(1) Temporary Well Seals. Whenever there is a temporary interruption in work on the well during construction, repair, modification or abandonment, the well opening shall be sealed with a watertight cover. Except in areas designated by the District, any well in which pumping equipment is installed seasonally or periodically shall, whenever pumping equipment is not installed, be capped with a watertight cap or valve. The top of the well casing shall at a minimum extend one foot above land surface and, if practical, one foot above the 100-year flood elevation.
    (2) Permanent Well Seals. Wells shall be properly sealed to prevent the movement of contaminants and surface water into the well. The top of the well casing shall at a minimum extend one foot above land surface and, if practical, one foot above the 100-year flood elevation, for all wells except those outlined in Fl. Admin. Code Chapter 62-761 A flush mounted protective cover can be installed as an alternative to the one foot casing extension on surficial screened wells that are two inches or less in diameter. The flush mounted protective cover shall be constructed of one continuous piece of material resistant to deterioration and rusting. The flush mounted protective cover shall be fitted with a lid for easy access to the well point and a minimum dimension of 15 inches in length by ten inches in width by 13 inches in depth. When a flush mounted protective cover is used as an alternative in accordance with this section, the pipe connecting the well point must be continuous to the pump, and the cover must allow adequate drainage to prevent ponding or mounding of water inside the box.
    (3) Pumping equipment and any necessary pipe or electrical connections shall be installed to prevent inadvertent introduction of contaminants into the well, and if installed within the casing, shall be installed through a watertight seal.
    (4) The finished height of public supply wells shall be at a minimum 18 inches above finished grade, and, if practical, one foot above the 100-year flood elevation. The upper end of the well casing shall include a watertight seal with any vent located two feet above finished grade.
Rulemaking Authority 373.044, 373.171, 373.309, 373.337 FS. Law Implemented 373.306, 373.308, 373.309 FS. History-New 7-1-90, Amended 12-31-92, 2-8-99.