Laserfiche WebLink
r <br /> 41 <br /> GOLDEN GRAIN coMPANY <br /> December 23 , <br /> 202/799-5045.06 <br /> on-site Treatment Disadvantages: <br /> 1. Requires construction of engineered treatment cells <br /> 2• Requires a large area to construct treatment cells. <br /> 3. May require expensive vapor-abatement system. <br /> 4• operation is labor intensive. <br /> The small amount of space available at the northern and <br /> southern ends of the property may preclude effective treatment of <br /> p y 1 excavation options <br /> significant amounts of soil. Accordingly <br /> should be ruled out at this sitein <br /> favortreatmentofailor ex <br /> grountaction, <br /> dwater extraction, and in p <br /> 5.4 VApoR EXTRACTION <br /> soil. venting) involves the <br /> vapor extraction (also known as <br /> installation of vapor-extraction wells within the vadose zone. <br /> i The wells are :nanifolded together and attached to a high-vacuum <br /> blower. By extracting vapors from the subsurface, hydrocarbon <br /> vapors are directly removed; hydrocarbons sorbed to soil <br /> This <br /> particles are also volatilized hereand or, if.requireapor is then <br /> htreatedvia <br /> either discharged to the atmosp <br /> incineration prior to discharge, <br /> carbon adsorption or catalytic in <br /> be an effective treatment for hydrocarbons in <br /> soil venting may stud would <br /> the vadose. lone at the site; however, a feasibility y <br /> need to be conducted prior to installation. <br /> Thist�eansure�that <br /> study would provide design information necessaextraction <br /> the entire affected area is addressed by a vapor <br /> system. <br /> ' GROUNDWATER---- <br /> TECHNOLOGY.INC. <br />