Section 69-05.2-09-14 - Permit applications - Reclamation plans - Disposal of initial pit spoil and other excess spoil1. Each application must contain descriptions, maps, and cross-section drawings of the disposal site and spoil disposal area design according to chapter 69-05.2-18. These plans must describe the geotechnical investigation, design, construction, operation, maintenance, and removal, if appropriate, of the site and structures. 2. Each application must contain the results of a geotechnical investigation of the disposal site including: a. The character of bedrock and any adverse geologic conditions in the disposal area. b. Springs, seepage, and ground water flow observed or anticipated in the disposal site during wet periods. c. The potential effects of subsidence of the subsurface strata due to past and future mining operations. d. A stability analysis including strength parameters, pore pressures, and long-term seepage conditions, and a description of all engineering design assumptions, calculations and alternatives considered in selecting the design specifications and methods. The commission may waive the stability analysis after analyzing the results of the geotechnical investigation if: (1) No adverse geologic conditions exist in the disposal area. (2) There are no springs, and there is no seepage or ground water flow in the disposal site area. (3) There is no potential for subsidence of subsurface strata due to past and future mining operations. (4) The slope of the disposal area does not exceed twenty percent. N.D. Admin Code 69-05.2-09-14
Effective August 1, 1980; amended effective May 1, 1990.General Authority: NDCC 38-14.1-03
Law Implemented: NDCC 38-14.1-14