Appellant claims that the Atomic Energy Commission's Liquid Metal Fast Breeder Reactor program involves a "recommendation or report on proposals for legislation and other major Federal actions significantly affecting the quality of the human environment * * *" under Section 102(C) of the National Environmental Policy Act (NEPA), 42 U.S.C. Sec. 4332(C) (1970), and that the Commission is therefore required to issue a "detailed statement" for the program. The District Court held that no statement was presently required since, in its view, the program was still in the research and development stage and no specific implementing action which would significantly affect the environment had yet been taken. Taking into account the magnitude of the ongoing federal investment in this program, the controversial environmental effects attendant upon future widespread deployment of breeder reactors should the program fulfill present expectations, the accelerated pace under which this program has moved beyond pure scientific research toward creation of a viable, competitive breeder reactor electrical energy industry, and the manner in which investment in this new technology is likely to restrict future alternatives, we hold that the Commission's program comes within both the letter and the spirit of Section 102(C) and that a detailed statement about the program, its environmental impact, and alternatives thereto is presently required. Since the Commission has not yet issued such a statement, we reverse and remand the case to the District Court for entry of appropriate declaratory relief.1

I. FACTUAL BACKGROUND: THE LIQUID METAL FAST BREEDER REACTOR PROGRAM

Although more than a superficial understanding of the technology underlying this case is beyond the layman's ken, a brief summary will prove helpful. Nuclear reactors use nuclear fission-the splitting of the atom-to produce heat which may be used to generate electricity in nuclear power plants. Only a few, relatively rare, naturally occurring substances-primarily Uranium-235-can maintain the nuclear fission chain reaction necessary for operation of these reactors. There are thus severe constraints on the long run potential of nuclear energy for generating electricity unless new nuclear fuel is "artificially" produced. Such fuel can be produced through the process of "breeding" within a "fast breeder reactor." The fast breeder reactor differs from the now common light water nuclear reactor in that the neutrons which split atoms in the fuel (thereby releasing new neutrons and heat energy) travel much faster than the neutrons in ordinary reactors. The reactor breeds new fuel through what has aptly been termed "a sort of modern alchemy."2 Some neutrons leave the inner core of the reactor, which is made up of fissionable Uranium-235, and enter a blanket of nonfissionable Uranium-238. When atoms in this blanket are struck by neutrons, they are transmuted into Plutonium-239, itself a fissionable fuel which can be removed from the reactor and used in other installations. It is estimated that after about 10 years of operation the typical fast breeder reactor will produce enough fissionable Plutonium-239 not only to refuel itself completely, but also to fuel an additional reactor of comparable size. The Liquid Metal Fast Breeder Reactor (henceforth LMFBR) is simply a fast breeder reactor that uses a liquid metal, sodium, as a coolant and heat transfer agent.

Because the breeding principle makes possible vast expansion of fuel available for nuclear reactors (Uranium-238 is many times more common than Uranium-235), it has been the subject of considerable interest since the earliest days of atomic energy. The Commission demonstrated the feasibility of breeder reactors by constructing several experimental breeder reactors in the 1950's. In its 1962 Report to the President on Civilian Nuclear Power, the Commission specifically recommended that future Government programs include vigorous development and timely introduction of economic breeder reactors which, in the Commission's view, were essential to long-range major use of nuclear energy.3 By 1967, when the Commission supplemented its Report to the President, the LMFBR had been singled out as a priority program representing the largest civilian power development area.4 The Commission's focus expanded beyond solving the technical problems posed by the LMFBR, and began to embrace efforts to build an industrial base and obtain acceptance for LMFBR plant types by utilities, primarily through planned Government-assisted construction of commercial scale LMFBR electrical power plants.5 In sum, the Commission came to see its program as serving "as the key to effecting the transition of the fast breeder program from the technology development stage to the point of large-scale commercial utilization."6

