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At gob pile #3 it is necessary to stockpile gob material during the winter months then place <br />and compact the stockpiled gob when weather allows. Stockpiling of gob can commence <br />November 15 and end April 15. Winter stockpiled material will be re- handled and <br />compacted by September 30. Beginning on October 1, the Operator should be compacting <br />all material concurrently, until conditions again require stockpiling. The stockpiling dates <br />listed above should be considered flexible and may change slightly from year to year based <br />on weather conditions. The gob material will be stockpiled in rows generally running from <br />northwest to southeast.. The rows of gob will be placed in a controlled manner and overlap <br />will be minimized so there is space between rows to allow for drainage to the southeast. <br />There were rows of stockpiled gob at gob pile #3 during the inspection. <br />Gob pile #2 has two steep areas. One is south of the employee parking area. The slope is <br />0.5 to 0.8H:1 V. This area will be reworked when weather permits. The second is located in <br />the central section of the pile. This area is steep because the Operator was placing gob in <br />the area and was tying the gob into existing gob and natural ground. There is a steep slope <br />on the west side of the first bench on gob pile #1. The slope is about 1.5H:1 V and the <br />approved slope is 2H:1 V. This steep slope has remained stable for years and has not shown <br />any signs of instability. <br />The available volume of coverfill material is sufficient to meet the requirements of Rule <br />4.10.4(5). No coverfill was used for blending or other uses during the quarter. Subsoil <br />excavation is currently underway in the west coverfill stockpile footprint. A small quantity <br />from the west coverfill stockpile at gob pile #3 was excavated and re- stockpiled in the east <br />coverfill stockpile. Subsoil was hauled back to gob pile #2 and the second bench west of the <br />haul road is nearly covered. Approximately 35,000 CY of coverfill was generated during the <br />quarter. <br />A failure of the gob pile no. 1 would probably not be a hazard to human life. The pile is <br />located above a large flat bench. The bench is approximately 80 to 150 -feet wide directly <br />below the pile. Additionally, the gob pile sediment pond is located below the pile. If the coal <br />mine waste bank failed, the material would very likely be contained on the bench below the <br />pile and or within the gob pile sediment pond. <br />A failure of the gob piles no. 2 and 4 would probably not be a hazard to human life. A <br />residential dwelling is located over 300 -feet below pile no. 2. The piles are located above <br />Bowie Road. A failure of the piles might damage Bowie Road and the Fire Mountain Canal <br />but would not likely impact the residential dwelling. <br />A failure of gob pile no. 3 would not be a hazard to human life. A failure of the pile might <br />damage the rail track below the pile. <br />certify hat to the best of m knowledge and belief, that the fill and ' <br />y y g , �'t��l' �.�f the coal <br />mine waste banks have been constructed as permitted in the desoc ro�t#r DRMS. <br />Lai— <br />James E. St A <br />Colorado PrN)j) Engineer- ;'�°'V <br />Registration �,. - ,;�; ;+ <br />-2- lVA °�s <br />