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0.V <br />projections, and split seafn areas not presently considered recoverable will reduce ove~recovery to <br />. approximately 50 Pf the minable in place coal. <br />2.1.6 Subsidence <br />The existing and projected development entries have been designed for use as primary access <br />throughout projected life of mine. For this reason, care has been taken to design an entry <br />configuration which will provide long-term stability. Present development entry design allows 60% <br />of the area to remain in place as pillars. Convergence data and observation of rib stability to date <br />have shown no abnormal movement in the mine. The existing and projected entries addressed in <br />this permit term (5 years) are development only, with no secondary mining methods proposed. This <br />will eliminate the possibility of subsidence; therefore, no subsidence monitoring is being planned for <br />this permit term. <br />Also, no structures or renewable resource lands exist within the proposed permit and adjacent <br />areas as can be clearly seen in the evaluation of information contained in this application and <br />supporting data. The definition of "renewable resource lands" as contained in 30 CFR 701.5 was <br />applied in this inventory; this includes the fact that there is no aquifer above the coal seams to be <br />mined. <br />2.1.7 Protection of Other Resources <br />No known resources such as oil, gas or other minerals exist on the portion of the Permit Area <br />planned for mining or within the mine plan area as shown on Figures 2.1-4 and 2.1-5. The Douglas <br />Pass area contains two known oil and gas containing geologic structures, or producing oil and gas <br />areas, the Coal Gulch and South Canyon Fields. There is no indication of structural traps in the area <br />of this proposed operation. <br />The permit area is included in the Mesa-Gar Federal Oil and Gas Unit. This unit calls for a <br />multiple well program to explore for stratigraphically controlled Dakota sandstone gas production. <br />A well drilled in 1974, three miles north of the Permit Area recovered water from the Dakota and <br />was abandoned at a total depth of 5,545 feet in the Entrada formation. This well is the C and W <br />Drilling Co., #1 Hitchborn Livestock NE SE Section 9, T7S, R102W. The Mesa-Gar Unit #lA Well <br />drilled 1253 FSL 2120 FEL, Section 30, T7S, R ] Ol W was abandoned after drilling into the Dakota <br />at 5,175 feet. This well is two and one-half miles east of the Permit Are. <br />Two other dry holes were drilled and tested through the Dakota formation in 1980. They are the <br />. Mesa-Gar Federal 28-1 and the Ed Young 6-4. The Mesa-Gar Federal 28-1 is located 2346 FWL <br />2429 FSL, Section 28, T7S, R102W, and was drilled•to~3,057'. The Ed Young 6-4 located 1956 FSL <br />M~ Page 2. I - 7 10-12-00 <br />