# Environmental Regulation and Agriculture

> Briefs, arguments, decisions, and more.

URL: https://www.frixlaw.com/law-library/documents/crs%3AR41622

## Record

- **Collection:** Congressional research report
- **Document type:** CRS Report
- **Published:** June 16, 2014
- **Citation:** R41622

## Text

Environmental Regulation and Agriculture
(name redacted), Coordinator
Specialist in Agricultural Conservation and Natural Resources Policy
June 16, 2014

Congressional Research Service
7-....
www.crs.gov
R41622

Environmental Regulation and Agriculture

Summary
As the U.S. and global economies continue to struggle, some inside and outside of Congress have
expressed concern about how environmental regulation may stifle growth and productivity. Much
of the criticism has focused on environmental regulations promulgated by the Environmental
Protection Agency (EPA). Some claim that EPA is overreaching its regulatory authority and
imposing costly and burdensome requirements on society. In general, the agriculture community,
among others, has been vocal in its concerns, contending that EPA appears to be focusing some of
its recent regulatory efforts on agriculture. Many public health and environmental advocates, on
the other hand, support many of EPA’s overall regulatory efforts and in some cases argue that EPA
has not taken adequate action to control the impacts of certain agricultural activities.
Most environmental regulations, in terms of permitting, inspection, and enforcement, are
implemented by state and local governments, often based on federal EPA regulatory guidance. In
some cases, agriculture is the direct or primary focus of the regulatory actions. In other cases,
agriculture is one of many affected sectors. Traditionally, farm and ranch operations have been
exempt or excluded from many environmental regulations. Given the agricultural sector’s size
and its potential to affect its surrounding environment, there is interest in both managing potential
impacts of agricultural actions on the environment and also maintaining an economically viable
agricultural industry. Of particular interest to agriculture are a number of regulatory actions
affecting air, water, energy, and pesticides.
Agricultural production practices from both livestock and crop operations generate a variety of
substances that enter the atmosphere, potentially creating health and environmental issues. Recent
actions by EPA to regulate emissions and pollutants have drawn criticism, including greenhouse
gas emission reporting and permitting requirements, and National Ambient Air Quality Standards
(NAAQS) related to particulate matter (commonly referred to as dust).
Water quality issues also are of interest to the agricultural industry, as water is an input for
production and can also be degraded as a result of production through the potential release of
sediment, nutrients, pathogens, and pesticides. Federal environmental laws largely do not regulate
agricultural actors, in many cases giving responsibilities to the states. One exception is large
concentrated animal feeding operations (CAFOs), which are subject to federal permitting
requirements. Constraints on agricultural production to reduce pollution discharges typically arise
at the state level in response to local concerns, and how to manage agricultural sources has been a
prominent issue in several locations, such as the Chesapeake Bay and Florida. A proposed federal
rule to define “waters of the United States” has drawn criticism from agriculture and others.
Changes in energy policy, namely increased bioenergy production continue to be important to
many in the agricultural industry, based on the potential of corn-based biofuel production to
contribute to the nation’s energy supply through both the renewable fuel standard (RFS) and the
increased percentage of ethanol in gasoline (E15).
Hundreds of chemical products are available to repel or kill “pests” that affect agricultural
production. The federal regulation of these pesticides includes registering and restricting their
use. The risks associated with agricultural pesticide use and possible impacts on human health
and the environment also have led to recent federal regulatory reviews.

Congressional Research Service

Environmental Regulation and Agriculture

Contents
Introduction...................................................................................................................................... 1
Report Content and Caveats ...................................................................................................... 2
Report Organization .................................................................................................................. 3
Air .................................................................................................................................................... 3
Mandatory Reporting of Greenhouse Gases (GHGs) ................................................................ 4
GHG Emissions Tailoring Rule and the “Cow Tax” ................................................................. 6
Reduction of Emissions from Gasoline/Diesel Powered Stationary Engines............................ 8
National Ambient Air Quality Standards (NAAQS)—Particulate Matter ................................. 9
National Ambient Air Quality Standards (NAAQS)—Ozone ................................................. 13
EPCRA and CERCLA Reporting Requirements ..................................................................... 14
Water .............................................................................................................................................. 15
Implementation of Existing Clean Water Act Permit Requirements for CAFOs .................... 16
Chesapeake Bay Protection and Restoration ........................................................................... 18
Florida Nutrient Water Quality Standards ............................................................................... 21
Defining “Waters of the United States” ................................................................................... 23
Spill Prevention, Control, and Countermeasure (SPCC) Plans ............................................... 25
Energy ............................................................................................................................................ 28
Renewable Fuels Standard (RFS2) Rule ................................................................................. 28
E15 Waiver Petition ................................................................................................................. 31
Pesticides ....................................................................................................................................... 33
Clean Water Act Permits for Pesticide Application ................................................................. 34
Pesticide Spray Drift................................................................................................................ 36
Atrazine ................................................................................................................................... 38
Pesticide Registrations and the Endangered Species Act (ESA) ............................................. 39

Figures
Figure 1. Status of PM10 Nonattainment Areas .............................................................................. 11

Tables
Table 1. CRS Specialists on Environmental Issues ......................................................................... 3
Table 2. EPA Animal Population Threshold Below Which Facilities Would Not Be
Required to Report GHG Emissions............................................................................................. 6

Contacts
Author Contact Information........................................................................................................... 42

Congressional Research Service

Environmental Regulation and Agriculture

Introduction
A healthy agricultural industry and a healthy environment are both important to the nation.
However, agricultural production can have varying impacts on the environment. The use of both
natural resources (e.g., soil and water) and synthetic inputs (e.g., fertilizers and pesticides) in
agricultural production can sometimes create a negative impact on the surrounding ecosystem.
For example, soil erosion, farm chemical runoff, and overgrazing can affect water and air
resources. Converting grassland prairies and wetlands to crop production can impact wildlife
populations. The magnitude of these environmental impacts varies widely across the country and
changes over time.
Traditionally, farm and ranch operations have been exempt or excluded from many federal
environmental statutes and regulations, and some point out that the relative number of
environmental regulations affecting agriculture is small compared to other industries.1
Historically, environmental policies have focused on large industrial sources such as factories and
power plants, because attempting to regulate numerous individual crop and livestock operations
can be a challenge for government regulators. Therefore, the current federal farm policy
addressing environmental concerns is in large part voluntary; that is, it seeks to encourage
agricultural producers to adopt conservation practices through economic incentives. Because
natural resources are a major input into most agricultural production, many in agriculture cite the
health of the surrounding environment as being important for long-term productivity. However,
given the agricultural sector’s size in the landscape2 and its potential to affect its surrounding
environment, there is interest in both managing potential impacts of agricultural actions on the
environment and also maintaining an economically viable agricultural industry.
The U.S. Environmental Protection Agency (EPA) is the primary federal authority for
administering environmental protection policies, while the U.S. Department of Agriculture
(USDA) is the primary federal authority for incentivizing agricultural production. Most
environmental regulation, in terms of permitting, inspection, and enforcement, is done by state
and local governments, typically based on policies administered by the EPA. USDA provides both
educational outreach and technical and financial assistance opportunities for producers to
implement environmentally sustainable practices.3 While many of these voluntary programs and
policies have been in place for decades and have had considerable success, some question
whether a strictly voluntary approach to agricultural conservation generates sufficient
environmental gains.4 EPA, on the other hand, has recently received criticism from some
lawmakers and industry leaders for appearing to focus some of its recent regulatory efforts on
agriculture. Some claim EPA has overreached its regulatory authority. In general, agricultural
industry groups, among others, have been vocal in their displeasure with recent EPA regulatory
proposals and the costs associated with protecting public health and the environment. Others,
1

J. B. Ruhl, “Farms, Their Environmental Harms, and Environmental Law,” vol. 27, no. 2 (2000), pp. 263-350.
A total of 1.9 billion acres of land and water cover the contiguous 48 states, of which 71% is non-federal rural land
(nearly 1.4 billion acres). Non-federal rural lands are predominantly rangeland (409 million acres), forest land (406
million acres), and cropland (357 million acres). Source: USDA, NRCS, 2007 National Resources Inventory, Summary
Report, Washington, DC, December 2009, p. 6, http://www.nrcs.usda.gov/technical/NRI/2007/
2007_NRI_Summary.pdf.
3
For more information, see CRS Report R40763, Agricultural Conservation: A Guide to Programs.
4
Michelle Perez, Craig Cox, and Ken Cook, Facing Facts in the Chesapeake Bay, Environmental Working Group,
September 2009, http://www.ewg.org/files/chesapeake-bay-pollution.pdf.
2

Congressional Research Service

1

Environmental Regulation and Agriculture

such as environmental groups, have supported some of the regulatory actions and in some
instances voiced concerns that the federal actions may not go far enough in protecting public
health and the environment, prompting some lawmakers offer statements supporting various EPA
regulatory efforts.
Criticisms of the regulatory actions are reflected in recent legislative proposals that would restrict
or prohibit certain actions.5 Beyond the criticism of individual regulations of EPA and other
agencies, there also are calls for broad regulatory reforms, for example, to reinforce the role of
economic considerations in agency decision making or to increase Congress’s role in approving
or disapproving regulatory decisions. Congress will likely continue to give attention to EPA’s and
other federal agencies’ roles in regulating environmental protection. Both the Senate and House
Committees on Agriculture have shown particular interest in EPA’s actions and conducted
oversight hearings on regulatory impacts on agriculture during the 112th Congress.6

Report Content and Caveats
This report provides the background, status, and issues related to selected environmental
regulations or initiatives possibly affecting agriculture that have drawn attention in and beyond
Congress.7 An issue’s inclusion in this report is not intended to suggest or imply that the
regulation or action has either a beneficial or harmful effect on agriculture or to what degree.
Similarly, regulatory actions not included in this report do not indicate the lack of potential
impact on the agriculture sector.
This report only addresses federal regulatory actions. In many cases, constraints on agricultural
production to reduce pollution emissions arise at the state level in response to local concerns.
State and local regulations are not specifically included in this report, but may be discussed
generally where appropriate. Actions considered voluntary or in response to regulatory actions are
also not included. This means that many USDA programs and initiatives, which offer funding to
agricultural producers mitigate environmental impacts, are not discussed in this report.
The majority of the regulations discussed in this report are administered by EPA, though not all.
In some cases, agriculture is the direct or primary focus of the regulatory actions. In other cases,
agriculture is one of many affected sectors. In many cases, for a regulation to become effective,
EPA rules must be adopted by states to which the program has been delegated (e.g., most
environmental permitting programs are delegated to qualified states). Moreover, many states
require that the state legislature review new regulations before the new rules would take effect.
The general regulatory development and compliance process can be tedious and complex. In
some cases, the promulgation and implementation of regulations may take years.8 In the case of
5

For example, the House-passed long-term continuing resolution H.R. 1, which was not enacted, is discussed further
below. For more information, see CRS Report R41698, H.R. 1 Full-Year FY2011 Continuing Resolution: Overview of
Environmental Protection Agency (EPA) Provisions.
6
For example, U.S. Congress, Senate Committee on Agriculture, Nutrition, and Forestry, Oversight Hearing to
Examine the Impact of EPA Regulation on Agriculture, 111th Cong., 2nd sess., September 23, 2010; and U.S. Congress,
House Committee on Agriculture, Public Hearing to Review the Impact of EPA Regulation on Agriculture, 112th
Cong., 1st sess., March 10, 2011.
7
For additional information regarding EPA regulations beyond those affecting agriculture, see CRS Report R41561,
EPA Regulations: Too Much, Too Little, or On Track?.
8
Some regulations do not become effective immediately. In some cases, the regulation takes effect over time or
gradually expands to affect more individuals. Virtually all major EPA regulatory actions are subjected to court
(continued...)

Congressional Research Service

2

Environmental Regulation and Agriculture

some environmental regulations, the agencies must adhere to court-ordered requirements and
deadlines.9
This report has been revised and updated a number of times since its initial release in early 2011.
A few of the initial issues covered in this report are no longer congressionally active, either due to
enacted legislation or because of a change in Administration priorities. These issues have been
removed and new emerging issues have been added. Congressional interest in environmental
regulations affecting agriculture remains and oversight is ongoing. Legislative action and
oversight is discussed within each of the sections below.

Report Organization
The remainder of this report is organized under four broad subheadings: Air, Water, Energy, and
Pesticides. Each section includes selected regulatory actions and provides background
information and statutory authority, followed by the current status of the rule or regulatory action
and issues identified or raised by the agricultural community regarding the regulatory action.
Finally, each section identifies the appropriate CRS specialist for additional information; these
contacts are also listed in Table 1.
Table 1. CRS Specialists on Environmental Issues
Issue Area

CRS Specialist

Contact Information

Voluntary agriculture conservation

(name redacted)

Clean Air Act

Jim McCarthy

/redacted/@crs.loc.gov, 7-....

