Assessing the Feasibility of DNAPL Source Zone Remediation: Review of Case Studies
Abstract
The overall goal of this project was to gather information on the relative successes of remediation applications under different site conditions in order to initiate the development of guidelines on DNAPL source treatment. Members of the environmental community that had attempted to remediate DNAPL source zone areas were invited to participate in a web-based survey. which remained open for several months. Survey respondents were asked a number of questions dealing with site-specific issues (e.g.. geology. hydrogeology. contaminant distribution. monitoring network) and technology specific issues (c_U.. type of remedial technology. remediation stage. cost. treatment effectiveness). The number of survey respondents totaled 213. Of the 213. complete sets of data were obtained for 118 locations. Data from 21 published case studies was also entered into the survey. This report also includes a brief overview of chlorinated solvent DNAPL contamination and remediation processes. The data collected from this survey suggests that DNAPL remediation efficacy is extremely difficult to gauge. and although employing aggressive remedial technologies cannot achieve site closure. significant mass removal can be achieved.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2004
- Accession Number
- ADA423597