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                                                                       [PUBLISH]



               IN THE UNITED STATES COURT OF APPEALS

                       FOR THE ELEVENTH CIRCUIT
                         ________________________

                               No. 18-10541
                         ________________________

                  D.C. Docket No. 8:17-cv-00618-SDM-MAP



CENTER FOR BIOLOGICAL DIVERSITY,
MANASOTA-88, INC.,
PEOPLE FOR PROTECTING PEACE RIVER, INC.,
SUNCOAST WATERKEEPER,

                                                Plaintiffs - Appellants,

versus

U.S. ARMY CORPS OF ENGINEERS,
TODD T. SEMONITE,
Lt. Gen., in his official capacity as
Commanding General and Chief of Engineers
of the U.S. Army Corps of Engineers,
JASON A. KIRK,
Col., in his official capacity as
District Commander of the U.S. Army Corps of Engineers,
U.S. DEPARTMENT OF THE INTERIOR,
DAVID BERNHARDT,
in his official capacity as
Secretary of the U.S. Department of the Interior, et al.,

                                                Defendants - Appellees,
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MOSAIC FERTILIZER, LLC,

                                                          Intervenor-Defendant - Appellee.

                               ________________________

                      Appeal from the United States District Court
                          for the Middle District of Florida
                            ________________________

                                    (November 4, 2019)

Before ED CARNES, Chief Judge, and MARTIN and ROGERS, ∗ Circuit Judges.

ROGERS, Circuit Judge:

       Under the Clean Water Act, the Army Corps of Engineers regulates

discharges into wetlands that are waters of the United States, and must consider the

direct and indirect environmental effects of such discharges before issuing a permit

to discharge. Mining for phosphate ore (used to make phosphoric acid that is in

turn used to make fertilizer) produces dredged and fill material that Mosaic, a

fertilizer manufacturer engaged in phosphate mining, seeks to discharge into such

wetlands. The subsequent process of manufacturing fertilizer from the mined

phosphate ore generates a radioactive byproduct, phosphogypsum. The primary

question in this case is whether the Corps must take into account certain

environmental effects of producing and storing phosphogypsum—distant in time


       ∗ Honorable John M. Rogers, United States Circuit Judge for the Sixth Circuit, sitting by
designation.
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and place from the wetland discharges accompanying the phosphate mining—

merely because phosphogypsum is a byproduct of manufacturing fertilizer from

the mined ore. While it is true that the Corps must consider indirect environmental

effects, the Supreme Court has made clear that indirect effects must be proximate,

and do not include effects that are insufficiently related to an agency’s action.

Dep’t of Transp. v. Pub. Citizen, 

, 767 (2004). In assessing this

proximate cause limitation, the Corps may reasonably take into account the fact

that the distantly caused effects in question are subject to independent regulatory

schemes. 

the discharge permit in this case without addressing the

environmental effects of phosphogypsum, the Corps relied in part on the fact that

other agencies directly regulate these effects. Such reasoning in this case by the

Corps was not arbitrary, capricious, or an abuse of discretion. Other bases asserted

for rejecting the Corps’ discharge permit also lack merit, and the district court

accordingly properly upheld the Corps’ permit.

                                          I.

      Mosaic wishes to extend its mining operations within the central Florida

phosphate mining district. Mosaic must obtain mining permits from the Florida

Department of Environmental Protection (“FDEP”), which, under authority

delegated to it by the EPA, issues permits for phosphate mining in Florida, with

conditions and requirements regarding pollutant discharge. See 33 U.S.C.


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§§ 1311(a), 1342(a) (describing the National Pollutant Discharge Elimination

System (“NPDES”) permit program). In connection with these planned mining

operations, Mosaic seeks to discharge dredged and fill material into waters of the

United States. This activity is subject to regulation under the Clean Water Act,

which prohibits the discharge of pollutants into the waters of the United States

absent an appropriate permit. See 

The Corps has regulatory

authority over the applicable permit here, the Section 404 permit, to allow the

discharge of dredged or fill material into navigable waters. See 

       In 2010 and 2011, Mosaic sought four Section 404 permits under the Clean

Water Act to carry out this discharge activity.1 The Corps’ issuance of a Section

404 permit counts as a major federal action, so the Corps was required to consider

the environmental impact of issuing such a permit to Mosaic, which it did. As

documented in its 500-page report, the Corps considered—among many other

things—direct effects, such as how the discharge of dredged material into

surrounding wetlands might affect the water quality of those wetlands. See 40

C.F.R. § 1508.8(a). The Corps also considered indirect effects, such as how that

discharge might through stormwater runoff be carried to and affect the quality of

distant waters. 

       1
         Mosaic’s predecessor, CF Industries, applied for the permit at issue. Mosaic and CF
later merged. We refer to the combined entity as Mosaic throughout for convenience.
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      Because the Corps’ action constitutes a major federal action, the Corps must

also comply with the National Environmental Policy Act (“NEPA”). NEPA

requires federal agencies to “take a ‘hard look’ at the potential environmental

consequences of their actions.” Ohio Valley Envt’l Coal v. Aracoma Coal Co., 

, 191 (4th Cir. 2009) (quoting Robertson v. Methow Valley Citizens

Council, 

, 350 (1989)). Under NEPA, agencies are required to

produce environmental-impact statements that account for the direct, indirect, and

cumulative effects of major proposed actions. Direct effects are “caused by the

action and occur at the same time and place”; indirect effects “are caused by the

action and are later in time or farther removed in distance, but are still reasonably

foreseeable.” 40 C.F.R. § 1508.8. By “reasonably foreseeable,” the regulations

mean effects that are “sufficiently likely to occur that a person of ordinary

prudence would take [them] into account in reaching a decision.” See

EarthReports, Inc. v. FERC, 

, 955 (D.C. Cir. 2016) (quoting Sierra

Club v. FERC, 

, 47 (D.C. Cir. 2016)).

      The Corps determined that Mosaic’s four mining-related projects had

similarities that provided a basis for evaluating their environmental consequences

together in one area-wide environmental-impact statement. The area-wide

environmental-impact statement served as the project-specific NEPA analysis for

each of the four permit applications. In 2016, the Corps published a draft Section


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404 analysis and public-interest review for one of the proposed projects, the South

Pasture Mine Extension. In doing so, the Corps also prepared a supplemental

environmental assessment focusing on the South Pasture Mine Extension, to be

read in conjunction with the area-wide environmental-impact statement for

purposes of NEPA. In connection with the proposed Section 404 permit for the

South Pasture Mine Extension, the Corps formally consulted with the Fish and

Wildlife Service to obtain a biological opinion analyzing the potential effects that

the mine extension would have on certain species. Ultimately, in November 2016,

the Corps issued Mosaic a Section 404 permit for the South Pasture Mine

Extension.

      Accordingly, Mosaic will be able to discharge dredged and fill material into

the waters of the United States in connection with mining phosphate at the South

Pasture Mine Extension for subsequent use in fertilizer production. Phosphate

mining is a form of strip mining. After excavating the sand, clay, and phosphate

ore from the site, Mosaic engages in a beneficiation process to separate the sand

and clay from the valuable phosphate ore. The phosphate ore is then transported to

Mosaic’s fertilizer plants for processing into phosphoric acid. Phosphoric acid in

turn is used to produce fertilizer. But the process of producing phosphoric acid

generates waste in the form of phosphogypsum, a radioactive byproduct.

Approximately five tons of phosphogypsum waste is created for every ton of


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useful phosphoric acid produced, for a total of over 30 million tons generated each

year. Because phosphogypsum contains radioactive uranium and other metals that

the EPA considers to pose a risk to humans and the environment, it must be stored

and left to “weather” (reduce in radioactivity) in large open-air “stacks” that are

hundreds of acres wide and hundreds of feet tall. The Corps determined that the

environmental effects of phosphogypsum production and storage fell outside the

scope of its NEPA review. This led Bio Diversity to file suit.

      Bio Diversity’s complaint raises several claims under the Administrative

Procedure Act (“APA”), NEPA, and the Endangered Species Act. The Corps

moved for and was granted summary judgment. The district court found that there

was nothing arbitrary and capricious about the Corps’ determination that

phosphogypsum stacks fell outside the scope of its NEPA analysis. Rather, the

district court found that the Corps rationally treated fertilizer plants and their

phosphogypsum waste as independent from the mining activities authorized by the

Section 404 permit. The district court also approved the Corps’ decision to

analyze all four closely related projects in a single area-wide environmental-impact

statement for NEPA purposes. Finally, the court rejected Bio Diversity’s claim

under the Endangered Species Act that the Corps was required to consult with the

Fish and Wildlife Service before finalizing the area-wide environmental-impact

statement. Bio Diversity appeals.


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                                          II.

      As the district court properly determined, it was reasonable for the Corps to

conclude that the environmental effects of phosphogypsum production and storage

fell outside the scope of its NEPA review. NEPA and its regulations require

agencies to consider only those effects caused by the agency’s action, but

phosphogypsum-related effects are caused by the Corps’ Section 404 permit in

only the most attenuated sense. In traditional legal terms, even if the Corps’ permit

is a but-for cause of those effects, it is not a proximate—or legally relevant—

cause. Moreover, because the Corps lacks the authority to regulate

phosphogypsum wholesale, the “rule of reason” instructs that the Corps need not

consider its effects. Finally, the Corps’ scoping decision is consistent with its own

regulations, the Corps’ interpretation of which is entitled to deference.

