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NAVFAC Hawaii Environmental 

NAVFAC's Environmental Program provides high quality, timely, cost effective and efficient environmental support to the Navy, the Marine Corps, and other clients. Environmental management is the means of conserving, protecting and restoring the environment and natural and cultural resources for future generations. We offer sound environmental management and technical support necessary for Navy and Marine Corps compliance with federal, state, local and host nation regulations. We strive to continually improve our relationship with our clients, regulators and other stakeholders through focus on common operational goals, sharing of information regarding our products and services and availability of a highly skilled environmental workforce. Good environmental management can enhance the ability to accomplish assigned missions as well as improve community and public relations. Our staff of engineers, scientists, environmental professionals, technicians and management professionals is organized to be responsive and to provide quality and innovative products and services.  


The Department of the Navy (DON) Environmental Restoration (ER) process starts with identification and investigation of contaminated sites, followed by selection, design, and implementation of remedial actions to achieve remediation goals. This process is designed in accordance with CERCLA requirements.
There are two types of DON ER responses.

  1. Removal Actions are taken to address releases or threatened releases requiring prompt action. 

  2. Remedial Actions are taken to permanently and significantly reduce the dangers associated with releases or threats of releases of hazardous substances that are serious, but not immediately life threatening. The Remedial Action process specifies the steps to thoroughly evaluate the nature and extent of contamination, and provides a structure to identify and evaluate cleanup alternatives.



Remedial Action Process
The basic steps are as follows:

  •  Preliminary Assessment/Site Inspection (PA/SI) evaluates if past waste management practices resulted in release of hazardous substances.

  •   Remedial Investigation/Feasibility Study (RI/FS) are typically performed together. The RI is a sampling and analysis program to determine the nature and extent of contamination, and to determine what risk is posed by contaminates of concern at the site. The FS is a detailed evaluation of remediation alternatives.

  • Proposed Plan (PP) presents the preferred cleanup alternative and explains why the alternative was chosen. This document has a public comment period.

  • Record of Decision (ROD) documents the selected cleanup solution.

  • Remedial Design (RD)/Remedial Action (RA) prepares a design for the cleanup alternative; and implements the cleanup alternative.

  •  Remedial Action Operations (RAO) is part of the RA. It is done when the cleanup alternative involves the operations of a cleanup system/technology to achieve a remedial goal.

  •   Long-Term Management (LTM) occurs at sites where hazardous substances remain after the RA has been completed. This may involve sampling/monitoring/maintenance of the remedial action.

  • No Further Action (NFA) takes place when all necessary remedial action activities are complete and the DON and regulatory agencies agree that no further action (NFA) is appropriate at the site.



Removal Action Process
In some cases, the DON and regulatory agencies may conduct a Removal Action of hazardous substances from a site. These removal actions are carried out in accordance with federal and state requirements.
The DON can conduct a removal action if any one or more of the following criteria are present:

  • An imminent threat to human health or the environment exists.

  • The source of the contamination can be removed quickly and effectively.

  • Access to contamination can be limited.

  • A removal action is the fastest way of remediating the site.

The basic steps are as follows:

  •  Engineering Evaluation/Cost Analysis (EE/CA) evaluates cleanup alternatives. This document has a public comment period.

  • Action Memorandum (AM) documents the selected cleanup alternative.

This image, taken in 1952, provides an overlay of the former flightline area and the current Onizuka Village housing area on Joint Base Pearl Harbor-Hickam.

​Onizuka Village Project

During the Onizuka Village housing redevelopment in 2009, petroleum affected soil was found in several of the excavation locations (as indicated by red asterisks in image [right]) between nine and eleven feet below ground surface. The find was reported to the Hawaii Department of Health (DOH). After consultation with the DOH, and preliminary assessment of the information available at the time of the site, redevelopment continued. While a health hazard is not anticipated, the Navy must perform due diligence by investigating the site using DOH standards and ensuring that we are protective of human health and the environment. In order to complete its assessment, NAVFAC Hawaii will collect samples in Onizuka Village starting in January 2013. Please be assured there is no health risk to residents as a result of the work being conducted. In addition, it is important to note that your drinking water comes from fresh water aquifers located off base and is completely safe.
NAVFAC Hawaii - The Navy has a program which investigates and remediates sites where there is contamination from past military practices. The Navy’s agent in Hawaii to conduct these studies and remediation of such sites is Naval Facilities Engineering Command (NAVFAC) Hawaii.

Fact Sheet - Onizuka Village Treatability Study - July 2017
Fact Sheet - Onizuka Village Treatability Study - June 2014
Fact Sheet - Onizuka Village Supplemental Remedial Investigation - December 2013
Fact Sheet - Onizuka Village Background, Remedial Investigation & Upcoming Work - July 2013
Fact Sheet - Onizuka Village Background & Remedial Investigation - January 2013
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