the biodiesel analysis 
for the March 2010 RFS rule. Fuel distribution emissions are relatively 
small compared to baseline lifecycle GHG emissions (see Table III.4: 
Lifecycle GHG Emissions Associated With Biofuels Produced From 
Distillers Sorghum Oil (kgCO<INF>2</INF>-eq/MJ) below), and although 
they may be different for different types of fuel, for the purposes of 
this analysis we assumed that heating oil, renewable diesel, jet fuel, 
LPG, and naphtha have the same fuel distribution emissions as biodiesel 
per mmBtu of fuel used.
7. Fuel Use
    For this analysis we applied fuel use emissions factors developed 
for the March 2010 RFS final rule. We used the biodiesel emissions 
factor for biodiesel and biodiesel used as heating oil. For renewable 
diesel and jet fuel we used the emissions factors for non-
CO<INF>2</INF> GHGs for baseline diesel fuel. For naphtha we used the 
emissions factors for non-CO<INF>2</INF> GHGs for baseline gasoline 
fuel. For LPG we used the LPG non-CO<INF>2</INF> emissions factor 
developed for the March 2010 RFS rule. The tailpipe emissions are 
relatively small, and the threshold GHG reduction results are not 
sensitive to these assumptions. More details on our analysis of fuel 
use emissions are described in a memo \57\ to the rulemaking docket.
---------------------------------------------------------------------------

    \57\ See, ``Summary of Key Assumptions for EPA's Analysis of the 
Lifecycle Greenhouse Gas Emissions Associated with Biofuels Produced 
from Distillers Sorghum Oil,'' Air Docket EPA-HQ-OAR-2017-0655.
---------------------------------------------------------------------------

8. Results of GHG Lifecycle Analysis
    Table III.4 shows the lifecycle GHG emissions associated with 
biofuels produced from distillers sorghum oil that result from our 
assessment. The table also shows the percent reduction relative to the 
petroleum baseline. All of the fuels are compared to the diesel 
baseline, except for naphtha which is compared to the gasoline 
baseline. Based on the lifecycle GHG emissions results presented above, 
all of the pathways evaluated meet the 50 percent GHG reduction 
threshold required for advanced biofuel and biomass-based diesel.

                           Table III.4--Lifecycle GHG Emissions Associated With Biofuels Produced From Distillers Sorghum Oil
                                                                      [kgCO2-eq/MJ]
--------------------------------------------------------------------------------------------------------------------------------------------------------
                                                                             Renewable
                         Fuel                              Biodiesel,       diesel, jet       Naphtha           LPG         2005 Diesel    2005 Gasoline
                                                          heating oil          fuel                                          baseline        baseline
--------------------------------------------------------------------------------------------------------------------------------------------------------
Production process                                     Transesterificati
                                                                      on                   Hydrotreating
                                                                    Refining
--------------------------------------------------------------------------------------------------------------------------------------------------------
Livestock Sector Impacts.............................               20.7            19.4            19.4            19.4  ..............  ..............
Feedstock Production.................................                6.6             6.2             6.2             6.2            18.0            19.2
Feedstock Transport..................................                0.3             0.3             0.3             0.3
Feedstock Pretreatment...............................                8.4
Fuel Production......................................                1.2             8.0             8.0             8.0
Fuel Distribution....................................                0.8             0.8             0.8             0.8
Fuel Use.............................................                0.7             0.7             1.7             1.5            79.0            79.0
                                                      --------------------------------------------------------------------------------------------------
    Total............................................               38.7            35.4            36.4            36.2            97.0            98.2
--------------------------------------------------------------------------------------------------------------------------------------------------------
Percent Reduction....................................                 60              64              63              63  ..............  ..............
--------------------------------------------------------------------------------------------------------------------------------------------------------

