Extractions from deposits of rock, stone, gravel, sand, earth, minerals, or building or construction materials shall not be construed to be a permitted use in any district established by this code unless a conditional use permit shall first have been obtained as provided in Article II Section 10.184, except for on-site improvement project. The Planning Commission shall have power to grant conditional use permits which are valid for a specified period of time, or are revocable, to permit extractions from deposits of rock, stone, gravel, sand, earth, minerals, or building or construction materials. It shall be clearly demonstrated by the applicant that odor, dust, noise, or drainage will not adversely impact adjacent properties.