Section 144-232-4-403.0 - STANDARD PRACTICE FOR CONSTRUCTION OF WELLS DRILLED IN UNCONSOLIDATED MATERIALS403.1General: This section refers to wells commonly known as gravel wells and are constructed by drilling or washing into unconsolidated materials.403.2Casing Materials: Well casing materials. Refer to 401.1.403.3Extension above ground: Well casing shall extend above the ground surface a minimum of eight inches. In areas prone to flooding, additional height, or a vented watertight cap may be required to prevent entrance of surface water. (see 406.0)403.4Well casing covers: Well casings shall have a cover to prevent the entrance of foreign matter into the well.403.5Termination of the bottom of the casing: The bottom of the well casing shall be terminated in a manner appropriate for the conditions present and the uses of the well. Acceptable treatments include but shall not be limited to: 403.5.4Perforated casings403.6Adequate quantity of water: Drilled or washed wells, constructed for household use, shall not be terminated in unconsolidated materials unless an adequate quantity of water free from fine soil particles can be withdrawn.403.7Method and duration of development: The contractor shall develop the well by using appropriate methods of his or her choice until such time as the well produces water substantially free from fine soil particles.10-144 C.M.R. ch. 232, § 4-403.0