OPINION
In thеse expedited petitions for review, we consider the allegations of Native Village of Point Hope et al. and Inupiat Community of the Arctic Slope (collectively, “petitioners”) that the Bureau of Ocean Energy Management (BOEM) failed to discharge its obligations under the Outer Continental Shelf Lands Act (OCSLA) in approving Shell Offshore Inc.’s plan for exploratory oil drilling in the Beaufort Sea. We have jurisdiction pursuant to 43 U.S.C. § 1349(c), and we deny the petitions. 1
I
This case is the latest chapter in a long-running saga beginning back in April 2002, when the Minerals Management Service (MMS)
2
established a five-year lease sale schedule for the outer continental shelf оf Alaska.
Alaska Wilderness League v. Kempthorne,
A
In enacting the Outer Continental Shelf Lands Act (OCSLA), 43 U.S.C. §§ 1331-1356a, Congress authorized the Secretary
Only the exploration plan stage and the leaseholder’s obligations under OCSLA are at issue here. In general, the applicable regulations require the leaseholder to submit specified information about its proposed exploration plan. 30 C.F.R. § 550.211-228. Within thirty days of the leaseholder’s submission or last modification of the exploration plan, the Secretary “shall approve” the plan if it is consistent with OCSLA, its implementing regulations, and the applicable lease, 43 U.S.C. § 1340(c)(1), unless the Secretary determines that the proposed activity “would probably cause serious harm or damage to life ..., to property, to any minerаl ..., to the national security or defense, or to the marine, coastal, or human environment,” id. § 1334(a)(2)(A)(i), and that “such proposed activity cannot be modified to avoid such condition,” id. § 1340(c)(1); see also 30 C.F.R. § 550.233.
While OCSLA focuses on development of the outer continental shelf, the Clean Water Act § 311, as amended by the Oil Pollution Act of 1990, focuses on the prevention of and response to oil spills. See 33 U.S.C. § 1321. Among other things, § 311 requires a leaseholder to submit an oil spill response plan, which is “a plan for responding, to the maximum extent practicable, to a worst case discharge, and to a substantial threat of such a discharge, of oil or a hazardous substance.” Id. § 1321(j)(5)(A)(i). Offshore fаcilities “may not handle, store, or transport oil unless” the leaseholder’s oil spill response plan “has been approved by the President” and the “facility is operating in compliance with the plan.” Id. § 1321 (j)(5)(F)(i) — (ii).
At the time Shell began its leasing and exploration efforts, MMS was in charge of conducting lease sales, reviewing exploration plans under OCSLA, and approving oil spill response plans under § 311 of the Clean Water Act. Following the Deepwater Horizon oil spill in the Gulf of Mexico in early 2010, the Secretary divided MMS’s responsibilities among three new regulatory entities in order to separate the “three distinct and conflicting missions” of (1) promoting rеsource development, (2) enforcing safety regulations, and (3) maximizing revenues from offshore operations. Press Release, U.S. Dep’t of the Interior, Salazar Divides MMS’s Three Conflicting Missions (May 19, 2010),
available at
http://www.doi.gov/news/pressreleases/ Salazar-Divides-MMSs-ThreeConflicting-Missions.cfm;
see also
76 Fed. Reg. 64,432; DOI Secretarial Order No.
B
Although a winning bidder in the Beaufort Sea lease sale in 2003, Shell has yet to commence exploration activities. In November 2006, Shell submitted an exploration plan for the Beaufort Sea region.
Alaska Wilderness League,
In May 2011, after the Secretary lifted the moratorium on drilling, Shell submitted a revised exploration plan to BOEM and a revised oil spill response plan to BSEE.
