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• Introducing specifically-formulated chemicals into a well; and, <br /> • Combinations of the above. <br /> Hydraulic fracturing (hydrofracturing) is sometimes an acceptable well development and redevelopment <br /> method when properly performed. Good quality water shall be used in hydrofracturing. The water shall be <br /> disinfected prior to introduction into a well. Material used as'propping'agents shall be free of pollutants and <br /> contaminants,shall be compatible with the use of a well,and shall be thoroughly washed and disinfected prior <br /> to placement in a well. <br /> Development,redevelopment,or reconditioning by use of specially designed explosive charges is in some cases, <br /> another acceptable development method. Explosives shall be used with special care to prevent damage to the <br /> well structure and to any natural barriers to the movement of poor-quality water,pollutants,and contaminants. <br /> Explosives shall only be used by properly-trained personnel. <br /> i <br /> Wells subjected to chemicals or explosives during development,redevelopment,or reconditioning operations <br /> shall be thoroughly pumped to remove such agents and residues immediately after the completion of <br /> operations. Chemicals,water,and other wastes removed from the well shall be disposed of in accordance with <br /> applicable local, State, and federal requirements. The enforcing agency should be contacted regarding the <br /> proper disposal of waste." <br /> -27- <br />