      NEPA requires agencies to consider the “environmental impact of the

proposed action.” 42 U.S.C. § 4332(C)(i). Here, the Corps’ action is the issuance

of a Section 404 permit authorizing the discharge of dredged and fill material into

United States waters. The Corps did not issue a mining permit, nor a permit to

produce fertilizer or to store phosphogypsum—it has no jurisdiction to regulate or

authorize any of that. Having defined the federal action, “[t]o determine whether

[NEPA] requires consideration of a particular effect, [the court] must look at the

relationship between that effect and the change in the physical environment caused


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by the major federal action at issue.” Metro. Edison Co. v. People Against Nuclear

Energy, 

, 773 (1983). Only the effects caused by that change in the

environment—here, the discharge into U.S. waters—is relevant under NEPA.

      Phosphogypsum-related effects are, at most, tenuously caused by the

discharge of dredged and fill material allowed by the Corps’ permit.

Phosphogypsum is a byproduct not of dredging and filling—nor even of phosphate

mining or beneficiation—but of fertilizer production. Further, the fertilizer

production takes place far from and long after the Corps-permitted discharges.

Further still, the EPA and the FDEP—not the Corps—directly regulate fertilizer

plants and phosphogypsum, including the “design, construction, operation, and

maintenance of phosphogypsum stack systems.” See 42 U.S.C. § 6901 et seq.

Mosaic’s fertilizer production will add to existing gypstacks, as they are called, but

will not result in any new stacks. Even the nearest fertilizer plants and gypstacks

to the South Pasture Mine Extension receive phosphate rock from many different

sources outside of the Corps’ jurisdiction. That means that gypstacks and the

effects of phosphogypsum will continue to exist so long as, and to the extent that,

Florida and the EPA allow—regardless of the Corps’ permitting decision.

      Bio Diversity focuses on what it deems a but-for causal relationship between

the Corps’ permit and the production of phosphogypsum. That relationship

focuses on the fact that Mosaic’s fertilizer plants, which produce phosphogypsum,


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receive phosphate ore from local mines the company also owns. Bio Diversity

therefore contends that “but for” the Corps’ Section 404 permit, phosphogypsum’s

environmental effects would be diminished because Mosaic would not be able to

obtain as much phosphate, thereby reducing its fertilizer (and phosphogypsum

byproduct) production, if it could not discharge dredged and fill material into U.S.

waters, which necessarily accompanies Mosaic’s phosphate mining here. But the

happenstance that Mosaic is the company mining the phosphate and discharging

dredged and fill material into U.S. waters, and also the company running the

fertilizer plant that produces phosphogypsum, does not change the fact that these

events are insufficiently related to one another. NEPA does not stretch this far.

      NEPA does not cover all “effects that are ‘caused by’ a change in the

physical environment in the sense of ‘but for’ causation.” Metro. Edison 

. Instead, NEPA requires a “reasonably close causal relationship

between a change in the physical environment and the effect at issue,” akin to the

“familiar doctrine of proximate cause.” See 

courts must “look to

the underlying policies or legislative intent in order to draw a manageable line

between those causal changes that may make an actor responsible for an effect and

those that do not.” 

n.7. The Corps reasonably determined that its

Section 404 permit is not a proximate cause of attenuated phosphogypsum-related




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effects, and the competing line suggested by Bio Diversity is anything but

manageable.

      Whatever causal relationship exists between the Corps-approved discharges

and the effects of phosphogypsum, it is not a reasonably close one.

Phosphogypsum is created and stored miles from the authorized discharges. In

addition, phosphogypsum will only be created so long as Mosaic continues to

operate in the fertilizer industry, the market continues to demand fertilizer with

phosphoric acid, and phosphogypsum’s regulators continue to permit its creation

and storage throughout Florida. Intervening events such as these ordinarily break

the causal chain.

      Given this tenuous causal chain, it was sensible for the Corps to draw the

line at the reaches of its own jurisdiction, leaving the effects of phosphogypsum to

phosphogypsum’s regulators. The Corps’ line respects the jurisdictional

boundaries set by Congress and inherent in state–federal cooperation. The Clean

Water Act empowers the Corps to grant Section 404 permits to “restore and

maintain the chemical, physical, and biological integrity of the Nation’s waters” by

regulating “the discharge of pollutants into the navigable waters.” 33 U.S.C.

§ 1251(a)(1). No federal law empowers the Corps to protect the environment writ

large or to regulate phosphate mining as such, much less fertilizer production or

phosphogypsum stacking. Whatever federal regulatory powers there are over


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phosphogypsum-related effects, Congress granted to the EPA, leaving the bulk of

control over phosphate mining and fertilizer production to the states. See 42

U.S.C. § 6901 et seq. Requiring the Corps to enter those regulatory spheres not

only offends congressional design but risks duplicative, incongruous, and unwise

regulation. Because the Corps does not generally regulate phosphogypsum, it has

no subject-matter expertise in that area.

      “The scope of the agency’s inquiries must remain manageable if NEPA’s

goal of ‘ensur[ing] a fully informed and well considered decision’ is to be

accomplished.” Metro. Edison 

(quoting Vermont Yankee

Nuclear Power Corp. v. NRDC, 

, 558 (1978)). Far from manageable,

the new inquiries required of the Corps would bog down agency action in the name

of duplicative and potentially incoherent regulation.

      The Corps’ decision not to consider phosphogypsum-related effects is fully

justified by the rule of reason announced in Public 

. The

rule of reason “ensures that agencies determine whether and to what extent to

prepare an [environmental-impact statement] based on the usefulness of any new

potential information to the decisionmaking process.” 

an agency

has no ability to prevent a certain effect due to its limited statutory authority over

the relevant actions, the agency cannot be considered a legally relevant ‘cause’ of

the effect.” 

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      The Corps has no categorical statutory authority under the Clean Water Act

to prevent phosphogypsum-related effects apart from the possibility that they are

direct, indirect, or cumulative effects of the discharges into U.S. waters. This

supports the Corps’ decision not to consider those effects. Section 404 of that Act

authorizes the Corps to “issue permits . . . for the discharge of dredged or fill

material into the navigable waters at specified disposal sites.” 33 U.S.C.

§ 1344(a). That section further authorizes the Corps to reject such a permit

“whenever [it] determines . . . that the discharge of such materials into such area

will have an unacceptable adverse effect on municipal water supplies, shellfish

beds and fishery areas (including spawning and breeding areas), wildlife, or

recreational areas.” 

The Corps has no categorical power to refuse a

permit for any other reason, such as its dislike of the applicant’s business or

downstream effects not sufficiently caused by “the discharge of such materials.”

The Corps accordingly properly relied upon the fact that phosphogypsum-related

effects are primarily regulated by other agencies in its determination not to

consider those effects, and did so without violating NEPA.

      This makes good sense in light of the existing regulatory landscape over

phosphogypsum. Mosaic and others already produce fertilizer in Florida, and

gypstacks will exist in Florida regardless of the Corps’ actions. Thus, current and

future phosphogypsum will cause environmental effects with or without the Corps’


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permit—subject only to regulation by Florida and the EPA. On the flip side,

Florida or the EPA could regulate those gypstacks out of existence even if the

Corps were to grant Mosaic its Section 404 permit. Requiring the Corps to

consider the effects of phosphogypsum is not reasonable when it is independent of

the regulators more directly responsible for evaluating those effects.

      Further, that the Corps could indirectly mitigate future phosphogypsum-

related effects by conditioning the supply of phosphate ore does not mean the

Corps must consider wielding its regulatory powers with that ulterior motive in

mind. The rule of reason turns, at least in part, on the agency’s statutory authority,

not on what outcomes an agency might achieve through indirect coercion. If the

Corps were required to consider all effects that it might indirectly police—even

those far from its proper sphere of regulatory authority—its NEPA review would

have to account for every conceivable environmental effect of fertilizer’s use. It is

foreseeable, for instance, that farmers will use Mosaic’s fertilizer to treat their

crops and that some fertilizer will be carried by stormwater runoff into sewers and

streams. Extending Bio Diversity’s logic, because the Corps could indirectly

mitigate those effects by denying Mosaic its Section 404 permit and thereby

choking its fertilizer plants of phosphate, the Corps must consider the

environmental effects of crop fertilization. That cannot be right.




