CLU-IN.ORG | Technology Focus: IN SITU FLUSHING, Overview

In Situ Flushing

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◊ Air Sparging
◊ Bioreactor Landfills
◊ Bioremediation of Chlorinated Solvents
◊ Bioventing and Biosparging
◊ Electrokinetics: Electric Current Technologies
◊ Fracturing
◊ Ground-Water Circulating Wells
◊ In Situ Flushing
◊ In Situ Oxidation
◊ Multi-Phase Extraction
◊ Natural Attenuation
◊ Permeable Reactive Barriers
◊ Phytoremediation
◊ Remediation Optimization
◊ Soil Vapor Extraction
◊ Soil Washing
◊ Solvent Extraction
◊ Thermal Treatment: Ex Situ
◊ Thermal Treatment: In Situ

For more information on Surfactant or Cosolvent Flushing, please contact:

Linda Fiedler
Technology Assessment Branch
(703) 603-7194
fiedler.linda@epa.gov

Overview

For in situ soil flushing, large volumes of water, at times supplemented with surfactants, cosolvents, or treatment compounds, are applied to the soil or injected into the groundwater to raise the water table into the contaminated soil zone. Injected water and treatment agents are isolated within the underlying aquifer and recovered together with flushed contaminants.

4.8 Soil Flushing (In Situ Remediation Technology)
In Remediation Technologies Screening Matrix and Reference Guide, Version 3.0. Federal Remediation Technologies Roundtable.

A Citizen's Guide to In Situ Flushing
EPA 542-F-01-011, 2001

Download Spanish Translation (159K/PDF)

The Citizen's Guide Series are 2-page fact sheets that provide a general description on approaches to clean up contaminated waste sites. The fact sheets cover five questions about each clean up approach: What is it?, How does it work?, Is it safe?, How long will it take?, and Why use it?.

Guía para el Ciudadano sobre Enjuague In Situ
EPA 542-F-01-011S, 2001

La Serie de Guías del Ciudadano son boletines de dos páginas con datos que proveen una descripción general en cómo sanear sitios contaminados. Estos boletines con datos que cubren cinco preguntas acerca de cada procedimiento de saneamiento: ¿Qúe es?, ¿Cómo trabaja?, ¿Es seguro?, ¿Cúanto tiempo requerirá?, y ¿Por qué debe de usarse?

Surfactant Enhanced Aquifer Remediation
G.A. Pope, Center for Petroleum and Geosystems Engineering, University of Texas at Austin.

Technology Overview Report: In Situ Flushing
1997

This report prepared by the Ground Water Remediation Technologies Analysis Center (GWRTAC) provides an introduction to the general principles of in situ flushing technology, its criteria for application, performance, advantages and limitations to use, and references.

Treatment Technologies for Site Cleanup: Annual Status Report (ASR), Twelfth Edition
EPA 542-R-07-012, 2007

ASR Remediation Database

View/Download Previous Editions

The Twelfth Edition of this report, published by the EPA Office of Superfund Remediation and Technology Innovation (OSRTI) in September 2007, documents treatment technology applications at more than 1,900 soil and groundwater cleanup projects at National Priorities List (NPL) sites. The status of more than 1,200 projects included in the ASR Eleventh Edition is updated, and information about 192 new projects derived from Records of Decision (ROD) signed from 2002 through 2005 is added. The report also includes a special section about on-site containment remedies. The ASR is based on the analysis of nearly 3,000 RODs signed since 1982 at 1,536 NPL sites. The online version includes new downloadable spreadsheets with the data for several of the key tables and figures in the report. Specific information about each technology application included in the ASR Twelfth Edition is available in the ASR Remediation Database.