Conservation Law Foundation, Inc. v. Busey ( 1996 )


Menu:
  • UNITED STATES COURT OF APPEALS
    FOR THE FIRST CIRCUIT
    No. 92-1335
    CONSERVATION LAW FOUNDATION, INC.,
    Petitioner,
    v.
    JAMES BUSEY, ADMINISTRATOR,
    FEDERAL AVIATION ADMINISTRATION, ET AL.,
    Respondents.
    No. 92-1464
    TOWN OF NEWINGTON, NEW HAMPSHIRE,
    Petitioner,
    v.
    DEPARTMENT OF TRANSPORTATION, ET AL.,
    Respondents.
    ON PETITION FOR REVIEW OF AN ORDER
    OF THE FEDERAL AVIATION ADMINISTRATION
    No. 95-1019
    CONSERVATION LAW FOUNDATION, INC.,
    Plaintiff - Appellant,
    v.
    DEPARTMENT OF THE AIR FORCE, ET AL.,
    Defendants - Appellees.
    No. 95-1020
    TOWN OF NEWINGTON, NEW HAMPSHIRE,
    Plaintiff - Appellant,
    v.
    DEPARTMENT OF THE AIR FORCE, ET AL.,
    Defendants - Appellees.
    No. 95-1047
    CONSERVATION LAW FOUNDATION, INC.,
    AND TOWN OF NEWINGTON, NEW HAMPSHIRE,
    Plaintiffs - Appellees,
    v.
    DEPARTMENT OF THE AIR FORCE, ET AL.,
    Defendants - Appellees.
    STATE OF NEW HAMPSHIRE, AND
    PEASE DEVELOPMENT AUTHORITY,
    Defendants - Appellants.
    No. 95-1048
    CONSERVATION LAW FOUNDATION, INC.,
    Plaintiff - Appellee,
    v.
    DEPARTMENT OF THE AIR FORCE, ET AL.,
    Defendants - Appellants.
    APPEALS FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF NEW HAMPSHIRE
    [Hon. Martin F. Loughlin, Senior U.S. District Judge]
    -2-
    Before
    Selya and Cyr, Circuit Judges,
    and Schwarzer,* Senior District Judge.
    Lewis M.  Milford,  with whom  Mark A.  Sinclair, Robert  A.
    Backus and Backus, Meyer & Soloman were on brief for Conservation
    Law Foundation.
    Perry  M.  Rosen,  with  whom   Dana  C.  Nifosi,  Cutler  &
    Stanfield, Malcolm R.  McNeill, Jr.  and McNeill  & Taylor,  P.A.
    were on brief for Town of Newington, New Hampshire.
    Jeffrey P. Kehne, Attorney,  Environment & Natural Resources
    Division, U.S. Department of Justice, with whom Lois J. Schiffer,
    Assistant Attorney General, Beverly Sherman Nash, Richard Sarver,
    Edward  J. Shawaker,  Attorneys, Environment &  Natural Resources
    Division, U.S. Department of Justice, Douglas J. Heady, Office of
    the  General Counsel,  Department  of the  Air  Force, Daphne  A.
    Fuller, Attorney,  Office of the Chief  Counsel, Federal Aviation
    Administration, and  John R. Michaud, Office  of General Counsel,
    U.S.  Environmental  Protection Agency,  were  on  brief for  the
    federal parties.
    Donald  W. Stever,  with  whom Jeffrey  R. Howard,  Attorney
    General, Steven M. Houran, Deputy Attorney General, Office of the
    Attorney  General,  Environmental  Protection  Bureau,  and Dewey
    Ballantine,  were on brief for  State of New  Hampshire and Pease
    Development Authority.
    April 2, 1996
    April 2, 1996
    *     Of  the   Northern  District  of   California,  sitting  by
    designation.
    -3-
    SCHWARZER,  Senior  District  Judge.   We  must  decide
    SCHWARZER,  Senior  District  Judge.
    whether   defendants   have   complied   with   various   federal
    environmental  laws that apply to the conversion of land on Pease
    Air  Force Base (Pease) in New Hampshire to civilian use incident
    to the base's closure.  The  United States Air Force entered into
    a  long-term lease of a portion  of the base to Pease Development
    Authority (PDA).   Concerned about the  resulting effects on  the
    clean up of hazardous wastes  on the base and the air  quality in
    the area, the Conservation  Law Foundation (CLF) and the  Town of
    Newington, New Hampshire  (Newington) challenge  the Air  Force's
    decision to lease the  property and the support of  that decision
    by  other federal agencies.   CLF and Newington  contend that the
    Air Force and the  Environmental Protection Agency (EPA) violated
    section  176(c) of the  Clean Air Act (CAA),  42 U.S.C.   7506(c)
    (Supp. III 1991), section 102(2)(c) of the National Environmental
    Policy Act (NEPA),  42 U.S.C.    4332(2)(C)  (1988), and  section
    120(h)(3)   of   the   Comprehensive    Environmental   Response,
    Compensation  and Liability Act  (CERCLA), 42 U.S.C.   9620(h)(3)
    (1988).    PDA, the  State of  New  Hampshire, and  several other
    interested parties have intervened and,  along with the Air Force
    and the EPA, oppose the relief sought.
    In  a lengthy  opinion  ruling on  the parties'  cross-
    motions for summary judgment, the  district court found that  the
    Air Force had violated  NEPA and CERCLA and directed it to submit
    a Supplemental Final Environmental Impact Statement (Supplemental
    FEIS),  including  a  remedial  design  for  contaminated parcels
    -4-
    covered  by  the lease.    The district  court  denied injunctive
    relief,   however,   and   dismissed   all    remaining   claims.
    Conservation  Law Found. v. Department  of the Air  Force, 
    864 F. Supp. 265
     (D.N.H. 1994).
    Plaintiffs have  appealed from the  dismissal of  their
    CAA  claims and  the denial  of injunctive  relief.   The federal
    defendants  have   cross-appealed  from  the  finding  that  they
    violated CERCLA, but have not appealed the district court's order
    directing them to prepare a Supplemental FEIS.  We have appellate
    jurisdiction under 28  U.S.C.   1291.  We reverse the judgment in
    so  far as it  found a CERCLA  violation but affirm  in all other
    respects.
    Also before us are petitions filed by CLF and Newington
    to review an order of  the Federal Aviation Administration  (FAA)
    approving PDA's  airport development plan.   We have jurisdiction
    under  49 U.S.C.  app.    1486(a)  and  deny the  petitions  with
    respect  to the  CAA claim  and retain  jurisdiction of  the NEPA
    claim pending completion of the Supplemental FEIS.
    I.  BACKGROUND FACTS
    I.  BACKGROUND FACTS
    Acting under  the Base  Closure and Realignment  Act of
    1988 (the Base  Closure Act), Pub. L. No. 100-526, 
    102 Stat. 2627
    (1988)  (codified as amended at 10 U.S.C.    2687 (1988 & Supp. V
    1993)),  the Air  Force  closed Pease  in  March 1991.    Located
    adjacent  to Newington  and Portsmouth,  New Hampshire,  the base
    occupies some 4,200 acres and comprises extensive facilities that
    supported  Air Force  operations, including  a  runway.   PDA was
    -5-
    created  as an agency  of the State  of New Hampshire  to acquire
    certain  parcels of  land  within the  base  and to  develop  and
    implement a plan for their reuse.  It ultimately developed a plan
    envisioning  a  commercial   airport,  light  industry,   various
    commercial uses, retail space, and open space.
    In preparation for the transfer of land to PDA, the Air
    Force in February  1990 launched  the process  of complying  with
    applicable  environmental  requirements.    The  details  of  the
    process  are set out at  length in the  district court's opinion,
    see 
    864 F. Supp. at 270-72
    , and a summary will suffice here.  In
    February  1991, the  Air  Force published  a Draft  Environmental
    Impact Statement  (DEIS)  on  which  CLF and  the  EPA  submitted
    comments mainly addressing  air quality concerns.  In April 1991,
    the  Air Force entered  into a  Federal Facility  Agreement (FFA)
    with  the EPA  and the  State of New  Hampshire spelling  out its
    environmental  obligations incident  to  the transfer.   In  June
    1991,  the  Air  Force  prepared  a  Final  Environmental  Impact
    Statement  (FEIS).   The FEIS  stated that,  although development
    under  the  plan,  including   the  increased  traffic  it  would
    generate,  would not result in violations of state or federal air
    quality standards,  it would have  an impact  on New  Hampshire's
    ability to achieve the ozone precursor reductions required by the
    CAA.  To resolve  these air quality  concerns, PDA, the EPA,  and
    the New Hampshire Department of Environmental Services (NHDES) on
    August 1, 1991, entered into a Memorandum of Understanding (MOU).
    The  EPA then issued its comments on the FEIS, stating that while
    -6-
    the  project  would reduce  New  Hampshire's  ability to  achieve
    compliance  with  the  CAA,  the MOU  provided  a  framework  for
    compliance.
    As required by the Base Closure Act, the Air Force then
    prepared its  initial Record  of Decision (ROD),  documenting its
    decisions regarding the closure  of Pease and the disposition  of
    the   property.     The  ROD   addressed,  among   other  things,
    environmental issues,  including the  CAA's requirement  that the
    project conform with the  New Hampshire State Implementation Plan
    (SIP)  and  CERCLA's requirement  that  the  Air Force  undertake
    certain remedial measures to clean up contaminated sites prior to
    the transfer of those sites to  PDA.  See 42 U.S.C.   7506(c)(1);
    42 U.S.C.   9620(h)(3).
    Because  the  PDA  plan  contemplated  civilian airport
    operations, FAA approval was  required under the Surplus Property
    Act  of  1944,  50 U.S.C.  app.     1622(g) (1988)  (subsequently
    recodified at  49  U.S.C.      47151-47153  (Supp.  1994)).    In
    February  1992, the FAA issued  an ROD approving  elements of the
    plan  and  recommending  that  the  Air  Force  proceed  with its
    proposed transfer of property to PDA.
    In March  1992, CLF filed  this action in  the district
    court, alleging that the  Air Force and the EPA had  violated the
    CAA and NEPA.  In June 1992, Newington filed its action asserting
    the same claims, as well as  a claim under CERCLA.  These actions
    were later consolidated.  CLF and  Newington also filed petitions
    in this court for review of the FAA's February 1992 ROD, alleging
    -7-
    that  the FAA  violated NEPA  and  the CAA.   The  petitions were
    stayed pending the outcome of  the district court proceedings and
    are now before us along with the appeals from the judgment below.
    While  these  actions  were  pending,  the  Air   Force
    continued to pursue the administrative proceedings preparatory to
    the transfer.   In  March 1992,  it issued a  Memorandum for  the
    Record updating  its earlier conformity determination.   In April
    1992, it issued a Supplemental ROD in which it rendered its final
    determination  concerning  the  disposal  of the  Pease  parcels,
    including an acknowledgment that remedial action  on contaminated
    areas  had to be completed before it could transfer those parcels
    by deed.  The Air Force then prepared a Preliminary Environmental
    Survey and,  on the basis of the survey, issued its Finding of No
    Significant Impact (FONSI).  In April 1992, the Air Force entered
    into a 55-year lease  and contract of conveyance to  PDA covering
    these parcels.