IV. Definition of Distillers Corn Oil

    In the March 2010 RFS final rule, EPA established two pathways 
(pathways F and H in Table 1 to 40 CFR 80.1426) for biomass-based 
diesel (D-code 4) or advanced biofuel (D-code 5) made from ``non-food 
grade corn oil.'' The lifecycle GHG analyses for these pathways were 
based on the EPA's modeling of corn oil recovered from DGS produced by 
a dry-mill corn ethanol plant through corn oil extraction. In the 
November 2016 REGS proposed rule, EPA proposed to revise pathways F and 
H in Table 1 to 40 CFR 80.1426 to specify that the feedstock is ``oil 
from corn oil extraction,'' rather than ``non-food grade corn oil,'' 
and to include a revised and somewhat broadened definition of ``corn 
oil extraction'' relative to the 2010 definition.\58\
---------------------------------------------------------------------------

    \58\ See section VII.B of the November 2016 REGS proposed rule 
(81 FR 80900-01).
---------------------------------------------------------------------------

    The proposed definitional change was motivated by the evolution of 
corn oil extraction technology within the ethanol industry, which 
allows ethanol producers to recover corn oil at different locations in 
the ethanol production process, with potential energy efficiency and 
ethanol yield benefits.
    In the November 2016 REGS proposed rule, EPA reasoned that the 
precise timing and method of corn oil extraction are not relevant for 
meeting the 50 percent GHG reduction threshold associated with pathways 
F and H, provided that a number of conditions are satisfied. 
Specifically, EPA proposed the following definition for corn oil 
extraction: ``Corn oil extraction means the recovery of corn oil at any 
point downstream of when a dry mill corn ethanol plant grinds the corn, 
provided that the corn is converted to ethanol, the oil is rendered 
unfit for food uses without further refining, and the oil extraction 
results in distillers grains marketable as animal feed.'' This 
definitional change was intended to both address the developments in 
corn oil extraction and to define the conditions under which corn oil 
qualifies as a feedstock for the purposes of Table 1.
    As explained below, rather than the approach proposed in the 2016 
REGS proposed rule, which would have revised the term ``corn oil 
extraction'' and replaced ``non-food grade corn oil'' with ``oil from 
corn oil extraction'' in rows F and H, EPA is instead leaving the 
definition of ``corn oil extraction'' as-is and is finalizing a 
definition for the term ``distillers corn oil'' that will be used in 
Table 1. The substance of the definition of ``distillers corn oil'' 
finalized here is consistent with the proposed definition for ``corn 
oil

[[Page 37744]]

extraction,'' other than changes made in response to comments. Thus, 
based on the comments received on the November 2016 REGS proposed rule, 
EPA is taking the following actions in this rulemaking: (1) Table 1 to 
40 CFR 80.1426 is revised to replace the term ``Non-food grade corn 
oil'' with ``Distillers corn oil'' in rows F and H; and (2) 40 CFR 
80.1401 is revised to add a definition of ``distillers corn oil''.
    The approach taken in this rule preserves the existing meaning of 
corn oil extraction for the purpose of the second row of Table 2 to 40 
CFR 80.1426 (the ``corn oil extraction advanced technology''); our 
intent was to broaden the non-food grade corn oil pathways listed in 
Table 1 to 40 CFR 80.1426, not to modify the corn oil extraction 
advanced technology specified in Table 2, which is relevant for corn 
starch ethanol pathways. The corn oil extraction advanced technology 
was included in the regulations based on analysis completed in the 
March 2010 RFS rule for pathways in rows A and B of Table 1 that can 
include extracting oil from whole stillage and/or derivatives of whole 
stillage, thus reducing energy use at dry mill ethanol plants.\59\ In 
order to avoid altering the scope of corn oil extraction for the 
purpose of Table 2 (which involves different pathways than rows F and 
H), it is most appropriate to create a new definition for distillers 
corn oil and to preserve the existing definition of corn oil 
extraction. Incidentally, we generally anticipate that corn oil 
recovered through corn oil extraction as listed in Table 2 to 40 CFR 
80.1426 should be able to qualify as distillers corn oil (provided it 
satisfied all of the definitional requirements) for the purpose of the 
pathways in rows F and H in Table 1; however, not all distillers corn 
oil will necessarily be recovered by processes that qualify as corn oil 
extraction. The comments received on EPA's proposed corn oil 
definitional changes are summarized below, with a more detailed summary 
and analysis included in the docket for this rulemaking.
---------------------------------------------------------------------------

