WORK PLANS - Laserfiche WebLink

Home Browse Search

it i 30 January 2014 AGE Project No . 99-0682 Page 19 of 28 However, implementation of dual phase extraction would require installation of depth discrete wells for both the shallow and intermediate impacted zones , installation of an additional fixed system , installation of sub-surface infrastructure , procurement of discharge permits for waste discharge and exorbitant operational costs . Further, pilot testing has not been conducted proving that DPE is effective at the site , nor how many wells would need to be installed for effective operation of a DPE system . Overall , remediation of the remaining adsorbed and dissolved impact at the site by means of DPE appear to only be moderately feasible at this time . 11 .2 .3 . Duration Cleanup periods for dual phase extraction typically range from several months to several years. Based upon the plume size , and the general lithology beneath the site it appears that a 24- to 36-month period could be expected complete soil and groundwater remediation at the site. 11 . 2 .4 . Estimated Cost The costs for installation , operation and general maintenance of a DPE remediation system is dependant upon the particular system utilized for destruction of the extracted hydrocarbon vapors (thermal destruction , carbon adsorption , etc.) and the established cleanup goals . Generally, the installation cost fora dual phase extraction system will range between $75, 000 and $125, 000 . The approximate cost to operate , sustain , monitor and sample a DPE system could vary from $70 , 000 . 00 to $ 100 , 000 . 00 per year. 11 . 3 . IN-SITU CHEMICAL OXIDATION Advanced Oxidation Processes (AOP) refers to a set of treatment options used to remediate organic and inorganic wastes from water. In general , four common AOP's are used in industry to remediate hydrocarbons in soil and ground water: hydrogen peroxide , ozone , RegenOxTA° and Fenton 's Reagent. AOP are commonly used to remediate gasoline from underground fuel tank leaks and to treat waste water. The most predominant radical found in the reaction is the hydroxyl radical . The hydroxyl ion generally grabs hydrogen atoms from the organic molecules in contaminated waters and causes organic molecules to become unstable and eventually breakdown . The end product of these reactions is generally small amounts of mineral acid from halogens , nitrogen or sulfur present in soil in groundwater, bicarbonate and water. Advanced GeoEnvironmental, Inc.