    II.  SCOPE OF REVIEW
    II.  SCOPE OF REVIEW
    We review de novo the district court's grant of summary
    judgment,  Town of Norfolk v. United States Army Corps of Eng'rs,
    
    968 F.2d 1438
    ,   1445  (1st   Cir.  1992),  as   well  as   its
    interpretation of the  controlling statutes, United  Technologies
    v. Browning Ferris Indus., 
    33 F.3d 96
    , 98 (1st Cir. 1994),  cert.
    denied,  
    115 S. Ct. 1176
     (1995).   Review of the district court's
    grant or denial of injunctive relief, in so far as it involves no
    question of law, is for abuse of discretion.  Sunshine Dev., Inc.
    -8-
    v. FDIC, 
    33 F.3d 106
    , 111 (1st  Cir. 1994;  Narragansett  Indian
    Tribe v. Guilbert, 
    934 F.2d 4
    , 54 (1st Cir. 1991).
    Regarding   our  review   of   the  district   court's
    assessment of the  record on  which agency action  was based,  we
    have  taken "a practical  approach to  deciding what  standard of
    review to apply."   Sierra Club v. Marsh, 
    976 F.2d 763
    , 769 (1st
    Cir.  1992).  When the  district court's judgment  turns upon its
    own  assessment of evidence, "or even upon lengthy district court
    proceedings in  which knowledgeable counsel explain  the agency's
    decision-making  process  in  detail,  we will  show  appropriate
    hesitation  to overturn  that  judgment. .  .  . But,  where  the
    district  court simply  reviews  a set  of agency  documents and,
    applying  the same  legal standard  as we  apply here,  reaches a
    particular  legal  conclusion  about the  'reasonableness'  of an
    agency's action, we have greater legal freedom to differ with the
    district court's ultimate  characterization of agency  behavior."
    Sierra Club  v. Marsh, 
    769 F.2d 868
    , 872 (1st Cir.  1985).  With
    these principles in mind, we turn to the merits of the appeal.
    III.  THE CLEAN AIR ACT CLAIMS
    III.  THE CLEAN AIR ACT CLAIMS
    The purpose of the CAA, as the district court observed,
    is  "to protect and enhance the Nation's air quality, to initiate
    and  accelerate a  national program  of research  and development
    designed  to  control air  pollution,  to  provide technical  and
    financial assistance  to the States in the execution of pollution
    control programs,  and to  encourage the development  of regional
    pollution  control programs."  See 
    864 F. Supp. at
    273 (citing 42
    -9-
    U.S.C.    7401(b)  (1988)).    Pursuant  to  the  Act,  the   EPA
    established  National  Ambient  Air  Quality   Standards  (NAAQS)
    reflecting  the   maximum  concentration  levels   of  particular
    pollutants  (criteria pollutants)  allowable  to  protect  public
    health.   See 42 U.S.C.   7409 (Supp. III 1991).  Among them were
    NAAQS for ozone and  carbon monoxide, both of which  are relevant
    here.   See 40 C.F.R.     50.8, 50.9 (1995).   Responsibility for
    achieving  and maintaining the  NAAQS falls on  the states, which
    are  required   to  submit  state  implementation   plans  (SIPs)
    specifying the manner in which they will achieve and maintain the
    NAAQS for the various criteria pollutants.   See 42 U.S.C.   7407
    (1988 & Supp. III 1991).
    The  EPA  and  the  states  have  designated  different
    regions  according to the  level of  criteria pollutants  in each
    area.   See 42 U.S.C.    7407(d)(1)(A).   A region which  has not
    attained the NAAQS for a certain criteria pollutant is designated
    a  "nonattainment"   area;  a   region  about  which   there  are
    insufficient  data  to determine  compliance  with  the NAAQS  is
    designated  "unclassified"  and  deemed  in  compliance  with the
    NAAQS.  See 
    id.
       At the time the decisions challenged  here were
    made,  the  Portsmouth-Dover-Rochester  region, where  the  Pease
    project is located, was designated a "serious nonattainment" area
    for ozone and an "unclassified" area for carbon monoxide.  See 40
    C.F.R.   81.330 (1991).
    For   serious  nonattainment   areas  for   ozone,  the
    statutory  deadline for attaining the NAAQS is November 15, 1999.
    -10-
    42  U.S.C.    7511(a)(1) (Supp.  III 1991).   To  ensure progress
    toward that goal, the  1990 amendments to the CAA  require states
    to revise their SIPs in  a manner that will result in  attainment
    of both the ultimate  deadline and interim milestones established
    by the 1990  amendments.  See 42 U.S.C.    7511a(c)(2) (Supp. III
    1991).
    To  further  promote  attainment   of  the  NAAQS   for
    different  criteria pollutants,  the 1990  amendments also  added
    specific criteria to section 7506(c)(1) (section 176(c)(1) of the
    CAA), the conformity  provision of the  Act, to wit,  subsections
    (A) and (B)(i)-(iii).   See S. Rep. No. 101-228, 101st  Cong., 2d
    Sess.  28 (1990), reprinted in 1990 U.S.C.C.A.N. 3385, 3414.  The
    conformity provision prohibits federal agencies from approving or
    supporting any activity which does not conform to  an SIP.  Under
    the  new criteria,  conformity means  that the activity  will not
    cause  new  violations, increase  the  frequency  or severity  of
    violations,   or   delay   attainment   of   various   standards,
    requirements, and milestones.  See 42 U.S.C.   7506(c)(1)(B).
    Plaintiffs claim that  the EPA, the  Air Force and  the
    FAA  violated the  conformity provision.   Plaintiffs  make three
    arguments: (1) that no determination of conformity could  be made
    until NEPA had  been complied with;  (2) that  the EPA failed  to
    make a conformity determination;  and (3) that the Air  Force and
    the FAA  violated the substantive requirements  of the conformity
    provision.  As  a preliminary  matter, however,  we must  address
    -11-
    PDA's contention  that the  district court lacked  subject matter
    jurisdiction over plaintiffs' CAA claims.
    A.  Subject Matter Jurisdiction
    A.  Subject Matter Jurisdiction
    Plaintiffs   assert   that   jurisdiction  over   their
    conformity  determination claims  exists  under the  citizen suit
    provision of  the CAA, 42  U.S.C.   7604(a)(1) (1988  & Supp. III
    1991), or in the  alternative, under the Administrative Procedure
    Act  (APA),  5 U.S.C.    702  (1988).    Defendants dispute  that
    jurisdiction exists under either provision.  We address first the
    knotty question of whether  jurisdiction exists under the citizen
    suit  provision;   if  it does,  jurisdiction  under the  APA  is
    precluded.   See  5  U.S.C.    704  (1988) ("Agency  action  made
    reviewable  by statute and final agency action for which there is
    no  other  adequate remedy  in a  court  are subject  to judicial
    review" under  the APA  (emphasis added)).    See Oregon  Natural
    Resources Council v.  United States Forest  Serv., 
    834 F.2d 842
    ,
    851  (9th Cir. 1987); Allegheny County Sanitary Auth. v. EPA, 
    732 F.2d 1167
    ,  1177 (3d  Cir. 1984);  Environmental Defense  Fund v.
    Tidwell, 
    837 F. Supp. 1344
    , 1355-57 (E.D.N.C. 1992) (APA provides
    a  right  of  review  of   agency  decisions  precisely  where  a
    plaintiff's  claim is not covered by  the citizen suit provisions
    of the substantive act).
    1.  The Citizen Suit Provision, 42 U.S.C.   7604.
    1.  The Citizen Suit Provision, 42 U.S.C.   7604.
    We  addressed  the issue  of citizen  suit jurisdiction
    over claims of violation of the  conformity provision once before
    in Conservation  Law Found.  v. Federal Highway  Admin., 24  F.3d
    -12-
    1465  (1st Cir.  1994)  (CLF).   Although  we held  citizen  suit
    jurisdiction  to  extend  to   the  conformity  provision  claims
    asserted there, we cautioned  that because the "issue is  a close
    one.  . .  . [and]  because the  outcome of  [the] case  does not
    depend upon [the] jurisdictional  ruling, this Court remains free
    to revisit the issue in a  future case where it may be decisive."
    
    Id.
     at 1478 n.6.  We do so now.
    a.  Legislative History  and Precedent.  "In enacting
    a.  Legislative History  and Precedent.
    [the  citizen suit]  provision, Congress  expanded federal  court
    jurisdiction  by  circumventing  the  diversity  of  citizenship,
    jurisdictional  amount,  and traditional  standing requirements."
    Wilder v. Thomas, 
    854 F.2d 605
    , 613 (2d Cir. 1988), cert. denied,
    
    489 U.S. 1053
     (1989).  See  S. Rep. No. 91-1196,  91st Cong., 2d
    Sess. 64 (1970), reprinted  at Natural Resources Defense Council,
    Inc.  v. Train, 
    510 F.2d 692
    , 725, Appendix  B (D.C. Cir. 1974).
    Prior   to  the   enactment  of   the  citizen   suit  provision,
    "[g]overnment initiative in  seeking enforcement under the  Clean
    Air Act [had] been  restrained."  S. Rep. No.  91-1196, reprinted
    at 510  F.2d at 723.   By authorizing citizens to  bring suit for
    violations   of  CAA  standards,  Congress  sought  to  "motivate
    governmental agencies  charged with  the responsibility to  bring
    enforcement  and abatement proceedings."   Id.  In recognition of
    the  fact that  "[f]ederal facilities  generate considerable  air
    pollution,"  the  citizen  suit  provision allowed  suits  to  be
    "brought against an  individual or  government agency."   Id.  at
    724.
    -13-
    As Congress opened the  door to citizen suits, however,
    it also sought to  limit that jurisdiction to claims  that "would
    not require reanalysis  of technological or other  considerations
    at  the enforcement stage" and  would have to  meet "an objective
    evidentiary  standard."  Id.   To  that end,  Congress "carefully
    restricted   [citizen  suit   jurisdiction]   to  actions   where
    violations  of standards and regulations or a failure on the part
    of officials to act are alleged."  Id. at 723.
    Conscious of the concerns  expressed in the legislative
    history,  courts  interpreting  citizen  suit  jurisdiction  have
    largely focused on whether the particular standard or requirement
    plaintiffs sought  to enforce  was sufficiently specific.   Thus,
    interpreting citizen suit jurisdiction  as limited to claims "for
    violations  of  specific  provisions   of  the  act  or  specific
    provisions  of an  applicable  implementation  plan," the  Second
    Circuit  held  that  suits can  be  brought  to enforce  specific
    measures,  strategies,   or   commitments  designed   to   ensure
    compliance with the NAAQS, but not to enforce the NAAQS directly.
    See,  e.g., Wilder, 
    854 F.2d at 613-14
    .   Courts have repeatedly
    applied this test  as the linchpin of  citizen suit jurisdiction.
