Section 20.03.15.056 - WASTE PREVENTION, DRILLING AND PRODUCTION OBLIGATIONS01.Waste. All leases are subject to the condition that the Lessee will, in conducting his exploration, development and producing operations, use all reasonable precautions to prevent waste of geothermal resources and other natural resources found or developed in the leased lands.02.Diligence. The Lessee must, subject to the right to surrender the lease, diligently drill and produce, or unitize such wells as are necessary to protect the Board from loss by reason of production on other properties.03.Prevention of Waste Through Reinjection. Geothermal Lessees must return geothermal waters to the geothermal aquifer in a manner that supports geothermal development.04.Additional Requirements. The selection of the types and weights of drilling fluids and provisions for controlling fluid temperatures, blowout preventers and other surface control equipment and materials, casing and cementing programs, etc., to be used must be based on sound engineering principles and must take into account apparent geothermal gradients, depths and pressures of the various formations to be penetrated and other pertinent geologic and engineering data and information about the area. In addition, the Lessee must do the following: a. Take all necessary precautions to keep all wells under control at all times;b. Utilize trained and competent personnel;c. Utilize properly maintained equipment and materials; andd. Use operating practices that ensure the safety of life and property.05.Unused Wells. Except as provided in Subsection 070.02 of these rules, the Lessee must promptly plug and abandon any well on the leased land that is not used or useful in conformity with regulations promulgated by the IDWR or its successor agency. No production well will be abandoned until its lack of capacity for further profitable production of geothermal resources has been demonstrated to the satisfaction of the Department and the Department has been given an opportunity to either acquire the well permit or assign it to another party. A producible well may be abandoned only after receipt of written approval by the Department. Equipment will be removed, and premises at the well site will be restored as near as reasonably possible to its original condition immediately after plugging operations are completed on any well except as otherwise authorized by the Department. Drilling equipment must not be removed from any suspended drilling well without taking adequate measures to close the well and protect subsurface resources. Upon failure of Lessee to comply with any requirements under this rule, the Department is authorized to cause the work to be performed at the expense of the Lessee and the surety.Idaho Admin. Code r. 20.03.15.056