1 Introduction

1.2 BACKGROUND

The Matrix as designed is intended to facilitate time and cost savings and promote the use of innovative fieldable technologies. Each technology listed has been identified as fieldable; however, an individual technology may not be widely used because of cost, public acceptance, or implementability. The target audience for this document includes the following:

1. Remedial Project Managers (RPMs) and their supporting contractors and consultants.
2. Environmental Protection Agency (EPA) regional representatives, laboratory and field staff, and Brownfields Coordinators.
3. Federal, State, and local environmental regulators.
4. Department of Defense (DoD) installation environmental coordinators including:
   • Congressional staff representatives
   • Public interest groups
   • Private sector consultants

This document is not intended to be the sole basis for selection of a specific site characterization technology. The Matrix and supporting Reference Guide should be used only as screening documents and the exclusion or omission of a specific characterization technology does not necessarily mean that a technology is not applicable to a site. It is important to recognize that the amount of information about technologies is rapidly growing. After identifying potentially applicable technologies and prior to selection, it is essential that RPMs consult the individual characterization technology vendor and/or government point of contact to evaluate technology, cost, up-to-date performance data, and site-specific conditions. Additional information to support identification and analysis of potentially applicable technologies can be obtained by consulting published references and contacting technology experts.