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EPA/600/R07/140
Monitored Natural Attenuation
of Inorganic Contaminants in
Ground Water
Volume 2 -
Assessment for Non-Radionuclides
Including Arsenic, Cadmium, Chromium,
Copper, Lead, Nickel, Nitrate,
Perchlorate, and Selenium (PDF)
(124 pp, 1.8MB, About PDF)
Abstract
This document represents the second volume of a set of three volumes that address the technical basis and requirements for assessing the potential applicability of MNA as part of a ground-water remedy for plumes with non-radionuclide and/or radionuclide inorganic contaminants. Volume 2, titled "Assessment for Non-Radionuclides Including Arsenic, Cadmium, Chromium, Copper, Lead, Nickel, Nitrate, Perchlorate, and Selenium," consists of individual chapters that describe 1) the natural processes that may result in the attenuation of the listed contaminants and 2) data requirements to be met during site characterization. Emphasis is placed on characterization of immobilization and/or degradation processes that may control contaminant attenuation, as well as technical approaches to assess performance characteristics of the MNA remedy. A tiered analysis approach is presented to assist in organizing site characterization tasks.