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Kerfoot 1'echnologies Fiequently Asked Questions Page i of 3 <br /> C3NJR= r.0NTA CrkQ § <br /> Frequently Asked Questions <br /> What is the C-Sparger® System? <br /> The C-Sparger@ is a patented innovative oxidation remediation technology, including process and <br /> equipment <br /> How does the C-Sparger® Work's <br /> The C-Sparger releases microbubbles of encapsulated ozone that are injected directly into the <br /> groundwater The microbubbles are randomly dispersed through the water and the saturated soil <br /> formation The process combines stripping and treatment, targeting both soil and groundwater <br /> compartments The encapsulated ozone reacts with contaminants (hydrocarbon and chlorinated solvents), <br /> producing harmless by-products <br /> What are the advantages of using the C-Sparger® System? <br /> Site clean-up time may be at least 3 to 4 times faster and cost 50% to 75% less than other pump and <br /> 16t e t methods <br /> Does the injection of ozone constitute injection of hazardous waste? <br /> The infection of low-level ozone into the groundwater does not constitute an injection of hazardous <br /> material because of the following <br /> o The infection occurs beneath the groundwater surface and 3s adjusted to zero concentration in the vadose <br /> zone (area above groundwater) <br /> o The injection concentration is low (80 to 350 ppmv) <br /> • The infection quantity is low (less than 1 Ib/day or 400 gm/day with use of the wall-mount unit) <br /> • There is no respiratory risk to a person on the surface Both DOD and EISA monitoring of groundwater <br /> infection has confirmed no ozone in gas recovery wells (vacuum extraction wells) placed above the water <br /> table during proper operations <br /> What are the breakdown products? <br /> The following are the first-order laboratory-isolated breakdown products <br /> • Aliphatics (alkanes) acetate, butyrate, formate, propionate <br /> • BTEX carboxylic acids <br /> • Oxygenates <br /> • MTBE TBA (tertiary butyl alcohol), TBF (tertiary butyl Formate), formate, oxygen, hydrogen peroxide <br /> • ETBE TBA (tertiary butyl alcohol), TBF (tertiary butyl formate), acetate, oxygen, hydrogen peroxide <br /> TBA formaldehyde, acetate, carbon dioxide, water <br /> http //www kva-equipment com/doc php?12,0,28806,ker28806,,,Index 11/10/2004 <br />