In furtherance of these objectives the Commission, in 1968, issued a 10-volume LMFBR Program Plan, the dual objectives of which were (1) to achieve, through research and development, the necessary technology, and (2) "to assure maximum development and use of a competitive, self-sustaining industrial LMFBR capability."7 With growing concern about a possible energy crisis, rapid commercial implementation of LMFBR technology has become a national mission.8 In the style of President Kennedy's 1960 commitment to put an American on the moon by the end of the decade, President Nixon, in his June 4, 1971 Energy Message to Congress, announced as the highest priority item of his program "[a] commitment to complete the successful demonstration of the liquid metal fast breeder reactor by 1980,"9 and this goal has obtained the concurrence of Congress' Joint Committee on Atomic Energy.10 Statutory authorization has been obtained to proceed with the first demonstration plant,11 financed in large part by the federal government,12 and the Commission has entered into negotiations with the Tennessee Valley Authority and Commonwealth Edison aimed at concluding construction contracts for the plant. On September 26, 1971 the President announced his intention to seek the necessary legislative authority for a second demonstration plant.13 The Congress supports the program through annual appropriations and, at a time of general budgetary restraint, LMFBR program funds have recently mushroomed to $90.3 million in fiscal 1971 and $130 million in fiscal 1972.14 The Commission expects future federal expenditures for the program to be over $2 billion.15 These funds have been in the past, and will continue in the future to be, matched with sizable financial commitments from the private sector.16

The LMFBR's prospects are sufficiently bright to have led President Nixon to say: "Our best hope today for meeting the Nation's growing demand for economical clean energy lies with the fast breeder reactor."17 And the Commission has recently predicted that by the year 2000 LMFBR capacity will equal total electrical generating capacity in the United States today.18II. APPLICATION OF NEPA TO TECHNOLOGY DEVELOPMENT PROGRAMS

NEPA requires federal agencies to include a detailed environmental impact statement "in every recommendation or report on proposals for legislation and other major Federal actions significantly affecting the quality of the human environment * * *." That the Commission must issue a detailed statement for each of the major test facilities and demonstration plants encompassed by the LMFBR program is conceded by the Commission and not at issue in this case. The Commission has already issued an impact statement for its Fast Flux Test Facility to be constructed in Hanford, Washington, and, at the President's request, has completed a statement for the first demonstration plant prior to the time such a statement would normally be issued.19 Nor is the adequacy of either of these statements as they pertain to their respective individual facilities an issue on this appeal. The question raised, instead, is basically twofold: whether at some point in time the Commission must issue a statement for the research and development program as a whole, rather than simply for individual facilities, and, assuming an affirmative answer to this question, whether a statement covering the entire program should be drafted now.

Our consideration of this case has been somewhat complicated by the Commission's ambivalent position with respect to these already difficult questions. The Commission's basic position seems to be that NEPA requires detailed statements only for particular facilities, and that no separate NEPA analysis of an entire research and development program is required. In the words of then Chairman James Schlesinger: "These environmental statements are intended to deal with the particular facility or a particular project."20 The Commission proposes two apparently inconsistent approaches to assess the overall environmental effects of and alternatives to its research and development program in light of the limitation it perceives in NEPA. First, it suggests that analysis of the broader aspects of the total program take place within statements on individual facilities.

"* * * Unlike the detailed statements * * * which are confined to an analysis of the individual subject facility, impact statements on the LMFBR plants will be cumulative in nature; that is, each statement will not only provide the requisite environmental analysis for each facility, but will also place that data within the context of the current state of knowledge for the program in order to provide an overall environmental assessment. * * *"21

But directly undercutting this approach, the Commission's brief quotes approvingly from testimony of Chairman Schlesinger:

"We think that it would be a big mistake to attempt to freight on a single environmental report on a single facility, all of these broader considerations; [but] the public has a right to know, concerned citizens have the right to know, what the broader future implications may be of the cumulative impact of a number of such facilities, rather than looking at each facility microscopically."22

In this context the Commission assures us that it is now preparing "a comprehensive environmental survey of the LMFBR, analyzing the direct impact of the potential plants and the broader implications of the program."23 But while this "environmental survey" would apparently discuss many of the same kinds of issues as would a NEPA statement, it remains unclear, even after oral argument, whether the Commission proposes to issue it as a NEPA statement and whether the Commission will observe NEPA's requirements as to contents or the procedures to be followed for drafting and issuing the statement.

