Title: EVALUATING LONG-TERM IMPACTS OF SOIL-MIXING SOURCE-ZONE TREATMENT USING CRYOGENIC CORE COLLECTION 
Resource Type: document --> technical publication --> report 
Country: USA 
Language(s): English
 
Year: 2017 
Author 1/Producer: ESTCP  
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Report/Document number/description: Project ER-201587 
Publisher Country: USA 
Publisher web link (root): https://www.serdp-estcp.org
Report / download web link (=direct link): https://www.serdp-estcp.org/content/download/45611/425408/fi ...  
EUGRIS Keyword(s): Contaminated land-->Remediation options-->In situ treatment technologies
 
Short description: This project focused on DNAPL source zone remediation using soil mixing with zero-valent iron and bentonite, a technology referred to as ZVI-clay soil mixing. In November 2012, the soil mixing technology was implemented in a TCE DNAPL source zone at Site 17, Naval Support Facility Indian Head, Maryland. Four years of remediation performance data indicate that TCE concentrations in soil and groundwater within the treated-soil zone had been reduced by up to four and five orders of magnitude, respectively. Groundwater concentrations in portions of the former-DNAPL source-zone approached MCLs within four years of soil-mixing completion. To assess post-remediation potential for TCE concentrations to rebound, as well as effects of remediation on natural fate and transport processes, high-resolution data representing both high-permeability and low-permeability soil strata were collected using cryogenic core collection. 
Submitted By: Professor Paul Bardos WhoDoesWhat?      Last update: 10/11/2017