Laserfiche WebLink
2.04.6 Geology Description <br />,~ (1) Surface Mining <br />(a) The description shall include a general statement of the geology <br />(stratigraphy and structure) within the proposed area to be <br />affected over the life of the operation down to and including the <br />first aquifer and other coal seams, if any, below the lowest coal <br />seam to be mined. A geologic map with geologic cross-sections <br />of the permit area, prepared in accordance with 2.10, should <br />accompany the descriptions and include the following: <br />(i) Nature, depth, and thickness of the coal seams to be <br />mined, any coal or rider seams above the seam to be mined, <br />each stratum of the overburden, and the stratum immedi- <br />ately below the lowest coal seam to be mined; <br />(ii) The proposed permit area, including coal crop lines and the <br />strike and dip of the coal to be mined; <br />(b) (i) Test borings or core samples from the proposed permit <br />area shall be collected and analyzed down to and including <br />the stratum immediately below the lowest coal seam to be <br />mined in order to provide the following data in the <br />description: <br />(A) Location of subsurface water zones, if encountered; <br />• (B) Logs of drill holes showing the lithologic character- <br />istics and thickness of each stratum and each coal <br />seam; <br />(C) Physical properities of each stratum within the over- <br />burden including texture, overall swell, and other <br />information sufficient to determine compactability, <br />erodibility and overall estimate of overburden and <br />interburden swell. <br />(D) Chemical analysis of each stratum within the over- <br />burden and interburden and the stratum immediately <br />below the lowest coal seam to be mined to identify, at <br />a minimum, those horizons which contain potential acid- <br />forming, toxic-forming, or alkalinity producing ma- <br />terials; and <br />(E) Analyses of the coal seam, including, but not limited <br />to, an analysis of the sulfur, pyrite, and marcasite <br />content. <br />(ii) Borehole spacing and physical and chemical analyses of core <br />samples shall be determined in consultation with the <br />Division. <br />~, (iii) If required by the Division, test borings or core samplings <br />shall be collected and analyzed to greater depths within the <br />proposed permit area, or for areas outside the proposed <br />