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In situ flushing

In situ flushing - United States Environmental Protection...

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United States Office of Solid Waste and EPA 542-F-01-011 Environmental Protection Emergency Response May 2001 Agency (5102G) www.epa.gov/superfund/sites www.cluin.org A Citizen’s Guide to In Situ Flushing ? ? EPA uses many methods to clean up pollution at Superfund and other sites. Some, like in situ flushing, are consid- ered new or innovative . Such methods can be quicker and cheaper than more common methods. If you live, work, or go to school near a Superfund site, you may want to learn more about cleanup methods. Perhaps they are being used or are proposed for use at your site. How do they work? Are they safe? This Citizen’s Guide is one in a series to help answer your questions. What is in situ flushing? What is in situ flushing? In situ flushing is a way to clean up harmful chemicals in polluted soil and groundwater by pumping water or chemicals into the ground. This helps flush the harmful chemicals from the ground by moving them toward wells that pump the chemicals out of the ground. The pro- cess works in situ , which means the polluted soil is cleaned up in place and does not need to be dug up. How does it work? How does it work? The goal of in situ flushing is to improve the effectiveness of pump and treat cleanup methods. Pump and treat methods pump polluted groundwater up through wells to the ground surface where it is cleaned up. (See
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