    See, e.g., Coalition Against  Columbus Ctr. v. City of  New York,
    
    967 F.2d 764
    , 769-71 (2d Cir. 1992); Cate v. Transcontinental Gas
    Pipe  Line Corp.,  
    904 F. Supp. 526
    ,  530-32 (W.D.  Va.  1995);
    Citizens  for a  Better Env't  v. Deukmejian, 
    731 F. Supp. 1448
    ,
    1454-59 (N.D. Cal.), modified, 
    746 F. Supp. 976
     (1990).
    -14-
    Our  decision in  CLF  and  plaintiffs' arguments  have
    therefore focused  on whether the conformity  provision meets the
    requisite level of specificity to serve as the basis of a citizen
    suit.  Before  asking whether the conformity provision passes the
    specificity test,  however, we must consider  the threshold issue
    whether  the  conformity  provision   falls  within  one  of  the
    statutory categories  of violations  for which citizen  suits are
    authorized.
    b.  Terms of the Statute.  The CAA permits any person
    b.  Terms of the Statute.
    to bring a  civil action "against any person . . . who is alleged
    to  have violated  or to  be in violation  of .  . .  an emission
    standard or  limitation under this  chapter . .  . ."   42 U.S.C.
    7604(a)(1)(A).  An "emission standard or limitation" is defined
    as "a  schedule or timetable of  compliance, emission limitation,
    standard  of performance or emission  standard . .  . which is in
    effect   under  this  chapter  .  .  .  or  under  an  applicable
    implementation plan."   42 U.S.C.   7604(f)(1) (Supp.  III 1991).
    The additional definitions  in subsections (2), (3),  and (4) are
    not  applicable here.1   Thus, citizen  suit jurisdiction  over a
    violation of the  conformity provision is subject  to a two-prong
    test:  (1)  the  conformity  provision  must  be  a  schedule  or
    1    Subsections  (2)  and (3)  deal  with  controls, conditions,
    prohibitions  and requirements related to specific situations and
    provisions  not  at  issue  here.    Subsection  (4)  deals  with
    conformity requirements under  an SIP and does  not apply because
    the requirements were not  incorporated into New Hampshire's plan
    at the material times;  the only relevant conformity requirements
    were those  in  effect  under the  Act  itself.   See  42  U.S.C.
    7604(f)(2)-(4).
    -15-
    timetable  of  compliance,   emission  limitation,  standard   of
    performance, or emission standard,  and (2) it must be  in effect
    under this  chapter or an  applicable implementation  plan.   See
    Cate,  
    904 F. Supp. at 529
    .  The  conformity provision meets the
    second prong; as a provision of the Act, it is clearly "in effect
    under the Act."  See CLF, 24 F.3d at 1477.   The sole question is
    whether the conformity provision  qualifies as (1) a  schedule or
    timetable  of  compliance,  (2)  an emission  limitation,  (3)  a
    standard of  performance, or (4)  an emission standard,  as these
    terms are defined by other provisions of the Act.  If it does not
    fall within one of these four cat categories, there is no citizen
    suit jurisdiction over the conformity provision claims.
    (i) Emission Limitation/Emission  Standard.   Section
    (i) Emission Limitation/Emission  Standard.
    7602(k)  defines the  terms  "emission  standard"  and  "emission
    limitation" to  mean "a requirement  established by the  State or
    the   Administrator  which   limits   the   quantity,  rate,   or
    concentration  of emissions  of  air pollutants  on a  continuous
    basis . . . ."   42 U.S.C.    7602(k) (Supp. III 1991); see  also
    40 C.F.R.   51.100(z) (1991) (EPA's regulations implementing  the
    CAA).  The conformity provision is not "a requirement established
    by the State or the Administrator";  it is a provision of the CAA
    enacted by Congress.   And  while the provision  seeks to  ensure
    conformity with  existing emission  standards or  limitations, it
    does  not itself limit emissions of air  pollutants.  Thus, it is
    not an emissions limitation or standard.
    -16-
    (ii)    Standard  of Performance.    Section  7602(l)
    (ii)    Standard  of Performance.
    defines "standard of performance" as "a requirement of continuous
    emission  reduction,  including any  requirement relating  to the
    operation  or  maintenance  of  a  source  to  assure  continuous
    emission  reduction."   42  U.S.C.    7602(l)  (1988 &  Supp. III
    1991).   CLF argues that  the conformity provision  constitutes a
    "standard of  performance" within the meaning  of section 7602(l)
    because it prohibits a federal agency from supporting an activity
    unless that activity is  "consistent with 'reducing' the severity
    and number of  violations in  a nonattainment area  and will  not
    delay timely attainment of any required emission reductions."  In
    support of its argument, CLF relies upon this court's decision in
    CLF, 
    24 F.3d 1465
    , to which we now turn.
    In that case plaintiff  challenged the Federal  Highway
    Administration's  approval of  a highway  project on  the ground,
    among others, that it  violated the conformity provisions  of the
    CAA.    Unlike the  instant case,  CLF  involved conformity  of a
    transportation plan subject to section 7506(c)(3).  Under section
    7506(c)(3)(A)(iii),  a  transportation  plan  or  program  is  in
    conformity  if it  contributes to  annual emission  reductions in
    amounts specified elsewhere in the CAA.
    Referring to  "  7506(c)(1)  & (c)(3)," the  court held
    that  "[t]hese  conformity  requirements  plainly  constitute  an
    emissions  'standard  of  performance.'"  CLF, 
    24 F.3d at
    1477
    -17-
    (emphasis  added).2  In so holding, the court observed that those
    provisions  "mandate  that  defendants  demonstrate   that  their
    transportation  projects 'would  contribute  to annual  emissions
    reductions  consistent with' the levels  set out in   7511a(b)(1)
    and    7512a(a)(7)."  
    Id.
       This language reveals that  the court
    was relying on    7506(c)(3) for its finding that  the conformity
    requirements constitute a standard of performance.  See 42 U.S.C.
    7506(c)(3)(A)(iii)  (to be in conformity,  transportation plans
    or programs in ozone and carbon monoxide nonattainment areas must
    "contribute   to  annual  emissions  reductions  consistent  with
    sections 7511a(b)(1) and 7512a(a)(7)").
    On further reflection, it appears to us that  the route
    to  section 7506(c)(3) lies through  section 7506(c)(1).  In CLF,
    as in the case before us, plaintiffs  were challenging government
    action  in approving  an  activity that  did  not conform  to  an
    approved implementation  plan or other conformity  criteria.  See
    
    id. at 1478
    .   While  subsection  (c)(3) spells  out  particular
    conformity  criteria for  transportation plans,  the crux  of the
    action remained the noncompliance by a government agency, not the
    violation  of an emission standard  by the activity  itself.  The
    2  The court also held that prior case law  limiting citizen suit
    jurisdiction  to enforcement  of specific  measures, commitments,
    and strategies for ensuring compliance with air quality standards
    did  not  preclude  citizen  suit  jurisdiction  over  conformity
    provision  claims  because  the  requirements of  the  conformity
    provision were sufficiently specific and objective.  CLF, 
    24 F.3d at 1477-78
    .   While we  do not  disagree with  that part  of the
    analysis,  we do not reach  the specificity issue  unless we find
    that  the   conformity  provision  otherwise   falls  within  the
    statutory definition of an "emission standard or limitation."
    -18-
    foundation of the plaintiffs' claims, both there and here, is the
    subsection (c)(1) prohibition of the federal agency's approval or
    support of any activity  not in conformity with an  approved plan
    or other standards, requirements, or milestones.
    As noted above, a standard of performance is defined as
    "a requirement  of continuous emission  reduction .  . .  ."   42
    U.S.C.   7602(l) (emphasis added).  Nothing in section 7506(c)(1)
    imposes  an  emissions  reduction   requirement.    That  section
    prohibits a federal agency from approving, supporting, or funding
    any activities that  do not "conform" to the provisions of an SIP
    or   other  standards,  emissions   reduction  requirements,  and
    milestones.   The sources  of those standards,  requirements, and
    milestones may  include the  NAAQS or standards  and requirements
    set  out in  an SIP  or provisions  of the  CAA itself.   Section
    7605(c)(1)(A) and (B)  define what  standards must be  met for  a
    project to  be in conformity.   In  the case of  a transportation
    plan  or program,  such  as the  one  at  issue in  CLF,  section
    7506(c)(3)  imposes additional standards.   Thus,  the conformity
    provision    refers   to   or   involves   standards,   reduction
    requirements, and milestones, in the  sense that a federal agency
    must determine that a  project meets those standards in  order to
    approve or support  it.  However, the conformity provision itself
    imposes no such standards  or requirements.  It simply  imposes a
    duty on federal agencies  not to approve or support  any activity
    that does  not meet  standards, requirements, and  milestones set
    out in an SIP or the CAA.
    -19-
    (iii)  Schedule or Timetable of Compliance.  Section
    (iii)  Schedule or Timetable of Compliance.
    7602(p) defines a "schedule and  timetable of compliance" to mean
    "a  schedule  of  required  measures   including  an  enforceable
    sequence  of actions or operations  leading to compliance with an
    emission limitation, other limitation, prohibition, or standard."
    42 U.S.C.    7602(p) (1988).     CLF argues  that the  conformity
    provision  is  a  "schedule  or timetable  of  compliance"  under
    section    7604(f)    because    the     "[c]onformity    section
    176(c)(1)(B)(iii)  specifically  prohibits federal  agencies from
    supporting any  activity if it will 'delay  timely attainment' of
    the schedule of compliance set  for nonattainment states like New
    Hampshire to reach 15% emission reduction milestones in  1996 and
    full  ozone  attainment in  1999."   This  argument  is, however,
    inapposite.   The issue  is not whether  the conformity provision
    requires the  federal agency to determine that a project complies
    with  a  schedule or  timetable  of  compliance found  elsewhere;
    rather it  is  whether  the  conformity  provision  is  itself  a
    schedule or  timetable of  compliance.   Plaintiffs here  are not
    suing  a polluter for violation  of the schedule  or timetable of
    compliance  referenced  in  section  176(c)(1)(B)(iii);  they are
    suing  three  federal agencies  for  approving  and supporting  a
    project  that   may  violate   that  schedule  or   timetable  of
    compliance.
    It might be argued that the conformity provision itself
    constitutes a "schedule or timetable of compliance" as defined by
    section  7602(p) in that  it requires federal  agencies to follow
    -20-
    "an enforceable sequence of  actions . . . leading  to compliance
    with an  emission limitation,  other limitation,  prohibition, or
    standard."   See 42 U.S.C.    7602(p).   The conformity provision
    requires  federal agencies  to follow  a sequence  of  actions to
    ensure a  project's conformity with limitations  and standards in
    an existing  SIP or with  the NAAQS.   Those actions,  though not
    specified in  the statute, necessarily include analyses comparing
    "the  most recent estimates of emissions" in the proposed project
    area with the projected emissions in the area were the project to
    go forward, an assessment whether the project meets the  specific
    statutory criteria for conformity based  on those analyses, and a
    determination  whether to support or approve the project.  See 42
    U.S.C.   7506(c)(1);  see also Cate, 
    904 F. Supp. at 523
     (finding
    that an  agreement  requiring gas  pipe line  company to  conduct
    certain modeling and analyses for determining what measures would
    eliminate violations of  the NAAQS  and to develop  and submit  a
    plan  specifying  corrective  measures  and milestone  dates  for
    instituting  corrective  measures  constituted  a  "schedule"  of
    compliance  within  the  meaning  of  42  U.S.C.      7604(f)(1),
    7602(p)).