Elsewhere in its brief, however, the Commission seems to concede that at some point in time a NEPA statement for the entire program would be required. "Most assuredly, the AEC is not declaring its intention to never file a detailed statement for the overall program."24 In this context the Commission argues that the program has not yet reached that stage where a NEPA statement on the overall program would be either feasible or meaningful. "[T]he remote and speculative nature of the project"25 and the fact that it "remains uncrystallized in form and undetermined in application,"26 lead the Commission to conclude that any detailed analysis at the present time of the overall program, its environmental effects, and alternatives thereto would require the Commission "to look into the crystal ball"27 and "would be meaningless in terms of content."28

The remainder of this section will focus on the Commission's first line of defense-the applicability of NEPA to technology research and development programs and the possibility of substituting an "environmental survey" for a NEPA statement. The following section will discuss the Commission's second argument-the timing of a NEPA statement on the overall program.29

The Commission takes an unnecessarily crabbed approach to NEPA in assuming that the impact statement process was designed only for particular facilities rather than for analysis of the overall effects of broad agency programs. Indeed, quite the contrary is true.

"Individual actions that are related either geographically or as logical parts in a chain of contemplated actions may be more appropriately evaluated in a single, program statement. Such a statement also appears appropriate in connection with * * * the development of a new program that contemplates a number of subsequent actions. * * * [T]he program statement has a number of advantages. It provides an occasion for a more exhaustive consideration of effects and alternatives than would be practicable in a statement on an individual action. It ensures consideration of cumulative impacts that might be slighted in a case-by-case analysis. And it avoids duplicative reconsideration of basic policy questions. * * *"30

We think it plain that at some point in time there should be a detailed statement on the overall LMFBR program. The program comes before the Congress as a "proposal for legislation" each year, in the form of appropriations requests by the Commission. And as the Council on Environmental Quality has noted in its NEPA Guidelines, the statutory phrase "recommendation or report on proposals for legislation" includes "[r]ecommendations or favorable reports relating to legislation including that for appropriations."31 In addition, the program constitutes "major Federal action" within the meaning of the statute.

The statutory phrase "actions significantly affecting the quality of the environment" is intentionally broad, reflecting the Act's attempt to promote an across-the-board adjustment in federal agency decision making so as to make the quality of the environment a concern of every federal agency.32 The legislative history of the Act indicates that the term "actions" refers not only to construction of particular facilities, but includes "project proposals, proposals for new legislation, regulations, policy statements, or expansion or revision of ongoing programs * * *."33 Thus there is "Federal action" within the meaning of the statute not only when an agency proposes to build a facility itself,34 but also whenever an agency makes a decision which permits action by other parties which will affect the quality of the environment.35 NEPA's impact statement procedure has been held to apply where a federal agency approves a lease of land to private parties,36 grants licenses and permits to private parties,37 or approves and funds state highway projects.38 In each of these instances the federal agency took action affecting the environment in the sense that the agency made a decision which permitted some other party-private or governmental-to take action affecting the environment. The Commission does precisely the same thing here by developing a technology which will permit utility companies to take action affecting the environment by building LMFBR power plants. Development of the technology serves as much to affect the environment as does a Commission decision granting a construction permit for a specific plant. Development of the technology is a necessary precondition of construction of any plants.

Application of NEPA to technology development programs is further supported by the legislative history and general policies of the Act. When Congress enacted NEPA, it was well aware that new technologies were a major cause of environmental degradation. The Act's declaration of policy states:

"The Congress [recognizes] the profound impact of man's activity on the interrelations of all components of the natural environment, particularly the profound influences of * * * new and expanding technological advances * * *. * * *"39

And the Senate report notes, as one of the conditions demanding greater concern for the environment:

"A growing technological power which is far outstripping man's capacity to understand and ability to control its impact on the environment."40

NEPA's objective of controlling the impact of technology on the environment cannot be served by all practicable means, see 42 U.S.C. Sec. 4331(b) (1970), unless the statute's action forcing impact statement process41 is applied to ongoing federal agency programs aimed at developing new technologies which, when applied, will affect the environment. To wait until a technology attains the stage of complete commercial feasibility before considering the possible adverse environmental effects attendant upon ultimate application of the technology will undoubtedly frustrate meaningful consideration and balancing of environmental costs against economic and other benefits. Modern technological advances typically stem from massive investments in research and development,42 as is the case here. Technological advances are therefore capital investments and, as such, once brought to a stage of commercial feasibility the investment in their development acts to compel their application.43 Once there has been, in the terms of NEPA, "an irretrievable commitment of resources" in the technology development stage, the balance of environmental costs and economic and other benefits shifts in favor of ultimate application of the technology.44 This explains why, in its recently issued Memorandum to Federal Agencies on Procedures for Improving Environmental Impact Statements, the CEQ recommends:

