An official website of the United States government
Here's how you know
A .mil website belongs to an official U.S. Department of Defense organization in the United States.
A lock (lock ) or https:// means you’ve safely connected to the .mil website. Share sensitive information only on official, secure websites.

Environmental Cleanup Process

The Navy's environmental cleanup program follows a step-by-step investigation and cleanup process summarized by the following stages:
  • Preliminary Assessment / Site Inspection (PA/SI): The Navy gathers and reviews information on use, storage, and spills of known or suspected hazardous substances to determine whether a particular site contains contamination and requires further study.
  • Remedial Investigation (RI): The Navy conducts a full investigation of a site by collecting and analyzing samples to determine the types of contaminants and how far they may have spread.
  • Feasibility Study (FS): The Navy evaluates possible cleanup alternatives to protect human health and the environment.
  • Proposed Plan (PP): The Navy identifies its preferred cleanup alternative from those examined in the FS. A public meeting is held to solicit public input and community concerns about the proposed plan.
  • Record of Decision (ROD): A decision document signed by the Navy and the regulators that documents the final selection of a remedial action and presents the selection rationale.
  • Remedial Design (RD): The Navy prepares plans and specifications for implementation of the selected remedial action.
  • Remedial Action (RA): The Navy conducts the site cleanup action.
  • Long-Term Monitoring (LTM) and or five year review assessment: If required, monitoring and periodic review of a site is conducted to verify that the remedial action functions as intended to protect human health and the environment.
In some cases, the Navy and regulatory agencies may conduct a Removal Action of hazardous substances at a site. A Removal Action can be conducted at any time during the Remedial Action process and is used when an expedited cleanup is determined to be in the best interests of the government and surrounding community. Removal Actions are classified as either Emergency Removal Actions, Time-Critical Removal Actions, or Non-Time-Critical Removal Actions depending on the urgency for site cleanup.

For Non-Time-Critical Removal Actions, preparation of the following documents are required:
  • Engineering Evaluation/Cost Analysis (EE/CA): An evaluation of the effectiveness, implementability, and costs of various Removal Action alternatives, with a recommendation for a favored alternative.
  • Action Memorandum (AM): A document that summarizes the alternative selected for the action, which is normally announced with a public notice.

Google Translation Disclaimer

  • Google Translate, a third party service provided by Google, performs all translations directly and dynamically.
  • Commander, Navy Region Southwest, has no control over the features, functions, or performance of the Google Translate service.
  • The automated translations should not be considered exact and should be used only as an approximation of the original English language content.
  • This service is meant solely for the assistance of limited English-speaking users of the website.
  • Commander, Navy Region Southwest, does not warrant the accuracy, reliability, or timeliness of any information translated.
  • Some items cannot be translated, including but not limited to image buttons, drop down menus, graphics, photos, or portable document formats (pdfs).
  • Commander, Navy Region Southwest, does not directly endorse Google Translate or imply that it is the only language translation solution available to users.
  • All site visitors may choose to use similar tools for their translation needs. Any individuals or parties that use Commander, Navy Region Southwest, content in translated form, whether by Google Translate or by any other translation services, do so at their own risk.
  • IE users: Please note that Google Translate may not render correctly when using Internet Explorer. Users are advised to use MS Edge, Safari, Chrome, or Firefox browser to take full advantage of the Google Translate feature.
  • The official text of content on this site is the English version found on this website. If any questions arise related to the accuracy of the information contained in translated text, refer to the English version on this website, it is the official version.

Commander, Navy Region Southwest   |   750 Pacific Highway   |   San Diego, CA 92132
Official U.S. Navy Website