    We  reject this argument, however, on  the basis of the
    EPA's interpretation of "compliance  schedule" in its regulations
    implementing  the CAA.    40 C.F.R.     51.100 (1991).    Section
    51.100(p)  defines "compliance  schedule"  to mean  "the date  or
    dates  by which a  source or category  of sources  is required to
    comply  with  specific  emission  limitations  contained  in   an
    -21-
    implementation plan  and with  any increments of  progress toward
    such  compliance."   (Emphasis  added.)   40  C.F.R.    51.100(q)
    defines "increments of progress" to mean "steps toward compliance
    which will be  taken by  a specific source  . . .  ."   (Emphasis
    added.)    These  definitions  make  clear  that  a  schedule  of
    compliance  is  a  sequence  of  actions  that  a  polluter  must
    undertake  by  certain  specified   dates  in  order  to  achieve
    compliance with relevant emissions limitations or standards.  The
    conformity  requirements  themselves  do  not  fall  within  that
    definition.
    2.  Review under the APA, 5 U.S.C.   702
    2.  Review under the APA, 5 U.S.C.   702
    Having  concluded that  citizen suit  jurisdiction does
    not  extend to violations of the conformity provision, we turn to
    the question whether judicial review is available  under the APA.
    In  the absence  of  a  contrary  statutory  provision,  the  APA
    entitles a person  aggrieved by final  agency action to  judicial
    review  and  requires   that  agency  action  be  set   aside  if
    "arbitrary, capricious, an abuse  of discretion, or otherwise not
    in  accordance with law."  5 U.S.C.    702, 706(2)(A) (1988); see
    Marsh  v. Oregon  Natural Resources  Council, 
    490 U.S. 360
    ,  375
    (1989).  While  the APA does not provide an independent source of
    subject  matter jurisdiction, it does  provide a federal right of
    action where subject matter jurisdiction exists under 28 U.S.C.
    1331 (giving  district courts  jurisdiction of all  civil actions
    arising under the laws of the United States).   See Japan Whaling
    -22-
    Ass'n v. American Cetacean  Soc'y, 
    478 U.S. 221
    , 230  n.4 (1986);
    Califano v. Sanders, 
    430 U.S. 99
    , 104-07 (1977).
    Defendants argue that   1331 cannot confer jurisdiction
    over  the conformity claims against  the Air Force because, under
    Middlesex County  Sewerage Auth. v. National  Sea Clammers Ass'n,
    
    453 U.S. 1
      (1981), no  implied private  right of  action exists
    under the Clean Air Act.  Defendants' reliance on Sea Clammers is
    misplaced.   In  Sea  Clammers, the  Supreme  Court held  that  a
    comprehensive  statutory  enforcement  mechanism complemented  by
    provisions for  citizen suits precluded an  implied private cause
    of action for damages.  See Sea Clammers, 
    453 U.S. at 17-18
    .  But
    an implied  right of  action is  not a predicate  for a  right of
    judicial  review  under the  APA.    See,  e.g.,  Oregon  Natural
    Resources Council, 
    834 F.2d at 851
    .  The central purpose of  the
    APA  is  to "provid[e]  a broad  spectrum  of judicial  review of
    agency  action."    Bowen v.  Massachusetts,  
    487 U.S. 879
    ,  903
    (1988).  Therefore, "[a]  cause of action for review  of [agency]
    action  is  available  [under  the APA]  absent  some  clear  and
    convincing evidence of legislative intention to preclude review."
    Japan Whaling, 
    487 U.S. at 904
    .   The citizen suit  provision of
    the CAA provides no "clear and convincing evidence of legislative
    intention to preclude  review"; to the  contrary, it includes  an
    explicit  savings  clause for  other rights  of  relief.   See 42
    U.S.C.   7604(e) (1988) (preserving "any right which any person .
    . .  may have under  any statute  . . .  to seek . . . any  other
    relief");  Oregon Natural Resources Council, 
    834 F.2d at
    851 n.15
    -23-
    (same  savings clause  under Clean Water  Act preserves  right of
    review under APA);  Hough v.  Marsh, 
    557 F. Supp. 74
    , 77-79  (D.
    Mass.  1982) (same).  Moreover, cases  decided after Sea Clammers
    have expressly recognized that the APA provides a right of review
    of  agency decisions precisely  where a plaintiff's  claim is not
    covered  by the  citizen suit  provision of the  substantive act.
    See, e.g., Oregon  Natural Resources  Council, 
    834 F.2d at 851
    ;
    Allegheny County Sanitary  Auth., 
    732 F.2d at 1177
    ;  Tidwell, 
    837 F. Supp. at 1355-57
    .  Other cases cited by defendants are equally
    inapposite since  none involve judicial review  of agency action.
    See,  e.g., Greenfield and Montague Transp. Area v.  Donovan, 
    758 F.2d 22
    , 26  (1st  Cir. 1985)  ("mere  existence of  a  disputed
    question  of  federal  law   does  not  confer  federal  question
    jurisdiction").
    Finally,  we must  consider whether  42 U.S.C.  7607(b)
    bars  district   court  jurisdiction  under  the   APA  over  the
    conformity  provision claim  against  the EPA.   Section  7607(b)
    provides for  judicial review of "any  . . . final  action of the
    Administrator"  by the  filing  of a  petition  in the  court  of
    appeals.  In this case, plaintiffs complain that the EPA violated
    section  7506  by  approving  and supporting  the  Pease  project
    without  making  the  requisite conformity  determination.    The
    obligation under  that section  runs to any  "department, agency,
    [and] instrumentality of the Federal Government."   Action by the
    EPA to comply with section 7506 is not action taken by  it in its
    capacity of administrator and  enforcer of the CAA.   The text of
    -24-
    the  statute supports  this  distinction.    Where it  refers  to
    obligations  imposed  on the  EPA by  the  CAA, it  imposes those
    obligations  on   the  Administrator.    See,   e.g.,  42  U.S.C.
    7506(c)(4)(A)("the Administrator shall promulgate  criteria and
    procedures  for  determining conformity  .  .  .  of  . .  .  the
    activities  referred to  in [section  7506(c)(1)])"; 42  U.S.C.
    7601(a)(1)("the  Administrator  is authorized  to  prescribe such
    regulations as  are necessary  to carry out  his functions  under
    this chapter").   And review  under section 7607(b)  is only  "of
    action  of the  Administrator."   In summary,  plaintiffs' claims
    concern  action  taken  by the  EPA  qua  agency  of the  federal
    government,  not as  administrator  or enforcer  of the  CAA, and
    hence are not subject to review under section 7607(b).
    B.  Conformity Determination in Absence of NEPA Compliance
    B.  Conformity Determination in Absence of NEPA Compliance
    Plaintiffs argue  that since  the district  court found
    the air quality analyses  used by the federal  agencies deficient
    and not in compliance with NEPA, it should not have addressed the
    merits of  the CAA claims.  Neither the agencies nor the district
    court,  the   argument  goes,  could   make  reasoned  conformity
    determinations under  the CAA  based on noncomplying  air quality
    analyses.   The  argument  raises two  separate  issues:   Was  a
    conformity  determination precluded  as  a matter  of law  before
    completion of the NEPA process?   And, even if it was  not, could
    the  Air Force and the  FAA reasonably make  such a determination
    before the NEPA process had been completed here?
    -25-
    We  can readily  dispose of the  first issue.   Section
    7506(c)(1)   sets  forth   its  own   standards  for   evaluating
    conformity.   Nothing  in that  section or  elsewhere in  the CAA
    requires the  information on which a  conformity determination is
    based to have been subject to review, analysis, or public comment
    pursuant to NEPA.   Moreover,  regulations issued by  the EPA  in
    1993   prescribing   procedures  and   criteria   for  conformity
    determinations  suggest  no  connection   between  NEPA  and  CAA
    compliance.  See 42  U.S.C.   7506(c)(4)(A);  40 C.F.R.  Part 51,
    Subpart W  (1994); 40 C.F.R. Part  93, Subpart B (1994).   To the
    contrary,  they specify that  "[w]here multiple  Federal agencies
    have jurisdiction  for various aspects  of a  project, a  Federal
    agency may choose to adopt the analysis of another Federal agency
    or  develop  its own  analysis in  order  to make  its conformity
    determination."   40  C.F.R.    93.154  (1994).   And  40  C.F.R.
    93.156(b) (1994) states that  the 30-day comment period  for an
    agency's draft conformity  determination "may be concurrent  with
    any  other  public  involvement,  such  as  occurs  in  the  NEPA
    process."  We see no basis  for engrafting a requirement that the
    NEPA process be completed before a determination is made.
    Plaintiffs next contend that the Air Force and  the FAA
    could  not reasonably  make the  conformity determination  before
    completing  the NEPA process.  If the federal agencies had relied
    entirely  on  the  FEIS   as  the  basis  for  their   conformity
    determinations, and if  the district  court had  later found  the
    analyses  in the FEIS deficient under NEPA on substantive grounds
    -26-
    that would also have affected the conformity analysis required by
    the CAA,  the CAA conformity  determination might also  have been
    deficient.  See, e.g., Sierra Club v. Sigler,  
    695 F.2d 957
    , 980-
    83  (5th  Cir.),  reh'g denied,  
    704 F.2d 1251
      (1983).   That,
    however, is not what happened here.   The NEPA problem arose from
    a failure to comply  with the public comment requirement  in that
    the  agencies   relied  for  their  conformity  determination  on
    information and analyses that  they had failed to include  in the
    FEIS or a  Supplemental FEIS  for public comment.   The  district
    court  found that those materials were a sufficient basis for the
    conformity  determinations; they simply  should have been subject
    to  public review and comment  to meet the  requirements of NEPA.
    See 
    864 F. Supp. at 284-85, 288
    .  Because such  public review and
    comment  are not required  under the conformity  provision of the
    CAA,  the NEPA  violation  did  not  affect  the  merits  of  the
    conformity determination and hence does not require that we defer
    passing on the conformity claims.
    C.  Conformity Determination by the EPA
    C.  Conformity Determination by the EPA
    "In  accordance with [the EPA's] responsibilities under
    . . . [NEPA and CAA]," the EPA issued a review of the Air Force's
    FEIS on August 14, 1991.  In that review, the EPA addressed air
    -27-
    quality concerns related to the Pease project.  It first reviewed
    its  earlier conclusions  that  the project's  air impacts  would
    hinder New Hampshire's ability  to achieve required reductions in
    ozone precursor emissions  and would cause  violations of the  CO
    standards.  The EPA then reviewed the terms of the MOU into which
    it had  entered with PDA  and NHDES  and concluded  that the  MOU
    "provides  a framework  that,  if  successful,  gives  reasonable
    assurance that  the Pease  development can proceed  in compliance
    with the CAA."  The MOU itself quotes the text of section 7506(c)
    and states  that its  purpose  is to  "accommodate the  statutory
    responsibilities of the Parties  and provide assurance of orderly
    and  phased development  in  compliance with  CAA  requirements."