Clean Air Act, particulate matter

Rob Esworthy

/redacted/@crs.loc.gov, 7-....

Clean Water Act

(name redacted)

/redacted/@crs.loc.gov, 7-....

Spill prevention

Jonathan Ramseur

/redacted/@crs.loc.gov, 7....

Agriculture-based biofuels, ethanol

(name redacted)

/redacted/@crs.loc.gov, 7-....

Advanced biofuels

(name redacted)

/redacted/@crs.loc.gov, 7-....

Clean Air Act, mobile sources, biofuels

Brent Yacobucci

/redacted/@crs.loc.gov, 7-....

Pesticides, Toxic Substances Control Act

Jerry Yen

/redacted/@crs.loc.gov, 7-....

Endangered Species Act

(name redacted)

/redacted/@crs.loc.gov, 7-....

/redacted/@crs.loc.gov, 7-....

Air
Agricultural production practices from both livestock and crop operations generate a variety of
substances that enter the atmosphere, potentially creating health and environmental issues.
Agriculture’s effect on air quality rose to national importance in the 1930s, when the conversion
of native grasslands to cropland caused severe dust storms known as the Dust Bowl. The federal
(...continued)
challenge, which also delays the implementation.
9
Court-ordered dates for proposed or promulgated regulations may change. It is not uncommon for EPA to request
extensions of time, often due to the need to analyze extensive comments.

Congressional Research Service

3

Environmental Regulation and Agriculture

response to this phenomenon created many of the conservation outreach and education programs
that remain in place today.10 While dust storms of this proportion are rare in the United States
today, issues associated with soil erosion, particulates and farm chemical emissions, and livestock
odor are still of concern.
The following section covers five federal regulations relating to air, including
•

mandatory reporting of greenhouse gases (GHGs);

•

GHG emissions tailoring rule and the “cow tax”;

•

reductions of emissions from gasoline/diesel powered stationary engines;

•

national ambient air quality standards (particulate matter and ozone); and

•

Emergency Planning and Community Right-to-Know Act (EPCRA) and
Comprehensive Environmental Response, Compensation, and Liability Act
(CERCLA) reporting requirements.

Mandatory Reporting of Greenhouse Gases (GHGs)
EPA was required by the FY2008 Consolidated Appropriations Act11 “to develop and publish a ...
final rule not later than 18 months after the date of enactment of this Act, to require mandatory
reporting of greenhouse gas (GHG) emissions above appropriate thresholds in all sectors of the
economy of the United States.”
On October 30, 2009, EPA promulgated the final Greenhouse Gas Reporting Rule.12 The rule
required suppliers of fossil fuels or industrial gases, manufacturers of vehicles and engines,
owners or operators of electric power plants, and other—mostly industrial—sources to report
their emissions of GHGs to EPA annually, beginning in 2011. Covered entities are required to
report to EPA if they emit 25,000 tons or more of carbon dioxide or the equivalent amount of five
other GHGs (methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur
hexafluoride and other fluorinated gases). About 10,000 facilities in 31 categories of sources were
covered by the rule, as promulgated. EPA subsequently added 11 other categories of sources.

Status
The only agricultural sources covered by the Reporting Rule are manure management systems
that emit methane and nitrous oxide in amounts greater than the reporting threshold. EPA
identified six specific categories of agricultural sources that could be subject to the rule: beef
cattle feedlots; dairy cattle and milk production facilities; hog and pig farms; chicken egg
production facilities; turkey production; and broilers and other meat type chicken production. In
all, EPA estimates that 107 livestock facilities nationwide would need to report under the rule.

10

For additional information, see CRS Report RL34069, Technical Assistance for Agriculture Conservation.
P.L. 110-161.
12
U.S. Environmental Protection Agency, “Mandatory Reporting of Greenhouse Gases,” 74 Federal Register 56260,
October 30, 2009.
11

Congressional Research Service

4

Environmental Regulation and Agriculture

In EPA’s FY2010 appropriations act,13 however, Congress included language barring EPA from
using funds under that act to implement mandatory GHG reporting by manure management
facilities. This prohibition has been carried over into FY2011, FY2012, FY2013, and FY2014 by
the continuing resolutions and appropriations acts that have funded EPA’s continued operation,
including P.L. 113-76, the Consolidated Appropriations Act of 2014. Therefore, despite the
inclusion of manure management systems among the regulated entities, no agricultural sources
are currently required to comply with the Reporting Rule.

Issues
For the facilities required to report, the rule imposes little cost because it only requires monitoring
and reporting, and the monitoring does not require direct measurement of emissions. EPA
considered requiring direct measurement of GHG emissions from manure management systems,
but rejected the approach due to what it termed “the extreme expense and complexity of such a
measurement program.”14 Instead, the agency promulgated an approach that allows the use of
default factors, such as a system emission factor, for certain elements of the calculation,
combined with the use of site-specific data (e.g., number of livestock). EPA estimated the total
annual cost of the rule for the 107 potentially affected manure management facilities at $300,000.
In comments on the proposed rule, a number of agricultural stakeholders noted that agriculture as
a whole is responsible for less than 1% of total GHGs emitted and questioned why manure
management systems in particular were included in the proposal. Other categories of agricultural
sources, such as livestock enteric fermentation and soil management, emit larger amounts of
methane and nitrous oxide. EPA explained that it did not include reporting by the other
agriculture categories because, for those sources, no direct GHG emission measurement methods
are available except for expensive and complex equipment. Using emissions estimates for such
sources, instead of direct measurement, would have a high degree of uncertainty and could
burden a large number of small emitters.
Commenters also expressed concern about the difficulty that livestock facilities might have in
determining whether or not they are subject to the rule. In response, EPA modified the proposal to
remove manure sampling requirements and instead will allow facilities to use default values for
estimating emissions. The threshold table within the final rule (Table 2) identifies animal
population threshold levels below which facilities are not required to report emissions.

CRS Contacts
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov, or Jim McCarthy, Specialist in Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

13

Department of the Interior, Environment, and Related Agencies Appropriations Act, 2010, P.L. 111-88.
U.S. Environmental Protection Agency, “Mandatory Reporting of Greenhouse Gases,” 74 Federal Register 56339,
October 30, 2009.
14

Congressional Research Service

5

Environmental Regulation and Agriculture

Table 2. EPA Animal Population Threshold Below Which Facilities Would Not Be
Required to Report GHG Emissions
Animal Group

Average Animal
Population (Head)

Beef

29,300

Dairy

3,200

Swine

34,100

Poultry:
Layers

723,600

Broilers

38,160,000

Turkeys

7,710,000

Source: U.S. Environmental Protection Agency, “Mandatory Reporting of Greenhouse Gases,” 74 Federal
Register 56485, October 30, 2009.
Notes: For all animal groups except dairy, the average annual animal population represents the total number of
animals present at the facility. For dairy facilities, the average annual animal population represents the number of
mature dairy cows present at the facility. For additional information, see Table JJ-1of the Environmental
Protection Agency, “Mandatory Reporting of Greenhouse Gases,” 74 Federal Register 56485, October 30, 2009.

GHG Emissions Tailoring Rule and the “Cow Tax”
EPA promulgated standards for GHG emissions from new light duty motor vehicles on May 7,
2010.15 The standards themselves are not considered particularly controversial, but their
implementation, on January 2, 2011, triggered two other requirements of the Clean Air Act
(CAA) that apply to stationary sources. The first of these is a requirement that stationary sources
emitting any air pollutant “subject to regulation” under the act must obtain a permit under Title V
of the CAA (Title V permit) if they emit more than 100 tons per year of the pollutant subject to
regulation. Agricultural sources, such as confined animal feeding operations (CAFOs), are among
those that could potentially be subject to this permit requirement. Because permit applicants must
pay a fee to cover the costs of administering the permit program, many in the agriculture
community have referred to this requirement as the “cow tax.”
The second requirement triggered by implementation of the motor vehicle standards is a
requirement that new or modified stationary sources emitting more than 100 or 250 tons annually
of any pollutant subject to regulation under the act must obtain pre-construction permits (referred
to as “PSD” permits) and install Best Available Control Technology (BACT) to reduce emissions.

Status
On June 3, 2010, EPA promulgated a rule that sets higher thresholds for the Title V permit and
PSD/BACT requirements that would apply to GHG emissions.16 EPA says that under the
15
U.S. Environmental Protection Agency, U.S. Department of Transportation, “Light-Duty Vehicle Greenhouse Gas
Emission Standards and Corporate Average Fuel Economy Standards; Final Rule,” 75 Federal Register 25324-25728,
May 7, 2010.
16
U.S. Environmental Protection Agency, “Prevention of Significant Deterioration and Title V Greenhouse Gas
Tailoring Rule; Final Rule,” 75 Federal Register 31514, June 3, 2010.

Congressional Research Service

6

Environmental Regulation and Agriculture

promulgated rule, the agency has not identified any agricultural sources that would be required to
obtain permits for GHG emissions, and therefore none would be subject to BACT requirements.17
Under the rule, called the GHG “Tailoring Rule,” the threshold initially is annual emissions of
75,000 tons of carbon dioxide equivalents, not 100 or 250 tons as required for other pollutants by
the PSD and Title V permits. With this threshold, the nation’s largest GHG emitters, including
power plants, refineries, cement production facilities, and about two dozen other categories of
sources (an estimated 17,000 facilities in all, or nearly 70% of the nation’s largest stationary
source GHG emitters), are the only sources required to obtain permits. Farms, smaller businesses,
and large residential structures (about 6 million sources in all these categories), which would
otherwise be required to obtain permits after GHGs became subject to regulation, are shielded
from permitting requirements, including permit fees.
The June 2010 Tailoring Rule does not permanently exempt smaller sources. In promulgating the
rule, EPA said it expected to lower the threshold, but not below 50,000 tons of GHG emissions,
through separate rule-making that would take effect in 2013. The agency has subsequently
decided not to lower the threshold and has also stated that, within five years of the rule’s
promulgation, EPA and state permitting authorities would conduct a study of the permitting
authorities’ ability to administer more inclusive PSD and Title V permit programs. Within a year
of the study’s completion, EPA and state permitting authorities would conduct rulemaking for this
phase of the program. The study might confirm the threshold, revise it, or establish other
streamlining techniques for subsequent permitting activity. It is unclear how agricultural sources
might be affected by these potential rule changes.
In the FY2010 appropriations act for EPA,18 Congress included a provision prohibiting EPA from
using funds under the act to promulgate or implement any rule requiring the issuance of CAA
Title V permits for GHG emissions associated with livestock production. This prohibition was
carried over into FY2011, FY2012, FY2013, and FY2014 by the subsequent appropriations
measures that fund EPA’s continued operation.

Issues
The issues related to the Tailoring Rule are similar to those raised by the “Mandatory Reporting
of Greenhouse Gases (GHGs),” discussed above. The rule itself appears to exempt all agricultural
sources by its high thresholds and the exclusion of fugitive emissions, but many are concerned
about whether EPA intends to consider any agricultural sources as subject to regulation under
future Clean Air Act GHG rules.

17

EPA Briefing on the Tailoring Rule, House Energy and Commerce Committee, May 14, 2010. This issue is also
discussed in RTI International, for U.S. EPA, “Regulatory Impact Analysis for the Final Prevention of Significant
Deterioration and Title V Greenhouse Gas Tailoring Rule,” Final Report, May 2010, pp. 64-66, at http://www.epa.gov/
ttn/ecas/regdata/RIAs/riatailoring.pdf. A key reason that agricultural sources would not require permits is that EPA
excludes what are called “fugitive emissions” from the emissions used to determine whether an agricultural source is a
major source subject to permit requirements. Fugitive emissions are emissions that are not released through a stack or
vent, or could not be reasonably collected and released through a stack or vent.
18
P.L. 111-88.

Congressional Research Service

7

Environmental Regulation and Agriculture

CRS Contacts
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov, or Jim McCarthy, Specialist in Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

Reduction of Emissions from Gasoline/Diesel Powered
Stationary Engines
On June 15, 2004, EPA promulgated emission control standards for hazardous air pollutants
emitted by gasoline- and diesel-powered stationary engines. This is primarily of concern to
agricultural operations that rely on gas and diesel engines for irrigation pumping. The standards
are generally referred to as the RICE (Reciprocating Internal Combustion Engine) rules. Besides
setting emission standards, the rules would have exempted these engines from emission controls
during startup, shutdown, and periods of malfunction. On December 18, 2008, the D.C. Circuit
Court of Appeals ruled that the standards must address emissions during all phases of operation,
including periods of startup, shutdown, and malfunction. As a result, the court vacated and
remanded the rules to EPA.

