California Code of Regulations
Title 14 - Natural Resources
Division 2 - Department of Conservation
Chapter 4 - Development, Regulation, and Conservation of Oil and Gas Resources
Subchapter 4 - State-Wide Geothermal Regulations
Article 3 - Drilling
Section 1931.5 - Unstable Terrain

If the construction of drilling sites, roads, sumps, steam transmission lines, and other construction attendant to geothermal operations could cause or could be affected by slumping, landslides, or unstable earth conditions, the Supervisor shall require that the operator submit a written analysis of the proposed work prior to the commencement of any construction and prior to approving a permit to drill. At the request of the Supervisor, the report shall be prepared by a civil engineer, licensed in the state and experienced in soils engineering; and if slumping or landsliding could be involved, the requested report shall also be prepared by an engineering geologist, certified in the state and experienced in slope stability and related problems. No permit to drill shall be approved unless the report indicates that the work is planned in such a manner as to reasonably mitigate the problem throughout the life of the project.

Upon completion of any construction authorized by the Supervisor pursuant to this section, the operator shall certify in writing to the Supervisor that the work was carried out according to the approved plans subject only to changes approved by the Supervisor.

1. Amendment filed 4-13-76; effective thirtieth day thereafter (Register 76, No. 16).
2. Change without regulatory effect amending section filed 12-26-2006 pursuant to section 100, title 1, California Code of Regulations (Register 2006, No. 52).