5
In the revised exploration plan, Shell proposed drilling two wells at its Sivulliq prospect and two wells at its Torpedo prospect in the Beaufort Sea during the July 10 to October 31 drilling season. On August 3, 2011, after conducting a NEPA review of the drilling activities contemplated in the revised exploration plan, BOEM issued a Finding of No Significant Impact. The agency concluded “that no
In these expedited petitions, petitioners challenge BOEM’s approval of Shell’s revised exploration plan. Petitioners claim that BOEM erred in approving the plan for three reasons. First, they claim that Shell’s revised exploration plan did not meet the informational standards set by OCSLA and the regulations, because (1) it failed to reference an approved oil spill response plan as required by 30 C.F.R. § 550.219(a) and (2) did not contain an adequate description of Shell’s well-capping stack and containment system as required by 30 C.F.R. § 550.213(d). 7 Second, they claim that BOEM erred by failing to reconcile conflicting evidence regarding the feasibility of well-capping technology and the amount of time it takes to drill a relief well in the event of a well blowout and oil spill. Finally, they claim that BOEM erred by approving the revised exploration plan subject to conditions.
II
BOEM’s decision “to approve, require modification of, or disapprove any exploration plan” is “subject to judicial review only in a United States court of appeals for a circuit in which an affected State is located.” 43 U.S.C. § 1349(c)(2). The reviewing court “shall consider the matter under review solely on thе record made before the Secretary,” and BOEM’s findings, “if supported by substantial evidence on the record considered as a whole, shall be conclusive.”
Id.
§ 1349(c)(6). In addition to the standard of review established by OCSLA, BOEM’s approval of an exploration plan is a final agency action subject to review under § 706 of the Administrative Procedure Act (APA). Under this standard, we may set aside BOEM’s approval only if it is “arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law.” 5 U.S.C. § 706(2)(A). Review under the arbitrary and capricious standard is deferential. We will not vacate an agency’s decision unless it has “relied on factors Congress did not intend it to consider, entirely failed to consider an important aspect of the problem, or offered an explanation [for that decision] that runs counter to the evidence before the agency or is so implausible that it could not be ascribed to a difference in view or the product of agency expertise.”
Lands Council v. McNair,
While OCSLA gives appellate courts jurisdiction over challenges to B OEM’s approval of an exploration plan, BSEE’s decisions regarding oil spill prevention, response, and liability are committed to a separate review process in the district court.
See
33 U.S.C. § 1321(n). We have interpreted § 1321 (n) as a grant of exclusive original jurisdiction to the district court to review an oil spill response plan.
Edwardsen v. U.S. Dep’t of the Interior,
III
We begin by considering petitioners’ claim that BOEM erred in approving Shell’s exploration plan because the plan did not include all the information required under OCSLA and the implementing regulations. Petitioners point to two alleged errors: first that the exploration plan did not meet the requirements for informing BOEM about its oil spill response plan, and second that the exploration plan’s discussion of its proposed well-capping stack and containment system was incomplete. We discuss each issue in turn.
A
Petitioners first claim that BOEM’s approval of Shell’s exploration plan was arbitrary and capricious because the plan failed to comply with the regulatory requirement that an exploration plan include a “[rjeference” to an approved regional oil spill response plan, as well as “a comparison of the appropriate worst case discharge scenario in [the applicant’s] approved regional [oil spill response plan] with the worst case discharge scenario that could result from [the applicant’s] proposed exploration activities.” 30 C.F.R. § 550.219(a)(2), (iv). 8
Nevertheless, BSEE’s approval of the revised spill response plan on March 28, 2012, renders petitioners’ challenge to this inconsistency in the exploration plan moot. “The basic question in determining mootness is whether there is a present controversy as to which effective relief can be granted.”
Nw. Envtl. Def. Ctr. v. Gordon,
We also reject petitioners’ argument (which is, in any event, waived because it was raised for the first time at oral argument) that Shell amended its oil spill response plan after submitting it to BSEE, and that therefore the spill plan approved by BSEE included different oil spill trajectories, equipment, fleet size, and techniques than did the spill plan discussed in the exploration plan. Given that petitioners conceded at oral argument that Shell’s amendments to the approved 2012 spill plan did not change the worst case discharge numbers discussed in the exploration plan, these differences are not relevant, and therefore this argument also fails.
In light of BSEE’s approval of Shell’s revised plan in March 2012, we dismiss petitioners’ claim as moot.