Status
EPA subsequently divided the standards into two regulatory actions. On March 3, 2010, it issued
a final rule for existing diesel-powered stationary engines.19 The rule applies to more than
900,000 stationary engines used as generators and to power pumps in industrial and agricultural
settings. EPA issued final emissions standards for existing stationary engines that burn gasoline,
natural gas, and landfill gas, known as spark ignition engines, on August 20, 2010.20

Issues
The proposed rules were criticized by some state permitting authorities and industry groups as
being unworkable, difficult to enforce, and perhaps unnecessary in rural settings. In response to
these comments, EPA stated that most engines used by agricultural sources are smaller than 300
horsepower, and will be subject only to required management practices (e.g., frequency of oil
changes). Catalysts or other control equipment would not be required.

CRS Contact
Jim McCarthy, Specialist in Environmental Policy, 7-...., [redacted]@crs.loc.gov.

19

U.S. Environmental Protection Agency, “National Emission Standards for Hazardous Air Pollutants: Reciprocating
Internal Combustion Engines; Final Rule,” 75 Federal Register 9648, March 3, 2010.
20
U.S. Environmental Protection Agency, “National Emission Standards for Hazardous Air Pollutants for
Reciprocating Internal Combustion Engines; Final Rule,” 75 Federal Register 51570, August 20, 2010.

Congressional Research Service

8

Environmental Regulation and Agriculture

National Ambient Air Quality Standards (NAAQS)—
Particulate Matter
National Ambient Air Quality Standards (NAAQS) are standards for outdoor (ambient) air that
are intended to protect public health and welfare from harmful concentrations of pollution.
NAAQS are at the core of the Clean Air Act, even though they do not directly regulate emissions.
In essence, they are standards that define what EPA considers to be clean air. Once a NAAQS has
been set, the agency, using monitoring data and other information submitted by the states,
identifies areas that exceed the standard and must, therefore, reduce pollutant concentrations to
achieve it. After these “nonattainment” areas are identified, state and local governments have up
to three years to produce State Implementation Plans that outline the measures they will
implement to reduce the pollution levels and attain the standards.
NAAQS have been set for six pollutants. The two that affect the largest number of areas are those
for ozone and particulate matter (PM). Because some farming and livestock practices contribute
to particulate matter emissions and because particulate matter and ozone can affect agricultural
productivity, the agricultural community has shown particular interest in these standards. NAAQS
ozone issues are discussed in the next section.

Status
Partially in response to an June 6, 2012 order by the U.S. District Circuit Court for the District of
Columbia,21 and as agreed to in a consent decree,22 EPA published a final rule revising the PM
NAAQS January 15, 2013. The January 2013 revisions change the existing (2006) annual healthbased (“primary”) standard for “fine” particulate matter 2.5 micrometers or less in diameter
(PM2.5), lowering the allowable average concentration of PM2.5 in the air from the current level of
15 micrograms per cubic meter (µg/m3) to a limit of 12 µg/m3. The existing “24-hour primary
standard” for PM2.5 that was reduced from 65 µg/m3 to 35 µg/m3 in 2006 was retained, as was the
existing standard for larger, but still inhalable, “coarse” particles less than 10 micrometers in
diameter, or PM10.
EPA promulgated its previous final revisions to the PM NAAQS and the associated national air
quality monitoring requirements on October 17, 2006,23 primarily strengthening the preexisting
(1997) PM2.5. The 2006 PM NAAQS revisions did not strengthen the existing annual standard for
PM10.24 The EPA periodic review (as mandated by statute25) of the PM standards supporting the
21

American Lung Ass'n v. EPA, D.D.C., No. 1:12-cv-243, order issued June 6, 2012.
American Lung Ass’n v. EPA, D.D.C., No. 1:12-cv-243, order signed September 4, 2012. See also U.S. EPA,
“Proposed Consent Decree,” 77 Federal Register 38060, June 26, 2012, http://www.gpo.gov/fdsys/search/
pagedetails.action?granuleId=2012-15603&packageId=FR-2012-06-26&acCode=FR, and American Lung Ass'n v.
EPA, D.D.C., No. 1:12-cv-243, joint motion filed June 5, 2012.
23
U.S. Environmental Protection Agency, “National Ambient Air Quality Standards for Particulate Matter,” 71 Federal
Register 61144-61233, October 17, 2006; and U.S. Environmental Protection Agency, “Revisions to Ambient Air
Monitoring Regulations,” 71 Federal Register 61236-61238, October 17, 2006. EPA indicated that it would be
expanding its research and monitoring programs to collect additional evidence on the differences between thoracic
coarse particles typically found in urban areas and those typically found in rural areas.
24
For additional information, see CRS Report RL34762, The National Ambient Air Quality Standards (NAAQS) for
Particulate Matter (PM): EPA’s 2006 Revisions and Associated Issues.
25
Section 109(d)(1) of the Clean Air Act requires EPA to review the NAAQS and the scientific information upon
(continued...)
22

Congressional Research Service

9

Environmental Regulation and Agriculture

revisions published January 2013, was initiated at the same time as implementation of the current
2006 PM NAAQS.
Revising PM NAAQS starts a process that includes a determination of areas in each state that
exceed the standard and must therefore reduce pollutant concentrations to achieve it. Following
determinations of these “nonattainment” areas based on multiple years of monitoring data and
other factors, state and local governments must develop (or revise) State Implementation Plans
(SIPs) outlining measures to attain the standard. Based on statutory scheduling requirements,
nonattainment designations for revised PM NAAQS will not be determined until the end of 2014,
and states would have until at least 2020 to achieve compliance with the January 2013 revised
PM2.5 NAAQS. Based on anticipated reductions associated with several other existing national air
pollution control regulations and programs, EPA predicted that seven counties in California would
be the only areas unable to meet the new PM2.5 primary standard by 2020.
The 2006 revised NAAQS, primarily affected urban areas: 120 counties and portions of counties
in 18 states have been designated nonattainment areas for PM2.5 by EPA based on 2006-2008 air
quality monitoring data. Final designations for the 2006 PM NAAQS were published November
13, 2009. The majority of the roughly 3,000 counties throughout the United States (including
tribal lands) were designated attainment/unclassifiable, and are not required to impose additional
emission control measures to reduce PM2.5. For those 120 counties designated nonattainment for
PM2.5, states had until November 2012 to submit state implementation plans (SIPs) identifying
specific regulations and emission control requirements that would bring an area into compliance
with the standard.26
The EPA will not be designating any new nonattainment areas for PM10 NAAQS since the
standards were not strengthened by the 2013 NAAQS revision. Similarly, EPA did not designate
any new areas for PM10 following the 2006 final PM NAAQS revisions. To the contrary, a
number of counties previously designated nonattainment have been determined by EPA to be in
attainment since the 2006 NAAQS revisions. As indicated in Figure 1, below, the majority of the
counties throughout the United States (including tribal lands) are designated
attainment/unclassifiable for the PM10 NAAQS. As of February 6, 2014, 49 of the original 89
areas designated nonattainment for PM10 had been redesignated to maintenance.27 As shown in
Figure 1, the remaining 40 areas are either meeting the PM10 NAAQS based on assessment of
2010-2012 air quality data (most recent three years available) and awaiting consideration for
redesignation, have incomplete data, or remain nonattainment.28 Those areas previously
designated nonattainment for the PM10 NAAQS typically include, or were adjacent to, densely
populated localities, where PM monitors are frequently located. Only a subset of PM10 NAAQS
nonattainment areas in California and Arizona have SIPs that directly include requirements
related specifically to agricultural operations in addition to requirements for other sources.
(...continued)
which they are based at five-year intervals.
26
For additional information, see CRS Report R40096, 2006 National Ambient Air Quality Standards (NAAQS) for
Fine Particulate Matter (PM2.5): Designating Nonattainment Areas.
27
See EPA’s PM10 designations at http://www.epa.gov/air/oaqps/greenbk/pindex.html.
28
According to information provided to CRS by EPA’s Office of Air Quality Planning and Standards (OAQPS)
February 2014, 15 areas are meeting the PM10 NAAQS based on 2010-2012 air quality data. States have submitted
maintenance plans for 2 of these 15, and EPA has published clean data determinations for an additional 2 (of the 15)
areas to suspend the PM10 attainment plan requirement. Additionally, 13 areas have incomplete data and 12 areas
remain nonattainment based on 2010-2012 air quality data..

Congressional Research Service

10

Environmental Regulation and Agriculture

Figure 1. Status of PM10 Nonattainment Areas
(status is based on 2010-2012 air quality; many areas are indicated as only portions of counties)

Source: Provided directly to CRS by EPA’s Office of Air Quality Planning and Standards, February 2014.
Notes: Nonattainment area status as identified on the map is based on 2010-2012 air quality data, the most
currently available three-year dataset at the time the determinations were made. Areas not highlighted on the
map are designated attainment/unclassifiable. There are no PM10 nonattainment areas in Alaska and Hawaii, which
was not included on the map as provided by EPA. For more information, see CRS Report RL34762, The National
Ambient Air Quality Standards (NAAQS) for Particulate Matter (PM): EPA’s 2006 Revisions and Associated Issues.

Issues
The agricultural community has generally been more concerned with EPA’s review and potential
changes of the PM10 NAAQS than with the PM2.5 NAAQS.29 Thoracic coarse particles (PM10) are
generally emitted as a result of mechanical processes that crush or grind larger particles or the
resuspension of dusts.30 While certain agricultural operations can contribute to emission of
PM10—sometimes referred to as “farm dust”—there are many sources of thoracic coarse particles,
for example, unpaved and paved roads, traffic-related emissions such as tire and brake lining
materials, direct emissions from industrial operations, construction and demolition activities, and
mining operations. EPA has noted that atmospheric science and monitoring information indicates
29

There was some concern regarding designations in rural areas for the 2006 PM2.5 NAAQS. The designated
nonattainment areas for the PM2.5 are primarily concentrated in and around highly populated metropolitan areas.
30
U.S. Environmental Protection Agency, “National Ambient Air Quality Standards for Particulate Matter,” 71 Federal
Register 61146, October 17, 2006.

Congressional Research Service

11

Environmental Regulation and Agriculture

that exposures to PM10 tend to be higher in urban areas than in nearby rural locations.31 Urban or
industrial ambient mixes of PM10 dominated by high-density vehicular, industrial, and
construction emissions have been the primary concern with respect to reducing the negative
health effects. EPA continues to research the link between coarse particle composition and
toxicity, including the toxicity of urban versus rural particles.
During the review process leading up to the publication of the revised PM NAAQS in January
2013, some Members of the 112th Congress raised concerns in letters to the EPA Administrator32
and during oversight hearings,33 about EPA’s staff draft reports,34 the Clean Air Scientific
Advisory Committee (CASAC) recommendations,35 and the potential impacts that tightening the
PM10 NAAQS standards could have on the agricultural industry. Many Members encouraged EPA
to retain the current PM10 NAAQS standards. Other Members urged the Administrator to include
retaining the PM2.5 as an option for consideration in the agency’s proposed rule.36 In addition,
proposed legislation during the 112th Congress addressed the ongoing PM NAAQS review.37 The
January 15, 2013, final PM NAAQS rule revised the PM2.5 standard but did not modify the
standards for inhalable “coarse” particles larger than 2.5 but smaller than 10 microns (PM10), nor
were modifications to the PM10 standard proposed in 2012.

