(a) The environmental impact statement will include a detailed statement on:
(1) A reasonable range of alternatives to the proposed agency action, including an analysis of any adverse environmental impacts of not implementing the proposed agency action in the case of a no action alternative, that are, in NASA's expert judgment, technically and economically feasible and meet the purpose and need of the proposal.
(2) Reasonably foreseeable environmental effects of the proposed agency action and alternatives including the no action alternative.
(3) Any reasonably foreseeable adverse environmental effects which cannot be avoided should the proposal be implemented.
(4) The relationship between local short-term uses of the human environment and the maintenance and enhancement of long-term productivity.
(5) Any irreversible and irretrievable commitments of Federal resources which would be involved in the proposed agency action should it be implemented.
(6) Any means identified to mitigate adverse environmental effects of the proposed action. NASA is mindful in this respect that NEPA itself does not require or authorize NASA to impose any mitigation measures in environmental impact statements.
(b) The environmental impact statement will define a scope of analysis.
(1) In preparing the environmental impact statement, NASA will focus its analysis on whether the environmental effects of the action or project at hand are significant.
(2) Similarly, NASA will document in the environmental impact statement where and how it drew a reasonable and manageable line relating to its consideration of any environmental effects from the action or project at hand that extend outside the geographical territory of the project or might materialize later in time.
(c) Environmental impact statements will discuss effects in proportion to their significance. With respect to issues that are not of a substantive nature, lack a close causal connection, and do not meaningfully inform the consideration of environmental effects and the resulting decision on how to proceed, there will be no more than the brief possible discussion to explain why those issues are not substantive and therefore not worthy of any further analysis. Environmental impact statements will be analytic, concise, and no longer than necessary to comply with NEPA considering the congressionally mandated page limits and deadlines.