    Moreover,  the commitments in the  MOU indicate that  the EPA was
    considering  the specific  statutory criteria  in  the conformity
    provision.  For example, the MOU specifies that, in the event the
    CO air quality analysis  required by the MOU shows  that proposed
    traffic increases from redevelopment  "may cause or contribute to
    a new violation of the carbon monoxide NAAQS," PDA must implement
    measures necessary  to reduce projected  traffic increases and/or
    air emissions  impacts to a level which will not result in such a
    condition.  See infra pp.  48-50.
    Section 7506(c) does not specify the form a conformity
    determination must take; when the  agencies acted, they had  only
    the  statute  to  guide them  because  the  regulations  were not
    adopted until 1993.  Taking that fact into  account, we think the
    EPA's  actions  sufficiently  reflect  that  it  considered   the
    -28-
    project's  potential  impact  on  air  quality  in  light  of the
    conformity provision  and, based on  the commitments in  the MOU,
    see infra pp. 48-54, determined that the project could be carried
    out in conformity with applicable air quality standards.
    D.  Agencies' Compliance with 42 U.S.C.   7506(c)(1)
    D.  Agencies' Compliance with 42 U.S.C.   7506(c)(1)
    Having found that the  EPA made the required conformity
    determination, we now consider  whether its determination and the
    determinations  made by the Air  Force and the  FAA complied with
    the statute.   As noted,  the statute prohibits  federal agencies
    from  supporting  or  approving  a project  unless  that  project
    "conforms to an implementation plan after it has been approved or
    promulgated  under  section 7410  of this  title."   42  U.S.C.
    7506(c)(1). "[C]onformity to an implementation plan means"
    (A)  conformity  to an  implementation plan's
    purpose  of  eliminating   or  reducing   the
    severity  and  number  of violations  of  the
    national ambient air quality standards; and
    (B) that such activities will not--
    (I)   cause  or   contribute  to   any  new
    violation of any standard in any area;
    (ii)  increase the frequency or severity of
    any existing violation of any standard in any
    area; or
    (iii)  delay  timely   attainment  of   any
    standard  or  any  required interim  emission
    reductions or other milestones in any area.
    42 U.S.C.   7506(c)(1)(A),(B).
    At  the outset  we  note  two relevant  considerations:
    First,  no regulations  interpreting  these  provisions had  been
    promulgated   when    the   agencies   made    their   conformity
    determinations; therefore, they had only the words of the statute
    to  guide them.  Second, a conformity determination is inherently
    -29-
    fact-intensive;  therefore,  what  constitutes  conformity  is  a
    function  of  the unique  characteristics  of  the project  being
    approved.
    1.  Substance of the Conformity Determinations.
    1.  Substance of the Conformity Determinations.
    The EPA, the Air Force, and the FAA all determined that
    the  transfer  and  redevelopment  of Pease  met  the  conformity
    requirements of section 7506(c)(1).  As discussed above, evidence
    that the EPA made a conformity  determination is found in the MOU
    and the EPA's review of the FEIS.   See supra pp. 33-35.  The Air
    Force's conformity determination  is contained in two  documents:
    its  ROD,  issued August  20, 1991,  and  its Memorandum  for the
    Record,   issued  March   20,   1992.     The  FAA's   conformity
    determination is contained  in its ROD, issued February 26, 1992.
    Those  documents reveal  the bases  for the  agencies' conformity
    determinations.   We now examine those bases to determine whether
    the agencies abused  their discretion  when they  found that  the
    Pease  project  met   the  conformity  requirements  of   section
    7506(c)(1).
    The  agencies relied  on  information  and  commitments
    contained   in  various  documents  in  making  their  conformity
    determinations.    The  EPA,   as  previously  noted,  based  its
    conformity determination on the commitments made in the MOU.  The
    Air Force based its determination  on the MOU, post-FEIS  studies
    conducted by NHDES and  discussed in the letter of  certification
    written  by  Robert  W.  Varney, Commissioner  of  NHDES  (Varney
    letter), and the FAA's conditional approval of certain aspects of
    -30-
    the  Pease  project.   Similarly,  the FAA  based  its conformity
    determination  on  the MOU,  the  NHDES  studies and  conclusions
    discussed  in  the  Varney   letter,  the  Governor's  letter  of
    assurance,3 and  its own conditional approval  of certain aspects
    of  the Pease  project.  Each  of  the  bases  of  the  agencies'
    conformity determinations is briefly summarized below.
    a.   The  Memorandum of  Understanding.   Because the
    a.   The  Memorandum of  Understanding.
    FEIS concluded that air  emissions likely to be generated  by the
    expected redevelopment of the  airport would add to the  level of
    ozone   precursor  emissions4   experienced  in   the  Portsmouth
    Metropolitan Statistical  Area and because of  the EPA's concerns
    about the  air quality impacts  of Pease redevelopment,  the EPA,
    PDA,  and   NHDES  entered   into   an  agreement--the   MOU--"to
    accommodate the  statutory responsibilities  of the Parties,  and
    provide assurance of orderly and phased development in compliance
    with CAA requirements."
    The MOU acknowledges  that, because  the region  around
    Pease  was a serious nonattainment region for ozone, the 1990 CAA
    amendments required New  Hampshire to revise  its SIP to  achieve
    3   Both the  Air Force  and the FAA  cite Governor  Judd Gregg's
    February 13, 1992, letter of assurance (Governor's letter) as one
    basis  for   their  conformity   determinations.     Because  the
    Governor's letter relied  primarily on the NHDES  studies and the
    Varney  letter as the grounds for its assurance of conformity, we
    do not discuss it separately.
    4   Ozone  precursors include  nitrous oxide  (NOx) and  volatile
    compounds  (VOCs)  such  as hydrocarbons  (HC).    See 40  C.F.R.
    51.852  (1995)  (ozone precursors  include  NOX  and VOCs);  40
    C.F.R.   51.100(s)  (1995) (VOCs  include any compound  of carbon
    except those listed in regulation).
    -31-
    net reductions of  15% in total  volatile organic compound  (VOC)
    emissions  by November  15, 1996,  and 3%  each year  thereafter,
    until the  region achieved compliance  with the NAAQS  for ozone.
    To  ensure compliance  with the  CAA and the  SIP, PDA  and NHDES
    committed themselves, under the terms of the MOU, to take certain
    actions.
    With respect to carbon monoxide (CO) emissions, the MOU
    provides that:
    (1) PDA will undertake a surface transportation study
    examining existing vehicle traffic  patterns, projected
    vehicle traffic increases associated  with development,
    and potential for alternative modes of transportation.
    (2) Based on the results of the transportation study,
    PDA  will  develop  a comprehensive  traffic  model and
    surface transportation master plan  for the Pease area.
    (3) Using the traffic model  and periodically updated
    traffic  counts,  PDA  will undertake  intermittent  CO
    analyses to determine compliance with the one and eight
    hour CO NAAQS and report the results of all CO analyses
    to EPA.
    (4)  In the  event that  the CO  analyses demonstrate
    that   a   proposed   traffic   increase   from   Pease
    redevelopment  may  cause   or  contribute  to  a   new
    violation of the NAAQS for CO, PDA, in conjunction with
    any  other  state  agency  whose  participation  may be
    -32-
    necessary, "will implement measures necessary to reduce
    projected  traffic  increases   and/or  air   emissions
    impacts  to  a  level  which  will  not  result in  any
    violation of,  or any  contribution to a  violation of,
    the NAAQS" for CO.
    With  respect to hydrocarbon (HC) emissions, PDA agreed
    not to develop Pease  beyond a level anticipated to  generate 3.3
    tons  per day  of  HCs until  New Hampshire  revised  its SIP  to
    accommodate greater emissions and the EPA approved the new SIP.
    Finally, with respect to all emissions, NHDES agreed to
    consult with PDA in preparing the revised SIP and to evaluate and
    incorporate into  the new  SIP projected emission  increases from
    Pease redevelopment.
    b.   NHDES Studies and the Varney Letter.  The Varney
    b.   NHDES Studies and the Varney Letter.
    letter  considered  two  possible   readings  of  the  conformity
    requirements  of section  7506(c)(1)(B):  (1)  that "the  federal
    agency need  only  determine that  the  proposed activity  is  in
    conformity with the terms of the existing SIP," and (2) that "the
    determination  must  address  the  three elements  set  forth  in
    [7506(c)(1)(B] . . . separately, regardless of the terms of the
    SIP."   The  letter  concluded that  Pease development  conformed
    under  either reading.  This  conclusion was based  on studies of
    air emissions  completed  by NHDES  after  the FEIS  was  issued.
    These studies compared baseline emissions from 1989 (during full-
    scale  military  operations  at Pease)  and  1990  (when the  CAA
    amendments were enacted and some military operations at Pease had
    -33-
    already ceased) with projected emissions to 1997.5  According  to
    the Varney letter,  the emissions were not  projected beyond 1997
    because such projections would be too speculative and  because by
    1997 New Hampshire would adopt a new SIP to address any increases
    in emissions.
    Based on these  studies, NHDES concluded,  with respect
    to  ozone,  that  by  1997  emissions  of  HCs,  ozone's  primary
    precursor, would likely reach approximately 2.5 tons per day, the
    same level  as Pease  emitted in  1990, when  military operations
    were  less than full-scale.  At full-scale, HC emissions at Pease
    had been  variously estimated at 3.3 to 4 tons per day, which was
    still  in compliance with the existing SIP.  Overall ozone levels
    generated locally  were expected  to decline because  older cars,
    which  produce more HCs,  were slowly being  replaced and because
    "stage  II  vapor  recovery  at gasoline  filling  stations"  was
    commencing.   For  these  reasons, projections  of overall  ozone
    levels  generated by the Pease area were expected to remain below
    the 1989 and 1990 levels through Phase I of redevelopment.
    With respect  to CO emission levels,  the NHDES studies
    showed that, comparing 1989 and 1990 to 1997, Pease redevelopment
    would not result  in a  significant increase in  the air  quality
    region.    And  improvement  of  the  intersection  at  Spaulding
    Turnpike  and  Gosling  Road  (Spaulding   Turnpike/Gosling  Road
    5   Projected emissions  to 1997 took  into account redevelopment
    through Phase I of the Pease project, i.e., the first five years.
    -34-
    interchange) would significantly lessen  CO levels locally during
    the period studied.6
    NHDES  ultimately  concluded  that Pease  redevelopment
    satisfied  the  three  conformity  criteria set  out  in  section
    7506(c)(1)(B): that, through 1997, Pease redevelopment would  not
    cause  or contribute to any new  violation of any standard in any
    area;  increase  the  frequency   or  severity  of  any  existing
    violation of any standard in any area; or delay attainment of any
    standard  or any  required interim  emission reductions  or other
    milestones in any area.
