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Innovations in Groundwater Remediation
http://edis.ifas.ufl.edu/ ( Publisher's URL )
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Permanent Link: http://ufdc.ufl.edu/IR00001532/00001
 Material Information
Title: Innovations in Groundwater Remediation
Physical Description: Fact Sheet
Creator: Munoz-Carpena, R.
Publisher: University of Florida Cooperative Extension Service, Institute of Food and Agriculture Sciences, EDIS
Place of Publication: Gainesville, Fla.
Publication Date: 2005
 Notes
Acquisition: Collected for University of Florida's Institutional Repository by the UFIR Self-Submittal tool. Submitted by Melanie Mercer.
Publication Status: Published
General Note: "Original publication date January 2005. Revised February 2005. Reviewed March 2008."
General Note: "ABE349"
 Record Information
Source Institution: University of Florida Institutional Repository
Holding Location: University of Florida
Rights Management: All rights reserved by the submitter.
System ID: IR00001532:00001

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PAGE 1

These new techniques offer several advantages. The following field tests confirm the same: Hill Air Force Base, Utah The first field-scale demonstration of in-situ flushing using two separate techniques was conducted in 1995 and 1996. The first technique used an ethanol-pentanol mixture while the second one used a surfactant (Brij 97) and alcohol (pentanol mixture). Both techniques were used to remove jet fuel/ BTEX (benzene, ethylbenzene, toulene, xylene), pesticides, and volatile and semi-volatile organic compounds (VOCs and SVOCs). Hill Air Force Base was also the venue for the first field-scale demonstration of partitioning tracer test for nonaqueous phase liquid (NAPL) source zone delineation. Borden Canadian Forces Base, Borden, Ontario, Canada This base was witness to the first field test of partitioning tracers measuring a known volume of dense nonaqueous phase liquid (DNAPL). The tracer predicted the perchloroethylene (PCE) volume within 2 percent and ethanol flushing removed 85 percent of the targeted DNAPL. Sages Dry Cleaners, Jacksonville, Florida This was the venue of the first commercial pilot demonstration of DNAPL removal (specifically PCE) using in-site flushing with ethanol. DNAPLs are common occurrences in dry cleaning activities. Dover Air Force Base, Delaware A known volume of PCE was introduced, which emulates sparse DNAPL distributions found at actual sites. The PCE was removed using in-situ flushing with ethanol. This constituted the first demonstration of ethanol recovery and reuse. overleaf 4 4 Center for Natural Resources 1051 McCarty Hall D PO Box 110230 Gainesville, FL 32611-0230 352-392-7622 622-7622 (suncom) 352-846-2856 (fax) cnr_mail@mail.ifas.ufl.edu (email) Innovations in Groundwater Remediation The UF approach is based on injecting mixtures of water, alcohols (co-solvents) and/or detergents (surfactants) into contaminated areas. These additives dissolve nearly 1,000 to 10,000 times more of the contaminant, thereby drastically reducing the clean-up time. The flushing agents dissolve the pollutants, which are then flushed out for disposal or treatment above ground. The relatively-high cost of water-only remediation leads many companies to stall restoration, accepting less expensive legal fees incurred from delaying clean-up efforts. The UF groundwater remediation method could make site restoration more economically feasible. An example of the new methods efficiency was demonstrated in a pilot study at the Sages Dry Cleaner site in Jacksonville, FL. The estimated total cost of the Jacksonville demonstration for PCE source-zone removal was $440,000. Researchers predict at least a 50% reduction in the initial amount of ethanol needed if ethanol is recovered and reused. Based on the success of this project, the Florida Dry Cleaning Program is considering this innovative technology for full-scale application at the Sages site, and testing at other PCE-contaminated locations. I nnovative research conducted by a University of Florida (UF) faculty team offers an efficient and less costly approach to remediating contaminated groundwater. The traditional pump-and-treat method involves flushing with water to dissolve and extract pollutants. Because contaminants do not dissolve readily in water, this procedure requires using large quantities of water over several decades. Center for Natural Resources http://cnr.ifas.ufl.edu Mike Annable of the UF environmental engineering department taking groundwater samples to evaluate remediation efficiency at the Sages site. STUDY SITES CNR-11

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Center for Natural Resources 1051 McCarty Hall D PO Box 110230 Gainesville, FL 32611-0230 352-392-7622 622-7622 (suncom) 352-846-2856 (fax) cnr_mail@mail.ifas.ufl.edu (email) Innovations in Groundwater Remediation 4 M ike A nnable Dept.of Environmental Engineering Sciences University of Florida (352) 392-3294 annable@ufl.edu K irk H atfield Civil Engineering Dept. University of Florida (352) 392-0956 khatf@ce.ufl.edu W endy G raham Ag. & Biol. Engineering Dept. University of Florida (352) 392-1864 ext. 209 wgraham@ufl.edu S uresh R ao School of Civil Engineering, Purdue University West Lafayette, IN (765) 496-6554 pscr@purdue.edu FACULTY TEAM E nvironmental P rotection A gency N ational R isk M anagement R esearch L aboratory Ada, OK and Cincinnati, OH http://www.epa.gov/ORD/NRMRL U S A ir F orce A ir F orce R esearch L aboratory, Tyndall AFB, FL E nvironmental M anagement D irectorate, Hill AFB, UT N ational T est S ite, Dover AFB, DE L evine-F ricke-R econ, Tallahassee, FL C enter for N atural R esources (CNR) University of Florida http://cnr.ifas.ufl.edu F lorida C enter for S olid & H azardous W aste M anagement, University of Florida http://www.floridacenter.org/ F lorida D epartment of E nvironmental P rotection http://www.dep.state.fl.us/ S trategic E nvironmental R esearch & D evelopment P rogram (SERDP) http://www.nttc.edu/env/dod_serdp.html Sages Dry Cleaners in Jacksonville, Florida E PA H azardous W aste C leanU p I nformation http://www.clu-in.org/ R emediation T echnologies D evelopment F orum http://www.rtdf.org/ G round W ater R emediation T echnologies A nalysis C enter http://www.gwrtac.org/ PROJECT SUPPORTERS & COLLABORATORS OTHER WEB SITES Free phase PCE collected during in-situ flushing conducted at the Sages site