CRS Contact
(name redacted), Specialist in Environmental Policy, 7-...., [redacted]@crs.loc.gov.
31

U.S. Environmental Protection Agency, “Review of the National Ambient Air Quality Standards for Particulate
Matter: Policy Assessment of Scientific and Technical Information,” p. 2-36, OAQPS Staff Paper EPA-452/R-05-005a,
December 2005, http://www.epa.gov/ttn/naaqs/standards/pm/data/pmstaffpaper_20051221.pdf.
32
Examples of letters to EPA Administrator Lisa Jackson include, but are not limited to, a joint letter from 21 Senators,
July 23, 2010, http://grassley.senate.gov/about/upload/Agriculture-07-23-10-dust-letter-to-EPA-signed-versiondoc.pdf; a joint letter from Senators Kent Conrad and Byron Dorgan and Representative Earl Pomeroy, August 5, 2010;
a joint letter from 75 House Members, September 27, 2010; and a joint letter from 99 House Members, March 29,
2011, http://fincher.house.gov/press-release/fincher-noem-call-epa-abandon-unreasonable-dust-standards.
33
See examples in footnote 6.
34
U.S. Environmental Protection Agency, “Release of Final Document Related to the Review of the National Ambient
Air Quality Standards for Particulate Matter,” 76 Federal Register 22665, April 22, 2011, http://www.epa.gov/ttn/
naaqs/standards/pm/data/20110419pmpafinal.pdf.
35
Letter from Dr. Jonathan M. Samet, Chair, Clean Air Scientific Advisory Committee, to the Honorable Lisa P.
Jackson, EPA Administrator. CASAC Review of Policy Assessment for the Review of the PM NAAQS—Second
External Review Draft, 2010. Available at http://yosemite.epa.gov/sab/sabproduct.nsf/
264cb1227d55e02c85257402007446a4/CCF9F4C0500C500F8525779D0073C593/$File/EPA-CASAC-10-015unsigned.pdf.
36
See joint letter from Representatives Fred Upton, Chairman, Committee on Energy and Commerce, Ed Whitfield,
Chairman, Subcommittee on Energy and Power, and Joe Barton, Chairman Emeritus, June 6, 2012,
http://energycommerce.house.gov/press-release/energy-and-commerce-leaders-urge-epa-protect-jobs-includingcurrent-pm-standards.
37
During the 112th Congress, the House passed the Farm Dust Regulation Prevention Act of 2011 (H.R. 1633), which
would have prohibited EPA from proposing, finalizing, implementing, or enforcing any regulation revising primary or
secondary NAAQS applicable to PM “with an aerodynamic diameter greater than 2.5 micrometers” for one year.
Further, the House-passed bill would have amended the CAA to exempt “nuisance dust” from the act and would have
excluded nuisance dust from references in the act to particulate matter “except with respect to geographic areas where
such dust is not regulated under state, tribal, or local law.” A general provision was also included in FY2012 Housereported EPA appropriations language (H.R. 2584, Title IV, Section 454) that would have restricted the use of FY2012
appropriations “to modify the national primary ambient air quality standard or the national secondary ambient air
quality standard applicable to coarse particulate matter (generally referred to as “PM10.”

Congressional Research Service

12

Environmental Regulation and Agriculture

National Ambient Air Quality Standards (NAAQS)—Ozone38
Under the CAA, EPA is to review the science for each of the NAAQS every five years, and either
reaffirm or revise the standard. The EPA Administrator completed a review of the ozone NAAQS
in March 2008, and made both the primary (health-based) and secondary (welfare-based)
standards more stringent, but he did not set the standards within the ranges recommended by the
independent panel of scientists that advises him (i.e., CASAC). He also rejected their advice to
change the form of the secondary standard to better measure whether ozone concentrations were
above levels needed to protect crops and forests from damage.39 Challenged in court, EPA agreed
to reconsider the March 2008 decisions (court decisions are discussed further below).

Status
On January 19, 2010, EPA proposed to strengthen the primary ozone NAAQS and to revise the
form of the secondary standard as the agency’s scientific advisers had recommended. Under the
proposed revisions, the vast majority of counties with ozone monitors would be found in
nonattainment of the primary standard, using the most recent available data, and many might
violate the secondary standard, as well.
EPA expected to promulgate a final version in late summer 2011, but on September 2, 2011, the
President requested that the agency withdraw its decision without promulgating it. Instead, the
agency will continue a review that it aims to complete by October 2015. EPA is also proposing
new monitoring requirements for the states, with more monitors to be placed in rural areas.40

Issues
EPA has resumed implementation of its 2008 ozone NAAQS, which affects few agricultural
areas. Despite the withdrawal of what would have been an even more stringent standard, air
quality is likely to improve as a result of regulations currently being phased in for cars, trucks,
and electric power plants, among other sources.
Ultimately, the 2015 ozone NAAQS revision could be one of the more significant regulations
promulgated by EPA, and could call attention to air quality problems in agricultural areas to a far
greater extent than previous standards.

CRS Contact
Jim McCarthy, Specialist in Environmental Policy, 7-...., [redacted]@crs.loc.gov.
38
For additional background on NAAQS, see the previously discussed “National Ambient Air Quality Standards
(NAAQS)—Particulate Matter” section.
39
The damage that crops and vegetation suffer from ozone exposure is cumulative over the growing season. In order to
better measure and provide protection against these impacts, EPA staff recommended a new seasonal (3-month)
average for the secondary standard that would cumulate hourly ozone exposures for the daily 12-hour daylight window.
Previously, the secondary standard simply measured the highest individual readings for any 8-hour period. CASAC
agreed with this recommendation.
40
For additional information on the proposed standards, see CRS Report R41062, Ozone Air Quality Standards: EPA’s
Proposed Revisions.

Congressional Research Service

13

Environmental Regulation and Agriculture

EPCRA and CERCLA Reporting Requirements
The Emergency Planning and Community Right-to-Know Act (EPCRA) and the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA, or Superfund) have
reporting requirements that are triggered when specified quantities of certain substances are
released to the environment, including ammonia and hydrogen sulfide. Both ammonia and
hydrogen sulfide are chemicals generated by livestock manure, particularly swine and poultry,
when in concentrated animal populations. Both CERCLA and EPCRA include citizen suit
provisions that have been successfully used to take legal action against poultry and swine
operations for violations of the reporting requirements of the laws. In 2005, a group of poultry
producers petitioned EPA for an exemption from EPCRA and CERCLA release reporting
requirements, arguing that releases from poultry growing operations pose little or no risk to
public health, while reporting imposes an undue burden on producers and government
responders.41

Status
In December 2008, EPA promulgated an EPCRA/CERCLA administrative reporting exemption
for air releases.42 The final rule exempts hazardous substance releases that are emitted to the air
from all livestock operations (not just poultry farms) from CERCLA’s requirement to report
releases to the air to federal officials. It provides a partial exemption for such releases from
EPCRA’s requirement to report releases to state and local emergency officials: the final rule
continues to apply EPCRA’s reporting requirement to large CAFOs (those subject to Clean Water
Act permitting, discussed below in the section on “Implementation of Existing Clean Water Act
Permit Requirements for CAFOs”), but it exempts smaller facilities. The reporting exemptions in
the final rule took effect January 20, 2009.
The 2008 rule was challenged by industry groups, including the National Pork Producers Council,
as well as environmental advocates. Industry argued that CAFOs should be exempted from all
reporting under Superfund and EPCRA because air emissions from animal feeding operations
pose no threat to public health or the environment. Environmentalists also went to court, arguing
that CAFOs should report under both laws because air emissions from animal feedings operations
do pose a public health and environmental risk. The legal challenges were consolidated in the
U.S. Court of Appeals for the District of Columbia (Waterkeeper Alliance v. EPA, D.C. Cir., No.
09-1017). In June 2010 the government asked the court to remand the 2008 rule for
reconsideration and possible modification. The court approved the government’s request in
October 2010. EPA anticipates proposing a new or revised rule, but a schedule for doing so is
uncertain, and a rule has not been proposed. In the meantime, the 2008 exemption rule remains in
effect. According to press reports, EPA does not plan to directly regulate air emissions from
animal feeding operations, but is seeking to require their reporting.
Legislation was introduced in the 112th Congress to exclude “manure” from the definition of
hazardous substance under CERCLA and to remove reporting liability under CERCLA and
41

For additional information, see CRS Report RL33691, Animal Waste and Hazardous Substances: Current Laws and
Legislative Issues.
42
U.S. Environmental Protection Agency, “CERCLA/EPCRA Administrative Reporting Exemption for Air Releases,”
73 Federal Register 76948-76960, December 18, 2008.

Congressional Research Service

14

Environmental Regulation and Agriculture

EPCRA (H.R. 2997 and S. 1729), but no further action occurred. Proponents of the legislation
argue that Congress did not intend either of these laws to apply to agriculture and that
enforcement and regulatory mechanisms under other laws are adequate to address environmental
releases from animal agriculture. Opponents respond that enacting an exemption would severely
hamper the ability of government and citizens to know about and respond to releases of
hazardous substances caused by an animal agriculture operation. No similar legislation has been
introduced in the 113th Congress.

Issues
The agriculture industry remains concerned about the potential burden on large CAFOs of
complying with the EPCRA reporting requirements, even though the final rule exempted facilities
that are not subject to Clean Water Act permitting (see “Implementation of Existing Clean Water
Act Permit Requirements for CAFOs,” below). Critics of the 2008 rule, including
environmentalists and some state air quality officials, contend that the CERCLA and EPCRA
reports provide good information about emissions that enable citizens to hold companies
accountable in terms of how toxic chemicals are managed. Similarly, the agriculture industry is
concerned about potential liability that could arise for animal operations if manure were to be
defined as a “hazardous substance.”

CRS Contact
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

Water
The release of sediment, nutrients, pathogens, and pesticides from agricultural production can
degrade the quality of water resources. While it is widely believed that agriculture can have a
significant impact on water quality, there is no comprehensive national study of agriculture’s
effect on water quality.43 Several water quality assessments document degradation from
agriculture practices; however, the extent and magnitude is difficult to measure because of its
nonpoint nature.44 Federal environmental laws, such as the Clean Water Act (CWA), largely do
not regulate agricultural actors, in many cases giving the regulatory responsibilities to the states.

43

Marc Ribaudo and Robert Johansson, Agricultural Resources and Environmental Indicators, 2006 Edition, USDA,
ERS, Economic Information Bulletin No. (EIB-16), Washington, DC, July 2006, p. 2.2, http://www.ers.usda.gov/
publications/AREI/EIB16/Chapter2/2.2/. Periodically EPA conducts a National Water Quality Inventory that provides
a general water quality assessment based on state collected data. The information for the EPA Inventory is for a
relatively small subset of the nation’s total waters that are assessed by states and does not represent the waterbodies that
were not assessed. For additional information, see EPA, National Water Quality Inventory: Report to Congress, 2004
Reporting Cycle, EPA 841-R-08-001, Washington, DC, January 2009, http://water.epa.gov/lawsregs/guidance/cwa/
305b/2004report_index.cfm.
44
Nonpoint source pollution generally refers to diffuse runoff from farms, ranches, forests and urban areas. Nonpoint
sources are also subject to natural variability (e.g., weather related events) and depend on many site-specific conditions,
such as topography, soil type, and climate.

Congressional Research Service

15

Environmental Regulation and Agriculture

Constraints on agricultural production to reduce pollution discharges typically arise at the state
level in response to local concerns.45
The following section covers five regulations relating to water, including
•

implementation of existing Clean Water Act permit requirements for CAFOs;

•

Chesapeake Bay protection and restoration;

•

Florida nutrient water quality standards;

•

defining “waters of the United States” for CWA regulatory purposes; and

•

spill prevention control and countermeasure (SPCC) plans.

Implementation of Existing Clean Water Act Permit Requirements
for CAFOs
Under the CWA, while most of agriculture is exempt from federal regulation, large CAFOs are
defined as point sources and thus are subject to the act’s prohibition against discharging pollutants
into U.S. waters without a permit. In October 2008, EPA issued a regulation to revise a 2003
CWA rule governing waste discharges from CAFOs. This action was necessitated by a 2005
federal court decision (Waterkeeper Alliance et al. v. EPA, 399 F.3d 486 (2nd Cir. 2005)), resulting
from challenges brought by agriculture industry groups and environmental advocacy groups that
vacated parts of the 2003 rule and remanded other parts to EPA for clarification.46 The 2008 rule
details requirements for permits, annual reports, and development of plans for handling manure
and wastewater. Parts of the rule are intended to control land application of manure and
agricultural wastewater.