B
We next сonsider petitioners’ assertion that BOEM erred in approving Shell’s exploration plan because the plan included a well-capping stack and containment system as part of its proposed response to oil spills, but did not provide all the information required under the OCSLA regulations. Specifically, 30 C.F.R. § 550.213(d) requires an exploration plan to include “[a] description and discussion of any new or unusual technology (see definition under § 550.200) you will use to carry out your proposed exploration activities.”
9
The regulations define “new or unusual technology” to include equipment or proce
We agree that the well-capping stack and containment system described in Shell’s exploration plan meets the definition of new and unusual tеchnology because the system has never been used in BOEM’s Alaska region or in Arctic drilling conditions.
See
30 C.F.R. § 550.200. Nevertheless, we reject petitioners’ argument that BOEM was arbitrary and capricious in approving the plan, because BOEM could reasonably conclude that the exploration plan provided an adequate description and discussion of the technology. The exploration plan’s seven-paragraph explanation of the well-capping stack and containment system included a description of the design (blowout preventer equipped with spacer spools and rams for pumping kill weight fluid into the well, with all equipment designed for conditions found in the Arctic), proposed location (warm-stored aboard a designated vessel in Alaska), and planned implementation of the technology. Given the deference we owe BOEM’s interpretation of its own regulations, we cannot say that BOEM acted arbitrarily or capriciously in concluding that this description and discussion satisfied the informational requirements of 30 C.F.R. § 550.213(d).
See Auer v. Robbins,
IV
We next turn to petitioners’ argument that BOEM erred in approving the exploration plan because the agency did not explain how it reconciled inconsistencies in Shell’s 2011 plan regarding the feasibility of the proposed well-capping stack and containment system and the time for drilling a relief well.
Petitioners first argue that BOEM erred in not explaining how it reconciled Shell’s statements in its pre-2011 oil spill response plans that “proven technology is not available” for well capping and “well capping would not be an effective option for regaining well control while operating from a moored vessel,” with its statement in the 2011 exploration plan that “subsea capping equipment and containment capabilities ... would be implemented if all other kick control methods fail.” We disagree.
First, there is no statutory or regulatory requirement that BOEM include a statement identifying and reconciling inconsistent positions taken by a permit applicant. Nor does BOEM’s failure to do so make its approval of the exploration plan arbitrary and capricious under the APA. While an agency must present an adequate explanation for a decision that contradicts the agency’s previous decision,
see, e.g., Humane Soc’y v. Locke,
More important, BOEM’s failure to expressly address Shell’s changed position on well-capping technology does not cast doubt on BOEM’s decision that the activities in the exploration plan will not “probably cause serious harm or damage to life (including fish and other aquatic life), to property, ... or to the marine, coastal, or human environment.”
See
43 U.S.C. §§ 1334(a)(2)(A)®, 1340(c)(1);
see also
30 C.F.R. §§ 550.202, 550.233. First, the well-capping stack and containment system challenged by petitioners is not the sole means identified in the exploration plan for responding to a well blowout and oil spill. Rather, Shell has several response tools at its disposal, including surface control options and relief well capabilities. As BOEM reasonably concluded, “Shell’s proposed subsurface collection system will be an added tool for responding to a potential well control incident whеre fluids flow and will increase response preparedness, but is not necessary or required to comply with” the regulations. Second, BOEM’s conclusion that well-capping technology is now feasible in the Arctic is supported by substantial evidence in the record.
See
43 U.S.C. § 1349(c)(6). BOEM found that “[s]ubsea containment technology has been successfully used in the past,” including by Shell at the NaKika and Mars sites and by British Petroleum during the Deepwater Horizon spill, and that “most major components for such a system are available and have been field tested.” Whether well-capping technology is now feasible in the Arctic is a technical issue that lies squarely within the agenсy’s scientific expertise and, therefore, is accorded great deference by a reviewing court.
