EP 1110-1-27
27 Jan 00
Chapter 1
Introduction
1-1. Purpose
a. This engineer pamphlet (EP) provides geotechnical, chemical, microbial, and operational
guidance for U.S. Army Corps of Engineers (USACE) elements in identifying aspects of groundwater
extraction and injection wells and systems that have led to failures of either the extraction and injection
wells or related piping and treatment systems at hazardous, toxic, and/or radioactive waste (HTRW) sites.
These guidelines are a compilation of specific problems that have been identified in each of several
categories, along with a technical discussion of their diagnoses and solutions.
b. This EP provides the multidisciplinary guidance needed to:
(1) Sustain the performance of ground water extraction and injection systems so that site mission
(ground water cleanup) failure does not occur.
(2) Delay substantial, radical rehabilitation of these systems as long as possible.
c. This EP will provide:
(1) Background and rationale for well maintenance problems.
(2) Demonstrated prevention and remedial methods for wells.
(3) Specific guidance in applying solutions.
d. This background and associated recommendations will be based on experience and applied
research by USACE, its contractors, and other experienced parties.
e. The USACE and the programs it oversees in HTRW ground water remediation have the
responsibility to ensure that the projects fulfill their mission of cleaning up ground Water to the extent
necessary (defined by risk analysis or legal maximum contaminant levels (MCLs)) to protect human
health and the environment where technically feasible. Pumping and injection well systems are integral
parts of these efforts on many sites. It is the management's responsibility to ensure that well systems
installed continue to function at the optimal level.
1-2. Applicability
This EP applies to all USACE Commands having Civil Works and/or Military Programs HTRW project
responsibilities.
1-3. References
Required and related publications are listed in Appendix A.
1-4. Distribution Statement
Approved for public release; distribution is unlimited.
1-1
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