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      Public Citizen flatly held that “where an agency has no ability to prevent a

certain effect due to its limited statutory authority over the relevant actions, the

agency cannot be considered a legally relevant ‘cause’ of the 

. There, an agency within the Department of Transportation was tasked with

setting federal safety standards and registration requirements for Mexican-

domiciled commercial vehicles operating in the United States. See 

In earlier years, Congress had enacted a moratorium on the agency’s registration of

Mexican-domiciled motor carriers. Eventually, Congress and the President agreed

to lift the moratorium—but only after the agency promulgated new safety and

registration rules. See 

In the course of that rulemaking, the agency

conducted a NEPA analysis of the environmental effects of its proposed rules, such

as the effects on air quality caused by the increased number of roadside inspections

its new rules would bring about. See 

An environmental group sued,

contending that the agency was required to consider the environmental effects of

the increased number of Mexican-domiciled motor carriers operating within the

U.S. because of the lifting of the moratorium. That was necessary, according to

the environmental group, because the agency’s rulemaking was a but-for cause of

the lifting of the moratorium. See 

      Despite this “but for” relationship between the agency’s rulemaking and the

lifting of the moratorium, the Supreme Court held that NEPA did not require the


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agency to consider effects that it “ha[d] no ability categorically to prevent.” See 

That followed because the rule of reason recognizes that it is pointless to

require agencies to consider information they have no power to act on, or effects

they have no power to prevent. In Public Citizen, the agency had the statutory

authority only to promulgate safety and regulation standards—not to keep the

moratorium in place or modify its lifting, which only Congress and the President

could do.

      That rule applies in much the same way here. The Corps has no ability

categorically to prevent fertilizer production or the creation and storage of

phosphogypsum. As in Public Citizen, it is irrelevant that the Corps’ action is, in

an attenuated way, a but-for cause of phosphogypsum production, because Florida

and the EPA have primary authority to regulate or prevent phosphogypsum’s

creation and storage. Thus, here too it would be pointless to require the Corps to

gather and examine information regarding effects that it has no authority to

prevent.

      It is true that the agency in Public Citizen had no discretion to refuse

registration (absent the moratorium) to a motor carrier that complied with its

regulations. But that is beside the point. Individual registration was not at issue;

rulemaking was, and the agency did have discretion to set safety and registration

standards. The Supreme Court rejected the idea that the agency could indirectly


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mitigate the environmental effects of lifting the moratorium by (i) not

promulgating any new rules or (ii) setting burdensome standards so that fewer

motor carriers could meet them and operate in the U.S. See 

The

Court held that it was not enough that the agency could, in fact, mitigate those

effects, when the agency was not statutorily authorized to base its decision on

those ancillary effects. See 

is true here: The Corps could, in fact,

mitigate the effects of phosphogypsum by rejecting the Section 404 permit and

choking off Mosaic’s supply of phosphate ore. But the Corps is not statutorily

authorized to base its permitting decision on environmental effects that are so

indirectly caused by its action.

      The Corps could conceivably hinge its permitting decision on the effects of

phosphogypsum, but only by ignoring the Clean Water Act’s text and misapplying

its implementing regulations. The Clean Water Act does not give the Corps the

discretion to deny a Section 404 permit for any reason of its choosing. Although

the first subsection of § 1344 says the Corps “may issue permits . . . for the

discharge of dredged or fill material into the navigable waters at specified disposal

sites,” 33 U.S.C. § 1344(a), the Act also provides that the Corps

      is authorized to deny or restrict the use of any defined area for
      specification . . . as a disposal site [i.e., deny a permit], whenever [it]
      determines . . . that the discharge of such materials into such area will
      have an unacceptable adverse effect on municipal water supplies,
      shellfish beds and fishery areas (including spawning and breeding
      areas), wildlife, or recreational areas.
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Read together, those provisions limit the Corps’ discretion to grant

or issue permits. The Corps may not deny a permit for any reason under the sun—

including its distaste for later conduct the applicant will engage in—but only if the

allowed discharge will directly, indirectly, or cumulatively have an unacceptable

environmental effect. And the scope of that analysis is bounded by proximate

cause and the rule of reason. Because the Corps cannot deny a permit because of

phosphogypsum effects, which are beyond the scope of § 1344(c), the Corps was

not required to consider those effects. See Pub. 

–68. Thus,

as in Public Citizen, the Corps’ Section 404 permit for the discharge of dredged

material is not a proximate cause of the effects of Mosaic’s fertilizer production,

and such effects need not be considered under NEPA.

      The same is true under the Clean Water Act’s implementing regulations.

Those regulations require the Corps to conduct a public-interest review before

granting a permit, but that obligation is not an authorization to deny a permit based

on the environmental impacts of non-agency action. In the first place, regulations

cannot contradict their animating statutes or manufacture additional agency power.

See, e.g., FDA v. Brown & Williamson Tobacco Corp., 

, 125–26

(2000); Manhattan Gen. Equip. Co. v. Comm’r of Internal Revenue, 

,

134–35 (1936). Because the statute authorizes the Corps to deny a permit only if

the discharge itself will have an unacceptable environmental impact, the
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regulations cannot empower the Corps to deny permits for any other reason—

including downstream phosphogypsum-related effects of fertilizer production.

      The regulations also focus the Corps’ review on the effects of its action. The

regulations provide that “[t]he decision whether to issue a permit will be based on

an evaluation of the probable impacts, including cumulative impacts, of the

proposed activity and its intended use on the public interest.” 33 C.F.R.

§ 320.4(a)(1) (emphasis added). Again, the “proposed activity” is the proposed

federal action that triggers NEPA—here, the issuance of the discharge permit.

Obligating the Corps to consider whether the discharge of dredged and fill material

is in the public interest, is not the same as authorizing the Corps to consider

whether fertilizer production and its consequences are in the public interest.

      To take an alternative, unbounded view of the public-interest review would

be to appoint the Corps de facto environmental-policy czar. Rather than consider

whether the Corps’ own action is in the public interest, that broader view would

have the Corps consider whether fertilizer production and use is really worth the

cost. And that could be just the beginning. The next time the Corps is asked to

approve a section of a gas pipeline running through a wetland, would the Corps be

required to consider whether the country’s reliance on fossil fuels is really in the

public interest?




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      The D.C. Circuit’s outlier opinion in Sabal Trail provides little support for

Bio Diversity’s argument. See Sierra Club v. FERC (Sabal Trail), 

(D.C. Cir. 2017). There, FERC authorized the construction and operation of a

pipeline network that would feed gas directly to power plants that would burn the

gas. See 

The Sierra Club sued and argued that FERC failed to

consider the greenhouse-gas effects of burning that gas at the power plants. The

D.C. Circuit, over a powerful dissent, held that FERC was required to consider

those downstream environmental effects.

      Sabal Trail is both questionable and distinguishable. First, the causal

relationship between the agency action and the putative downstream effect was

much closer there than it is here. FERC authorized a pipeline that would pump gas

directly into a power plant to be burned, causing greenhouse-gas emissions. The

Corps, on the other hand, approved only the discharge of dredged and fill

material—one small piece of Mosaic’s mining operations, which extracts a sand,

clay, and phosphate ore mixture, which is supplied to beneficiation plants where

the phosphate ore is separated out, which is then transported to fertilizer plants to

make phosphoric acid, which results in phosphogypsyum byproduct, and the

phosphoric acid is used to produce fertilizer. The phosphogypsum produced as a

byproduct when phosphate ore is processed into phosphoric acid is only then

stored around the state of Florida and liable to produce environmental effects.


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That articulated causal chain bears little resemblance to the two-link version in

Sabal Trail.

      Second, the scope of the agency’s statutory authority in Sabal Trail was

much broader than the Corps’ here, and the rule of reason hinges, in any given

case, on the scope of the agency’s statutory authority because an agency need not

consider an effect it has no statutory authority to prevent. See Pub. 

. In Sabal Trail, FERC was statutorily empowered to deny a pipeline

certificate on the ground that its construction and operation “is [not] required by

the present or future public convenience and necessity.” See 15 U.S.C. § 717f(e).

The Sabal Trail court understood that to mean “FERC could deny a pipeline

certificate on the ground that the pipeline would be too harmful to the

environment.” See Sabal 

. But here, as discussed, the

Corps has no broad statutory authority to deny a discharge permit based on the

public convenience and necessity of the operation of Mosaic’s fertilizer plants. See

33 U.S.C. § 1344(c).

      Third, Sabal Trail is at odds with earlier D.C. Circuit cases correctly holding

that “the occurrence of a downstream environmental effect, contingent upon the

issuance of a license from another agency with the sole authority to authorize the

source of those downstream effects, cannot be attributed to the [agency]; its actions

‘cannot be considered a legally relevant cause of the effect for NEPA purposes.’”


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Sabal 

(Brown, J., concurring in part and dissenting in part)

(quoting Sierra Club v. FERC (Freeport), 

, 47 (D.C. Cir. 2016) and

citing Sierra Club v. FERC (Sabine Pass), 

, 68 (D.C. Cir. 2016) and

EarthReports, Inc. v. FERC, 

, 952 (D.C. Cir. 2016)).

      Fourth, the legal analysis in Sabal Trail is questionable at best. It fails to

take seriously the rule of reason announced in Public Citizen or to account for the

untenable consequences of its decision. The Sabal Trail court narrowly focused on

the reasonable foreseeability of the downstream effects, as understood colloquially,

while breezing past other statutory limits and precedents—such as Metropolitan

and Public Citizen—clarifying what effects are cognizable under NEPA. See 

      Under the rule of reason, agencies are not required to consider effects that

they lack the statutory authority categorically to prevent. Here, the Corps lacks the

authority categorically to prevent the effects of downstream fertilizer production,

including those from phosphogypsum’s creation and storage. Thus, the Corps

acted reasonably in deciding not to consider those effects.