See Ctr. for Biological Diversity,
B
We apply similar reasoning to petitioners’ contеntion that BOEM acted arbitrarily and capriciously when it approved the exploration plan without reconciling evidence in the record that runs contrary to Shell’s estimate of the time necessary to drill a relief well. Petitioners argue that Shell’s estimate for the time it will take to drill the planned production wells is far longer than its estimate for the time it will take to drill an emergency relief well, and they further argue that Shell “failed to provide the agency any rational explanation for why it expects to drill a relief well so much faster.” 11
We reject petitioners’ contention that BOEM acted arbitrarily by failing to state on the record how it rеconciled these different estimates. As noted above, there is no requirement that BOEM do so. Moreover, BOEM’s decision to rely on Shell’s time estimate for drilling relief wells was “supported by substantial evidence on the record considered as a whole” and is therefore “conclusive.” 43 U.S.C. § 1349(c)(6). The well control plan submitted as a part of Shell’s exploration plan explained that it would take a shorter time to drill relief wells than to drill exploratory wells because “[rjelief well drilling is rapid,” relief wells “intercept a deep blowout at some point above the total vertical depth,” which saves time, and in an emergency situation “all avаilable resources are quickly accessed and funneled into drilling the relief well and killing the blowout as quickly as possible.” BOEM’s conclusion that Shell provided a realistic estimate of the time it would take to drill a relief well is a technical issue that lies squarely within the agency’s scientific expertise and is therefore entitled to “great deference.”
Ctr. for Biological Diversity,
V
Finally, we consider petitioners’ argument that BOEM acted arbitrarily by approving Shell’s exploration plan on the condition that Shell provide additional information about the “procedures for deployment, installation!,] and operation of the system under anticipated environmental conditions.” This argument likewise fails. As noted above, BOEM must approve an exploration plan that is consistent with OCSLA and its implementing regulations unless the proposed activity will “probably cause serious harm or damage to life (including fish and other aquatic life), to property, ... or to the marine, coastal, or human environment.” 43 U.S.C. §§ 1334(a)(2)(A)(i), 1340(c)(1);
see also
30 C.F.R. § 550.233. BOEM takes the position that after approving a plan, it may still “require [the applicant] to meet certain conditions, including those to provide monitoring information.” 30 C.F.R. § 550.233(b)(1).
12
According to BOEM, its
VI
The Secretary’s recent division of MMS’s responsibilities between BSEE and BOEM makes it clear that BOEM’s duty here is limited. Within the thirty days provided by statute, BOEM had to determine whether Shell’s exploration plan complied with OCSLA’s requirements and would not “probably cause serious harm or damage” to life, property or the human, marine, or coastal environment. 43 U.S.C. §§ 1334(a)(2)(A)®, 1340(c)(1); see also 30 C.F.R. §§ 550.202, 550.233. Here, BOEM’s decision that Shell’s exploration plan complied with OCSLA’s requirements is entitled to dеference and is supported by the record as a whole. We deny the expedited petitions. 13
DENIED.
Notes
. In a separate memorandum disposition filed concurrently with this opinion, we deny expedited petitions challenging BOEM’s decision to approve an exploration plan for Shell Gulf of Mexico Inc. to drill for oil in the Arctic Ocean's Chukchi Sea. Because of the expedited nature of this case, no motions to stay the mandate will be granted. Petitions for rehearing and rehearing en banc may be filed with respect to this opinion.
. In May 2010, the Secretary of the Interior separated and reassigned the responsibilities of the former Minerals Management Service (MMS) to three separate divisions: the Bureau of Ocean Energy Management (BOEM), the Bureau of Safety and Environmental Enforcement (BSEE), and the Office of Natural Resources Revenue. DOI Secretarial Order No. 3299, sec. 8 (May 19, 2010). While the formal reorganization was underway, the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE), rather than MMS, functioned as the umbrella organization for the now-separated divisions. DOI Secretarial Order No. 3302 (June 18, 2010) (changing the name of MMS to BOEMRE). Although the Secretary's reorganization plan was not fully implemented until October 2011, see 76 Fed.Reg. 64,432 (Oct. 18, 2011), after the date of approval of Shell's еxploration plan at issue here, we follow the parties' lead by referring to the regulatory divisions within BOEMRE as BOEM and BSEE throughout this opinion.
. The required permits include inter alia an approval of an oil spill response plan under the Clean Water Act, 33 U.S.C. § 1321, a National Pollutant Discharge and Elimination System (NPDES) permit under the Clean Water Act, id. § 1342, a dredge-and-fill permit under the Clean Water Act, id. § 1344, an air quality permit under the Clean Air Act, 42 U.S.C. § 7661a, a permit to drill, 43 U.S.C. § 1340, 30 C.F.R. § 250.1617, and a range of state approvals.
