Title: Post-Remediation Evaluation of EVO Treatment - How Can We Improve Performance? 
Resource Type: document --> case study 
Country: USA 
Language(s): English
Year: 2018 
Author 1/Producer: ESTCP 
Author / Producer Type: Agency, regulator or other governmental or inter-governmental body 
Report/Document number/description: ESTCP Project ER-201581; Nov 2017 
Publisher Country: USA 
Publisher web link (root): http://www.serdp-estcp.org
Report / download web link (=direct link): https://www.serdp-estcp.org/content/download/46673/436329/fi ...  
EUGRIS Keyword(s): Contaminated land-->Remediation options-->In situ treatment technologies
Short description: Enhanced reductive dechlorination (ERD) with emulsified vegetable oil (EVO) has been used at hundreds of sites to remediate chlorinated solvents, chromate, uranium, perchlorate, and explosive constituents. The process commonly involves injecting EVO, nutrients, pH buffer or base, and microbial cultures to adjust biogeochemical conditions in the immediate vicinity of the contaminant(s). Field, lab, and design evaluations of EVO use for TCE contamination at two sites at the former Naval Training Center Orlando are presented in this report. Although the remediation systems at both sites initially achieved substantial reductions in TCE concentrations, concentrations of cDCE and VC increased and remain elevated in some wells due to TCE degradation. Results from the project evaluations were used to identify the reasons for the ERD systems' failure to meet cleanup goals and to develop new approaches and procedures to improve performance.  
Submitted By: Professor Paul Bardos WhoDoesWhat?      Last update: 07/03/2018