    NHDES  also concluded that  Phase I redevelopment would
    not  violate any specific provision  of the SIP  but rather would
    "conform  to the  SIP's purpose  of eliminating  or  reducing the
    severity  and number of  violations of  the national  ambient air
    quality standards,  and achieving expeditious attainment  of such
    standards."  See  42 U.S.C.  7506(c)(1)(A).   NHDES reached  this
    conclusion  for  several  reasons:   (1)  the  existing  SIP  was
    developed  when  Pease  was  fully  operational and  incorporated
    emissions from Pease  at that level of operation; (2)  Phase I of
    Pease redevelopment was expected  to produce fewer emissions than
    6  Although the NHDES studies noted that the "air quality region"
    had "no  historic attainment  or maintenance problem  with carbon
    monoxide" NAAQS, the air  quality analysis in the FEIS  had shown
    present and ongoing violations of the NAAQS for CO at the Gosling
    Road/Spaulding  Turnpike  interchange, the  main  gate  to Pease.
    Post-FEIS supplemental  air quality  modeling of the  interchange
    area,  based  on corrected  data, showed  that  CO levels  at the
    interchange would  stay  within  the  NAAQS through  Phase  I  of
    redevelopment upon  completion of scheduled  improvements at  the
    interchange.
    -35-
    the base produced during full operation; and (3) increased levels
    of emissions from later stages of development would be taken into
    account in the future SIP.
    c.  FAA's Approval of Airport Redevelopment.  The FAA
    c.  FAA's Approval of Airport Redevelopment.
    reviewed  the  Airport  Layout  Plan  (ALP),  PDA's  proposal  to
    redevelop airport-related  property at Pease, as  required by the
    Surplus Property Act.  In its ROD, it approved each  of the items
    in  the   ALP,  either  unconditionally  or   conditionally,  and
    recommended  that the Air Force proceed with its proposal to make
    property at Pease  available for use as  a civilian airport.   It
    gave unconditional  approval to  the minor,  interim and  Phase I
    redevelopment outlined in the ALP but, to ensure conformity, only
    conditional approval to key  items in the ALP.  It concluded that
    its approval "conform[s] with the approved SIP."
    Regarding the later phases  of the redevelopment, which
    could have a significant impact on air quality, FAA approval will
    be  required once plans for them  are made final and proposed for
    implementation; that approval will be  granted only after the FAA
    determines  whether additional  air  quality analysis  and a  new
    conformity finding are  required.  Further, FAA  approval will be
    required  for any new projects not depicted in the ALP, providing
    additional assurances of conformity.
    2.      Plaintiffs'   Challenges   of   the  Conformity
    2.      Plaintiffs'   Challenges   of   the  Conformity
    Determinations.
    Determinations.
    Plaintiffs   charge   that  the   agencies'  conformity
    determinations ignore evidence  demonstrating that  redevelopment
    -36-
    would   cause  new   CO  violations,   increase  existing   ozone
    violations,  and delay  attainment  of the  clean air  standards.
    Instead of  properly addressing these problems  prior to approval
    of the project,  they contend, the agencies improperly shifted to
    New Hampshire  the burden of achieving  future conformity through
    amendments to the SIP.
    a.   Evidence  of Violation  of  Conformity Criteria.
    a.   Evidence  of Violation  of  Conformity Criteria.
    Plaintiffs contend that the redevelopment of Pease will cause new
    violations  of the NAAQS for CO, increase violations of the NAAQS
    for   ozone,  and   delay   attainment  of   CAA  standards,   in
    contravention of section 7506(c)(1)(B).
    (i)   Evidence   Regarding   Effects   of   Phase   I
    (i)   Evidence   Regarding   Effects   of   Phase   I
    Redevelopment.  The  NHDES studies discussed in the Varney letter
    Redevelopment.
    and the post-FEIS studies  on the Spaulding Turnpike/Gosling Road
    interchange indicate  that Phase I redevelopment  activities will
    conform to the  section 7506(c)(1)(B)  criteria, as  long as  New
    Hampshire   improves   the   Spaulding    Turnpike/Gosling   Road
    interchange  as required.7    As discussed  above, NHDES  studies
    used  1989 and  1990  emissions  estimates  as the  baseline  for
    performing  the conformity analyses.  The EPA, Air Force, and the
    FAA   adopted  those   studies   in   making   their   conformity
    determinations.
    7   New  Hampshire  is  committed  to making  these  improvements
    because,   as   noted  above,   NHDES's  conclusion   that  Pease
    redevelopment through  Phase I meets the  conformity criteria was
    based on the assumption that this  interchange would be improved.
    See  supra   p.  42  n.6.     Similarly   the  FAA's   conformity
    determination was based  in part on improvement of  the Spaulding
    Turnpike/Gosling Road interchange.
    -37-
    Section 7506(c)(1)(B) states that  "[t]he determination
    of  conformity shall  be based  on the  most recent  estimates of
    emissions .  . . ."   NHDES explained  that it selected  1989 and
    1990 rather than  1991 (the  year it performed  the analysis)  as
    baseline years because 1989 was
    "the most recent year representative of full-
    scale  military  operation  at  Pease.   This
    appears  to   us  to  be  the  most  relevant
    comparison,  since  Congress's  intention  in
    Section [7506(c)] is clearly to  evaluate new
    developments in the  context of  pre-existing
    conditions . . . .   We assume  that Congress
    did  not  intend that  a  project like  Pease
    redevelopment   would   be  penalized   under
    [7506(c)]  because there  is  a temporal  gap
    between the federal government's  decision to
    terminate  operations at Pease and the start-
    up of the State's redevelopment of the  base,
    during which  a  temporary reduction  in  the
    emission  inventory occurred  as a  result of
    activity phase-down."
    Use of 1991 as a baseline, it added, "would unfairly penalize the
    Pease redevelopment project, since 1991  emissions of CO, NOX and
    VOCs are significantly less than historical norms because  of the
    Air Force's cessation of activities at Pease."
    Under the Chevron doctrine, an  agency's interpretation
    of a statute is entitled to  weight when the statute is silent or
    ambiguous.    See  Chevron,  U.S.A., Inc.  v.  Natural  Resources
    Defense  Council,  Inc.,  
    467 U.S. 837
    ,  842-3  (1984).   As  an
    abstract  matter,   the  words  of  the   statute,  "most  recent
    estimates,"  would  not   be  considered  ambiguous;   a  literal
    interpretation  would require the agencies to use 1991 data.  See
    42  U.S.C.    7506(c)(1)(B) (conformity  determination "shall  be
    -38-
    based  on  the  most recent  estimates  of emissions  .  .  . .")
    (emphasis added).
    Courts have, however, recognized that  "[a] statute may
    be  ambiguous if its application leads to an irrational or absurd
    result."   Ewing v.  Rodgers, 
    826 F.2d 967
    ,  970 n.3  (10th Cir.
    1987) (citing  In re Rodman,  
    792 F.2d 125
    , 128  n.8 (10th  Cir.
    1986));  see also  United  States v.  Real  Estate Known  as  916
    Douglas  Ave., 
    903 F.2d 490
    ,  492 (7th Cir.  1990), cert. denied,
    
    498 U.S. 1126
     (1991).   Courts have also  recognized that "[t]he
    plain meaning of legislation should be conclusive, except in  the
    'rare  cases [in which] the literal application of a statute will
    produce  a result demonstrably at odds with the intentions of its
    drafters.'"  United States v. Ron Pair Enters., 
    489 U.S. 235
    , 242
    (1989), (quoting  Griffin v.  Oceanic Contractors, Inc.  
    458 U.S. 564
    , 571 (1982)) (emphasis added).   This appears to us to be one
    of  those rare  cases where  the plain  meaning would  lead to  a
    result  that is irrational and at  odds with the intention of the
    legislature.  Read  literally, the plain language  of the statute
    as  applied  in  base-closing  cases  would  require   conformity
    determinations to be based on  a wholly artificial situation, the
    interval  during which  military  operations have  shut down  and
    civilian  activities not yet started.   The likely consequence in
    many cases would be to  preclude any economically beneficial  use
    of  a closed  military base.   Such  a result  is  irrational and
    presumably unintended by Congress.  In  view of Congress's strong
    support of  civilian redevelopment of closed  military bases, see
    -39-
    infra pp.  57-58,  it would  not  have wanted  to  erect a  major
    obstacle to economically beneficial, post-closing uses of a base.
    Thus, the agencies' reliance  on the NHDES studies based  on 1989
    and 1990 estimates was reasonable under the circumstances.  Those
    studies  support the  determination  that Phase  I  redevelopment
    meets the statutory conformity criteria.
    (ii)  Evidence  Regarding  Effects  of  Post-Phase  I
    (ii)  Evidence  Regarding  Effects  of  Post-Phase  I
    Redevelopment.   Other  air quality  studies conducted  by NHDES,
    Redevelopment.
    however, suggest  potential violation of the  conformity criteria
    in  later  phases  of  Pease   redevelopment,  absent  mitigation
    measures.   With respect to CO emissions, the FEIS indicated that
    by the  year 2010 redevelopment  was expected to  generate 68,000
    daily  vehicle  trips into  the Pease  area.   The  main  area of
    concern for traffic congestion causing emissions increases is the
    intersection of  Spaulding Turnpike and Gosling  Road.  Post-FEIS
    air quality  studies of  that intersection indicated  that, while
    construction  of   the   new  Spaulding   Turnpike/Gosling   Road
    interchange by  NHDOT would bring  the area into  compliance with
    NAAQS  for  CO through  the end  of  the decade,  traffic volumes
    associated with Pease  redevelopment and regional  growth through
    the  full build-out  year  2010 could  cause violations  unless a
    second   entrance   interchange   to   Pease   was   constructed.
    Redevelopment would therefore contribute to new violations of the
    NAAQS for CO sometime after the turn of the century.
    Similarly,  an  EPA  memorandum  dated  July 24,  1991,
    indicated that, while Phase I of Pease redevelopment was expected
    -40-
    to  generate  only  2.5  tons  per  day  of  HCs  (a  major ozone
    precursor),  Phase II extending to the year 2002 was estimated to
    generate 4.8  tons  per day.    At  that level,  Phase  II  would
    increase existing violations, as well as delay attainment, of the
    NAAQS for ozone absent  some other changes or the  institution of
    mitigation measures.
    b.  Mitigation Measures.  Plaintiffs contend that the
    b.  Mitigation Measures.
    supporting agencies  improperly shifted the burden  of compliance
    to  New Hampshire  and the  SIP process  and that  the mitigation
    measures  agreed to by the  parties failed to  meet the statutory
    criteria of the conformity provision.
    (i) Carbon  Monoxide.  With respect  to CO emissions,
    (i) Carbon  Monoxide.
    the  MOU requires PDA to  conduct a surface transportation study,
    develop  a  traffic model  and master  plan  for the  Pease area,
    conduct  intermittent  CO   analyses,  and  implement  mitigation
    measures  as  needed.     As  to  the  latter,  the   MOU  states
    categorically that "PDA, and if necessary in conjunction with any
    other appropriate state agency, will implement measures necessary
    to  reduce  projected  traffic  increases  and/or  air  emissions
    impacts to  a level which will not result in any violation of, or
    any  contribution  to  a  violation  of,  the  NAAQS  for  carbon
    monoxide." (Emphasis added.)
