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and the Jack O ' Lantern. The Red Arrow seam ranges in thickness <br /> from 4 to 7 feet and is a moderate to high sulfur coal with 3 <br /> recognizable units separated by bony layers of ash. The Jack <br /> O' Lantern seam is a low sulfur coal that ranges in thickness from <br /> 4 to 8 feet and also consists of 3 recognizable units separated by <br /> boney ash layers . The permittee has provided a complete coal, roof <br /> and floor analysis in the permit. For further information refer to <br /> Section 2 . 04 . 6 of the permit . <br /> Ascending upward on the stratigraphic column from the Vermejo <br /> Formation is the Raton Formation, a unit consisting of two members- <br /> a basal sandstone and muddy-sandy layer. The Raton averages 650 <br /> feet in thickness . The erosional base of this unit marks the top <br /> of the Vermejo Formation in the Southfield mine area. There are no <br /> coal-bearing units found in the Raton, since its character <br /> indicates that a period of increased uplift and subsequent erosion <br /> in the area followed that of the depositional low-energy <br /> environment found in the Vermejo. <br /> Uncomfortably overlying the Raton Formation are the sediments of <br /> the Poison Canyon Formation. Similar in composition and character <br /> to the Raton, the Poison Canyon Formation is coal barren and is 200 <br /> feet in thickness of alternating beds of mudstone and sandstone. <br /> Covering most of the topographic ridges in the Southfield mine area <br /> are a series of Pleistocene boulder/colluvial/alluvial deposits . <br /> Most of the boulders consist of gneiss, schist and sandstones <br /> derived from erosion and mass wasting of the Wet Mountain uplift to <br /> the south and west . Depositional thicknesses range from 5 to 100 <br /> feet in places near the mine site, with 20 feet recorded in the <br /> loadout area of the mine. <br /> Hydrology <br /> An extensive review of both the ground water and surface water <br /> hydrology can be found in Section 2 . 04 . 7 , 2 . 05 . 6 and 4 . 05 of the <br /> permit application. Below is a brief summary of the ground and <br /> surface water issues at the Southfield Mine. Further information <br /> on these items can be found in the "Probable Hydrologic <br /> Consequences" Section B of this findings document . <br /> Ground Water <br /> Southfield Mine Permit Renewal 03 <br /> 18 <br />