(a) It shall be the sole responsibility of the Subdivider to determine the existence of surface or underground mining activities which may traverse, be adjacent to, or affect the area proposed to be subdivided. The determination of the existence of previous surface or underground mining activities shall be documented from the records of County, State, or Federal agencies or from other available information.
(b) Where the existence of previous surface or underground mining activities has been documented, the Subdivider shall be required to perform exploratory excavations or borings on each proposed lot within the subdivision in order to determine the extent of previous mining activities. Such exploratory excavations or borings shall be completed under the direction of a Engineering Geologist or Professional Engineer, who shall file a report with the Planning Commission certifying to each lots stability and suitability for development. Such report shall be detailed and include a description of the excavations or borings for each test site. The location of all exploratory excavations or borings shall be shown on the submitted Preliminary Plat.
(c) No land which has been previously surface mined or which has been subject to underground mining for which the documentation required herein indicates that the area may be unstable or unsuitable for development shall be platted for subdivision or building purposes unless adequate methods or safeguards are formulated by the Subdivider to prevent damage from such hazards.