Determining Source Attenuation History to Support Closure by Natural Attenuation
Abstract
An innovative approach for reconstructing the contaminant concentration vs. time trend i.e., the source history for a site using high-resolution soil data from low permeability (low-k) zones was tested during this project. Essentially, soil cores in these zones serve a similar role as tree rings, in that the cores store information about historic environmental conditions. For the case of contaminants that have migrated into low permeability zones via diffusion and slow advection, the concentration vs. depth profile can be used to determine if attenuation of the contaminant source in the overlying transmissive zones has occurred. This can be an important line of evidence for evaluating the viability of monitored natural attenuation for evaluating the viability of monitored natural attenuation for site management. The project demonstrated high-resolution sampling methods.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2013
- Accession Number
- ADA602381
Entities
People
- Beth L. Parker
- Charles J. Newell
- David T Adamson
- Steven Chapman
- Tom Sale
Organizations
- GSI Environmental (United States)