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F. Additional Requirements for Destruction of Cathodic Protection Wells in Urban Areas. The <br /> following additional requirements shall be met at each well site in urban areas,unless otherwise <br /> approved by the enforcing agency: <br /> (1) The upper surface of the sealing material shall end at a depth of 5 feet below ground <br /> surface, and, <br /> (2) If the casing was not extracted during destruction and sealing operations,a hole shall <br /> be excavated around the well casing to a depth of 5 feet below ground surface after <br /> sealing operations have been completed and sealing materials have adequately set and <br /> cured. The exposed well casing shall then be removed by cutting the casing at the <br /> bottom of the excavation. The excavation shall then be backfilled with clean, native <br /> soil or other suitable material. <br /> G. Temporary Cover. The well borehole and any associated excavations shall be covered at the <br /> surface to prevent the entry of foreign material, water, pollutants, and contaminants and to <br /> ensure public safety whenever work on the well is interrupted by such events as overnight <br /> shutdown,poor weather,and required waiting periods to allow setting of sealing materials and <br /> performance of tests. The cover shall be held in place or weighted down in such a manner that <br /> it cannot be removed except by equipment or tools. <br /> -74- <br />