"* * * In many cases, broad program statements will be appropriate, assessing * * * the overall impact of a large-scale program or chain of contemplated projects, or the environmental implications of research activities that have reached a stage of investment or commitment to implementation likely to restrict later alternatives. * * *"45

Applying the logic of this guideline to the present case, because of the long lead times necessary for development of new commercially feasible technologies for production of electrical energy, the decisions our society makes today as to the direction of research and development will determine what technologies are available 10, 20, or 30 years hence when we must apply some new means of producing electrical energy or face the alternative of energy rationing, through higher prices or otherwise. The manner in which we divide our limited research and development dollars today among various promising technologies in effect determines which technologies will be available, and what type and amount of environmental effects will have to be endured, in the future when we must apply some new technology to meet projected energy demand.

In a very practical sense, then, the Commission's LMFBR program affects the quality of the environment. That the effects will not begin to be felt for several years, perhaps over a decade, is not controlling, for the Act plainly contemplates consideration of "both the long- and short-range implications to man, his physical and social surroundings, and to nature, * * * in order to avoid to the fullest extent practicable undesirable consequences for the environment."46 The Environmental Protection Agency concurs in the view that an assessment of the total LMFBR program is desirable. In its comments on the Commission's draft statement for the first LMFBR demonstration plant, the EPA stated:

"Because of the importance of the LMFBR program, we believe that a thorough and timely evaluation of the overall environmental effects of a national commitment to this concept of electricity generation is warranted. Since the results of the demonstration program could influence a decision to use LMFBR's on a broad scale, we encourage you to fully examine all the environmental effects associated with a national commitment to use LMFBR's to generate electricity as soon as practicable."47

We thus tread firm ground in holding that NEPA requires impact statements for major federal research programs, such as the Commission's LMFBR program, aimed at development of new technologies which, when applied, will significantly affect the quality of the human environment. To the extent the Commission's "environmental survey" would not be issued in accordance with NEPA's procedures for preparation and distribution, it is not an adequate substitute for a NEPA statement. These procedural requirements are not dispensable technicalities, but are crucial if the statement is to serve its dual functions of informing Congress, the President, other concerned agencies and the public of the environmental effects of agency action,48 and of ensuring meaningful consideration of environmental factors at all stages of agency decision making.49

It is apparent, however, that the Commission seeks to avoid issuing its forthcoming "environmental survey" as an impact statement under Section 102, not out of any desire to circumvent NEPA's procedural requirements, but rather because of a fear that Section 102's requirements as to the contents of an impact statement are so strict, particularly as to the need for "detail" in the statement, that any Commission attempt to issue its environmental survey as a NEPA statement would be doomed to failure. While we do not altogether understand the Commission's fears, we feel they are based on certain misapprehensions as to what NEPA requires.

It is now clear that an agency's duties to issue a statement on a project and to consider environmental factors at each stage of agency decision making as to that project are not inherently flexible or discretionary.50 But we have also recognized that the statute admits of some degree of flexibility and agency discretion in determining the contents of impact statements.51 The range of actions covered by NEPA, as we have just seen, is exceedingly broad, ranging from, for example, construction of a particular segment of interstate highway to embarkation upon a broad development program of nationwide significance such as the LMFBR program. The issues, format, length and detail of impact statements for actions as diverse as these must of course differ. NEPA is not a paper tiger,52 but neither is it a straightjacket.53 Drafting a proper impact statement involves much more than filling in the blanks on a government form. NEPA statements can and do vary, from relatively short and simple analyses of the environmental effects of smaller projects to complex multi-volume works for projects of multi-billion-dollar dimensions.

Certainly NEPA does not require the Commission to forecast the deployment and effects of LMFBR power reactors in the year 2000 in the same detail or with the same degree of accuracy as another agency might have to forecast the increased traffic congestion likely to be caused by a proposed highway. Conversely, the Commission may well be expected to devote more resources toward preparation of an impact statement for its multi-billion-dollar program than it would for a project involving a federal investment many times smaller.

