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i 13 March 2012 AGE-NC Project No. 99-0682 Page 2 of 5 should also accelerate the "stripping" of the adsorbed contaminants from surrounding soils and dissolve them into ground water where they are more likely to be effectively treated. Further, AGE has reviewed a similarly conducted bench-scale pilot study performed by Prima Environmental of Sacramento, California at a site in Davis California (712 G Street, Davis, California; Appendix B) . The bench scale test evaluated mixtures of hydrogen peroxide, hydrogen peroxide with acid (as proposed) and hydrogen peroxide with chelated iron. Based on an evaluation of the results, it appears to AGE that the application solution that was most effective at destroying the highest percentage of contaminants of concern, without vigorous reactions was a dilute solution of peroxide (2916) and acid (see Table 5 in Appendix B) , 2 . If Fenton's Reagent is to be used , please provide detailed information on the application rates and concentrations. The Guidance notes that the two reagents , hydrogen peroxide and iron catalyst must be injected separately, either sequentially or concurrently, so they may mix at the end of the well or borehole . As stated above, AGE has proposed a modified Fenton 's system and not Fenton 's \ Reagent, Yi . Provide process and calculations used to determine the concentration and amount of te proposed reactants that will be needed for the pilot test. The stoichiometric demand of the contaminant mass targeted for treatment and the oxidant demand of the 'natural conditions must be factored in to this. Baseline iron content in the groundwater should also be taken into consideration to determine the dosing requirement. As proposed in the October 2011 feasibility study work plan, a 5% solution of hydrogen peroxide will be prepared on-site utilizing a graduated 55-gallon drum and water from an on-site source. The drum will be filled with approximately 35 gallons of clean tap water. Once the appropriate volume of water has been placed in the drum, approximately 5 gallons of 35% industrial grade hydrogen peroxide will be added to the water to create the 5% mixture of hydrogen peroxide. Additionally, 1 liter of 50 mole hydrochloric (muriatic) acid will be added to the mixture. This mixture will then be pumped from the 55-gallon drum into the wells. The wells will be fitted with a threaded reducing collar to accommodate a sealed connection, under pressure. This procedure will be repeated a total of ten times for each well or until the subsurface refuses to accept the media within an six hour time frame. At the conclusion of each Advanced CeoEnvironmental, Inc.