A National Overview of Monitored Natural Attenuation and Enhanced Attenuation – Results of an Interstate Technology Regulatory Council Survey

Authors:  Judie Kean, Florida Department of Environmental Protection and EACO Team co-leader; John Doyon, New Jersey Department of Environmental Protection; Karen M. Vangelas, Savannah River National Laboratory; Grant Carey, Connestoga Rovers Associates; and Kimberly Wilson, South Carolina Department of Health and Environmental Control and EACO team co-leader.

Description:  This paper highlights the findings of a survey conducted by the team to facilitate an understanding of the key issues related to approving monitored natural attenuation and to identify the level of interest by the regulator community in the strategy of Enhanced Attenuation.

File Name:  EACO_Survey_Results_paper.pdf

Enhanced Attenuation – Fact Sheet

Authors:  The EACO Team

Description:  This fact sheet provides a high level definition/description of Enhanced Attenuation.

File Name:  EA_Fact_Sheet.pdf

A Decision Flowchart for the Use of Monitored Natural Attenuation and Enhanced Attenuation at Sites with Chlorinated Organic Plumes

Authors: The EACO Team

Description:  This short document introduces a decision flowchart that integrates the concepts of mass balance, plume stability and Enhanced Attenuation into the existing regulatory framework for remediating waste sites.  This flowchart is the centerpiece of the technical regulatory document this team will write and on which they will conduct training.

File Name:  EACODecisionFlowchart_v1.pdf

Technical and Regulatory Guidance - Enhanced Attenuation: Chlorinated Organics

Authors: The Interstate Technology & Regulatory Council Enhanced Attenuation: Chlorinated Organics Team

Description:  Thhe ITRC Enhanced Attenuation: Chlorinated Organics (EACO) Team developed this guidance, which includes a protocol to assist in a smooth transition (or a bridge) between aggressive remedial actions and MNA, and thus the concept of enhanced attenuation (EA) was born.

File Name:  EACO-techreg2008.pdf