Similarly, Section 102(C)'s requirement that the agency describe the anticipated environmental effects of proposed action is subject to a rule of reason. The agency need not foresee the unforseeable, but by the same token neither can it avoid drafting an impact statement simply because describing the environmental effects of and alternatives to particular agency action involves some degree of forecasting. And one of the functions of a NEPA statement is to indicate the extent to which environmental effects are essentially unknown. It must be remembered that the basic thrust of an agency's responsibilities under NEPA is to predict the environmental effects of proposed action before the action is taken and those effects fully known. Reasonable forecasting and speculation is thus implicit in NEPA, and we must reject any attempt by agencies to shirk their responsibilities under NEPA by labeling any and all discussion of future environmental effects as "crystal ball inquiry." "The statute must be construed in the light of reason if it is not to demand what is, fairly speaking, not meaningfully possible * * *."54 But implicit in this rule of reason is the overriding statutory duty of compliance with impact statement procedures to "the fullest extent possible."55

Accordingly, if the Commission's environmental survey is prepared and issued in accordance with NEPA procedures, and if the Commission makes a good faith effort in the survey to describe the reasonably foreseeable environmental impact of the program, alternatives to the program and their reasonably foreseeable environmental impact, and the irreversible and irretrievable commitment of resources the program involves, we see no reason why the survey will not fully satisfy the requirements of Section 102(C). The resulting document may look very different from the impact statement the Commission is used to issuing for a particular nuclear power plant, but this variance should be accepted as a healthy reflection of NEPA's broad scope. It should not be twisted into an excuse for not complying with NEPA at all.

So long as the above described NEPA analysis of the overall program is prepared, we think it of little moment whether that analysis is issued as a separate NEPA statement or whether it is included within a NEPA statement on a particular facility. Questions of format such as these properly reside within the discretion of the issuing agency. To the extent the matter is of any significance, we agree with former Chairman Schlesinger that it would be a "mistake to attempt to freight * * * a single environmental report on a single facility" with the broader considerations necessarily involved in an impact statement on the overall program.56 The issues discussed in an analysis of the overall program would be quite different from those discussed in an analysis of a particular facility, and the relevant audiences, both in government and outside, would vary for each analysis. It would thus seem to make more sense to issue a separate statement for the overall project. This view is shared by the CEQ, which has suggested that in situations such as that faced here the agency should issue a broad program statement on the overall impact of the program, in addition to subsequent statements on major individual actions to cover those localized environmental impacts that were not fully evaluated in the program statement.57

Whether a statement on the overall LMFBR program should be issued now or at some uncertain date in the future is the most difficult question presented by this case. It was especially troubling to the District Court, as reflected in the following colloquy with counsel for appellant:

"I say this: I say there comes a time, we start out with E equals MC², we both agreed you don't have to have the impact statement then. Then there comes a time when there are a thousand of these breeder plants in existence all over the country.

"Sometime before that, surely as anything under the present law, there has to be an impact statement, and a long time before that, actually.

"But the question is, exactly where in this chain do we have to have an impact statement."

In our view, the timing question can best be answered by reference to the underlying policies of NEPA in favor of meaningful, timely information on the effects of agency action. In the early stages of research, when little is known about the technology and when future application of the technology is both doubtful and remote, it may well be impossible to draft a meaningful impact statement. Predictions as to the possible effects of application of the technology would tend toward uninformative generalities,58 arrived at by guesswork rather than analysis. NEPA requires predictions, but not prophecy,59 and impact statements ought not to be modeled upon the works of Jules Verne or H. G. Wells. At the other end of the spectrum, by the time commercial feasibility of the technology is conclusively demonstrated, and the effects of application of the technology certain, the purposes of NEPA will already have been thwarted.60 Substantial investments will have been made in development of the technology and options will have been precluded without consideration of environmental factors. Any statement prepared at such a late date will no doubt be thorough, detailed and accurate, but it will be of little help in ensuring that decisions reflect environmental concerns. Thus we are pulled in two directions. Statements must be written late enough in the development process to contain meaningful information, but they must be written early enough so that whatever information is contained can practically serve as an input into the decision making process.

Determining when to draft an impact statement for a technology development program obviously requires a reconciliation of these competing concerns. Some balance must be struck, and several factors should be weighed in the balance. How likely is the technology to prove commercially feasible, and how soon will that occur? To what extent is meaningful information presently available on the effects of application of the technology and of alternatives and their effects? To what extent are irretrievable commitments being made and options precluded as the development program progresses? How severe will be the environmental effects if the technology does prove commercially feasible?