    \59\ EPA has consistently viewed the non-food grade corn oil 
pathways as only available for facilities that extract corn oil 
produced at dry mill corn ethanol plants (see letter from Karl Simon 
of EPA to John W. Bode of the Corn Refiners Association, dated 
October 24, 2013). The change from ``non-food grade corn oil'' to 
``distillers corn oil'' and the associated definition will more 
clearly articulate this and other requirements for purposes of Table 
1.
---------------------------------------------------------------------------

    Four commenters on the November 2016 REGS proposed rule supported 
EPA's proposed revision to the definition of corn oil extraction.\60\ 
They said the proposed changes were needed to update the definition 
based on technological changes in the industry, and to provide a level 
playing field for new oil extraction methods. Seven commenters 
supported the proposed revisions and recommended the relatively small 
revisions discussed below.\61\ EPA also received four comments on the 
December 2017 sorghum oil proposed rule that supported finalizing the 
expanded definition of corn oil as part of this rulemaking.\62\ While 
EPA is not finalizing the definition of ``corn oil extraction'' that 
was proposed in the REGS rule, EPA believes that the approach being 
finalized today addresses the concerns of these commenters, as well as 
those of other commenters who raised questions about continued use of 
the term ``non-food grade corn oil.''
---------------------------------------------------------------------------

    \60\ EPA-HQ-OAR-2016-0041-0231, 0296, 0307 and 0313. For 
convenience, EPA is providing citations to the docket for the REGS 
proposed rule for comments that were filed in that docket on 
proposed changes to the regulations for corn oil, but these comments 
have also been included in the docket for this action.
    \61\ EPA-HQ-OAR-2016-0041-0243, 0246, 0260, 0266, 0267, 0277 and 
0286.
    \62\ EPA-HQ-OAR-2017-0655-0034, 0039, 0028, 0038.
---------------------------------------------------------------------------

    While no commenters objected to EPA's overall proposal to revise 
and expand the types of extracted corn oil that qualify as approved 
feedstocks in rows F and H of Table 1 to 40 CFR 80.1426, a number of 
commenters requested clarifications or modifications to EPA's proposed 
definition. Four commenters suggested that EPA should expand the 
definition of corn oil extraction even further to include corn oil 
recovered at butanol plants, because the dry mill process for butanol 
is very similar to those for dry mill ethanol with respect to 
conversion of corn to liquefied mash and recovery of distillers grains 
and thin stillage.\63\ Five commenters suggested that EPA should expand 
the definition of corn oil extraction to include corn oil from wet 
milling.\64\ These commenters stated that all corn oil meets the 
requirements of the RFS program and thus should be eligible feedstocks 
under the program. Four commenters requested that EPA expand the 
definition of corn oil extraction to include corn oil extracted after 
corn fractionation.\65\ These commenters stated that the fractionation 
process can be set up at a dry grind ethanol plant and the resulting 
extracted corn oil will still meet all the requirements for corn oil 
extraction. Two commenters requested that EPA clarify the proposed 
definition of corn oil extraction by stating that ``the oil is rendered 
unfit for human food uses without further refining.'' \66\ One 
commenter requested that EPA clarify the proposed definition of corn 
oil extraction to state that the resulting distillers grains include 
those that have been subjected to further oil recovery by a dry mill or 
third party.\67\ Three commenters stated that EPA's proposed addition 
of the phrase ``at any point downstream'' is inconsistent with its 
proposed approach for biointermediates and should be clarified.\68\ The 
commenters also state that the phrase ``oil is rendered unfit'' is 
unnecessary since all corn oil obtained from extraction is unfit for 
food uses. One commenter recommended using the term ``distillers corn 
oil'' as that term is better understood in the industry, and USDA 
reporting, to reference corn oil from dry mills.
---------------------------------------------------------------------------

