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Exhibit 7 <br /> Hydrology Information <br /> Volume 213 <br /> 1) Ground Water Quality Colowyo Coal Mine, Leonard Rice Consulting Water Engineers, <br /> Inc., 1979 <br /> 6) Hydrologic and Erosional Characteristics of Regraded Surface Coal Mined Land in <br /> Colorado, Striffler and Rhodes, 1981 <br /> 7) Modification of both Surface Water Monitoring and Alluvial Groundwater Monitoring <br /> Locations, 1991 <br /> 8) Geotechnical Assessment East Taylor Pond, CTL/Thompson, Inc. 1995 <br /> 9) Haulroad Culvert Redesign, 1997 <br /> 10) Stoker Crusher Ditch, 1997 <br /> 12) Section 16 Taylor Ditch, 1997 <br /> 14) Lower Administration Building Small Area Exemption <br /> 15) Haul Road A Upper and Lower Ditches <br /> Volume 2C <br /> 14) Emergency Spillway, Temporary and Permanent Channel Designs, Existing Structures <br /> Summary Text <br /> Appendix Exh. 7-14A Emergency Spillway Outslope Channel Designs <br /> Appendix Exh. 7-14B Side Channel Designs (Temporary) <br /> Appendix Exh. 7-14E Streeter Gulch and Buckskin Draw Ditches (Permanent) <br /> Appendix Exh. 7-14F Coal Road Ditch <br /> Appendix Exh. 7-14P Small Area Exemption <br /> Appendix Exh. 7-14REast Pit Reclamation Area, Prospect Ditch,North Trib East Pit <br /> Ditch, Final East Pit Ditch <br /> 15) Stability Evaluation, Existing Sedimentation Pond Embankments, CTL/Thompson Inc. <br /> 1998 <br /> 16) Adjudicated and permitted surface and groundwater locations within 1 mile of the Permit <br /> boundary <br /> 18) Gulch A Small Area Exemption <br /> Exh. 7-14TOC-1 Revision Date: 11/16/20 <br /> Revision No.: TR-145 <br />