Answers to questions like these require agency expertise, and therefore the initial and primary responsibility for striking a balance between the competing concerns must rest with the agency itself, not with the courts.61 At the same time, however, some degree of judicial scrutiny of an agency's decision that the time is not yet ripe for a NEPA statement is necessary in order to ensure that the policies of the Act are not being frustrated or ignored. Agency decisions in the environmental area touch on fundamental personal interests in life and health, and these interests have always had a special claim to judicial protection.62

The first function of judicial review in this area should be to require the agency to provide a framework for principled decision making.63 Agencies engaging in long-term technology research and development programs should develop either formal or informal procedures for regular, perhaps annual, evaluation of whether the time for drafting a NEPA statement has arrived.64

More importantly, when the agency has decided that a NEPA statement is not yet necessary, it should state reasons for its decision. The value of such a statement of reasons is becoming generally recognized as courts and agencies grapple with the difficult task of developing procedures for compliance with NEPA. In Hanly v. Kleindienst, 2 Cir., 471 F.2d 823 (1972), cert. denied, 412 U.S. 908, 93 S. Ct. 2290, 36 L. Ed. 2d 974 (1973), for example, the General Services Administration issued a 25-page "Assessment of the Environmental Impact" to justify its conclusion that a proposed downtown jail facility would have no significant effect on the quality of the environment. Similarly, the regulations of the Environmental Protection Agency require that agency to issue a negative declaration when an environmental assessment indicates there will be no significant impact, accompanied by an appraisal documenting the agency's reasons for concluding that no statement is required.65

A statement of reasons will serve two functions. It will ensure that the agency has given adequate consideration to the problem and that it understood the statutory standard. In addition, it will provide a focal point for judicial review of the agency's decision, giving the court the benefit of the agency's expertise.66 In the present case the Commission has not established any procedure to evaluate its ongoing LMFBR program under NEPA. The Commission's basic position throughout this case seems to be that NEPA does not apply at all to overall research and development programs, but rather only to specific facilities. To the extent the Commission's decision not to write a statement for its program represents instead a decision that the time is not yet ripe for such a statement, the Commission has not given reasons for its decision. Nor are the post hoc rationalizations of Commission counsel of much value as a substitute.67 As indicated earlier, the reasons given in this case are ambiguous and inconsistent. And even if they were not, we would have no way of knowing whether they reflect the reasons actually relied upon by the Commission.

We must, therefore, resort to other material in the record to determine whether the Commission properly decided not to draft a statement for the overall program at the present time. Fortunately a substantial record was made before the District Court, consisting in large part of analyses and reports completed by the Commission itself. Our examination of this record leads us to conclude that the Commission could have no rational basis for deciding that the time is not yet ripe for drafting an impact statement on the overall LMFBR program.68 Consideration of each of the facts set out in our balancing test point in the direction of drafting an impact statement now.

To begin with, commercial implementation of LMFBR technology is far from speculative. The massive amounts of money being pumped into this program by Congress and the Presidential Energy Policy statement committing the nation to completion of the first commercialsized demonstration plant by 1980 both indicate widespread confidence that the program will succeed in its twin goals of demonstrating the commercial feasibility of the breeder reactor and producing an industrial infrastructure ready, willing and able to construct such reactors on a commercial basis. The Commission also has a great deal of confidence in the program. As the Director of the Commission's Division of Reactor Development and Technology stated in the introduction to the LMFBR Program Plan:

"Sufficient experience exists to provide assurances that each complex element of the LMFBR program, if carefully pursued in a diligent and disciplined manner, can produce a viable industrial capability which will provide LMFBR plants on a self-sustaining competitive basis at a minimum cost, and in a timely manner. * * *"69

Nor do we think completion of the program may be termed remote. While 10 years may seem a long time in other contexts, by 1968 the Commission already had a carefully planned and detailed schedule for the LMFBR program through the year 1980.70