    \63\ EPA-HQ-OAR-2016-0041-0243, 0246, 0267 and 0286.
    \64\ EPA-HQ-OAR-2016-0041-0259, 0270, 0282, 0300 and 0311.
    \65\ EPA-HQ-OAR-2016-0041-0278, 0282, 0300 and 0311.
    \66\ EPA-HQ-OAR-2016-0041-0266 and 0277.
    \67\ EPA-HQ-OAR-2016-0041-0260.
    \68\ EPA-HQ-OAR-2016-0041-0282, 0300 and 0311.
---------------------------------------------------------------------------

    Based on these comments, EPA is finalizing a definition that has 
been modified in several ways compared to the one proposed in the 
November 2016 REGS proposed rule. First, EPA has decided to use the 
term ``distillers corn oil'' because we agree with the commenter that 
the term is better understood in the industry and thus enhances the 
clarity of the regulations. Second, the definition has been revised to 
include corn oil recovered at dry mill butanol plants, given their 
similarities in terms of the oil recovery technologies used, the 
characteristics of the oil recovered and the resulting DGS co-products. 
Third, we have clarified that distillers corn oil is limited to oil 
that is unfit for human food use without further refining. Fourth, we 
have removed the word ``rendered'' from the definition as it is 
unnecessary and seemed to raise questions for commenters. Finally, we 
replaced the word ``extraction'' with ``recovery'' to avoid any 
confusion about how the definition interacts with the term ``corn oil 
extraction'' in 40 CFR 80.1401 and Table 2 to 40 CFR 80.1426.
    Other modifications recommended by commenters have not been 
incorporated into the definition finalized by this rulemaking. Corn oil 
from wet milling remains excluded from the definition. Corn oil 
produced at wet mills is

[[Page 37745]]

commonly sold as cooking oil for human food uses, and thus may have 
significantly different impacts than distillers corn oil. The GHG 
emissions associated with substituting for oil removed from animal 
feed, and specifically DGS, may be significantly different than the GHG 
emissions associated with substituting for oil removed from cooking oil 
markets. Thus, we believe the current LCA is insufficient to extend the 
pathway to corn oil produced at wet mills and it would be more 
appropriate to address wet mill corn oil through a separate action, 
such as a new fuel pathway petition submitted pursuant to 40 CFR 
80.1416. Fractionation is also not explicitly included, or otherwise 
mentioned, in the revised definition, as EPA has previously found that 
oil recovered through fractionation is likely to be sold for human food 
use; \69\ use of such oil for biofuel production would require a 
modified lifecycle assessment that is beyond the scope of this rule. 
Finally, EPA does not believe the definition finalized in this 
rulemaking contradicts the biointermediate provisions in the November 
2016 REGS proposed rule. Because it is listed as a feedstock in Table 1 
to 40 CFR 80.1426, the current regulations accommodate distillers corn 
oil used through the pathways in rows F and H unless it is 
substantially altered at a separate facility before delivery to the 
fuel production facility.
---------------------------------------------------------------------------

    \69\ See the Regulatory Impact Analysis for the March 2010 RFS 
rule, section 1.1.3.2 (Corn Oil Extracted During Ethanol 
Production).
---------------------------------------------------------------------------