Status
According to EPA, the 2008 rule applies to about 15,300 CAFOs that need permit coverage (74%
of the 20,700 CAFOs operating in 2008).47 Under the rule, CAFOs were to obtain permits and
develop and implement nutrient management plans by February 27, 2009.
Further legal challenges followed promulgation of the 2008 revised rule. Agricultural industry
groups (although generally satisfied with the rule) filed lawsuits in several federal appellate
circuits. Environmental groups also brought a legal challenge to the rule. The various petitions
were consolidated in the U.S. Court of Appeals for the 5th Circuit. In addition, EPA officials
discussed with environmental plaintiffs possible settlement of portions of the litigation that could
involve additional regulatory changes. In December 2009, the court agreed to a joint request from
45

Much of the federal response to water quality concerns for agriculture is primarily voluntary and incentive-based.
U.S. Environmental Protection Agency, “Revised National Pollutant Discharge Elimination System Permit
Regulation and Effluent Limitations Guidelines for Concentrated Animal Feeding Operations in Response to the
Waterkeeper Decision, Final Rule,” 73 Federal Register 225, November 20, 2008, pp. 70417-70486. For additional
information on EPA’s response to the court decision, see CRS Report RL33656, Animal Waste and Water Quality:
EPA’s Response to the Waterkeeper Alliance Court Decision on Regulation of CAFOs.
47
The rule specifies thresholds above which permits are required, such as animal feeding operations that stable or
confine more than 700 dairy cows, 2,500 swine weighing 55 pounds or more, or 500 horses.
46

Congressional Research Service

16

Environmental Regulation and Agriculture

EPA and environmentalists to sever the activists’ portion of the litigation. In settling with
environmental plaintiffs, EPA agreed to issue guidance aimed at clarifying what CAFOs must do
to comply with federal clean water regulations and to help CAFO owners determine whether they
need permits; the guidance was issued in May 2010.48
In settling that part of the lawsuit, EPA also agreed to propose a rule within one year to collect
facility information from all CAFOs, such as number of types of animals, type and capacity of
manure storage or treatment process, and quantity of manure generated annually by the CAFO, in
order to provide a CAFO inventory and assist in implementing the 2008 rule. In October 2011,
EPA proposed a rule, referred to as the CAFO reporting rule, that would require CAFOs to submit
a specific set of basic operational information to EPA.49 The proposal would require CAFOs to
provide the following basic information: facility contact information; production area location;
whether the CAFO has a CWA permit; the number and type of animals at the CAFO; and the
number of acres available for land application of manure, litter, and process wastewater. The
proposed rule drew criticism from industry groups who contend that the agency lacks legal
authority to require CAFOs that do not discharge to report facility information. Environmental
advocates defended EPA’s authority to require non-discharging CAFOs to report, but they said
that the proposed rule fell short of what is required of EPA under the 2009 settlement agreement
that forced the reporting rule.
In July 2012, after reviewing public comments, EPA decided not to promulgate a regulation.
Based on comments and responses, especially from states, EPA concluded that it can obtain much
of the desired CAFO information from federal agencies, states, and other existing data sources. It
would be more reasonable and efficient to obtain existing information from these sources, EPA
said, before determining whether to issue a rule requiring CAFOs to submit information. The
agency noted that the 2010 settlement agreement with environmental groups committed EPA to
proposing a rule, but did not commit it to any particular final action.50
The challenge to the 2008 CAFO rule by agricultural industry groups continued, even after EPA’s
settlement with environmental plaintiffs. In 2011, a federal court issued a ruling that supported
industry’s challenge on several issues. The court upheld the portion of the rule requiring a CAFO
to apply for a permit if the facility has an actual discharge. However, the court vacated aspects of
the rule requiring permits for proposed discharges (permits are still required for CAFOs that
actually discharge) and allowing EPA to take enforcement action against CAFO owners based on
their failure to apply for permits.51 In July 2012, EPA modified the 2008 CAFO regulations to
conform to the court’s 2011 ruling.

48

U.S. Environmental Protection Agency, Implementation Guidance on CAFO Regulations - CAFOS That Discharge
or Are Proposing to Discharge, EPA-833-R-10-006, May 27, 2010, http://www.epa.gov/npdes/pubs/
cafo_implementation_guidance.pdf.
49
U.S. Environmental Protection Agency, “National Pollutant Discharge Elimination System (NPDES) Concentrated
Animal Feeding Operation (CAFO) Reporting Rule; Proposed rule,” 76 Federal Register 65431-65458, October 21,
2011.
50
U.S. Environmental Protection Agency, “National Pollutant Discharge Elimination System (NPDES) Concentrated
Animal Feeding Operation (CAFO) Reporting Rule; Proposed Rule; Withdrawal,” 77 Federal Register 42679-42682,
July 20, 2012.
51
National Pork Producers Council v. U.S. EPA, 635 F.3d 738 (5th Cir. 2011).

Congressional Research Service

17

Environmental Regulation and Agriculture

Issues
The rest of the 2008 rule was not affected by the court’s March 2011 ruling and remains in effect.
The federal government did not seek a rehearing on the Fifth Circuit’s ruling, nor did it petition
the Supreme Court for a review. EPA concluded that the court’s ruling effectively simplifies
permitting by removing uncertainty about the “duty to apply” for a permit and thus is largely selfimplementing. The agency has conducted outreach to states on the effect of the ruling and is in
the process of revising the guidance that it issued in May 2010 concerning CAFOs that discharge
or propose to discharge, in view of the ruling.
A number of questions linger about implementation of the 2008 rule. For example, agricultural
industry groups are concerned that EPA regions may be providing differing interpretations of a
provision of the 2008 rule that allows farms to self-certify that they will not discharge, a finding
that allows them to avoid having to apply for a permit and protects CAFOs from liability for not
having a permit in the event of an accidental discharge. Some agricultural industry groups also
are concerned that EPA could initiate a new rulemaking that would include additional permit and
pathogen control requirements.
Separate from the 2008 CAFO rule that applies nationally, EPA is developing new CWA
requirements for CAFOs located in the Chesapeake Bay watershed (see “Chesapeake Bay
Protection and Restoration,” below), which could expand the universe of regulated CAFOs in that
region and require more stringent standards for permits. Many in the agriculture sector were
concerned that these Chesapeake Bay-specific rules would be the basis for EPA to propose a
revision of the broader 2008 rule. In fact, under the 2010 settlement agreement with
environmental groups, EPA had agreed to propose changes to the national rule, but in June 2013,
EPA and the environmental parties modified the 2010 agreement. Under the modification, EPA
will decide by June 2018 whether a national rulemaking is needed.

CRS Contact
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

Chesapeake Bay Protection and Restoration
Despite several decades of activity by governments, the private sector, and the general public,
efforts to improve and protect the Chesapeake Bay watershed have been insufficient to meet
restoration goals. Although some specific indicators of Bay health have improved slightly or
remained steady (such as blue crabs and underwater bay grasses), others remain at low levels of
improvement, especially water quality. Overall, the Bay and its tributaries remain in poor health,
with polluted water, reduced populations of fish and shellfish, and degraded habitat and
resources. The primary pollutants causing impairments are nutrients (nitrogen and phosphorus)
and sediment discharged from multiple urban, suburban, and rural sources around the Bay.
In May 2009, President Obama issued an executive order that declared the Bay a “national
treasure” and charged the federal government with assuming a strong leadership role in restoring

Congressional Research Service

18

Environmental Regulation and Agriculture

the Bay.52 The executive order established a Federal Leadership Committee for the Chesapeake
Bay to develop and implement a new strategy for protecting and restoring the Chesapeake region.
The resulting strategy, which was released in May 2010, launched major specific environmental
initiatives to establish new clean water regulations on stormwater discharges and pollution
discharges from animal feedlots in the Bay watershed, put new agricultural conservation practices
on farms in the region, and restore land and water habitat.53
According to EPA, agriculture represents the single largest source of nutrient and sediment
pollution to the Bay, with about half of agriculture’s pollutant load directly related to livestock
waste. Agriculture covers about 25% of the Bay watershed, and is the largest intensively managed
land use in the watershed. EPA believes that excess livestock waste, improperly applied
fertilizers, and certain cropland tillage practices increase nutrient and sediment discharges to the
Bay.
A central feature of the overall strategy for restoring the Bay is EPA’s establishment of a total
maximum daily load (TMDL). Section 303 of the CWA requires states to identify waters that are
impaired by pollution, even after application of pollution controls. For those waters, states must
establish a TMDL to ensure that water quality standards can be attained. A TMDL is essentially a
pollution budget, a quantitative estimate of what it takes to achieve standards, setting the
maximum amount of pollution that a waterbody can receive without violating standards. If a state
fails to do this, EPA is required by the CWA to make its own TMDL determination for the state.
Throughout the United States—including the Chesapeake Bay watershed—more than 20,000
waterways are known to be violating applicable water quality standards and to require a TMDL.54
Lawsuits have been brought with the intention of pressuring EPA and states to develop TMDLs,
including for the Chesapeake Bay because the waters of the Bay have been identified as being
impaired, that is, as not meeting applicable water quality standards. The Chesapeake Bay TMDL
is the largest single TMDL developed to date. It addresses all segments of the Bay and its tidal
tributaries that are impaired from discharges of nitrogen, phosphorus, and sediment. The goal is to
have TMDL implementation measures in place by 2025 to assure attainment and maintenance of
all applicable water quality standards. The TMDL allocates needed reductions of these pollutants
to all jurisdictions in the 64,000 square mile watershed, not to individual segments of streams or
waterbodies, as is more typical of other TMDLs prepared by states or EPA.55
As part of the TMDL development process, states are to prepare Watershed Implementation Plans
(WIPs) identifying specific reductions and control measures to achieve needed pollutant
reductions from point sources (i.e., industrial and municipal facilities and CAFOs) and nonpoint
sources (i.e., farms and forests), as well as two-year milestones to implement the plans. EPA fully
expects that states will meet commitments and milestones in the WIPs, but the agency also has
identified a number of potential actions currently available to it if a state fails to do so, including
expanding permit coverage to currently unregulated sources (which could include additional
CAFOs in the Chesapeake Bay watershed), requiring net improvement offsets, conditioning EPA
grants, or increasing federal enforcement in the watershed.
52
Executive Order 13508, “Chesapeake Bay Protection and Restoration,” 74 Federal Register 23099-23104, May 15,
2009.
53
For information, see http://www.chesapeakebay.net/news_federalstrategy.aspx?menuitem=51207.
54
For background information, see CRS Report R42752, Clean Water Act and Pollutant Total Maximum Daily Loads
(TMDLs).
55
For information on the TMDL, see http://www.epa.gov/chesapeakebaytmdl/.

Congressional Research Service

19

Environmental Regulation and Agriculture

Status
Under a consent decree resolving some of the litigation over the Chesapeake Bay,56 EPA was
required to establish a TMDL no later than May 1, 2011. EPA issued the TMDL on December 29,
2010—ahead of its self-imposed December 31 deadline.57
Concurrent with issuance of the TMDL, the Bay watershed jurisdictions (Virginia, Maryland,
West Virginia, Delaware, Pennsylvania, and the District of Columbia) prepared Phase I WIPs,
which outlined the types of controls and best management practices (BMPs) that will be utilized
to achieve the first major goal of the TMDL: that 60% of needed practices to achieve water
quality standards will be in place by 2017. The jurisdictions have now developed Phase II WIPs,
in which they describe how they will work with specific localities within their borders over the
next five years to reduce nitrogen, phosphorus, and sediment loading into streams, lakes, and
rivers that feed into the Bay.
The Bay region exceeded its overall nutrient and sediment reduction goals for 2012-2013,
according to data submitted by states to EPA in March 2014. From 2009 through 2013, states
reduced the amount of nitrogen reaching Chesapeake Bay by 17 million pounds—4 million
pounds more than they had committed to. Phosphorus reductions were also ahead of schedule.
However, according to the data, reductions from agriculture and stormwater—two sectors where
controls have long proven problematic—are not on a trajectory that would meet either a 2017
interim cleanup goal or the overall Bay goals for 2025, suggesting that control measures for these
sectors will need to be accelerated.
In the same consent decree that led to issuance of the Bay TMDL, EPA also agreed to revise CWA
permit rules for CAFOs located in the Chesapeake Bay watershed (see “Implementation of
Existing Clean Water Act Permit Requirements for CAFOs,” above). As part of the settlement,
EPA agreed to propose Bay-specific rules to expand the universe of regulated CAFOs, including
but not limited to designating an AFO as a CAFO or increasing the number of animal operations
that would qualify as CAFOs and thus require CWA permits. The settlement also stipulates that
EPA would propose more stringent permitting requirements for land application of manure, litter,
and process wastewater in the Bay watershed in 2013, with rules to be final by mid-2014.
However, in June 2013, EPA and the environmental groups announced a revised agreement.
Under the modification, EPA will review compliance with existing CWA permits for CAFOs in
the Chesapeake Bay watershed, assess state permitting programs for such operations, and inspect
smaller, unregulated animal feedlots in the Bay watershed. On the basis of these reviews, EPA
will decide by June 30, 2018, whether a national rulemaking is needed. As described above, under
the earlier settlement agreement, EPA was to propose revisions to the 2008 national CAFO rules,
but under the 2013 modification, EPA will first focus on pollution from CAFOs in the
Chesapeake Bay region.

