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Potential impacts of mining on the Rollins Sandstone are discussed on pages 19 -5 and 19 -5a of <br />the PHC. The hydrologic characteristics of the Rollins Sandstone were evaluated by Greystone <br />consultants and their report is contained in Volume 2, Appendix 7 -3 of the PAP. The Rollins <br />Sandstone lies 5 -22' below the Cameo B -seam. Greystone's conclusion was that since no <br />beneficial quantities of water are present in the Rollins Sandstone and an aquitard separates the <br />Rollins Sandstone from the Cameo B -seam, minimal effects on the quantity and quality of water <br />in the Rollins Sandstone are expected. Rollins 1 and Rollins 4 wells were both sealed in 2000 <br />when the underground portals were sealed. SCC presented graphical information for water <br />levels and water quality data for key constituents for the Rollins 2 and 3 wells. From the data <br />presented in the groundwater impact analysis, the Division concurs with SCC that the PHC <br />predictions are valid and that water levels and water quality of these wells has not been adversely <br />impacted due to activities associated with mining. Water levels remained very stable with little <br />fluctuation and water quality data show decreasing trends for most constituents. TDS remained <br />stable or showed a slightly decreasing trend in both wells, and pH slightly increased overall in <br />both Rollins Sandstone wells. <br />Reve eta ation <br />Areas were seeded for revegetation only in limited non - active use areas that were disturbed at the <br />UTL and conveyor corridor including, Topsoil Stockpile Number 4, UTL Ponds 1 and 2, and an <br />approximate 1 /2 acre site located outside of the rail loop where coal fines had accumulated. <br />These locations are described below. Topsoil was redistributed at reclaimed UTL Ponds 1 and <br />2. Coal fines were scraped up and removed from the small area outside the rail loop and from all <br />areas inside the UTL rail loop where they had accumulated. Topsoil Stockpile Number 4 has <br />been fully utilized and the area was regraded. At the former topsoil stockpile location and small <br />area outside of the rail loop the regraded surface was scarified to relieve compaction and provide <br />for root penetration. Both of these locations are flat with very little potential for erosion. All of <br />these disturbed non - active use locations were vegetated utilizing the approved seed mixture by <br />hydro seeding or broadcast seeding and certified weed free mulch was then applied. <br />Although Halliburton had requested that the vegetation requirements of Rule 4.15.10(2) be <br />waived due to ongoing construction projects, these isolated areas described above were all <br />successfully reseeded and mulched to further stabilize the areas and protect against future <br />erosion. See previous Photographs 9 and 10 for UTL Ponds 1 and 2, respectively. The location <br />of reclaimed Topsoil Stockpile Number 4 is shown in Photograph No. 15 and the small non- <br />active use area outside the rail loop is shown in Photograph No. 16. These photographs illustrate <br />that the areas have been adequately reclaimed and ground conditions remain stable. No evidence <br />of rills, gullies, or sheet wash erosion was observed at any of the non - active use areas and there <br />were no noxious plants observed on the reclaimed areas. <br />Reclamation Success <br />Nothing was identified during this inspection that would preclude full bond release for the <br />approximate 75.2 reclaimed acres located between the U.S. Government Highline Canal and the <br />Colorado River and lying north of I -9/10 Road, which was formerly used by the Roadside Portals <br />Mine for a Unit Train Loadout Facility, Permanent Flood Control Dike, Railroad Spur and <br />Page 13 <br />