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
All wells deeper than 1500 feet and using Alternate I completion set a minimum surface casing of 100 feet in T.23S-R.20 and 21E and in T.21 and 22S-R.21E. In all other areas set a minimum of 125 feet. All other wells shall use Alternate II rules, Appendix B. R.17 and 18E use Area 3 rules and R.19, 20 and 21E use Area 2 rules, Eastern Surface Casing order. In all cases, set surface casing through all unconsolidated material plus 20 or more feet into the underlying formation.