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31 October 2011 AGE-NC Project No. 99-0682 Page 9 of 9 equipment decontamination are outlined below. 5.1. ISCO SOLUTION PREPARATION AND INJECTION PROCEDURE A 5% solution of hydrogen peroxide will be prepared on-site utilizing a DOT 55-gallon drum and water from an on-site source. The drum will be filled with approximately 35 gallons of clean tap water, which will be metered by a Sensus flow meter. 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 gravity fed from the 55-gallon drum into the wells. This procedure will be repeated a total of ten times for both wells MW-1A and MW-8; at the conclusion of full application, a minimum 100 gallons of 35% hydrogen peroxide will have been mixed with 700 gallons of water creating a 5% mixture above ground. Within Fe aquifer it is suspected an equal volume of water (350 gallons) will be treated. The treatment volume of water combined with the created above ground solution, should form a dilute solution of hydrogen peroxide/muriatic acid. 5.2. PROGRESS/CONFIRMATION/COMPLIANCE MONITORING AND SAMPLING Performance of progress/confirmation sampling will be completed once following the second injection event and once following completion of the fourth and final injection event. Progress/confirmation testing will be performed by an OSHA 40-hour certified AGE representative. Monitoring and sampling will be performed in accordance with AGE's standard monitoring and sampling procedures (Appendix C). Field parameters and laboratory samples will be collected from wells MW-1 A, MW-6, MW-7 and MW-8 and will be monitored and tested for the constituents and parameters listed in Section 4.1. 5.3. EQUIPMENT DECONTAMINATION Upon completion of each injection event all equipment will be rinsed and removed of any oxidant or acid material. All rinseate accumulated during the injection activity will be stored on-site in an approved DOT container prior to its removal and disposal. Advanced CeoEnvironmental,Inc.