      Finally, the Corps’ decision is consistent also with the Corps’ own

regulations. At the very least, the regulations are ambiguous as to their exact

application in this case. That means we are in the heartland of Auer deference:

where “the law runs out, and policy-laden choice is what is left over.” See Kisor v.


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Wilkie, 

, 2415 (2019). Because the Corps tailored its analysis

according to a reasonable interpretation of its own regulations and its own

substantive expertise, the Corps’ interpretation should be deferred to. See 

Auer v. Robbins, 

, 461 (1997); see also 

.

      The Corps’ regulations anticipate that a permit applicant “may propose to

conduct a specific activity requiring a [Corps permit] (e.g., construction of a pier in

a navigable water of the United States) which is merely one component of a larger

project (e.g., construction of an oil refinery on an upland area).” 33 C.F.R. pt. 325,

app. B § 7(b)(1). That is what happened here: Mosaic proposed to discharge

dredged and fill material into U.S. waters as merely one component of its larger

mining operation. In those circumstances, the regulations provide that the Corps

“should establish the scope of the NEPA document (e.g., the [Environmental

Assessment] or [Environmental Impact Statement]) to address the impacts of the

specific activity requiring a [Corps] permit and those portions of the entire project

over which the [Corps] has sufficient control and responsibility to warrant Federal

review.” See 

If that guidance were not clear enough, the

statement accompanying the regulation is: “The Corps authorizes the discharge of

dredged or fill material in 404 permits. Therefore, the activity the Corps studies in

its NEPA document is the discharge of dredged or fill material.” Environmental


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Quality Procedures for Implementing the National Environmental Policy Act

(NEPA), 53 Fed. Reg. 3120, 3121 (Feb. 3, 1988). The Corps was required to study

more only if it had “sufficient control and responsibility” over those other effects.

      It was not arbitrary and capricious for the Corps to conclude that it did not

have “sufficient control and responsibility” over Mosaic’s downstream fertilizer

production. Those plants already exist; they are not a part of Mosaic’s proposed

mining expansion. The plants and gypstacks are many miles away from where

Mosaic would discharge into U.S. waters. Moreover, two other regulators—one

state, one federal—have express control and responsibility over fertilizer

production and phosphogypsum.

      The hypotheticals included in the regulations squarely support the Corps’

determination. For example, when a power plant is proposed to be built and the

Corps’ only involvement is to approve a connecting pipeline or road through U.S.

waters, that permit “normally would not constitute sufficient” control and

responsibility to expand the Corps’ NEPA analysis to cover the portions of the

facility outside its jurisdictional waters. See 33 C.F.R. pt. 325, app. B § 7(b)(3).

The reasonableness of the Corps’ decision here follows a fortiori from there. In

that hypothetical, the Corps approved a pipeline or road that ran directly to the

proposed power plant. Despite that close connection, the regulations did not

extend control over the facility. Here, the relationship is nowhere near that close.


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       The scope of the benefit of a project cannot, moreover, always define the

scope of the agency’s consideration. It is true that, under the regulations, “the

scope of analysis used for analyzing both impacts and alternatives should be the

same scope of analysis used for analyzing the benefits of a proposal.” See 

But this cannot mean that whenever an agency determination will help

the local economy, for instance, it is required to consider whether the proposed

activity may put some other employers out of business. Here, the argument is that

the Corps violated § 7(b)(3) by including in its report that one “substantial indirect

effect of the mining” is the “export of finished phosphate products and fertilizer

through the Port of Tampa each year.” The Corps was not, however, trying to have

its cake and eat it too—it properly balanced the benefits of the project against its

detriments. In doing so, it recognized that the overall project purpose was the

extraction of phosphate ore within a practicable distance of Mosaic’s beneficiation

plants. It makes no sense to expand the required scope of the Corps’

environmental consideration merely because the Corps explained why phosphate

ore is mined in the first place—largely to be converted into phosphoric acid and

used in fertilizer.

       The obvious purpose of § 7(b)(3) is to prevent the Corps from unfairly

carving a project (over which it has control) into thin slices and then balancing the

benefits of the overall project against the watered-down environmental impacts of


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each individual slice—in order to avoid a true study of the overall impacts.

Florida Wildlife Federation v. U.S. Army Corps of Engineers shows how this

works in action. 

(S.D. Fla. 2005). There, Palm Beach

County made plans to build a research park, the development of which would

require discharges into U.S. waters. The County applied for a Section 404 permit,

but only in relation to one subdivision of the research park; it asked the Corps to

evaluate that one subdivision independently from the much larger planned

development, which would also require Section 404 permits. See 

The

Corps acquiesced and considered the environmental impacts of the subdivision

alone. Yet, it balanced those minor negative impacts against the great benefits of

the entire planned research park. See 

By stacking the deck in that

way, the Corps was able to justify, on paper, its conclusion that the permit would

have no significant impact and thus avoid having to prepare an environmental-

impact statement at all. Following the admonition in the regulations, the court held

that it was not proper to use a narrower scope for the effects analysis than for the

benefits analysis. That case illustrates the import of § 7(b)(3), but this case is

nothing like that one. Eschewing an evaluation of the effects of building a house

by evaluating each piece of lumber one at a time is obviously different from

evaluating the effects proximately caused by that construction without following

the chain of causation to the ends of the earth.


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       In contrast, the regulations provide, by way of an example, that when the

Corps approves only a portion of a pipeline feeding gas to a power plant, the Corps

is generally not required to consider the impacts of the power plant’s operation.

See 33 C.F.R. pt. 325, app. B § 7(b)(3). But that conclusion cannot logically

depend on the Corps’ never mentioning in its impact statement that the pipeline’s

purpose is to feed gas to the power plant. If that were correct, how would the

Corps explain the project or consider its public benefit without having to consider

all manner of downstream effects way beyond the reasonable scope of required

consideration?

       At bottom, the Corps followed its own regulations in determining the scope

of the NEPA analysis as it did. The Corps’ reasonable interpretation should be

deferred to. See 

–18.

       Our sister circuits have ruled similarly. See 

;

Kentuckians for the Commonwealth v. U.S. Army Corps of Eng’rs, 

(6th Cir. 2014). In these cases, the Corps approved Section 404 permits in

connection with mining operations. In each, an environmental group argued that

the Corps failed to take account of the downstream environmental effects of

mining. In each, the court held that NEPA did not require consideration of those

effects.




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      In Aracoma, the Fourth Circuit appreciated both that “obtaining a § 404

permit is a ‘small but necessary’ component of the overall upland [mining]

project,” and that this fact alone did not give the Corps control and responsibility

over the entire mining project. See 

. Looking to Public

Citizen, and the state’s regulation of coal mining, the court held that “under the

plain language of the [Corps’] regulation, activity beyond the filling of

jurisdictional waters is not within the Corps’ ‘control and responsibility’ because

upland environmental effects are ‘not essentially a product of Corps action.’” 

(citing 33 C.F.R. pt. 325, app. B § 7(b)(2) (2008)). The court added

that, even were it to credit the environmental group’s arguments, it “must still

deem the regulation ‘ambiguous,’ and the Corps’ interpretation would be entitled

to deference.” See 

      In Kentuckians, the Sixth Circuit applied more or less the same analysis in

holding that the Corps was not required “to expand the scope of its review beyond

the effects of the filling and dredging activity to the effects of the entire surface

mining operation as a whole.” 

. Again, the court held that the

Corps’ determination was a reasonable interpretation of those regulations and

entitled to deference. See 

714. It added that the Corps’

interpretation and determination “effectuated in practice” the principles underlying




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the proximate-cause doctrine and rule of reason announced in Metropolitan and

Public Citizen. See 

      These cases are not different merely because they dealt with coal mining

rather than phosphate mining. Although it is true that Congress fleshed out in

more detail the balance between federal and state regulatory control over coal

mining, that same balance functionally exists in the context of phosphate mining.

Florida has authority over phosphate mining, and the Corps has authority only over

U.S. waters. Public Citizen and the Corps’ regulations focus on the Corps’

authority; that authority is the same here as it was in Aracoma and Kentuckians.

      In short, requiring an analysis of the environmental effects of gypstacks in

the context of this case expands NEPA’s environmental consideration in an

unwieldy and indefensible way. Taken to its logical conclusion, that view would

expand consideration of the effects of dredging certain wetlands to require study of

the environmental effects of far-flung activity like the use of fertilization in

commercial farming.

                                          III.

      The Corps otherwise complied with NEPA by issuing an area-wide

environmental-impact statement, which served as the mine-specific impact

statement for each of the four proposed mine sites, and following that up with a

supplemental environmental assessment of the South Pasture Mine Extension,


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before issuing the Section 404 permit related to that mine in a record of decision.

Bio Diversity claims that this process skirted NEPA’s implementing regulations

and that the Corps was required to publish an additional impact statement for the

South Pasture Mine Extension because of alleged new circumstances. Those

claims are without merit.

