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composition of the coal. Alluvial ground water monitoring was conducted <br /> utilizing wells installed prior to 1993 by the previous operator, HG Coal <br /> Company. Well HGDALI was completed in the alluvium up gradient of the <br /> Loadout and well HGDAL2 was located down gradient of the Loadout. <br /> Based on concerns by the Division that wells HGDALI and HGDAL2 may <br /> have been completed in the Lewis shale rather than the Dry Creek alluvium, <br /> two addition wells were constructed. In October of 1993,the HGDAL3 well <br /> was constructed down gradient from the rail loop to assure that potential <br /> ground water impacts from the Loadout could be assessed and in November <br /> of 2005,while well HGDAL4 was completed up gradient from the Loadout. <br /> Wells HGDALI and HGDAL2 were sealed in September of 2007 in <br /> accordance with Rule 4.07.3(3). <br /> The Lewis shale is an aquitard and should not be significantly affected by <br /> any additional waters that might contribute to the site as a result of operations <br /> at the Loadout. Water used at the site is drawn from the Yampa River <br /> alluvium. It is conceivable that waters seeping from sediment ponds and <br /> from the operations leach field may contribute additional water to Dry <br /> Creek's alluvium, but is not expected to be significant. <br /> Pursuant to Rule 2.07.6(2)(c),the assessment of the probable consequences <br /> of the proposed mining operation and the assessment of the probable <br /> cumulative impact of all anticipated mining in the area on the hydrologic <br /> balance, as described in Rule 2.05.6(3),have been made. The proposed <br /> operation has been found to be designed to prevent material damage to the <br /> hydrologic balance outside the permit area. <br /> IV. Topsoil <br /> Information regarding soil resources and salvage may be found in Tab 9, Tab 17, Tab <br /> 19, Attachments 9-1, 9-2, 9-3, 9-4, and Exhibits 9-1 and 9-2 of the PAP. <br /> A. The Loadout and railroad spur were constructed from 1977 to 1979. These <br /> facilities were previously permitted under Permit No. C-80-003. Topsoil was <br /> stripped from the facilities site,railroad spur, and railroad loop, and stockpiled. <br /> All suitable A horizon topsoil and some upper B horizon subsoil material was <br /> salvaged. <br /> Existing topsoil stockpiles were inventoried in November 1992 to confirm <br /> volumes and suitability of stockpile material. Results of this inventory are located <br /> in Attachment 9-1 of the PAP. Approximately 55,100 cubic yards of soil material <br /> have been stockpiled. Analyses of the stockpiled material indicate elevated SAR <br /> and increased salinity levels at lower depths of topsoil piles 91 and 93. Due to <br /> these factors, somewhat less than the 55,100 cubic yards of the stockpiles topsoil <br /> material will be redistributed on disturbed areas during reclamation of the <br /> facilities area. This volume will allow for replacement depths of 6 to 9 inches <br /> 23 <br />