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
With the exception of the special area listed below, wells deeper than 1500 feet and using Alternate I completion set a minimum of 250 feet surface casing. All other wells shall use Alternate II rules, Appendix B, Area 3, Eastern Surface Casing order. In all cases, set surface casing through all unconsolidated material plus 20 or more feet into the underlying formation. Within Section 31, T.1S, R.15E and Sections 6, 7, 18 and 19 of T.2S, R.15E, extra pipe is required. An initial larger surface pipe of a minimum of 60 feet depth and a minimum of 20 feet into bedrock is required. Then intermediate pipe must satisfy the normal surface pipe requirements as listed above.