56

Fowler v. U.S. EPA, Case No. 1:09-CV-00005-CKK (D.D.C.), May 10, 2010.
Notice of the TMDL appeared in the Federal Register January 5, 2011. U.S. Environmental Protection Agency,
“Clean Water Act Section 303(d): Notice for the Establishment of the Total Maximum Daily Load (TMDL) for the
Chesapeake Bay,” 76 Federal Register 549-550, January 5, 2011.
57

Congressional Research Service

20

Environmental Regulation and Agriculture

Issues
EPA’s TMDL plans and the overall federal Bay restoration strategy under the 2009 executive
order are controversial with agricultural and other groups that are concerned about the likely
mandatory nature of many of EPA’s and states’ upcoming actions. Agricultural interests are
concerned that farm operations in the Bay watershed will be subject to more regulation than
competitors in other states, putting their operations at a significant competitive disadvantage.
Many of these groups have also been concerned that the underlying scientific data and modeling
used by EPA to develop the TMDL do not fully reflect ongoing voluntary efforts by agriculture to
reduce pollutant discharges. Legal challenges to the TMDL were brought by the American Farm
Bureau Federation and home builder groups, who argue that, in setting pollution limits in the
multistate plan, EPA has exceeded its CWA authority. In September 2013, a federal court upheld
the TMDL. The court said that it found no evidence that EPA had intruded on states’ rights in
writing the plan.58 That ruling has been appealed. On the other hand, environmental activists in
particular are pleased that the federal government is now asserting a leadership role to restore the
Bay and have supported legislation that would codify requirements for the Bay TMDL in the
CWA, while authorizing grants and other assistance for implementing required measures.
Companion bills to do so were introduced in the 111th Congress, while the House Agriculture
Committee approved separate legislation (H.R. 5509) that would have authorized an expanded
role for USDA in Bay restoration.
The 112th Congress showed interest in early implementation of the TMDL, especially impacts on
agriculture. The House Agriculture Subcommittee on Conservation, Energy, and Forestry held
oversight hearings on March 16 and November 3, 2011. Legislation (H.R. 4153, similar to H.R.
5509 in the 111th Congress) was introduced that would give states, not EPA, authority to set
nutrient and sediment limits for the Bay and would increase USDA’s role in Bay restoration. No
legislation was enacted, and similar legislation has not been introduced in the 113th Congress.

CRS Contact
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

Florida Nutrient Water Quality Standards
The CWA directs states to adopt water quality standards for their waters and authorizes EPA to
promulgate new or revised standards if a state’s actions fail to meet CWA requirements. Water
quality standards consist of designated uses, criteria to protect the designated uses, and an
antidegradation statement. They serve as the framework for pollution control measures that are
specified for individual sources by states.
Because of severe water quality impairment of Florida waters by nutrients (nitrogen and
phosphorus) from diverse sources, including agriculture and livestock, municipal and industrial
wastewater discharges, and urban stormwater runoff, EPA determined in 2009 that Florida’s
existing narrative water quality standards for nutrients must be revised in the form of numeric
criteria that will enable Florida to better control nutrient pollution. In 2009 EPA entered into a
58

American Farm Bureau Federation v. EPA, M.D. Pa., No. 11-00067, 43 ELR 20213, Sept. 13, 2013.

Congressional Research Service

21

Environmental Regulation and Agriculture

consent decree with environmental litigants requiring the agency to promulgate numeric nutrient
water quality standards for Florida. To meet the legal deadline, EPA issued the first phase of these
standards on November 15, 2010, establishing standards for lakes and flowing waters in the state.
The EPA rule did not establish any requirements directly applicable to regulated entities or other
sources of nutrient pollution. Water quality standards do not have the force of law until the state
translates them into permit limits or otherwise imposes pollution control requirements on
dischargers in the state.59

Status
EPA said all along that it prefers that Florida implement its own numeric nutrient water quality
criteria. Consequently, EPA delayed the effective date of the 2010 rule several times to allow the
state to complete its process and to avoid confusion that could occur if federal criteria became
effective while state criteria are being reviewed. Further, EPA’s deadline for issuing the second
phase of standards (for estuaries, coastal waters, and flowing waters in the South Florida Region)
also was extended several times to allow the state to develop its own standards.
In March 2013, EPA and the state reached agreement on steps to put the state in charge of
determining numeric limits on nutrient pollution in Florida waterways. Groundwork for the
agreement was laid in November 2012 when EPA approved a June 2012 submission by the state
for lakes, rivers, streams, and some estuaries. Under the March agreement, Florida pledged to
move forward with rulemaking and legislation to complete the job of setting numeric nutrient
criteria for Florida waterways. The proposed state legislation would require completion of
nutrient criteria rulemaking for remaining coastal and estuarine waters by December 1, 2014, and
establishment of interim nutrient standards until then. In response to the state’s actions, EPA
approved the state’s implementation plan for controlling nutrient pollution in Florida waters and
petitioned the federal court in Florida to allow it to approve the state’s water quality standards,
although they lack numeric criteria for all waters. In January 2014, the court agreed to amend the
2009 consent decree in light of the adoption of new nutrient criteria, thus lifting the requirement
for EPA to issue numeric nutrient standards under the second phase of rulemaking, and in April
EPA proposed to withdraw its numeric nutrient criteria for Florida waters.
Industry groups endorsed the agreement and the court’s modification of the consent decree.
However, it was criticized by environmental advocacy groups, who said that the plan lacks many
elements that EPA previously said were essential and fails to cover large portions of the state’s
waters by, for example, exempting tidal waters, marine lakes, and flowing waters in the southern
portion of the state, unless they are being used for “frequent recreation.” Environmental groups’
legal challenge to the plan was rejected by the court’s January 2014 ruling, but the groups have
appealed the ruling.

Issues
While few dispute the need to reduce nutrients in Florida’s waters, EPA’s rule has been
controversial, involving disputes about the data underlying the proposal, potential costs of
complying with numeric standards when they are incorporated into discharge permit limitations,
59

U.S. Environmental Protection Agency, “Water Quality Standards for the State of Florida’s Lakes and Flowing
Waters; Final Rule,” 75 Federal Register 75762-75807, December 5, 2010.

Congressional Research Service

22

Environmental Regulation and Agriculture

and disputes over administrative flexibility. Agricultural groups and others fear that numeric
standards will result in mandates for costly pollution controls. EPA responds that adoption of
numeric nutrient standards is intended to ensure the health of Florida’s waterways and its
economy, because the types of water quality problems associated with nutrients—algae blooms
that are toxic to humans, fish, and animals—have economic impacts throughout the state.
Some groups also fear that EPA’s actions in Florida, which represented the first time that EPA has
established statewide numeric nutrient standards, and even though now apparently resolved, will
be a precedent for similar regulatory action elsewhere. For example, environmental advocacy
groups have petitioned or filed lawsuits seeking to require EPA to establish numeric nutrient
water quality standards in Kansas and for the Mississippi River Basin.60 In testimony before the
House Agriculture Committee, the EPA Administrator stated that EPA is not working on any
federal numeric nutrient limits, and the agency has developed guidance for its regional offices
stating that addressing nutrient pollution is a problem best handled by states through a variety of
tools.61
These issues also have drawn Congress’s attention. In 2011, oversight hearings were held by
subcommittees of the House Energy and Commerce and Transportation and Infrastructure
committees. A bill in the 113th Congress (H.R. 1948) would restrict EPA’s oversight of state
water quality standards by allowing the agency to promulgate a water quality standard for a state
only if EPA has previously approved the state’s standard and the state concurs that a new or
revised standard is necessary. Similar legislation passed the House in the 112th Congress. Even
with EPA’s approval of Florida’s rules, controversies persist.

CRS Contact
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

Defining “Waters of the United States”
How best to protect the nation’s remaining wetlands and regulate activities taking place in or
affecting wetlands has become one of the most contentious environmental policy issues. Much of
the debate has focused on the CWA, which contains a key wetlands regulatory tool, Section 404,
which requires landowners or developers to obtain permits for disposal of dredged or fill material
that is generated by construction or similar activity into navigable waters of the United States,
including wetlands. A key issue since Section 404 was enacted in 1972 is which waters are
determined to be “waters of the United States” for CWA purposes and thus are subject to Section
404 and all of the CWA’s other requirements. In 2001 and 2006, the Supreme Court issued rulings
in two cases that interpreted the regulatory scope of the CWA more narrowly than previously, but
created uncertainty about the precise effect of the Court’s decisions.
60
In 2011, EPA denied the petition requesting that EPA promulgate national numeric nutrient criteria for the United
States or, alternatively, for waters of the Mississippi-Atchafalaya River Basin and northern Gulf of Mexico, saying,
“We do not believe that the comprehensive use of federal rulemaking authority is the most effective or practical means
of addressing these concerns at this time.” Environmental groups have filed a lawsuit seeking to force EPA to issue
numeric nutrient criteria, as they sought in the earlier petition.
61
“EPA Nutrient Reduction Framework Urges States to Develop Plan, Schedule for Criteria,” Daily Environment
Report, March 17, 2011, p. A-16.

Congressional Research Service

23

Environmental Regulation and Agriculture

The George W. Bush and Obama administrations both attempted to lessen confusion over the
Court’s rulings for the regulated community, regulators, and the general public by issuing
guidance documents to identify, in light of the Court’s rulings, categories of waters that are
jurisdictional, categories that are not jurisdictional, and categories that require a case-specific
analysis to determine if CWA jurisdiction applies. But the non-binding guidance documents did
not resolve all questions. In an effort to do so, in March 2014, EPA and the Army Corps of
Engineers (Corps) jointly proposed a rule defining the scope of waters protected under the
CWA.62 The proposed rule would revise regulations that have been in place for more than 25
years. It is particularly focused on clarifying the regulatory status of waters located in isolated
places in a landscape, as well as small streams, rivers that flow for part of the years, and nearby
wetlands—the types of waters affected by the Supreme Court’s 2001 and 2006 rulings. In
developing the proposed rule, EPA and the Corps relied on a draft synthesis of more than 1,000
published and peer-reviewed scientific reports. EPA has asked its Science Advisory Board (SAB)
to review the draft synthesis, and the agencies will not issue a final rule before the SAB
completes its work.
The agencies believe that, while the proposed rule would enlarge CWA jurisdiction beyond that
under existing EPA-Corps guidance, which the agencies believe was narrower than is justified by
science and the law, they contend that it would not enlarge jurisdiction beyond what is consistent
with the Supreme Court’s narrow reading of jurisdiction.
In 1977, Congress amended the CWA to exempt normal farming, ranching, and silviculture
activities from Section 404. The act also exempts agricultural stormwater discharges and return
flows from irrigated agriculture from Section 404 and other permit requirements of the law.
Further, prior converted cropland is excluded from the definition of “waters of the United States”
by rule. All of these exemptions and exclusions are self-implementing. Nothing in the 2014
proposed rule changes the existing statutory and regulatory exemptions. In addition, simultaneous
with proposing the rule, EPA and the Corps issued an interpretive rule that identifies 56
conservation practices approved by the U.S. Department of Agriculture that additionally qualify
for exemption under the Section 404 exclusion of “normal farming” activities. Through this
interpretive rule, the agencies intend to resolve uncertainties about “normal farming” activities
that are exempt from permitting when these conservation practices are used. In other words,
effective immediately, producers who utilize any of the 56 identified practices according to
USDA technical standards need not seek a determination of CWA jurisdiction and need not seek a
CWA permit. The three agencies also have signed a Memorandum of Understanding detailing
implementation of the interpretive rule and identifying a process for reviewing and updating the
list of qualifying conservation practices.63

Status
The Corps and EPA are accepting public comment on the proposed rule until October 20, 2014.64
Although the EPA-Corps interpretive rule on agricultural conservation practices took effect on
62

Department of Defense, Department of the Army, Corps of Engineers, and Environmental Protection Agency,
“Definition of ‘Waters of the United States’ Under the Clean Water Act, Proposed Rule,” 79 Federal Register
22188022274, April 21, 2014.
63
For additional information, see CRS Report R43455, EPA and the Army Corps’ Proposed Rule to Define “Waters of
the United States”, by (name redacted).
64
U.S. Environmental Protection Agency, Clean Water Act Definition of “Waters of the U.S.”, http://water.epa.gov/
(continued...)

Congressional Research Service

24

Environmental Regulation and Agriculture

March 25, the agencies are accepting public comment until July 7, 2014.65 The EPA Administrator
stated at a congressional hearing that it generally takes about one year to finalize a rule. Complex
and controversial rules can take much longer from proposal to promulgation. Once a rule is
finalized, legal challenges are likely, possibly delaying implementation of any rule for years.

Issues
The agriculture sector has been vigorous in criticizing and challenging EPA regulatory actions
that may affect the sector’s operations, making potential impacts of the proposed rule on
agriculture a focus of controversy—although the rule’s potential impacts are not limited to
agriculture. One of the sector’s concerns about a new “waters of the United States” rule has been
whether it would modify existing statutory and regulatory exemptions that exclude certain
discharges resulting from agricultural activities from CWA permitting. As described above, the
proposed rule makes no change and does not affect or alter these exemptions. The interpretive
rule was intended to clarify the types of agricultural conservation practices that are exempt from
Section 404, but some in agriculture contend that it has created confusion and uncertainty.

CRS Contact
(name redacted), Specialist in Resources and Environmental Policy, 7-....,
[redacted]@crs.loc.gov.