      Agencies have broad discretion to determine “how best to handle related, yet

discrete, issues in terms of procedures and priorities.” Grunewald v. Jarvis, 

, 905 (D.C. Cir. 2015). The NEPA regulations specifically allow—

indeed, encourage—agencies to consider “[s]imilar actions” together in one

environmental-impact statement where the actions “have similarities that provide a

basis for evaluating their environmental consequences together, such as common

timing or geography.” 40 C.F.R § 1508.25(a)(3). The Corps here determined that

the four proposed mining-related projects were “similar in geographic coverage,

the periods of proposed activity, alternatives, and impacts.” Thus, it was

reasonable for the Corps to conclude that “[t]hese shared characteristics provide an

additional basis for evaluating their environmental consequences in a single

comprehensive [area-wide] EIS [environmental-impact statement].”

      As Bio Diversity agrees, after the Corps prepared an impact statement to

evaluate the environmental impacts of issuing the permit, it was required to publish

a record of its decision, at the time of its decision. 33 C.F.R. § 230.14; 40 C.F.R.


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§ 1505.2. The Corps did not err by preparing in the interim a supplemental

environmental assessment specific to the South Pasture Mine Extension to assist

with its permit decision and confirm that its area-wide impact statement was not

outdated. The NEPA regulations expressly allow for a “broad environmental

impact statement” followed by a “subsequent statement or environmental

assessment,” which need only summarize and incorporate those earlier discussions

by reference. See 40 C.F.R. § 1502.20. Indeed, Bio Diversity concedes that the

Corps may undertake a “tiered” process, in which case “it must follow the

broader—here ‘area wide’—EIS [environmental-impact statement] with a

subsequent site-specific review that at a minimum ensures the agency address all

relevant matters not considered in a previous EIS, and analyzes and substantively

considers new or changed circumstances that bear on the proposed action or its

impacts.” That is precisely what the Corps did here.

      Bio Diversity argues also that—even if procedurally proper—the

supplemental environmental assessment was substantively insufficient because it

(1) did not analyze substantial changes or significant new circumstances that arose

after the Corps finalized the area-wide impact statement, (2) identified impacts in

the area-wide impact statement which were left for but never analyzed in the

supplemental assessment, and (3) never analyzed the impacts of digging out 409

acres of the Payne Creek watershed.


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      As to the purported new circumstances that went unanalyzed between the

area-wide impact statement and the supplemental assessment, Bio Diversity points

to: (i) changes in ownership of the mine, (ii) revisions to the project design and

permit application, (iii) changes to the timing and duration of the mining plan, and

(iv) changes to the compensatory mitigation plan. NEPA requires that an impact

statement be supplemented if “(i) [t]he agency makes substantial changes in the

proposed action that are relevant to environmental concerns; or (ii) [t]here are

significant new circumstances or information relevant to environmental concerns

and bearing on the proposed action or its impacts.” 40 C.F.R § 1502.9. Read in

light of the “rule of reason,” additional information need only be accounted for if

the information would have been useful to the agency’s decisionmaking process.

See Pub. 

. That is to say, the Corps “need not supplement

an EIS [environmental-impact statement] every time new information comes to

light after the EIS is finalized,” as doing so “would render agency decisionmaking

intractable, always awaiting updated information only to find the new information

outdated by the time a decision is made.” See Marsh v. Or. Nat’l. Res. Council,

, 373 (1989).

      None of the purportedly changed circumstances is significant or would

otherwise affect the Corps’ decisionmaking process.




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      Ownership. The Corps persuasively argues that Mosaic’s acquisition of CF

Industries’ Florida phosphate operations is of no significance to the environmental

impacts of the project, because any owner must comply with the same terms of the

permit. The Corps directly acknowledged the change of ownership in the

supplemental assessment and explained that it “did not change the basic or overall

purposes for [the] project.”

      Timing. Bio Diversity claims that inconsistencies in the stated timing of the

project between the area-wide statement and supplemental assessment require

additional analysis. But, as the Corps explains, there is no material inconsistency.

In the area-wide statement, the Corps estimated that mining would take place over

thirteen years; whereas, in the supplemental assessment it approximated fourteen

years. Bio Diversity has not explained how these slightly different estimates have

any bearing on the Corps’ NEPA analysis.

      Revisions to Application. The only significant revisions to the permit

applications that Bio Diversity identifies support, rather than undermine, the

Corps’ decision to prepare a supplemental assessment rather than an entirely new

impact statement. The changes resulted in less extensive environmental impacts

than originally envisioned. An agency is generally not required to conduct a new

environmental analysis when changes result in less harmful environmental effects

than originally anticipated. See Sierra Club v. Van Antwerp, 

, 1360


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(11th Cir. 2008). In any event, the Corps considered the changes and invited

public comment before issuing its supplemental assessment.

      Mitigation Plan. Without offering any specific criticism, Bio Diversity

claims that a supplemental statement was required because of significant changes

to the compensatory mitigation plan. But, as the Corps explains, the area-wide

statement contemplated changes to the mitigation plan for each specific mine,

based on review and modification of the applicants’ suggested plans in

coordination with the EPA. Because these plans are necessarily site-specific, it

was reasonable for the Corps to verify and set out the final mitigation plan in the

record of decision specific to the South Pasture Mine Extension.

      Second, Bio Diversity argues that the Corps failed to meaningfully discuss

its mitigation analysis, but Bio Diversity fails to provide support for that assertion.

The area-wide statement includes an entire chapter on mitigation, and the Corps is

entitled to rely on its own expertise in drawing conclusions within its wheelhouse.

Bio Diversity cannot prove an actionable claim under NEPA and the APA by

asserting baldly that the Corps’ analysis was not meaningful.

      Third, Bio Diversity argues that the Corps failed to analyze the effects of

mining 409 acres within the Payne Creek watershed. But the Corps expressly

relied on its expertise in determining that, given Payne Creek’s size and history,

“mining this relatively small percentage of the overall subwatershed would [not]


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have a measurable additional effect on flows within the subwatershed.” As Bio

Diversity concedes, only significant effects of a proposed action need be analyzed.

Thus, Bio Diversity fails to show that the Corps acted arbitrarily and capriciously

in determining that mining within the Payne Creek would have little if any

measurable effect and need not be analyzed further.

                                          IV.

      Finally, the Corps did not violate § 7(a)(2) of the Endangered Species Act,

which requires each agency to consult with the Fish and Wildlife Service before

taking an “action” to ensure that such action is not likely to jeopardize the

continued existence of any endangered species or its habitat. See 16 U.S.C.

§ 1536(a)(2). The term “action” means “all activities or programs of any kind

authorized, funded, or carried out, in whole or in part, by Federal agencies,”

including the granting of permits or causing indirect modifications to land. See 50

C.F.R. § 402.02. Bio Diversity does not dispute that the Corps consulted with the

Service and obtained a biological opinion concerning its decision to issue a Section

404 permit for the South Pasture Mine Extension. Rather, Bio Diversity argues

that completing the area-wide environmental-impact statement constituted an

“agency action”—separate from the permitting decision—that required its own

formal consultation under the Act.




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      The Corps’ area-wide statement did not, however, constitute an “agency

action” that required consultation with the Service independent of the Corps’ later

issuance of the Section 404 permit. An impact statement is the culmination of an

agency’s NEPA analysis, which is performed in furtherance of some other agency

action, here the issuance of a permit. It makes no sense to say the NEPA analysis

constitutes an agency action separate and apart from the action that triggers that

review in the first place.

      Bio Diversity’s attempts to characterize the area-wide impact statement as a

programmatic agency action are not persuasive. To be sure, an agency’s

establishment of a program, which binds, funds, or directs subsequent action may

constitute an “agency action.” For instance, in Florida Key Deer v. Paulison, this

court held that the Federal Emergency Management Agency’s administration of

the National Flood Insurance Program was an agency action that triggered

§ 7(a)(2) review because it set a framework that would direct future land

management decisions and thus “effectively authoriz[ed] . . . development that

pushed the Key deer to the brink of extinction.” 

, 1139 (11th Cir.

2008). Similarly, in Cottonwood the Ninth Circuit held that the Forest Service’s

promulgation of standards for permitting activities that could adversely affect

Canada lynx qualified as an agency action under the Endangered Species Act. See

Cottonwood Envtl. Law Ctr. v. U.S. Forest Serv., 

, 1085 (9th Cir.


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2015). These cases, and the others cited by Bio Diversity, hold that setting

guidelines to direct or cabin future agency action may constitute a programmatic

action that triggers consultation under § 7(a)(2).

      But the area-wide impact here did nothing of the sort—it did not direct or

authorize the Corps’ substantive decision to issue the Section 404 permit under the

Clean Water Act or otherwise bind the agency to take any future action. It merely

disclosed the Corps’ environmental analysis of four proposed permitting actions

(each one of which would require its own § 7(a)(2) consultation). Thus, the Corps’

area-wide environmental-impact statement did not constitute an “agency action”

that required consultation under § 7(a)(2) of the Endangered Species Act.

                                          V.

      For these reasons, the judgment of the district court is affirmed.




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MARTIN, Circuit Judge, concurring in part and dissenting in part:

      Piles of a radioactive waste product called phosphogypsum lie across 3,200

acres in Bone Valley, Florida. To date, over 1 billion tons of phosphogypsum

loom over the flat Floridian landscape. These mountains of waste are a monument

to the lasting environmental impact of Florida’s phosphate fertilizer industry.