    These  commitments are sufficient  to ensure compliance
    with the statutory requirement that Pease redevelopment "will not
    cause  or contribute to  any new violation" of  the NAAQS for CO,
    see 42 U.S.C.   7506(c)(1)(B)(I), for two reasons.
    -41-
    First,   PDA's   open-ended  commitment   to  implement
    necessary  mitigation   measures   includes  by   implication   a
    commitment   to  implement   the   mitigation  measures   already
    identified  in the  area of  the Spaulding  Turnpike/Gosling Road
    interchange.   Specifically,  it  includes a  commitment by  PDA,
    along with NHDOT and other necessary state agencies, to build the
    second access  to Pease,  unless later studies  reveal preferable
    alternatives for satisfying the commitment.  See supra pp. 38-39.
    Corroborating  this  commitment  is  a July  31,  1991,
    letter from PDA to the Air Force stating that compliance with the
    NAAQS would  require completion of improvements  to the Spaulding
    Turnpike/Gosling Road  interchange as  well as construction  of a
    second access to Pease prior to the time the improved interchange
    reaches maximum capacity.   To permit construction of the  second
    access, PDA requested that a portion  of the golf course at Pease
    be made available.   In  the Application and  Acceptance for  the
    transfer of  airport property, the  Air Force agreed  to transfer
    the needed portions of the golf course.
    Second, the  agreement  requiring ongoing  studies  and
    analyses and implementation of  mitigation measures as needed was
    a reasonable  way to  ensure conformity under  the circumstances.
    The  details of the redevelopment  project are not  fixed and its
    time line is extended.   As the FAA pointed  out in its ROD,  air
    quality  impacts stemming  from  certain aspects  of the  airport
    development  were speculative when  the conformity determinations
    -42-
    were made because the project-specific design detail necessary to
    assess those impacts properly and  develop a range of alternative
    mitigation  measures  was lacking.    Similarly,  the nonaviation
    business tenants at  the on-airport industrial  park had not  yet
    been  selected.   In  addition, over  the  20-year life  of Pease
    redevelopment, other environmental factors in the region, as well
    as technologies available  to address  them, may  change.   Given
    these uncertainties,  a commitment to pursue  ongoing studies and
    analyses and  to implement appropriate mitigation  measures based
    on demonstrated needs  was a reasonable  approach to meeting  the
    statutory requirement.
    (ii)  Ozone  Precursors.    With  respect  to   ozone
    (ii)  Ozone  Precursors.
    standards,   the  MOU  requires  NHDES   to  work  with  PDA  and
    incorporate projected emissions from Pease redevelopment into the
    SIP  revisions.8 Unless  and  until  the  new  SIP  is  approved,
    however,  it  bars PDA  from developing  Pease "beyond  the level
    anticipated  to   generate  3.3  tons  per   day  of  hydrocarbon
    emissions"--the level of emissions from Pease permitted under the
    existing SIP.  Thus, the MOU does not place the  entire burden of
    addressing HC emissions on the SIP process.
    To the extent that the MOU does rely on the SIP process
    to deal  with projected  increases in  HC emissions, however,  it
    8  According to  the 1990 Amendments, New Hampshire  was required
    to revise  its SIP  to achieve  at least a  15% reduction  in VOC
    emissions (including HCs) from 1990  levels on or before November
    of  1996 (accounting for any growth in emissions after 1990), and
    3%  additional annual  reductions on  average thereafter  through
    1999.   See  42 U.S.C.    7511a(b)(1)(A)  & (c)(2)(B)  (Supp. III
    1991).
    -43-
    does  so  properly  under  the  circumstances.    The  1990   CAA
    amendments required  New Hampshire to  revise its SIP  to address
    VOC emissions (which  include HC emissions) within  approximately
    three years.   See 42 U.S.C.     7511a(c), (b)(1).   See supra p.
    14.   NHDES's  commitment to  consult  with PDA  and  incorporate
    emissions from  Pease development into required  revisions of the
    SIP is  consistent with the SIP  process and NHDES's  role as the
    state agency responsible for  developing the SIP.  While  the EPA
    and the  legislature set ultimate standards  and goals--including
    the NAAQS and deadlines  for attaining them--the state prescribes
    in its SIP  how it  will achieve those  goals.   See 42 U.S.C.
    7407.   Thus, if NHDES  chooses to incorporate  into the required
    revisions of the SIP  certain levels of emissions from  the Pease
    project, that is its prerogative under the statutory SIP process.
    By  agreeing to  incorporate Pease  emissions into  SIP
    revisions that will  reduce overall ozone-precursor emissions  in
    the region, NHDES has enabled  PDA to undertake the redevelopment
    without increasing the severity of or delaying attainment of  the
    NAAQS  for  ozone.   Presumably  New  Hampshire will  accommodate
    increased HC  emissions from  Pease and achieve  interim required
    emissions reductions and timely attainment of the NAAQS for ozone
    by cutting VOC emissions in other areas.  This will permit  later
    stages of  Pease redevelopment  to go forward  without increasing
    existing violations of the NAAQS for ozone or delaying attainment
    -44-
    of  the NAAQS  for  ozone  or  other  CAA  standards.  42  U.S.C.
    7506(c)(1)(B)(ii), (iii).
    Unless and until a  new SIP incorporating higher levels
    of  emissions from Pease is  approved, however, the MOU prohibits
    redevelopment  of Pease beyond a level producing 3.3 tons per day
    of HC emissions.   While the cap is in  compliance with the terms
    of the existing SIP, it is not so clear it will ensure that Pease
    redevelopment  activities  will  not  increase  the  severity  of
    existing  ozone  violations  and   delay  compliance  with  ozone
    standards.   Whether redevelopment will increase  the severity of
    existing violations  depends in  part on the  baseline emissions.
    When compared to 1989  emissions, 3.3 tons per day  represents no
    increase  in the severity of  violations of the  NAAQS for ozone.
    Because,  as  we  stated  earlier,  use  of   1989  estimates  is
    reasonable  under the  circumstances,  see supra  pp. 45-47,  and
    because the existing  SIP permits  this level  of emissions,  the
    provisions of  the MOU satisfy the  conformity requirements under
    section 7506(c)(1)(B)(ii).
    Regarding delaying attainment  of the ozone  standards,
    plaintiffs   appear  to   suggest  that   to  meet   the  section
    7506(c)(1)(B)(iii)  criteria, emissions  from  the Pease  project
    must be consistent with  the VOC emissions reductions set  out in
    42 U.S.C.   7511a(c)(2).   Prior to incorporation into  a revised
    SIP, however, these reductions apply only in conformity decisions
    related  to  transportation  plans,  programs  and  projects  and
    therefore   are    not   relevant   here.       See   42   U.S.C.
    -45-
    7506(c)(3)(A)(iii); see also 136 Cong. Rec. S16973 (October 27,
    1990) (Statement  of Senator Baucus,  sponsor and manager  of the
    Senate bill) ("[Transportation]  plans and  programs adopted  for
    areas that are  nonattainment for ozone or carbon monoxide during
    the interim period shall contribute to annual emission reductions
    consistent with the emissions reductions schedules adopted in the
    bill for such areas. . . .") (emphasis added).
    IV.  THE CERCLA CLAIM
    IV.  THE CERCLA CLAIM
    Newington claims that the  Air Force's 55-year lease of
    portions  of Pease  to  PDA violates  section 120(h)(3)(B)(i)  of
    CERCLA (42  U.S.C.   9620(h)(3)(B)(I)).   The district  court had
    jurisdiction over  the claim under  42 U.S.C.    9613(b)  (1988).
    Section 120  was  added  by the  1986  Superfund  Amendments  and
    Reauthorization  Act (SARA), Pub.  L. No. 99-499,  
    100 Stat. 1613
    (1986),  to   address  issues   concerning  hazardous   waste  on
    federally-owned sites.  Section  120(a) subjects federal agencies
    to CERCLA.   Subsections (b) through (f) outline  a comprehensive
    program   to  identify  and   remediate  hazardous  waste  sites.
    Subsection  (h)  deals  with   transfers  of  property  on  which
    hazardous substances are known to  have been released or disposed
    of.    Subsection  (h)(1)  requires  notice  of  such release  or
    disposal in any contract "for the sale  or other transfer of real
    property which is owned by the United States."
    Subsection  (h)(3) addresses  the "contents  of certain
    deeds."  Before its recent amendment, it required that
    .  . . in the case of any real property owned
    by the  United States on which  any hazardous
    -46-
    substance was  stored for  one year  or more,
    known to have been released, or disposed  of,
    each deed  entered into  for the  transfer of
    such property  by the  United  States to  any
    other person or entity shall contain--
    (B) a covenant warranting that--
    (i)  all  remedial   action  necessary   to
    protect human health and the environment with
    respect  to any  such substance  remaining on
    the property  has been taken before  the date
    of such transfer, . . . .
    42 U.S.C.   9620(h)(3).
    Newington  argues that section  120(h)(3) prohibits the
    federal government from  transferring contaminated property until
    it has constructed, installed and is successfully operating clean
    up  procedures  and  mechanisms  that  ensure  full  remediation.
    Although  section  120(h)(3)  by  its  terms  applies  to  deeds,
    Newington contends  that the substance of  the transaction should
    control  and that the government should not be permitted to avoid
    the mandate of the  statute by labeling the transaction  a lease.
    The District Court  held that  the transfer  without an  approved
    remedial design violated  section 120(h) of CERCLA, and  that the
    failure to disclose in the  FEIS the decision to transfer  by way
    of a  long-term lease rather  than deed  violated NEPA.   See 
    864 F.Supp. at 290
    .  Although the court  declined to hold the leases
    void,  it directed the Air  Force to prepare  a supplemental FEIS
    delineating  the remedial  design.   Newington contends  that the
    relief granted  is inadequate  to secure compliance  with section
    120(h).
    -47-
    Any question about whether section 120(h)(3) applies to
    long-term  leases has been laid to rest  by the 1996 amendment of
    that section, adding the following language:
    The  requirements of subparagraph (B) [of a
    covenant   warranting   completion   of   all
    necessary remedial action] shall not apply in
    any  case  in  which   the  transfer  of  the
    property occurs or has occurred by means of a
    lease,  without regard to  whether the lessee
    has   agreed  to  purchase  the  property  or
    whether  the duration of  the lease is longer
    than 55 years.
    National Defense Authorization Act for Fiscal Year  1996, Pub. L.
    No. 104-106,   2834, 110 Stat.     (1996).
    "When a case implicates a federal statute enacted after
    the  events in  suit,  the court's  first  task is  to  determine
    whether Congress has  expressly prescribed  the statute's  proper
    reach."  Landgraf v.  USI  Film Prods.,  
    114 S. Ct. 1483
    ,  1505
    (1994).  In  this case, Congress left no doubt that the amendment
    was to apply to the instant  lease.  The Conference Report on the
    Defense  Authorization  Act  states  in part  that  section  2834
    "addresses a  recent federal  district court decision  that could
    undermine  reuse plans  at  military  installations selected  for
    closure  with  similar  reuse plans.    The  provision serves  to
    clarify  the legislative intent on  the issue."   H.R. Conf. Rep.