Spill Prevention, Control, and Countermeasure (SPCC) Plans
The CWA mandated regulations to prevent the discharge of oil from various sources.66 Pursuant
to this statutory requirement,67 EPA crafted regulations for non-transportation-related facilities in
1973. Affected facilities must prepare and implement, but not submit,68 spill prevention control
and countermeasure (SPCC) plans.69 The EPA SPCC plan requirements apply to nontransportation-related facilities that drill, produce, store, process, refine, transfer, distribute, use,
or consume oil or oil products;70 and that could reasonably be expected to discharge oil to U.S.
navigable waters or adjoining shorelines.71 Facilities, including farms,72 are subject to the rule if
(...continued)
lawsregs/guidance/wetlands/CWAwaters.cfm.
65
Department of Defense, Department of the Army, Corps of Engineers, and Environmental Protection Agency,
“Notice of Availability Regarding the Exemption From Permitting Under Section 404(f)(1)(A) of the Clean Water Act
to Certain Agricultural Conservation Practices,” 79 Federal Register 22276, April 21, 2014. Comment period extension
may be found here: http://water.epa.gov/lawsregs/guidance/wetlands/CWAwaters.cfm.
66
Section 311(j)(1) of CWA.
67
And in accordance with Executive Order 11735 (August 3, 1973), granting EPA the authority to regulate nontransportation-related onshore and offshore facilities.
68
A subset of high-risk facilities must submit Facility Response Plans to EPA (40 CFR §112.20)
69
U.S. Environmental Protection Agency, “Oil Pollution Prevention: Non-Transportation Related Onshore and
Offshore Facilities,” Federal Register, vol. 38, no. 237 (December 11, 1973), pp. 34164-34170.
70
Per EPA SPCC regulations, “oil,” means oil of any kind or in any form, including, but not limited to: petroleum; fuel
oil; sludge; oil refuse; oil mixed with wastes other than dredged spoil; fats, oils or greases of animal, fish, or marine
mammal origin; vegetable oils, including oil from seeds, nuts, fruits, or kernels; and other oils and greases, including
synthetic oils and mineral oils (40 C.F.R. §112.2).
71
Some of the definitions for the terms used to determine SPCC applicability may be subject to interpretation. For
(continued...)

Congressional Research Service

25

Environmental Regulation and Agriculture

they meet at least one of the following capacity thresholds: an aboveground aggregate oil storage
capacity greater than 1,320 U.S. gallons,73 or a completely buried oil storage capacity greater than
42,000 U.S. gallons.
Among other obligations, SPCC regulations require secondary containment (e.g., dikes or berms)
for certain oil-storage units; and plans must be certified by a professional engineer unless a
facility owner/operator is able to self-certify the plan.

Status
Following the passage of the Oil Pollution Act of 1990,74 EPA proposed changes and
clarifications to the SPCC regulations that were made final in July 2002.75 EPA has both extended
the 2002 rule’s compliance date (on multiple occasions) and made further amendments to the
2002 rule.76 For most types of facilities subject to SPCC requirements, the deadline for complying
with the changes made in 2002 was November 10, 2011.77 However, EPA extended the
compliance date for farms78 to May 10, 2013.79 On March 26, 2013, Congress enacted P.L. 1136, which prohibited EPA from using appropriations to enforce SPCC provisions at farms for 180
days after enactment (i.e., through September 22, 2013).
Note that the July 2002 final rule and subsequent amendments did not alter the requirement for
owners or operators of facilities, including farms, to maintain and to continue implementing their
SPCC plans in accordance with the SPCC regulations in effect before the 2002 rulemaking.

Issues
Many of the recent SPCC issues have involved program scope and applicability: which facilities,
materials, and equipment should be subject to SPCC requirements. These issues have garnered
considerable attention in the 113th Congress,80 ultimately resulting in enacted legislation that
alters the applicability for farms subject to the SPCC regulations.
(...continued)
example, the definition of “navigable waters” has been a subject of debate and litigation in recent years. See CRS
Report RL33263, The Wetlands Coverage of the Clean Water Act (CWA): Rapanos and Beyond.
72
Although the definition of facility does not specifically mention farms, farms are explicitly defined as “a facility on a
tract of land devoted to the production of crops or raising of animals, including fish, which produced and sold, or
normally would have produced and sold, $1,000 or more of agricultural products during a year.” See 40 C.F.R. §112.2.
73
Only counting containers greater than 55 gallons. 40 C.F.R. §112.1(d).
74
P.L. 101-380; 33 U.S.C. §2701 et seq.
75
U.S. Environmental Protection Agency, “Oil Pollution Prevention and Response; Non-Transportation-Related
Onshore and Offshore Facilities: Final Rule,” 67 Federal Register 47041, July 17, 2002.
76
These actions were, at least in part, related to legal challenges that followed the 2002 final rule.
77
U.S. Environmental Protection Agency, “Oil Pollution Prevention; Spill Prevention, Control, and Countermeasure
Rule Compliance Date Amendment,” 75 Federal Register 63093, October 14, 2010.
78
Defined as “a facility on a tract of land devoted to the production of crops or raising of animals, including fish, which
produced and sold, or normally would have produced and sold, $1,000 or more of agricultural products during a year”
(40 CFR §112.2).
79
U.S. Environmental Protection Agency, “Oil Pollution Prevention: Spill Prevention, Control, and Countermeasure
Rule—Compliance Date Amendment for Farms,” 76 Federal Register 72120, November 22, 2011.
80
For further details, see CRS Report R43306, Spill Prevention, Control, and Countermeasure (SPCC) Regulations:
(continued...)

Congressional Research Service

26

Environmental Regulation and Agriculture

On June 10, 2014, the President signed the Water Resources Reform and Development Act
(WRDA) of 2014 (P.L. 113-121). Section 1048 of the act alters the applicability of the SPCC.
Selected changes include the following:
•

Farms with an aggregate aboveground storage capacity less than 2,500 gallons
are not subject to SPCC regulations;

•

Farms with an aggregate aboveground storage capacity less than 6,000 gallons
(or a to-be-determined lower threshold) and no reportable discharge history are
not subject to SPCC regulations;

•

Farms with an aggregate aboveground storage capacity less than 20,000 gallons
(the prior threshold was 10,000 gallons), no individual storage tank greater than
10,000 gallons, and no reportable discharge history may self-certify their SPCC
plan, in lieu of hiring a professional engineer for certification.

In addition, several recent rulemakings included provisions that may benefit farming operations.
•

In an April 2011 final rule,81 EPA exempted all milk and milk product containers
and associated piping from the SPCC requirements.82 EPA’s rationale for the
exemption is that these units are subject to industry standards for sanitation and
construction and may be regulated by other agencies, including the USDA. In
addition, the final rule states that exempted milk storage units are not included in
a facility’s overall oil storage volume, a primary factor for SPCC applicability.

•

In a November 2009 final rule,83 EPA exempted pesticide application equipment
and related mix containers that may currently be subject to the SPCC rule when
crop oil or adjuvant oil are added to formulations. EPA also clarifies that a nurse
tank is considered a mobile refueler, and, like other types of mobile refuelers, is
exempt from the sized secondary containment requirements. EPA estimated that
the total cost savings to farm owners and operators from these (and other)
amendments amount to $13 million on an annualized basis (2007$).84

(...continued)
Background and Legislation in the 113th Congress, Spill Prevention, Control, and Countermeasure (SPCC)
Regulations: Background and Legislation in the 113th Congress, by (name redacted).
81
U.S. Environmental Protection Agency, “Oil Pollution Prevention; Spill Prevention, Control, and Countermeasure
(SPCC) Rule—Amendments for Milk and Milk Product Containers,” 76 Federal Register 21652, April 18, 2011.
82
Pursuant to the CWA definition of oil, the SPCC requirements apply to petroleum-based and non-petroleum-based
oil (CWA §311(a); 33 U.S.C. 1321(a)). In a 1975 Federal Register notice, EPA clarified that its 1973 SPCC
regulations apply to oils from animal and vegetable sources (U.S. Environmental Protection Agency, “`Oil Pollution
Prevention, Applicability of 40 CFR part 112 to Non-Petroleum Oils; Notice,” 40 Federal Register 28849, July 9,
1975). EPA subsequently stated that “milk typically contains a percentage of animal fat, which is a non-petroleum oil”
and is thus subject to SPCC provisions (U.S. Environmental Protection Agency, “Oil Pollution Prevention; Spill
Prevention, Control, and Countermeasure Rule Requirements—Amendments,” 74 Federal Register 2461, January 15,
2009.
83
U.S. Environmental Protection Agency, “Oil Pollution Prevention; Spill Prevention, Control, and Countermeasure
(SPCC) Rule - Amendments,” 74 Federal Register 58784, November 13, 2009.
84
Ibid, p. 58805.

Congressional Research Service

27

Environmental Regulation and Agriculture

CRS Contact
Jonathan Ramseur, Specialist in Environmental Policy, 7-...., [redacted]@crs.loc.gov.

Energy
The agricultural industry is sensitive to fluctuations in energy sources and cost. The use of fossil
fuel-based fertilizers, diesel fuel, and, more recently, corn-based ethanol all have a significant
impact on both crop and livestock operations. Since the 1970s, federal policies have offered a
variety of incentives, regulations, and programs to encourage growth in the bioenergy industry as
a sustainable alternative to fossil fuels.85 The increased emphasis on agriculture-based biofuels
has received mixed reviews within the agricultural community.86 While some continue to push for
greater federal involvement, critics of the federal intervention also have emerged.
The following section covers several federal regulations relating to energy, including
•

renewable fuels standard (RFS2) rule; and

•

E15 waiver petition.

Renewable Fuels Standard (RFS2) Rule
The Energy Independence and Security Act of 2007 (P.L. 110-140; EISA) expanded the
renewable fuel standard (RFS) originally established in the Energy Policy Act of 2005 (P.L. 10958; EPAct05).87 The RFS requires that U.S. transportation fuel contain a minimum amount of
biofuel—this mandate then supports the domestic production and use of biofuels. The 2013 RFS
mandate was 16.55 billion gallons of biofuels (consisting mostly of ethanol produced from corn
starch), ramping up to 36 billion gallons in 2022 (consisting of approximately 60% of advanced
biofuels). EISA also requires that advanced biofuels (e.g., cellulosic biofuels, biomass-based
diesel, and others) and conventional biofuels from newly built refineries used to satisfy RFS
mandates meet certain lifecycle GHG reduction requirements.88 EPA is required to classify
biofuel production based on their lifecycle emissions, including emissions from direct and
indirect changes in land use. Only fuels that achieve a 50% reduction in GHG emissions relative
to petroleum fuels may be classified as advanced biofuels. Cellulosic biofuels must achieve at
least a 60% GHG emission reduction, while fuels from new corn ethanol plants must achieve a
20% GHG emission reduction—corn ethanol plants in existence or under construction when
EISA was enacted (December 19, 2007) are grandfathered.
85

For more information on agriculture-based biofuels, see CRS Report R41282, Agriculture-Based Biofuels: Overview
and Emerging Issues.
86
Examples of agriculture-based biofuels policy proponents include organizations who currently benefit directly from
policies, such as the National Corn Growers Association (corn-based ethanol) and American Soybean Association
(soybean-based biodiesel). Critics include organizations who rely on current biofuel sources for other non-fuel
purposes, such as the National Cattleman’s Beef Association and National Pork Producers Council.
87
See CRS Report R40155, Renewable Fuel Standard (RFS): Overview and Issues; or CRS Report R43325, The
Renewable Fuel Standard (RFS): In Brief .
88
See CRS Report R40460, Calculation of Lifecycle Greenhouse Gas Emissions for the Renewable Fuel Standard
(RFS).

Congressional Research Service

28

Environmental Regulation and Agriculture

Status
Under the Clean Air Act Section 211(o), as amended by EISA, EPA is required to set the annual
standards—or volume requirements—under the RFS each November for the following year based
on gasoline and diesel projections from the Energy Information Administration (EIA). EPA is also
required to set the cellulosic biofuel standard each year based on the volume projected to be
available during the following year, using EIA projections and assessments of production
capability from industry.
From 2010 to 2014, EPA analysis suggested that the United States did not have sufficient
cellulosic biofuel production capacity to meet the RFS mandates. As a result, EPA proposed
substantial reductions to the statutory RFS mandates for cellulosic biofuels for each of those
years.89 However, cellulosic biofuel production (and imports) failed to meet even the reduced
standards for 2010-2013 and participating fuel companies were obligated to purchase waiver
credits from the EPA in lieu of fulfilling their blending obligations. Then, in February 2013, under
remand from the U.S. Court of Appeals for the District of Columbia, EPA revised the 2012 RFS
for cellulosic biofuels to zero, and in November 2013, also revised the 2011 RFS for cellulosic
biofuels to zero. Also, in April 2014 EPA revised the 2013 cellulosic biofuel standard from 6
million ethanol-equivalent gallons to approximately 810,000 ethanol-equivalent gallons.90 In
addition to the difficulty of achieving the lowered cellulosic biofuels mandates, total renewable
fuel consumption (after achieving a 10% blending level in 2013) appears limited by blending and
distribution infrastructure—a phenomenon referred to as the blend wall.91 Also, significant
declines in national transportation fuel consumption since 2006 have contributed to the
difficulties in meeting biofuels RFS mandates. EPA is expected to announce a final 2014 RFS
mandate in June.92

Issues
The RFS has been a major policy supporting the development of U.S. biofuels industries,
especially for corn-based ethanol producers. Many believe that the expanded RFS will continue to
be a primary pillar of support for existing U.S. biodiesel production capacity (due to the
uneconomical nature of U.S. biodiesel production). In future years, as the advanced biofuel
mandates grow, the RFS could be the key driver for the development of biofuels from cellulose,
algae, and other non-food/feed commodities. However, unless substantial infrastructure issues
which limit consumers ability to use higher levels of ethanol are first overcome or greater
emphasis is placed on producing advanced biofuels that can be used with existing infrastructure,
the biofuels blending and consumption goals may be difficult to achieve and the RFS—if
imposed under such conditions—could have significant unintended economic consequences.