      The land in Bone Valley is rich in phosphate. Mosaic, a fertilizer

manufacturer, mines 17.1 million tons of phosphate there each year. Mosaic turns

this phosphate into fertilizer at four Mosaic fertilizer plants, also located in Bone

Valley.

      This process generates more hazardous waste than it does fertilizer. The

making of one ton of fertilizer-ready phosphate leaves five tons of phosphogypsum

byproduct behind. Phosphogypsum has no beneficial use, so Mosaic heaps it in

massive outdoor “stacks.” These stacks are often built on top of old phosphate

mines and wherever else Mosaic owns “unused” land in Bone Valley. To dispose

of phosphogypsum, Mosaic pumps gallons of phosphogypsum-water “slurry” into

huge reservoirs on top of the stacks. Over time, this slurry hardens into a crust,

raising the stack and its basin for wastewater. A fully grown stack is as big as a

square mile and as tall as 300 feet high.

      In the past 30 years, there have been five “major” spills of phosphogypsum-

tainted water from stacks in Bone Valley. Tens of millions of gallons of


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phosphogypsum-tainted wastewater have gushed into local rivers, creeks,

wetlands, and aquifers. In 1997, a phosphogypsum spill into Florida’s Alafia River

poisoned 42 miles of its water, killing more than one million baitfish and shellfish,

72,900 gamefish, and 377 acres of trees and vegetation. 1

       I dissent today because I believe the Army Corps of Engineers had a duty to

consider the environmental impact of Mosaic’s phosphogypsum stacks before it

granted a permit needed for Mosaic to mine phosphate. Otherwise, I readily join

parts III and IV of the majority opinion. The majority correctly concludes that the

Army Corps of Engineers (“the Corps”) consulted with the Fish and Wildlife

Service, as required by the Endangered Species Act. I also agree with the majority

that the Corps did not violate the National Environmental Policy Act (“NEPA”)

when it declined to publish a separate environmental impact statement for the

South Pasture Mine Extension.

       However, I believe the Corps’ environmental impact statement violates

NEPA. As a result, I would sustain the challenge to that document. NEPA

requires federal agencies to consider indirect environmental effects of major

actions. See 42 U.S.C. § 4332; 40 C.F.R. § 1508.8(b). Indirect effects are those

that are “reasonably foreseeable.” 40 C.F.R. § 1508.8(b). This record makes quite


       1
          See Craig Pittman, The Clock is Ticking on Florida’s Mountains of Hazardous
Phosphate Waste, Sarasota Magazine, Apr. 26, 2017, https://www.sarasotamagazine.com/
articles/2017/4/26/florida-phosphate.
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clear that it was more than reasonably foreseeable that granting a permit under

section 404 of the Clean Water Act to Mosaic would result in the creation of more

phosphogypsum. Mosaic told the Corps it needed the § 404 permit to mine

phosphate for its fertilizer plant. And again, every single ton of fertilizer-ready

phosphate sourced from Mosaic’s mines produces five tons of radioactive

phosphogypsum. Thus, it is undeniable that issuing a permit to Mosaic’s

phosphate mine would add to the stacks of phosphogypsum already piled high

across central Florida. Yet, the Corps did not consider phosphogypsum as an

indirect effect in the environmental impact statement at issue here.

      I view the Corps’ reasons for failing to consider phosphogypsum as an

indirect effect as arbitrary and capricious. See Marsh v. Or. Nat. Res. Council, 

, 377, 

, 1861 (1989). In order to hold otherwise, the

majority opinion turns a blind eye to the record here, and expands upon the

argument actually made by the Corps. I part ways with the majority opinion on

four points. First, this record makes clear that phosphogypsum production was a

reasonably foreseeable effect of the § 404 permit that enabled Mosaic to mine

phosphate for fertilizer. Second, the Corps violated its own NEPA procedures

when it considered the benefits of fertilizer manufacturing without considering its

environmental impacts, including the production of radioactive phosphogypsum.

Third, other agencies’ oversight of phosphogypsum did not relieve the Corps of its


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obligation to consider the environmental effects. Finally, the Corps has underlying

statutory authority to consider phosphogypsum as an indirect effect under NEPA.

                                          I.

      The majority opinion is mistaken in concluding that the production of

phosphogypsum was not a reasonably foreseeable consequence of granting Mosaic

a § 404 Clean Water Act permit, and thus not an “indirect effect” the Corps needed

to consider under NEPA. Maj. Op. at 7–10. Aside from being at odds with the

record before us, this conclusion could allow agencies to avoid their obligations to

address important environmental impacts on projects within their jurisdiction.

      To begin, the majority opinion glosses over whether the Corps could

reasonably foresee production of phosphogypsum. It first reasons that “fertilizer

production takes place far from and long after” Mosaic uses its § 404 permit to

mine phosphate. Maj. Op. at 8. But this is exactly how NEPA defines “indirect

effects.” Indirect effects are “caused by the action and are later in time or farther

removed in distance,” but still “reasonably foreseeable.” See 40 C.F.R.

§ 1508.8(b) (defining indirect effects). The fact that phosphogypsum production

occurs after the phosphate has been mined and in a different place does not mean it

is not a reasonably foreseeable indirect effect.

      Beyond that, the record shows that Mosaic’s entire operation—from

phosphate mining, to beneficiation, to production of phosphoric acid and


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phosphogypsum—takes place right in Bone Valley. Granted, Mosaic owns tens of

thousands of acres in Bone Valley. But the extraordinary scale on which Mosaic

produces fertilizer makes its production of phosphogypsum more foreseeable, not

less.

        The majority opinion hypothesizes about the fertilizer market, the regulatory

landscape, and Mosaic’s business plans. See Maj. Op. at 10. It predicts that

changes in the wider world could distance phosphogypsum from Mosaic’s

phosphate mining. It supposes that because phosphogypsum stacks would exist

without Mosaic producing phosphogypsum, the stacks should not be considered as

environmental effects. See Maj. Op. at 12. But these hypothesized facts cannot

properly relieve the Corps of its obligation to consider environmental effects

altogether. For example, the Corps should surely consider environmental effects

on fish when a river is dredged and filled, even if those fish might also exist in

different waters or if dredging and filling operations ongoing elsewhere would

harm them.

        The majority opinion is forced to reason based on hypothetical facts because

the actual facts cannot support its conclusion. There is overwhelming evidence,

acknowledged by the Corps—but not referenced in the majority opinion—that

Mosaic would produce millions of tons of phosphogypsum byproduct as a result of

the dredging and filling permit for its phosphate mine. The operation of this


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phosphate mine clearly results in the production of phosphogypsum. Indeed, this

fact is more than reasonably foreseeable. It is obvious and certain.

      The record undermines the majority opinion’s theories that Mosaic’s

phosphate mining was separate from its fertilizer production. In Mosaic’s initial

application for a permit, it plainly told the Corps that it would have to “cease

operations” at its fertilizer plant “unless it is able to acquire economically viable

phosphate rock from some unknown future source in order to continue operating

it.” It continued: “Mining existing reserves [in Florida] is the only viable long-

term solution to meeting this need” for phosphate ore. When Mosaic amended its

application some time later, it again acknowledged its dependence on mining to

continue its fertilizer production operations. As for the possibility of running the

fertilizer plants on imported phosphate, Mosaic’s applications made clear that this

would not work long-term. Importing phosphate “does not,” as Mosaic explained,

“provide for a predictable business model or allow for evaluation of risk, as

[Mosaic] would have no control of the essential raw material needed for phosphate

fertilizer production.” As a result, Mosaic said importing rock “is neither

reasonable nor practicable” from a business standpoint.

      Mosaic told the Corps that its fertilizer plants “would not be able to compete

in the phosphate crop nutrient market if they were required to pay for imported

phosphate rock.” Mosaic explicitly tied its ability to mine to the permit it was


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seeking: “the viability of the remaining four [fertilizer plants] is dependent upon

the ability to continue phosphate ore mining and phosphate rock production . . . ,

which in turn depends on issuance of the pending 404 Permit applications.”

      Thus, Mosaic’s own words belie the conjecture in the majority opinion that

Mosaic might stop producing fertilizer with the phosphate it mined. Mosaic’s

words also deflate the idea that it would not need to mine phosphate, using the

§ 404 permit, in order to produce fertilizer. Certainly, this record shows that it was

at least reasonably foreseeable to the Corps that granting a permit to Mosaic would

result in production of phosphogypsum from Mosaic’s fertilizer plants. The

Corps’ decision to ignore the environmental effects of phosphogypsum based on

the idea that it did not foreseeably result from granting Mosaic a § 404 permit is

simply not supported.

                                         II.

      Beyond running counter to the record evidence, the Corps’ decision not to

account for the indirect effects of phosphogypsum violated its own regulations.

The Corps’ environmental impact statement sang the praises of the fertilizer

industry as a reason to award Mosaic a § 404 permit, yet it failed to consider the

industry’s known environmental impacts—like phosphogypsum. This, despite the

Corps’ own regulations that require it to weigh both the benefits and impacts of

fertilizer manufacturing equally, without placing its thumb on the scale.