    No. 450,  104th Cong., 2d Sess.  [
    1996 WL 33108
     at  1724 (LH data
    base)] (1996).  Senator  Bob Smith of New Hampshire,  the sponsor
    of the amendment, explained that the need for the amendment arose
    out of the District Court's decision  in this case which "has . .
    . placed a cloud over redevelopment efforts at Pease .  . . [and]
    -48-
    has helped  to hinder  the expedited redevelopment  of facilities
    across  the Nation that are  being closed under  the Base Closure
    and Realignment  Act . . . .  The  language that was  included in
    section 2824 . . . was intended to modify section 120(h)(3) . . .
    to  provide that the Department  of Defense may  enter into long-
    term . . . leases while any phase of the cleanup is ongoing . . .
    . [N]ot only are  existing leases appropriate, but  future leases
    may be entered into  . . . ."   141 Cong. Rec. S11557  (daily ed.
    Aug.  5, 1995) (statement of  Sen. Smith).   The recent amendment
    validates the Air Force's lease to PDA under CERCLA.
    V.  THE NEPA CLAIM
    V.  THE NEPA CLAIM
    The  federal  defendants  do  not  appeal  the district
    court's  order  finding a  violation  of  "the public  disclosure
    requirements of NEPA" and  directing the Air Force to  "compile a
    Supplemental FEIS."  With  regard to the NEPA claims  against the
    FAA,  the FAA  adopted  the  FEIS  prepared  by  the  Air  Force;
    therefore,  the  district  court's  decision that  the  FEIS  was
    deficient under NEPA binds the  FAA.  The only NEPA  issue before
    us then is plaintiffs'  appeal of the district court's  denial of
    injunctive relief for the NEPA violations.
    Plaintiffs first attack the denial of injunctive relief
    on the ground that the district court  failed to make findings of
    fact and conclusions of law  sufficient to meet the  requirements
    of Fed. R. Civ. P. 52.   Plaintiffs contend that the court failed
    to provide sufficient factual or legal support for its conclusion
    that  plaintiffs "have  [not]  demonstrated the  irreparable harm
    -49-
    necessary for granting  a preliminary injunction."   See, 
    864 F. Supp. at 292
    .  "The  purpose   of   Rule  52(a),   pertinent   to
    injunctions,  is to  provide  the appellate  court  with a  clear
    understanding of  the  decision."   Wynn  Oil  Co.  v.  Purolator
    Chemical Corp.,  
    536 F.2d 84
    ,  85 (5th  Cir. 1976).   "Rule 52(a)
    calls for a level  of detail adequate to permit  appellate review
    on factual issues, and what is adequate depends on the importance
    of an issue,  its complexity,  the depth and  nature of  evidence
    presented, and  similar elements  that vary  from case  to case."
    Knapp Shoes, Inc. v. Sylvania Mfg. Corp., 
    15 F.3d 1222
    , 1228 (1st
    Cir.  1994).   Although the  district court  did not  discuss its
    factual  or legal reasons for concluding  that the plaintiffs did
    not  suffer  irreparable harm,  its  lengthy  opinion provides  a
    detailed  discussion  of  the  factual and  legal  bases  for its
    substantive  conclusions.    That   discussion,  along  with  the
    voluminous  and undisputed  documentary evidence  in the  record,
    provides  this  court with  sufficient  information  to determine
    whether  the  district court  abused  its  discretion in  denying
    injunctive relief;  thus, the omission of a  statement of reasons
    for the denial of  injunctive relief was at most  harmless error.
    See,  e.g.,  Associated Elec. Coop.,  Inc. v. Mid-America Transp.
    Co.,  
    931 F.2d 1266
    ,  1272 (8th  Cir.  1991) ("failure  to  make
    findings of fact  and conclusions  of law may  be harmless  error
    where,  as here, most relevant  facts are undisputed  and the law
    can be applied without the district court's assistance"); Koerpel
    v. Heckler, 
    797 F.2d 858
    , 866 n.4 (10th Cir.  1986) (even though
    -50-
    district court "should have elaborated on the facts which  formed
    the  basis  for its  conclusions .  .  . [s]uch  an  omission is,
    however,  harmless  error   because  the  record  supports   such
    findings")  (citation omitted); Huard-Steinheiser, Inc. v. Henry,
    
    280 F.2d 79
    , 84 (6th Cir. 1960) (failure of district court to put
    on record findings of fact and conclusions of law  resulted in no
    prejudicial error where record clearly disclosed basis upon which
    denial of injunction rested).  Plaintiffs   next  challenge   the
    court's  decision  to  deny  injunctive  relief  on  the  merits.
    Whether to  grant injunctive  relief  under NEPA  is governed  by
    traditional equity  standards.   Sierra Club  v. Marsh,  
    872 F.2d 497
    ,  503-04  (1st  Cir. 1989).    The  court  must consider  the
    plaintiffs'  likelihood of  success  on the  merits, whether  the
    plaintiffs would suffer irreparable  harm without an  injunction,
    the appropriate  "balance" of  harms to  the  plaintiffs and  the
    defendants, and the  effect upon  the public  interest.   Planned
    Parenthood  League of Mass. v. Bellotti, 
    641 F.2d 1006
    , 1009 (1st
    Cir. 1981).
    We review  orders granting or  denying injunctions  for
    abuse  of discretion.  Celebrity,  Inc. v. Trina,  Inc., 
    264 F.2d 956
    , 958 (1st Cir. 1959).  "District courts have broad discretion
    to evaluate  the  irreparability  of alleged  harm  and  to  make
    determinations regarding the propriety of injunctive relief."  K-
    Mart  Corp. v. Oriental Plaza, Inc., 
    875 F.2d 907
    , 915 (1st Cir.
    1989)  (quoting Wagner v. Taylor, 
    836 F.2d 566
    , 575-76 (D.C. Cir.
    1987)).
    -51-
    The  district court  denied  injunctive  relief on  the
    ground  that   plaintiffs  would  suffer  no   irreparable  harm.
    Plaintiffs  challenge this  finding,  relying on  Sierra Club  v.
    Marsh, 
    872 F.2d 497
      (1st Cir. 1989), and Massachusetts  v. Watt,
    
    716 F.2d 946
      (1st  Cir.  1983).   In  those  cases,  we  found
    irreparable harm  to exist when  agencies become entrenched  in a
    decision uninformed by the proper NEPA  process because they have
    made  commitments or  taken  action to  implement the  uninformed
    decision.  See Watt, 
    716 F.2d at 951-53
    ; Marsh, 
    872 F.2d at
    499-
    503. Our rationale  derived from the purpose  of NEPA:   "NEPA is
    designed  to influence  the  decision making  process" by  making
    "governmental officials notice  environmental considerations  and
    take them into account."   Watt, 
    716 F.2d at 952
    .   "Thus, when a
    decision  to which NEPA  obligations attach  is made  without the
    informed environmental consideration that NEPA requires, the harm
    that NEPA intends to prevent has been suffered."  
    Id.
       That harm
    is not  merely a procedural harm,  but is "the added  risk to the
    environment  that takes place  when governmental  decision makers
    make  up their minds without having before them an analysis (with
    prior public  comment) of  the likely  effects of  their decision
    upon the environment."  Marsh, 
    872 F.2d at 500
    .
    Plaintiffs   argue   that,   without   an   injunction,
    development  of Pease will continue and they will suffer the kind
    of  irreparable  harm we  described in  Watt  and Marsh.    As we
    emphasized  there,  however, our  holdings did  not mean  "that a
    likely NEPA violation automatically  calls for an injunction; the
    -52-
    balance  of harms may point the other  way."  See Marsh, 
    872 F.2d at 504
     (quoting Watt,  
    716 F.2d at 952
    ) (emphasis added). In Watt
    and  Marsh,  plaintiffs moved  for  injunctions  in the  earliest
    stages  of  development of  the  projects  at  issue,  when  NEPA
    injunctions could  implement the  statutory purpose in  the sense
    that "bureaucratic decision makers . . . are less  likely to tear
    down a nearly completed  project than a barely  started project."
    Marsh, 
    872 F.2d at 500
    .   In contrast, plaintiff here, well aware
    of the  defective FEIS, waited  nearly three years  before moving
    for  injunctive relief.  CLF  filed its complaint  in March 1992,
    some  six months after the  challenged FEIS and  ROD were issued;
    Newington  filed its  complaint  in June  1992.   Both complaints
    recited requests  for permanent injunctions in  their prayers for
    relief.   Despite  these  early references  to equitable  relief,
    however, neither  CLF nor  Newington ever  moved  to restrain  or
    enjoin any aspect of the project.  When the cases came before the
    district court on cross-motions for summary judgment, plaintiffs'
    briefs focused on the  merits of the substantive claims,  not the
    need for injunctive relief.  Only  after the entry of the court's
    order granting summary judgment in  part did plaintiffs argue, in
    a  motion to amend, that  they were entitled  to broad injunctive
    relief.
    To  be taken into  account in assessing  the balance of
    harms is the  fact that  between the time  when plaintiffs  filed
    suit  and  when  they  ultimately moved  for  injunctive  relief,
    significant  commitments were  made to  the  Pease project.   The
    -53-
    State of New  Hampshire issued $8  million in general  obligation
    bonds to fund the  operation of PDA and $40 million in guaranteed
    bonds to help finance the location of two major tenants at Pease;
    construction  contracts aggregating $50  million were entered and
    federal  grants of more than  $6 million received  to support the
    airport operations;  and more than 1,100  persons became employed
    by tenants and agencies  as a result of the  development project.
    These commitments would be  placed at risk if an  injunction were
    granted.
    Thus, the  type of public and  private commitments with
    which Watt and Marsh were concerned had already been made here by
    the  time plaintiffs sought injunctive relief.  If harm was done,
    it largely had been done, not by the court's denial of injunctive
    relief, but by plaintiffs' failure  to timely seek it.  While  it
    is true that as development continues other actions will be taken
    to implement the project, their impact  will be only incremental.
    Future risks  of environmental harm will  be minimized, moreover,
    by the district court's retention of jurisdiction under its order
    that  the Air  Force  compile a  Supplemental  FEIS, by  the  Air
    Force's commitment to  this court that  it "will use the  SEIS to
    review  its August 1991 ROD and April 1992 Supplemental ROD," and
    by the continuing oversight responsibilities of the FAA under the
    Surplus Property Act and of the EPA under the CAA.
    Under  these  circumstances, it  was  not  an abuse  of
    discretion for the district  court to deny the  injunctive relief
    sought.
    -54-
    VI.  CONCLUSION
    VI.  CONCLUSION
    We  reverse  the  district  court's  determination that
    defendants  violated CERCLA and affirm the  judgment below in all
    other respects.   Pending the completion of the Supplemental FEIS
    on which the FAA is working in conjunction with the Air Force, we
    retain  jurisdiction  under  the  petitions of  the  NEPA  claims
    against the FAA but dismiss the CAA claims against it.
    SO ORDERED.
    -55-