89
CRS Report R41106, Meeting the Renewable Fuel Standard (RFS) Mandate for Cellulosic Biofuels: Questions and
Answers.
90
U.S. Environmental Protection Agency, “Regulation of Fuels and Fuel Additives: 2013 Cellulosic Biofuel Standard,”
79 Federal Register, May 2, 2014.
91
The blend wall is the upper limit to the total amount of ethanol that can be blended into U.S. gasoline and still
maintain automobile performance and comply with the Clean Air Act.
92
“EPA Proposes 2014 Renewable Fuel Standards, 2015 Biomass-Based Diesel Volume” Office of Transportation and
Air Quality, EPA-420-F-13-048, November 2013.

Congressional Research Service

29

Environmental Regulation and Agriculture

Unintended Consequences of RFS Expansion
The initial biofuels expansion, which occurred during the 2006 to 2010 period when biofuels
usage was unobstructed by the blend wall, contributed to concomitant pressure on limited
agricultural resources (most notably land) as feedstock production intensified on existing
cropland and expanded onto new, marginal lands. This contributed to higher prices for those
commodities that compete for the affected cropland, as well as having important secondary
effects in related agricultural markets, including livestock feed markets and agricultural input
markets.
Corn is the primary feed ingredient used by the U.S. livestock sector (i.e., dairy, cattle, hogs, and
poultry), representing over 90% of all grains consumed, and about 57% of all grains and feed
concentrates consumed annually. As the price of corn rose, the entire feed complex price structure
rose as well, putting a cost squeeze on the U.S. livestock sector. A severe, widespread drought in
2012 further elevated concerns of ethanol-induced corn shortages. Under these conditions,
livestock and poultry producers joined the petroleum industry at the time in calling for the
modification or elimination of the RFS.
However, a return to normal weather and crop yields in 2013, coupled with the emergence of the
blend wall (see “E15 Waiver Petition” discussion, below) in late 2012 have largely reduced the
availability and cost of corn as an impediment to continued domestic ethanol consumption. Since
2010, both corn use for ethanol and ethanol production appear to have plateaued. Now, instead of
corn shortages and resource constraints, it appears that without important blending and
distribution infrastructure developments, corn ethanol consumption may be challenged to achieve
its ceiling set in the RFS of 15 billion gallons by 2015. As a result, its impact in other corn-user
markets has become negligible and is expected to diminish further in the coming years as corn
yields outpace biofuels consumption. These infrastructure constraints, coupled with fresh
memories of corn ethanol’s past impact in secondary markets, are likely to keep tremendous
pressure on policy makers to waive future RFS mandates.

Unachieved Cellulosic Biofuels Mandates
After four successive years (2010-2013) in which, first, EPA lowered the cellulosic biofuels
mandate, and then cellulosic biofuels production failed to achieve the lowered mandates, many
question whether the RFS mandates for cellulosic biofuels need to be drastically scaled back or
eliminated entirely. The cellulosic biofuels industry has argued that it would be able to produce
enough fuel to meet the RFS mandates if certain obstacles are overcome: lowering the cost of
conversion technology at the initial stages of commercial application, easing access to financing,
expediting government approval of cellulosic biofuel production pathways, developing
environmental regulations that are more complementary to the cellulosic biofuels industry,
removing feedstock supply uncertainties, and creating certainty for tax incentives. But with
limited commercial success to date and the blend wall standing as a major barrier to further rapid
expansion of biofuels consumption, there is considerable uncertainty about the future of the
cellulosic biofuels industry—even if the technological and commercial breakthroughs for
cellulosic biofuels were achieved.

Congressional Research Service

30

Environmental Regulation and Agriculture

CRS Contacts
(name redacted), Specialist in Agricultural Policy, 7-...., [redacted]@crs.loc.gov; (name redacted),
Specialist in Agricultural Conservation and Natural Resources Policy, 7-....,
[redacted]@crs.loc.gov; or Brent Yacobucci, Specialist in Energy and Environmental Policy, 7...., [redacted]@crs.loc.gov.

E15 Waiver Petition
By 2022, EISA requires the use of 36 billion gallons of renewable fuels, and much of this could
be ethanol from a variety of feedstocks (many of which are agricultural-based; see “Renewable
Fuels Standard (RFS2) Rule” discussion, above). However, there is an obstacle to the use of this
quantity of ethanol in gasoline. Currently, although some ethanol is sold as an alternative fuel
(E85), most is sold as an additive in conventional and reformulated gasoline. Until recently, the
amount of ethanol that could be blended into gasoline for all uses was limited to 10% by volume
(E10) pursuant to EPA guidance under the CAA, as well as by vehicle and engine warranties, and
certification procedures for fuel-dispensing equipment.
As the RFS is structured, assuming that most of the mandate is met using ethanol, the volume of
ethanol blended in gasoline is limited by gasoline consumption. In 2013, the RFS required over
16 billion gallons of renewable fuel, while projected gasoline consumption for 2013 was 134
billion gallons. After 2013, the renewable fuel mandate is scheduled to continue to increase.
However, a limit of 10% ethanol means that ethanol for gasoline blending (not including E85)
likely cannot exceed 14 billion-15 billion gallons per year.93 This “blend wall” is the maximum
possible volume of ethanol that can be blended into U.S. motor gasoline. The actual limit could
be slightly lower, since older fuel tanks and pumps at some retail stations may not be equipped to
handle ethanol-blended fuel.94 Because of the blend wall and other issues, EPA has proposed a
total RFS of 15.21 billion gallons for 2014––a level lower than both the 2014 level scheduled in
EISA and the actual amount required in 2013. What level EPA will finalize for 2014 and
subsequent years will determine whether there is impetus to roll out E15 on a wider scale.

Status
On March 6, 2009, Growth Energy (on behalf of 52 U.S. ethanol producers) applied to EPA for a
waiver from the CAA limitation on ethanol content in gasoline. Until recently, ethanol content in
gasoline for all uses was capped at 10% (E10); the application requested an increase in the
maximum concentration to 15% (E15). If fully granted, the waiver would allow the use of
significantly more ethanol in gasoline than is currently permitted.
On November 4, 2010, EPA granted a partial waiver allowing the use of E15 in MY2007 and
newer vehicles.95 The agency delayed a decision on MY2001-MY2006 vehicles until the
93
However, some of the mandate—in the range of 1 billion gallons—will be met with non-ethanol fuels, mainly
biodiesel and other biomass-based diesel fuels. Thus, the overall mandate can exceed the blend wall limit by some
amount.
94
For more information see CRS Report R40445, Intermediate-Level Blends of Ethanol in Gasoline, and the Ethanol
“Blend Wall”.
95
Environmental Protection Agency, “Partial Grant and Partial Denial of Clean Air Act Waiver Application Submitted
by Growth Energy to Increase the Allowable Ethanol Content of Gasoline to 15 Percent; Decision of the Administrator;
(continued...)

Congressional Research Service

31

Environmental Regulation and Agriculture

Department of Energy completed testing of those vehicles. On January 21, 2011, EPA announced
that the waiver would be expanded to include MY2001-MY2006 vehicles.96 EPA determined that
data were insufficient to address concerns that had been raised over emissions from MY2000 and
older vehicles, as well as heavy-duty vehicles, motorcycles, and non-road applications (including
farm equipment), and thus a waiver for these vehicles/engines was denied. EPA has noted that
granting the waiver eliminates only one impediment to the use of E15—other factors, including
retail and blending infrastructure (including gasoline storage tanks and pumps), state and local
laws and regulations, and manufacturers’ warranties, would still need to be addressed. Because of
concerns over potential damage by E15 to equipment not designed for its use, this partial waiver
was challenged in court by a group of vehicle and engine manufacturers, among others,97
although the challenge was ultimately unsuccessful. In the 112th Congress, the House adopted an
amendment (H.Amdt. 156) to H.R. 1 that would have blocked EPA from using FY2011 funds to
implement the agency’s waiver decision, although the Senate bill did not contain that provision
and the bill was not enacted. In the 113th Congress, legislation has been proposed (H.R. 1462 ,
H.R. 1469, and S. 344) that would overturn EPA’s E15 decision and bar the agency from issuing
further waivers.
On March 15, 2012, EPA approved the model misfueling mitigation plan (MMP) submitted by
the Renewable Fuels Association (RFA) as step for companies to develop their own MMPs.98
Since then, companies have registered with EPA, and at least 78 retailers have begun selling
E15.99

Issues
EPA approval of the waiver request could help open the door to E15 blending. This could be a
strong signal to the biofuels industry concerning federal support for meeting and enforcing RFS
mandate levels. As a result, this could help to stimulate new investment in the biofuels sector. In
the short run, the corn ethanol industry would be the main beneficiary, since it is best able to
respond to the expanding RFS mandates. Any further increase in corn ethanol use would benefit
corn producers. The net result could be an intensification of agricultural resource use with the
same consequences discussed previously (see “Renewable Fuels Standard (RFS2) Rule”).
However, as noted above, because of the limited availability of E15 and for other reasons, EPA
has proposed a 2014 RFS mandate that is lower than both the 2014 level scheduled in the statute

(...continued)
Notice,” 75 Federal Register 68094-68150, November 4, 2010.
96
Environmental Protection Agency, “Partial Grant of Clean Air Act Waiver Application Submitted by Growth Energy
to Increase the Allowable Ethanol Content of Gasoline to 15 Percent; Decision of the Administrator,” signed January
21, 2011 (awaiting publication in the Federal Register).
97
The Alliance of Automobile Manufacturers (Alliance), the Association of International Automobile Manufacturers,
Inc. (AIAM), the National Marine Manufacturers Association (NMMA), and the Outdoor Power Equipment Institute
(OPEI). OPEI, Fact Sheet: E-15 Partial Waiver Legal Challenge, December 17, 2010. The case is Alliance of
Automobile Manufacturers et. al v. Environmental Protection Agency.
98
Renewable Fuels Association News Release, “Ethanol Industry, EPA Ready for E15 Rollout,” March 15, 2012;
available at http://www.ethanolrfa.org/news/entry/ethanol-industry-epa-ready-for-e15-rollout/.
99
Renewable Fuels Association New Release, “Lawrence Gas Station First in the Country to Offer E15 Fuel,” July 17,
2012; available at http://www.ethanolrfa.org/news/entry/lawrence-gas-station-first-in-the-country-to-offer-e15-fuel/.
Choose Ethanol, E15 Stations; available at http://www.chooseethanol.com/pages/e15-stations-by-state.

Congressional Research Service

32

Environmental Regulation and Agriculture

and the actual 2013 mandated level. Further reductions in the RFS mandates would likely hinder
a significant roll-out of E15.
The ability to address concerns over the use of E15 in legacy equipment (both infrastructure and
vehicles) will affect the rollout of E15 to retail stations. As noted above, EPA’s decision to allow
E15 in some vehicles only addresses one part of the blend wall. State laws and regulations,
vehicle and equipment certifications and warranties, and questions over fuel suppliers’
willingness to market the fuel could all be impediments to an expansion of E15 use. For example,
few automakers have updated their vehicle warranties to allow E15 in their newer vehicles, and
none have updated warranties to cover the use of E15 in existing (pre-2012) vehicles.
Equipment manufacturers, meat producers, gasoline suppliers, and others challenged the EPA E15
waiver decision in federal court. On August 20, 2012, the U.S. Court of Appeals for the D.C.
Circuit

[Text truncated at 120,000 characters. The full text is on the page linked above.]

---

Source: Frix Law Library, https://www.frixlaw.com/law-library/documents/crs%3AR41622. Public record. Not legal advice.