V. Summary

    Based on our GHG lifecycle evaluation described above, we find that 
biodiesel and heating oil produced from distillers sorghum oil via a 
transesterification process, and renewable diesel, jet fuel and heating 
oil produced from distillers sorghum oil via a hydrotreating process 
meet the 50 percent GHG reduction threshold requirement for advanced 
biofuel and biomass-based diesel. Based on this finding, and providing 
that all regulatory requirements are satisfied, these fuels are 
eligible for biomass-based diesel (D-code 4) RINs if they are produced 
through a process that does not co-process renewable biomass and 
petroleum, and for advanced biofuel (D-code 5) RINs if they are 
produced through a process that does co-process renewable biomass and 
petroleum. The RFS regulations are also amended to add new and 
consistent definitions for ``distillers sorghum oil'' and ``distillers 
corn oil.'' As discussed above, we are allowing commingled distillers 
sorghum and corn oil to be reported as one volume under the existing 
registration, reporting and recordkeeping requirements, and therefore 
are not amending these sections.

VI. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review and Executive 
Order 13563: Improving Regulation and Regulatory Review

    This action is not a significant regulatory action and was 
therefore not submitted to the Office of Management and Budget (OMB) 
for review.

B. Executive Order 13771: Reducing Regulations and Controlling 
Regulatory Costs

    This action is not expected to be an Executive Order 13771 
regulatory action because this action is not significant under 
Executive Order 12866.

C. Paperwork Reduction Act (PRA)

    This action does not impose any new information collection burden 
under the provisions of the Paperwork Reduction Act, 44 U.S.C. 3501 et 
seq., and therefore is not subject to these requirements.

D. Regulatory Flexibility Act (RFA)

    I certify that this action will not have a significant economic 
impact on a substantial number of small entities under the RFA. This 
action will not impose any requirements on small entities. An agency 
may certify that a rule will not have a significant economic impact on 
a substantial number of small entities if the rule relieves regulatory 
burden, has no net burden or otherwise has a positive economic effect 
on the small entities subject to the rule. This rule enables distillers 
sorghum oil producers and producers of biofuels from distillers sorghum 
oil to participate in the RFS program, see CAA section 211(o), if they 
choose to do so in order to obtain economic benefits.

E. Unfunded Mandates Reform Act (UMRA)

    This action does not contain an unfunded mandate of $100 million or 
more as described in UMRA, 2 U.S.C. 1531-1538, and does not 
significantly or uniquely affect small governments. The action imposes 
no enforceable duty on any state, local or tribal governments or the 
private sector.

F. Executive Order 13132: Federalism

    This action does not have federalism implications. It will not have 
substantial direct effects on the states, on the relationship between 
the national government and the states, or on the distribution of power 
and responsibilities among the various levels of government.

G. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This action does not have tribal implications as specified in 
Executive Order 13175. This final rule would affect only producers of 
distillers sorghum oil and producers of biofuels made from distillers 
sorghum oil. Thus, Executive Order 13175 does not apply to this action.

H. Executive Order 13045: Protection of Children From Environmental 
Health Risks and Safety Risks

    The EPA interprets Executive Order 13045 as applying only to those 
regulatory actions that concern environmental health or safety risks 
that EPA has reason to believe may disproportionately affect children, 
per the definition of ``covered regulatory action'' in section 2-202 of 
the Executive Order. This action is not subject to Executive Order 
13045 because it because it does not concern an environmental health 
risk or safety risk.

I. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use

    This action is not subject to Executive Order 13211 because it is 
not a significant regulatory action under Executive Order 12866.

J. National Technology Transfer Advancement Act (NTTAA)

    This rulemaking does not involve technical standards.

K. Executive Order 12898: Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations

    The EPA believes that this action does not have disproportionately 
high and adverse human health or environmental effects on minority 
populations, low-income populations and/or indigenous peoples, as 
specified in Executive Order 12898 (59 FR 7629, February 16, 1994). 
This final rule does not affect the level of protection provided to 
human health or the environment by applicable air quality standards. 
This action does not relax the control measures on sources regulated by 
the fuel programs and RFS regulations and therefore will not cause 
emissions increases from these sources.

