Minimum Surface Casing Requirements
Minimum surface casing requirements for protecting fresh and usable water and to meet alternate #1 on Intent to Drill cards, Form C-1
S=Section, T=Township, R=Range
Set 20 feet into the Jurassic or Permian. The following options are open: (a) set 20 feet into the Triassic or Permian or (b) set through all unconsolidated material plus 20 feet into the underlying formation, and cement the production string from a point 20 feet below the top of the uppermost Triassic or Permian unit present to the surface, and in no case shall this be less than 350 feet below the surface. If (b) is used and the hole is dry, the hole shall be filled with cement from a point 20 feet below the top of the uppermost Jurassic or Permian unit to the surface. In all cases, set through all unconsolidated material plus 20 feet into the underlying formation.