Florida Regulations 40D-3.507: Casing and Liner Pipe Standards
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(1) Well casing installed by driving shall not have less than the dimensions and weights specified in subsection 62-532.500(1), F.A.C.
(2) Well casing or liner pipe set into place without driving shall not have less than the dimensions and weights specified by subsection 62-532.500(1), F.A.C.
(3) Telescoped casings may be used provided that casings of different diameters are joined with an appropriate overlap and any annular space including the overlapped section shall be grouted in accordance with subsection 62-532.500(3), F.A.C. (2-16-12) incorporated by reference in subsection 40D-3.037(1), F.A.C. To prevent interchanges of water when multiple aquifers or zones are penetrated, grout shall extend from the bottom of the casing to the top of the innermost casing. The use of lead packers for this purpose is prohibited.
(a) A minimum overlap of ten feet and one casing centralizer in the overlapping section shall be required for non-public supply wells which are less than six inches in diameter.
(b) A minimum overlap of 20 feet and two casing centralizers in the overlapping section shall be required for public supply wells and all wells six inches or more in diameter.
(4) When any part of a well casing with an outside diameter of four inches or larger is intended to be installed in a bore hole which is larger in diameter than the inside diameter of the casing, the annular space shall be filled from bottom to top with not less than a nominal two inch thickness of neat cement grout. For those well casings with an outside diameter of less than four inches, the minimum grout thickness shall be a nominal one inch.
(5) Liners may be used in a well provided that cross-connection of aquifers of significantly differing water quality does not occur. Liners installed within a casing shall meet the grouting and sealing requirements of subsection (4), above. Liners installed for the purpose of sealing off caving material in an open borehole are not required to be grouted. A liner installed for the purpose of repairing a well may be overlapped into an existing casing provided it is joined with an appropriate overlap and a watertight seal and provided that loss of artesian pressure or cross connection of aquifers of significantly differing water quality does not occur.
Rulemaking Authority 373.044, 373.113, 373.171, 373.309, 373.337 FS. Law Implemented 373.306, 373.308, 373.309 FS. History-New 7-1-90, Amended 9-30-91, 12-31-92, 2-19-04, 7-12-15.
(3) Telescoped casings may be used provided that casings of different diameters are joined with an appropriate overlap and any annular space including the overlapped section shall be grouted in accordance with subsection 62-532.500(3), F.A.C. (2-16-12) incorporated by reference in subsection 40D-3.037(1), F.A.C. To prevent interchanges of water when multiple aquifers or zones are penetrated, grout shall extend from the bottom of the casing to the top of the innermost casing. The use of lead packers for this purpose is prohibited.
(a) A minimum overlap of ten feet and one casing centralizer in the overlapping section shall be required for non-public supply wells which are less than six inches in diameter.
(b) A minimum overlap of 20 feet and two casing centralizers in the overlapping section shall be required for public supply wells and all wells six inches or more in diameter.
(4) When any part of a well casing with an outside diameter of four inches or larger is intended to be installed in a bore hole which is larger in diameter than the inside diameter of the casing, the annular space shall be filled from bottom to top with not less than a nominal two inch thickness of neat cement grout. For those well casings with an outside diameter of less than four inches, the minimum grout thickness shall be a nominal one inch.
(5) Liners may be used in a well provided that cross-connection of aquifers of significantly differing water quality does not occur. Liners installed within a casing shall meet the grouting and sealing requirements of subsection (4), above. Liners installed for the purpose of sealing off caving material in an open borehole are not required to be grouted. A liner installed for the purpose of repairing a well may be overlapped into an existing casing provided it is joined with an appropriate overlap and a watertight seal and provided that loss of artesian pressure or cross connection of aquifers of significantly differing water quality does not occur.
Rulemaking Authority 373.044, 373.113, 373.171, 373.309, 373.337 FS. Law Implemented 373.306, 373.308, 373.309 FS. History-New 7-1-90, Amended 9-30-91, 12-31-92, 2-19-04, 7-12-15.