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9. The information on the two groundwater monitoring wells is unclear. Please clarify <br />if the elevation at the top of TP-W1 is 5,773 feet and that it is 201 feet deep. <br />Please indicate the top-of-casing height, ground level elevation, depth to the bottom <br />of the mine, casing type and casing diameter of the Caldirola Well. Review of <br />information on the map entitled "Hydrology, Caldirola No. 2 Mine" leaves some <br />question as to which of the two Coal Creek wells is being monitored. Please clarify <br />this situation. <br />Operations Description. Mine Facilities. Coal Handlino Structures, Coal Processing Waste <br />and Suooort Facilities -Rules 2.05.2 2.05.3(11 2.05.3(2). 2.05.3(31, 2.05.3(7). 4.01, <br />and 4.04 <br />10. Division comparison of Map TP-2 and the August 1992, revision of the Mine Map <br />suggests that Twin Pines Limited Partnership mined outside of the permit area in <br />the area known as 2nd East. Please submit a current Mine Map showing the permit <br />area boundaries per Rule 2.10.1(21, and address the Division's observation. If Twin <br />Pines Limited Partnership mined outside the permit area, please document the areal <br />extent of unpermitted mining, the amount of coal acquired and the duration of <br />mining in the area. <br />1 1. The sediment pond, office trailer and scale at the tipple appear to be within 100 <br />feet of County Road 86. The topsoil piles and the Lewis Gulch sediment pond also <br />appear to be within 100 feet of the outside right-of-way line of the offshoot of <br />County Road 77. Please obtain the appropriate Fremont County approvals per <br />2.07.6(2)(d)(iv). <br />12. Operations information on the Sales area appears to be limited. Describe the <br />structures and their functions at the Sales Office to show compliance with <br />2.05.3(3)(a). Please provide the following information or reference the location in <br />the permit application of the following items: <br />a. Dimensions of the tipple and associated foundations (Rule 2.05.4); <br />b. Dimensions of the shop building (Rule 2.05.4); <br />c. Dimensions of the office trailer (Rule 2.05.41; and <br />d. Discussion of the tipple access road and the Sales Office main access <br />road on page 73, documenting responses to 2.05.3(31(cl. <br />13. The Twin Pines Coal Sales Map shows two permit boundaries. Please identify the <br />approved delineation on the map per Rule 2.10(3). <br />Roads -Rules 2.05.3(3) and 4.03 <br />14. Document the grade of the cut slope above the upper portion of the tipple access <br />road. Submit a geotechnical analysis showing that the cut slope is stable as <br />required per 4.03.2(3)(c). <br />15. The Sales Area access road, the upper tipple access road, and the mine site access <br />road should be classified as haul roads rather than access roads, given their existing <br />Twin Pines Mid-Term Review 3 January 13, 1993 <br />