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NASA Site Uses Advanced In-Situ Chemical Oxidation for Successful Subsurface Soil and Groundwater Remediation
Cleanup at Kennedy Space Center Uses RegenOx(TM) by Regenesis to Remove Petroleum Hydrocarbon Contaminants
| Source: Regenesis
SAN CLEMENTE, CA--(Marketwire - September 23, 2008) - E-Wire -- The National Aeronautics & Space
Administration's Kennedy Space Center in Cape Canaveral, FL, has undertaken
aggressive groundwater and soil remediation to treat an area of on-site
petroleum hydrocarbon contamination. Faced with the challenge of removing
the contamination while maintaining the integrity of underground utilities,
piping, and infrastructure, NASA and its consultant Tetra Tech chose
RegenOx™, a proven, non-corrosive, and cost-effective in-situ chemical
oxidation technology developed by Regenesis (San Clemente, CA).
The Launch Equipment Shop, part of NASA's famed Vehicle Assembly Building
complex, has conducted highly specialized manufacturing, fabrication, and
assembly work for the space program since the early 1960s. Leaks from a
4,000-gallon underground fuel oil tank, subsequently decommissioned and
removed, led to notable contamination of soil and groundwater, including a
layer of light non-aqueous phase liquid up to 15" thick, with total
recoverable petroleum hydrocarbon (TRPH) levels as high as 20,000 parts per
million (ppm) in soil and 42 ppm in groundwater.
The tank and 178 tons of readily accessible contaminated soil were
excavated and properly disposed of early on, but other, harder-to-reach
contaminated soils had to be left in place beneath and near building
foundations, where essential underground utilities were located. Although
Tetra Tech's engineering evaluation identified excavation as the preferred
approach for remediating the remaining contamination, the cost of
excavating the hard-to-reach soils was prohibitive, at over $1 million.
After examining alternative remediation technologies, in-situ chemical
oxidation (the application into the subsurface of highly reactive
chemicals, which chemically oxidize and destroy contaminants on contact)
was chosen as a more cost-effective means of site remediation. Most
conventional in-situ chemical oxidation chemistries were ruled out,
however, due to their corrosivity and tendency to generate intense heat
and/or explosive pressures.
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