NPS Director's Order 12: Conservation Planning, Environmental Impact Analysis and Decision Making
Table of Contents
Disclaimer Information
Introduction | Overview of the NEPA Process | Categorical Exclusions | Environmental Impact Statements | Environmental Assessments | Decision Documents | Programmatic Documents and Planning | NPS Review of Non-NPS Documents | Definitions and Acronyms | Appendix 1: Environmental Screening Form | Appendix 2: Categorical Exclusion Form | Contacts | Index
Arlington House, the Robert E. Lee Memorial, VA5.3 Environmental Assessments — Length of an EA
Introduction | When to Prepare an EA | Length of an EA | Format and Content of an EA | Public Involvement | Administrative Process of Review of EAs

It is not uncommon for an NPS proposal to be complex enough that an EA of 30, 40, or even 50-plus pages is needed to fully examine impacts. An EA that is longer than 50 pages may just be an EIS in disguise. You should carefully consider whether this is true of your park's EA, and prepare the EIS if it would be more appropriate (Q36b).

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