Secondly, the Commission's own documents indicate that there already exists much meaningful information on the reasonably foreseeable environmental impact of development of LMFBR technology. The impact statement for the first demonstration plant, for example, contains detailed estimates of the radioactive wastes produced annually by a single commercial-scale LMFBR electrical power plant. It also contains estimates of the amount of land area necessary for short-and long-term storage of such wastes.71 Other studies completed by the Commission contain reasonable estimates of the expected deployment of LMFBR power plants through the year 2000 if the program proceeds on schedule.72 The overall environmental effects of the program could thus be extrapolated from already existing data. We see no reason why the Commission could not, from information already before us, explore in a NEPA statement such vital matters as, for example, the total amounts of radioactive wastes which will be produced by development of this technology and the total amounts of land area needed for long-and shortterm storage of these wastes. The Commission's continual references to "crystal ball inquiry" have a hollow ring in light of the fact that the Commission has already prepared a complex cost-benefit analysis of the LMFBR program, involving projections through and beyond the year 2000.73 This cost-benefit analysis notably lacks any attempt to quantify the environmental costs or benefits associated with the program so that these factors could play a role in the analysis. The Commission evidently believes its costbenefit forecasts are accurate enough for use in convincing Congress to fund the program74 and for use in planning various supporting facilities and fuel production requirements.75 We think in turn that parallel environmental forecasts would be accurate enough for use in planning how to cope with and minimize the detrimental environmental effects attendant upon deployment of these reactors, and in evaluating the program's overall desirability.

It also seems clear that the Commission has available much information on alternatives to the program and their environmental effects. The Commission's own answer to the complaint in this case, at 9-10, states:

"Alternatives to the LMFBR program have received serious national attention, study and debate. This reactor concept has been under continual review since its conception in the late 1940's. Alternative energy systems have been studied and compared by both governmental and private groups and the conclusion always has been that the LMFBR merits the highest priority within the nation's energy program. * * *"

Similarly, in a speech given in 1971 Commissioner Ramey stated:

"* * * [A] study has been initiated by the AEC to analyze the comparative risks and benefits from each form of electric power generation through the year 2000. We are hoping to have this study completed in about a year. It will include material on the characteristics of the U. S. power industry, the fuel cycles of coal, oil, natural gas and nuclear, a quantification of the effects of these fuels, legal and regulatory influences and what the effects of technological change might be. The goal of this study is to produce a comparison of the advantages and disadvantages of each form of electric power generation through the year 2000."76

One would be hard pressed to give a better description of what the discussion of alternatives in a NEPA statement on the overall LMFBR program should look like.

Moving to another factor in our balancing test, it is evident that there are sizable irretrievable commitments of resources taking place in the program. As indicated in the introduction, the federal commitment to this program is now over $100 million per year. The Commission itself admits that one of the results of this commitment has been to slow down development of other new technologies, such as alternative breeder reactor concepts, which would also require a large investment to move from the stage of technical and theoretical research into a stage of commercial feasibility.77

Finally, we cannot ignore the fact that the anticipated effects of the LMFBR program on the environment are among the most significant, and most controversial, of all federal programs. We deal here with a radical change in the manner in which our entire nation produces electricity. In many respects, no doubt, this new technique of producing electricity will be less harmful to the environment than present fossil fuel generating plants. But it is evident that the program presents unique and unprecedented environmental hazards. The Commission itself concedes it is expected that by the year 2000 some 600,000 cubic feet of high-level concentrated radioactive wastes will have been generated.78 These wastes will pose an admitted hazard to human health for hundreds of years, and will have to be maintained in special repositories. The environmental problems attendant upon processing, transporting and storing these wastes, and the other environmental issues raised by widespread deployment of LMFBR power plants, warrant the most searching scrutiny under NEPA.

Of course, some of the environmental impacts of the program are still shrouded in uncertainty. But one of the functions of an impact statement is to point up uncertainties where they exist. And whatever statement is drafted by the Commission can be amended to reflect newly obtained information as the program progresses.79

At this point it is appropriate that we emphasize the limited nature of the issue under review in this case. By our holding we do not intend in any way to question either the wisdom of the Commission's LMFBR program or the Commission's dedication to protection of the public health and safety. But as one commentator has noted:

"It is obvious that government programs for development of technology do not proceed in callous disregard of the public welfare. It is equally obvious, however, that in the process of balancing benefits against risks, the government sponsors of technological programs are making decisions as to whether the public may be asked to assume certain risks or burdens which are determined to be 'reasonable' or not 'undue.' Since such determinations are presently made within small closed circles of experts who have a vested interest in the technology, the basic question is whether the public itself would be willing to assume these risks and burdens for the sake of obtaining the promised benefits."80

So far as the human environment is concerned, NEPA has provided a means of answering this "basic question" by requiring full disclosure to the public and to other entities within government of all environmental effects likely to stem from agency action.

Accordingly, the judgment of the District Court is reversed and the case is remanded to the District Court for entry of appropriate declaratory relief.

So ordered.