. The Office of Natural Resource Revenue was made responsible for revenue collection.
. Among other things, Shell's revisions responded to two Notices to Lessees issued by the Secretary of the Interior in 2010 after the Deepwater Horizon incidеnt. One notice required leaseholders to include additional information in the worst case discharge scenarios of their exploration plans and development plans, see NTL No. 2010-N06 (June 18, 2010). The other informed leaseholders that BSEE would evaluate "whether each operator has submitted adequate information demonstrating that it has access to and can deploy containment resources that would be adequate to promptly respond to a blowout or other loss of well control,” see NTL No. 2010-N10 (Nov. 8, 2010).
. We take judicial notice of this approval.
See Interstate Nat'l Gas Co. v. S. Cal. Gas Co.,
. Shell's proposed well-capping stack and containment system involves “subsea devices used on the top of the well” that will either seal the well or divert the flow from the well to a surface vessel with a containment system equipped for separation and disposal of hydrocarbons.
. Section 550.219 provides:
The following information regarding potential spills of oil (see definition under 30 CFR 254.6) and hazardous substances (see definition under 40 CFR part 116) as applicable, must accompany your EP:
(a) Oil spill response planning. The material required under paragraph (a)(1) or (a)(2) of this section:
(1) An Oil Spill Response Plan (OSRP) for the facilities you will use to conduct your exploration activities prepared according to the requirements of 30 CFR part 254, sub-part B; or
(2) Reference to your approved regional OSRP (see 30 CFR 254.3) to include:
(i) A discussion of your regional OSRP; (ii) The location of your primary oil spill equipment base and staging area; (iii) The name(s) of your oil spill removal organization(s) for both equipment and personnel;
(iv) The calculated volume of your worst case discharge scenario (see 30 CFR 254.26(a)), and a comparison of the appropriate worst case discharge scenario in your approved regional OSRP with the worst case discharge scenario that could result from your proposed exploration activities; and
(v) A description of the wоrst case discharge scenario that could result from your proposed exploration activities (see 30 CFR 254.26(b), (c), (d), and (e)).
Shell did not attach a copy of a facility-specific oil spill response plan to its exploration plan under 30 C.F.R. § 550.219(a)(1). It therefore must satisfy the alternate requirements of § 550.219(a)(2).
. Section 550.213(d) provides:
The following general information must accompany your EP: ...
(d) New or unusual technology. A description and discussion of any new or unusual technology (see definition under § 550.200) you will use to carry out your proposed exploration activities. In the public information copies of your EP, you may exclude any proprietary information from this dеscription. In that case, include a brief discussion of the general subject matter of the omitted information. If you will not use any new or unusual technology to carry out your proposed exploration activities, include a statement so indicating.
. To the extent petitioners are making the more substantive argument that BOEM erred by failing to analyze the technical feasibility of the well-capping stack and containment system, their argument fails. BOEM's review does not extend to such issues, which are considered by BSEE when reviewing and approving Shell’s oil spill response plan,
see
30 C.F.R. part 254, and application for permit to drill,
id.
§ 250.417.
See Edwardsen,
. Specifically, Shell estimated that it would take 44 days to drill the planned wells at its Torрedo prospect but only 25 days to drill an emergency well at the Torpedo site, and that it would take 34 days to drill the planned wells at its Sivulliq prospect, but only 20 days to drill a relief well at the site.
. Section 550.233(b)(1) provides that within thirty days of the exploration plan’s submission or last modification,
the Regional Supervisor will take one of the following actions:
The regional supervisor will (1) approve your EP, [i]f [i]t complies with all the applicable requirements, [a]nd then [t]he Regional Supervisor will notify you in writing of the decision and may require you to meetcertain conditions, including those to provide monitoring information.
(ellipses omitted).
. Because we deny the expedited petitions, we do not reach petitioner's argument regarding whether a proper remedy for a deficiency is vacatur or remand.
