Title: Calculation and Use of First-Order Rate Constants for Monitored Natural Attenuation Studies 
Resource Type: document --> guidance / decision support 
Country: USA 
Year: 2002 
Availability: Calculation and Use of First-Order Rate Constants for Monitored Natural Attenuation Studies 
Author 1/Producer: Charles J. Newell1, Hanadi S. Rifai2, John T. Wilson, John A. Connor1, Julia A. Aziz1, and Monica P. Suarez 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Publisher: US EPA 
Report / download web link (=direct link): http://www.epa.gov/ada/download/issue/540S02500.pdf  
EUGRIS Keyword(s): Contaminated land-->Remediation options-->MNA
 
Short description: Extract: This issue paper explains when and how to apply first-order attenuation rate constant calculations in monitored natural attenuation (MNA) studies. First-order attenuation rate constant calculations can be an important tool for evaluating natural attenuation processes at ground-water contamination sites. Specific applications identified in U.S. EPA guidelines (U.S. EPA, 1999) include use in characterization of plume trends (shrinking, expanding, or showing relatively little change), as well as estimation of the time required for achieving remediation goals. However, the use of the attenuation rate data for these purposes is complicated as different types of first-order rate constants represent very different attenuation processes... 
Link to Organisation(s): EPA Environmental Protection Agency
 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 26/10/2006