Expanded Preliminary Assessment Report Guidance

INTRODUCTION

Provide the site name and location. Discuss who performed the XPA work, for whom the work was performed, under what authority or type of agreement, and for what purpose. An example of how this section might be written appears below.

This Expanded Preliminary Assessment (XPA) report has been completed by [Preparer's Name] for the [Site Name] site, located in [City, State]. The purpose of conducting the XPA and its associated sampling was to collect information beyond that gathered in the Preliminary Assessment (PA) or PA equivalent so that DEQ could better evaluate any threat(s) the site may pose to the surrounding population and environment.

An XPA typically consists of a field investigation with limited sampling; and may also include investigative work involving interviews with site owner/operators, or file research. The XPA is limited in scope and is not intended as a full characterization of the site. Field sampling was conducted under protocols accepted by DEQ and the U. S. Environmental Protection Agency.

Authority for conducting the XPA is provided in Oregon Revised Statute (ORS) 465.245.

SITE BACKGROUND/APPARENT PROBLEM

Describe the physical characteristics of the site and the area immediately surrounding it. Include information on location, size, and current and former operational and ownership history. Include after this section, or at the end of the report, a legible, scaled site location map.

Discuss the apparent problem(s) at the site. Identify all areas at the site where hazardous substances are known or suspected to have been released, or may be released in the future. [Much of the information in this section can be lifted from Section 2 of the XPA sample plan.]

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