Laserfiche WebLink
13.15. WELL DEVELOPMENT <br /> 13.15.1. Monitoring well development, redevelopment, and conditioning shall be <br /> performed with care so as to prevent damage to the well and any strata <br /> surrounding the well that serve to restrict the movement of poor quality <br /> water. <br /> 13.15.2. Mechanical surging devices, such as "plungers", bailers, and surge <br /> blocks shall be operated in such a way as to prevent damage to the <br /> well, and without producing excess sediment. <br /> 13.15.3. The air or gas supply used in development operations shall be free of <br /> hydrocarbons, and other pollutants or contaminants. Air development <br /> and air jetting methods must obtain prior approval from the Director. <br /> 13.15.4. Water used in jetting operations shall be free of pollutants and <br /> contaminants. Water jetting development methods must obtain prior <br /> approval from the Director. <br /> 13.15.5. All equipment used for developing, sampling, and/or repairing of wells <br /> must be free of contamination and cleaned between the construction <br /> and/or sampling of wells to prevent cross contamination. <br /> 13.15.6. A minimum of 12 hours of time shall be allowed between placement of <br /> the annular seal and well development. <br /> 13.15.7. Development and purge water that is not permitted for discharge to land <br /> or sanitary sewer shall be containerized in properly secured and labeled <br /> DOT drums prior to disposal in accordance with all applicable federal, <br /> state and local requirements. <br /> 13.16. REHABILITATION AND REPAIR OF MONITORING WELLS <br /> 13.16.1 Rehabilitation methods should be compatible with the use of the <br /> monitoring well. Well rehabilitation methods which include surging by <br /> use of compressed air, backwashing or surging by alternately starting or <br /> stopping a pump, water jetting, sonic cleaning, or combinations of <br /> these, must obtain prior approval from the Director. <br /> 13.16.2 Materials used for repairing well casing shall meet the requirements of <br /> Section 13.8. <br /> 13.17. REQUIREMENTS FOR DESTROYING MONITORING WELLS AND <br /> EXPLORATION HOLES <br /> 13.17.1. A monitoring well shall be investigated to determine its condition and <br /> details or its construction prior to its destruction. <br /> 13.17.2. The well shall be sounded immediately before it is destroyed to <br /> determine whether there are obstructions that will interfere with filling <br /> and sealing. <br /> 13.17.3. Any obstructions found in the well or boring shall be removed before <br /> filling and sealing operations begin. <br /> EHD 43-03 Page 26 of 27 WELL STANDARDS <br /> 10/9/07 <br />