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      The Corps has regulations implementing its NEPA responsibilities. See 33

C.F.R. pt. 325, app. B. Those regulations establish certain procedures for

considering the environmental effects of granting permits. And these procedures

require the Corps “[i]n all cases” to use the same “scope of analysis” for

“analyzing both impacts and alternatives” as for “analyzing the benefits of a

proposal.” 33 C.F.R. pt. 325, app. B(7)(b)(3) (emphasis added). This requirement

thus dictates how the Corps must frame the scope of its analysis when making

environmental impact statements. See 40 C.F.R. § 1508.25 (defining the scope of

analysis for environmental impact statements); 33 C.F.R. pt. 325, app. B(7)(b).

      The Corps’ NEPA implementation procedures require it to conduct an

environmental analysis for portions of the project “over which the [Corps] has

sufficient control and responsibility to warrant Federal review.” 33 C.F.R. pt. 325,

app. B(7)(b)(1), (2). The procedures offer several examples of what this means.

For example, the implementation procedures say the Corps

need not do a NEPA review of the effects of an electric plant if the only Clean

Water Act permit necessary for the project relates solely to a “fill road,” and the

electric plant will not otherwise impact United States waters. 

admonition to use the same scope of analysis for impacts and benefits in all cases

follows these examples. 

this admonition to qualify what’s come

before. See, e.g., Edison v. Douberly, 

, 1310 (11th Cir. 2010)


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(interpreting words “in a manner consistent with their plain meaning and context”).

The regulations thus call for the Corps to use a broader scope of review for

environmental impacts whenever it uses that same broader scope of review for

benefits. This is so even if its regulations would not otherwise require

consideration of those impacts.

      The Corps was required to consider phosphogypsum here. It framed the

public benefits of the phosphate mine in terms of its importance to fertilizer

production. It noted that nearly all the phosphate rock mined in the United

States—more than 95% of it, to be precise—is used to make wet phosphoric acid,

which has phosphogypsum as a byproduct. And it factored in economic impacts

on the phosphate industry far removed from mining as part of the public’s need for

the project. For example, as one “substantial indirect effect of the mining,” the

Corps pointed to benefits related to “the export of finished phosphate products and

fertilizer through the Port of Tampa each year, [which] contribut[e] significantly to

making the port the state’s largest in tonnage shipped and about the 10th largest in

the nation.”

      The majority opinion concludes the Corps did not violate its own regulations

because it simply “explained why phosphate ore is mined in the first place.” Maj.

Op. at 24. But the Corps went much further: it analyzed the economic benefits of

fertilizer production as an indirect effect of granting Mosaic a § 404 permit. Yet in


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the same document it refused to analyze the impact of phosphogypsum, a

byproduct of the fertilizer, as an indirect effect. The NEPA implementation

regulations do not allow the Corps to have it both ways. That is, it cannot consider

the broad downstream economic benefits of mining and fertilizer production, and

then ignore the environmental impacts associated with those benefits. Its own

regulations require it to do more. See 33 C.F.R. pt. 325, app. B(7)(b).

      The majority opinion says it defers to the Corps’ decision to overlook

phosphogypsum as an interpretation of its own regulations. However, the Corps

itself gave no official interpretation of its own regulations that would warrant this

deference. See Auer v. Robbins, 

, 461, 

, 911 (1997)

(holding that an agency’s interpretation of its own regulations is “controlling”

unless “plainly erroneous or inconsistent with the regulation” (quotation marks

omitted)). Without an agency interpretation, not even one offered “in the form of a

legal brief,” see 

117 S. Ct. at 912, the Corps’ failure to analyze

environmental impacts of fertilizer manufacturing does not merit deference.

      The majority opinion goes on to insist that the Corps did not exercise

“sufficient control and responsibility” over Mosaic’s manufacturing of phosphate-

based fertilizer, so the Corps did not have to consider any effects of fertilizer

production. Maj. Op. at 21–27. I agree the Corps is not required to analyze the

impacts of activities over which it lacks “sufficient control and responsibility.”


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But it must home its analysis in on the “specific activity requiring a” permit. 33

C.F.R. pt. 325, app. B(7)(b)(1). And it is not free to disregard the impacts of

activities over which it has no control when it chooses to count the benefits of

those same activities. This required balance effectuates NEPA’s purpose of

ensuring informed decision-making. See 

, 109 S. Ct. at

1858. The majority’s approach, which allows consideration of endless benefits

without concomitant consideration of the impacts associated with those benefits,

thwarts this purpose.

      In short, this record does not support the majority’s conclusion that the

Corps followed its own procedures. The Corps did not do its job when it failed to

consider phosphogypsum as an indirect environmental effect of Mosaic’s § 404

permit.

                                         III.

      The majority opinion not only sanctions the Corps’ wayward decision to

overlook phosphogypsum’s environmental effects for the reason that fertilizer

production was somehow unforeseeable. The opinion also holds that the Corps

could not have considered phosphogypsum because it altogether lacked the

statutory authority to do so. Maj. Op. at 12–18. But this exceeds any disclaimer

the Corps made on its own behalf. Instead, the Corps initially said it did not

consider phosphogypsum because other state and federal agencies regulate it and


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those agencies therefore more directly cause the environmental effects of

phosphogypsum.

      Thus, when the majority opinion holds that the Corps had no statutory

authority at all to consider phosphogypsum, it transforms the argument made by

the Corps, and at the same time deals a blow to NEPA. I discuss each aspect of the

majority opinion in turn.

                                           A.

      The Corps decided it need not account for environmental effects of

phosphogypsum because other agencies more directly regulated these

environmental effects. As I understand it, the Corps is assigning responsibility for

the effects of pollution not to the polluter, but to other agencies that regulate the

polluter. The idea is that the manner in which other agencies regulate the polluter

ultimately delivers the pollution. But this notion ignores the Corps’ own

responsibility to monitor and regulate polluters. And the fact that other agencies

have regulatory responsibilities in this area does not mean the Corps is relieved of

its own duties. See Sierra Club v. Fed. Energy Regulatory Comm’n (“Sabal

Trail”), 

, 1375 (D.C. Cir. 2017) (“[T]he existence of permit

requirements overseen by another federal agency or state permitting authority

cannot substitute for a proper NEPA analysis.”). NEPA requires the Corps to

answer the question of whether some downstream impact should count as an


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indirect effect, and the answer turns on whether it is “reasonably foreseeable.” 40

C.F.R. § 1508.8(b). Another agency’s jurisdiction over an effect does not make

the effect unforeseeable. Cf. Sabal 

.

      The majority opinion concludes “the existing regulatory landscape over

phosphogypsum,” overseen by the EPA and the state of Florida, sets

phosphogypsum out of the Corps’ reach. Maj. Op. at 12. But this conclusion puts

NEPA entirely out of business. Given our robust “administrative state with its

reams of regulations,” there will always be another agency regulating a potential

environmental harm. See Alden v. Maine, 

, 807, 

,

2291 (1999) (Souter, J., dissenting). NEPA does not ask agencies to consider only

novel environmental effects that are not otherwise addressed by the administrative

state. NEPA requires agencies to consider direct, indirect, and cumulative

environmental effects, full stop. See 40 C.F.R. §§ 1508.7, 1508.8.

      The majority relies on Department of Transportation v. Public Citizen, 

, 

(2004), and Ohio Valley Environmental Coalition v.

Aracoma Coal Co., 

(4th Cir. 2009), to support its conclusion that

Florida and the EPA’s regulation of phosphogypsum means it is not a foreseeable

environmental effect that the Corps must consider. See Maj. Op. at 13–17, 26–28.

These cases do not support this conclusion. Public Citizen and Aracoma Coal

address unique factual contexts that implicate federalism and constitutional


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presidential power. Those facts are not at issue in our more run-of-the-mill case

here.

        Public Citizen held that the Federal Motor Carrier Safety Administration

(“FMCSA”) did not violate NEPA when it did not consider the environmental

effects of the President’s decision to honor treaty obligations and allow Mexican

motor carriers into the United 

, 

,

2218. The North American Free Trade Agreement (“NAFTA”) required the

United States to admit trucks from Mexico, despite American concerns that those

trucks were unsafely regulated. 

124 S. Ct. at 2211. To comply with

NAFTA, the President directed the FMCSA to set new safety standards and admit

Mexican trucks that met those standards. 

124 S. Ct. at 2211. Public

Citizen thus addressed the circumstance in which the decision whether to admit

Mexican trucks was entirely out of the FMCSA’s control. 

124 S. Ct.

at 2218. Even if the FMCSA considered the environmental impacts of allowing

trucks from Mexico, this data could not have changed its duty to comply with

NAFTA and the President’s order to admit the trucks. See 

124 S. Ct. at

2216.