[[Page 37746]]

L. Congressional Review Act (CRA)

    This action is subject to the CRA, and the EPA will submit a rule 
report to each House of the Congress and to the Comptroller General of 
the United States. This action is not a ``major rule'' as defined by 5 
U.S.C. 804(2).

List of Subjects in 40 CFR Part 80

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Diesel Fuel, Fuel additives, Gasoline, Imports, 
Oil imports, Petroleum, Renewable fuel.

    Dated: July 24, 2018.
Andrew R. Wheeler,
Acting Administrator.

    For the reasons set forth in the preamble, EPA amends 40 CFR part 
80 as follows:

PART 80--REGULATION OF FUEL AND FUEL ADDITIVES

0
1. The authority citation for part 80 continues to read as follows:

    Authority: 42 U.S.C. 7414, 7521, 7542, 7545, and 7601(a).

Subpart M--Renewable Fuel Standard

0
2. Section 80.1401 is amended by adding, in alphabetical order, 
definitions for ``distillers corn oil'' and ``distillers sorghum oil'' 
to read as follows:


Sec.  80.1401  Definitions.

* * * * *
    Distillers corn oil means corn oil recovered at any point 
downstream of when a dry mill ethanol or butanol plant grinds the corn, 
provided that the corn starch is converted to ethanol or butanol, the 
recovered oil is unfit for human food use without further refining, and 
the distillers grains remaining after the dry mill and oil recovery 
processes are marketable as animal feed.
    Distillers sorghum oil means grain sorghum oil recovered at any 
point downstream of when a dry mill ethanol or butanol plant grinds the 
grain sorghum, provided that the grain sorghum is converted to ethanol 
or butanol, the recovered oil is unfit for human food use without 
further refining, and the distillers grains remaining after the dry 
mill and oil recovery processes are marketable as animal feed.
* * * * *

0
3. Section 80.1426 is amended in paragraph (f)(1), in Table 1 to Sec.  
80.1426, by revising entries ``F'', ``H'', and ``I'' to read as 
follows:


Sec.  80.1426  How are RINs generated and assigned to batches of 
renewable fuel by renewable fuel producers or importers?

* * * * *
    (f) * * *
    (1) * * *

         Table 1 to Sec.   80.1426--Applicable D Codes for Each Fuel Pathway for Use in Generating RINs
----------------------------------------------------------------------------------------------------------------
                                                                             Production process
                                  Fuel type               Feedstock             requirements          D-code
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
F........................  Biodiesel, renewable    Soy bean oil; Oil from  One of the following:               4
                            diesel, jet fuel and    annual covercrops;      Trans-Esterification
                            heating oil.            Oil from algae grown    Hydrotreating
                                                    photosynthetically;     Excluding processes
                                                    Biogenic waste oils/    that co-process
                                                    fats/greases;           renewable biomass
                                                    Camelina sativa oil;    and petroleum.
                                                    Distillers corn oil;
                                                    Distillers sorghum
                                                    oil; Commingled
                                                    distillers corn oil
                                                    and sorghum oil.
 
                                                  * * * * * * *
H........................  Biodiesel, renewable    Soy bean oil; Oil from  One of the following:               5
                            diesel, jet fuel and    annual covercrops;      Trans-Esterification
                            heating oil.            Oil from algae grown    Hydrotreating
                                                    photosynthetically;     Includes only
                                                    Biogenic waste oils/    processes that co-
                                                    fats/greases;           process renewable
                                                    Camelina sativa oil;    biomass and
                                                    Distillers corn oil;    petroleum.
                                                    Distillers sorghum
                                                    oil; Commingled
                                                    distillers corn oil
                                                    and sorghum oil.
I........................  Naphtha, LPG..........  Camelina sativa oil;    Hydrotreating........               5
                                                    Distillers sorghum
                                                    oil.
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------

* * * * *
[FR Doc. 2018-16246 Filed 8-1-18; 8:45 am]
BILLING CODE 6560-50-P


</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>