(1) fencing with locking gates;(2) locks on access manholes;(3) locks on wellheads and well houses; and(4) other necessary precautions to prevent vandalism, pilfering, trespass, and sabotage.
Okla. Admin. Code § 252:631-3-22
Added at 20 Ok Reg 61, eff 10-31-02 (emergency); Added at 20 Ok Reg 1153, eff 6-1-03