        Public Citizen does not control here. The EPA and the state of Florida’s

primary oversight of phosphogypsum stacks is a far cry from the unilateral

authority a president has to enter into binding treaties. Also, in contrast to the


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FMCSA, the Corps is charged with undertaking a public-interest review of § 404

permits and it enjoys discretion to grant or deny those permits based on

environmental concerns. See 33 C.F.R. § 320.4(a) (prescribing public-interest

review of permits issued by the Corps); Sabal 

(Brown, J.,

concurring in part and dissenting in part) (concluding Public Citizen does not apply

where the agency has “broad discretion” under public-interest review to account

for environmental impacts). The Corps is empowered to deny § 404 permits if it

determines the permit’s impact on “general environmental concerns,” “water

quality,” or “the needs and welfare of the people” would be against “the public

interest.” 33 C.F.R. § 320.4. The power of the FMCSA to deny entry to Mexican

motor carriers for environmental reasons had been bargained away by treaty. See

Public 

, 124 S. Ct. at 2217. In contrast, the Corps has the

power to, and must, consider environmental effects when issuing Clean Water Act

permits.

      Neither does Aracoma Coal support the majority’s holding. In Aracoma

Coal, the Fourth Circuit held that NEPA did not require the Corps to assess the

environmental impact of a mining project seeking a § 404 permit to fill stream

. The court was faced with reconciling NEPA and the

Surface Mining Control and Reclamation Act of 1977, a federal statute that gave

states “exclusive jurisdiction over the regulation of surface coal mining and


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reclamation operations on non-Federal lands . . . .” 

(quotation marks

omitted). Thus, Aracoma Coal addressed an “environmental review process that

has already been delegated to federally approved state programs.” 

We

do not address a program under the Surface Mining Act here, and Florida does not

have “exclusive jurisdiction” to regulate phosphogypsum.2 See 

       To the contrary, here there is no comprehensive scheme of state regulation

that would remove the Corps’ power to consider broad environmental effects of

phosphate mining, fertilizer production, and phosphogypsum. As it must, the

majority opinion recognizes that Florida and the EPA regulate phosphogypsum

concurrently. Maj. Op. at 15. Thus, the Corps would not trample on a careful

federalist balance, like the one addressed in Aracoma Coal, by considering the

environmental impact of phosphogypsum.

       Neither Public Citizen nor the mere fact that another agency has jurisdiction

changes the reality that Mosaic’s phosphate mine will create more phosphogypsum

to feed the existing stacks in Bone Valley. The Corps’ refusal to analyze



       2
          The majority also relies on Kentuckians for the Commonwealth v. U.S. Army Corps of
Engineers, 

(6th Cir. 2014), authored by our visiting colleague on his home court.
See 

Maj. Op. at 26–27. Like Aracoma Coal, Kentuckians does not bear on this case.
Kentuckians holds that NEPA did not require the Corps to consider the environmental impact of
a surface mining project. 

, 713–14. Like Aracoma Coal, the Kentuckians
decision hinged on the federalist balance struck in the Surface Mining Act. See 

(“Congress has granted exclusive jurisdiction over the regulation of surface mining [to]
Kentucky . . . . The Corps, in light of the entire project’s approval under the more comprehensive
[Surface Mining Act], did not abuse its discretion in limiting the scope of its NEPA review.”).
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phosphogypsum as an indirect effect cannot be excused by other agencies’ ability

to oversee it.

                                           B.

      I now turn to the majority’s conclusion that the Corps altogether lacked

statutory authority to consider phosphogypsum as an indirect effect of enabling

Mosaic’s phosphate mining. See Maj. Op. at 12–18. To start, this holding provides

an explanation for the Corps’ actions that the Corps did not give itself. See Motor

Vehicle Mfrs. Ass’n of U.S., Inc. v. State Farm Mut. Auto. Ins. Co., 

,

43, 

, 2867 (1983) (“We may not supply a reasoned basis for the

agency’s action that the agency itself has not given.” (quotation marks omitted)).

But setting aside that the Corps did not advance the argument made in the majority

opinion, the argument cannot withstand scrutiny in any event.

      The majority says the Clean Water Act allows the Corps to deny a § 404

permit for one reason only: environmental effects from dredged and fill material

discharged into U.S. waters. Maj. Op at 12, 16–17 (citing 33 U.S.C. § 1344(c)

(giving the Corps authority over § 404 permits)). To arrive at this conclusion, the

majority relies on Public Citizen’s holding that an agency is not required to

consider environmental effects where the agency “has no ability to prevent a

certain effect due to its limited statutory authority.” 541 U.S. at 

. Thus the majority opinion reasons that since the Corps could not deny a


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§ 404 permit for any reason other than dredging and filling, it did not have to

consider any environmental effects beyond dredging and filling. Maj. Op. at 16–

17. This logic continues: phosphogypsum is not a dredged and fill material

discharged into U.S. waters, so the Corps had no statutory authority to consider its

environmental effects. Maj. Op. at 15–16.

      Again, I reject this justification. Certainly, the Corps has authority to

consider the environmental effects of phosphogypsum. It can even deny dredging

and filling permits based on the production of phosphogypsum. That is because

the implementing regulations of the Clean Water Act give the Corps the power to

deny a dredging and filling permit when potential impacts on “general

environmental concerns,” “water supply and conservation,” and “water quality”

outweigh “[t]he benefits which reasonably may be expected to accrue” from the

proposed activity. 33 C.F.R. § 320.4(a)(1) (guiding the Corps’ “decision whether

to issue a permit”). This record shows that radioactive phosphogypsum stacks

tower above Florida water sources, and these stacks have spilled waste into the

surrounding waters. Production of more phosphogypsum is a clearly foreseeable

result of Mosaic’s phosphate mining and fertilizer operation. The Corps should

have assessed the environmental impact that leaky phosphogypsum stacks might

have on U.S. waters and the environment at large before granting Mosaic its

permit.


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      I fear the majority’s holding does damage to the Clean Water Act’s

implementing regulations. In support of its conclusion, the majority opinion says

these implementing regulations improperly “manufacture additional agency

power.” Maj. Op. at 17. Despite the clear statement in the regulations that the

“decision whether to issue a permit will be based on” factors like “conservation”

and “general environmental concerns,” see 33 C.F.R. § 320.4(a)(1), the majority

says this regulation does not empower the Corps to deny a permit for general

environmental reasons. This cannot be right.

      Even if I were to accept the majority’s premise that the Corps’ authority to

issue § 404 permits under the Clean Water Act must turn only on considerations of

dredging and filling, see Maj. Op. at 16, the text of the Clean Water Act still

requires the Corps to give a “hard look” under NEPA to the broader effects of the

dredging. “Courts have consistently held that the Corps’ NEPA obligations when

issuing a § 404 dredge and fill permit . . . extend beyond consideration of the

effects of the discharge of dredged or fill material in jurisdictional waters.” Sierra

Club, Inc. v. Bostick, 

, 1063 (10th Cir. 2015) (McHugh, J.,

concurring); see also O’Reilly v. U.S. Army Corps of Eng’rs, 

, 232–34

(5th Cir. 2007) (holding that NEPA required the Corps to consider the

environmental effects of increased auto traffic when authorizing dredging and

filling to construct a residential subdivision); Save Our Sonoran, Inc. v. Flowers,


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, 1118, 1122 (9th Cir. 2005) (holding the Corps must consider the

environmental impact of an entire residential subdivision before granting a permit

to fill natural waterways running through the subdivision). Simply put, “[a]lthough

the Corps’ permitting authority is limited to those aspects of a development that

directly affect jurisdictional waters, it has responsibility under NEPA to analyze all

of the environmental consequences of a project. . . . The Corps’ responsibility

under NEPA to consider the environmental consequences of a permit extends even

to environmental effects with no impact on jurisdictional waters at all.” 

.

      Requiring the Corps to consider the environmental implications of the

underlying project benefited by dredging and filling is true to NEPA and the

realities of our “human environment.” See 42 U.S.C. § 4332(C) (explaining

agencies’ NEPA obligations). Considering the entire project preserves NEPA’s

“information-forcing” purpose by airing the environmental consequences of the

entire endeavor. See Sabal 

. This approach recognizes that

environmental consequences do not occur in a vacuum. See, e.g., Erin E. Prahler

et al., It All Adds Up: Enhancing Ocean Health by Improving Cumulative Impacts

Analyses in Environmental Review Documents, 33 Stan. Envtl. L.J. 351, 354

(2014) (“The environmental effects caused by human activities do not occur

independently of one another.”). And evaluating the entire project is consistent


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with the Corps’ authority to issue permits “based on an evaluation of the probable

impacts . . . of the proposed [dredging and filling] activity and its intended use on

the public interest.” See 33 C.F.R. § 320.4(a)(1) (emphasis added). As the record

clearly shows, Mosaic intended to use its § 404 permit to mine phosphate for

fertilizer. The Corps had the authority to consider the environmental effects that

emanate from this permit.

                                         IV.

      This Court is duty-bound to enforce NEPA when an agency strays from it.

See Sabal 

–68. I do not believe the Corps honored its

obligations under NEPA. Because none of the reasons the Corps gave for

excluding consideration of phosphogypsum comply with NEPA, I would invalidate

the environmental impact statement and send it back to the Corps to prepare a new

one. The Corps should have articulated a NEPA-compliant reason for excluding

phosphogypsum from consideration or else considered it as an indirect effect. I

respectfully dissent.




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