Okla. Stat. tit. 45, § 45-765

A. The Department shall require any permittee to establish and

maintain appropriate records, make monthly reports to the

Department, install, use and maintain any necessary monitoring

equipment or methods, evaluate results in accordance with such

methods, at such locations, intervals and in such manner as the

Department shall prescribe, and provide such other information

relative to surface coal mining and reclamation operations as the

Department deems reasonable and necessary.

B. For those surface coal mining and reclamation operations

which remove or disturb strata that serve as aquifers which

significantly insure the hydrologic balance of water use either on

or off the mining site, the Department shall specify:

1. Monitoring sites to record the quantity and quality of

surface drainage above and below the minesite as well as in the

potential zone of influence;

2. Monitoring sites to record level, amount and samples of

ground water and aquifers potentially affected by the mining and

also directly below the lowermost (deepest) coal seam to be mined;

3. Records of well logs and borehole data to be maintained; and

4. Monitoring sites to record precipitation.

The monitoring data collection and analysis required by this

section shall be conducted according to standards and procedures set

forth by the Department in order to assure their reliability and

validity.