2015-10-08_REVISION - C1981041 (12)

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Also on this side of the house in the fill material surrounding the house he pointed out a surface crack that runs in a semicircular shape around the side of the house. The crack is not continuous but can be traced almost the entire length of west side of the home. The crack is approximately 30 feet long and two inches wide. There was no indication of any cracks in the foundation although there is only a small portion of the foundation exposed for inspection. We did not inspect the inside of the home. Please refer to the Division's inspection report dated August 5, 2014 for photographs of these features as described above. The August 5`h inspection report serves to document the features that Mr. Hasstedt has identified on his property within the mine permit boundary that he believes to be potentially caused by subsidence from the Roadside Portals Mine. The Division inquired whether or not Mr. Hasstedt would like to have his request for inspection kept confidential (Rule 5.02.5(2)), and he indicated that he did not. None of the other property owners with land overlying the Roadside Portals Mine have complained of subsidence related issues including the Ute Water Treatment facility located adjacent to and immediately south of the Hasstedt property (Photograph No. 30). The Erickson and Hasstedt properties had no surface disturbance associated with the mining but are considered to be affected area due to their location overlying underground workings. The Erickson (16.2 acres) and Hasstedt (13.8 acres) properties require further investigation and understanding of potential subsidence and hydrology related impacts and will not be released via the SL -08 bond release application. The last issue brought up by Rudy Fontanari on the September 18, 2013 inspection was in regards to future hydrologic problems if he should ever decide to run his water at full flow (which at one point he indicated that he has in the past and the water seemed to disappear). He further indicated that his land is farmable and if fully irrigated it could flood the mine and cause major problems with SCC's mine water discharge point and also the possibility of waters breaking through the portals and potentially impacting the Interstate 70 located below. SCC maintains and operates one permitted CDPS discharge point which is comprised entirely of mine water inflow to the underground workings. The inflow is gravity discharged to the Colorado River via Outfall 016 located at the low end of the Northwest Intake Pool at the Roadside South Portal Mine. Based on visual inspection of the lower diversion ditch, on September 18, 2013, it did not appear to be capable of conveying the water to the area Mr. Fontanari states that he has irrigated in the past. The culvert at the county road was silted in, the grade of the ditch needs to be improved below the culvert and the lower portion of the ditch needs to be cleared of sediment and tumbleweeds (see Photograph No. 31). Maintenance would be required for water diverted from Rapid Creek to be conveyed down to the Carey Pond via the lower ditch operated by Mr. Fontanari. A discussion of the Carey Pond, the South Portal reclamation and the South Portal french drain system is pertinent here. At some point following the SL -8 bond release inspection, Mr. Fontanari cleaned the lower diversion ditch to make it functional for conveying water. The ditch having been cleaned out was first observed during the Division inspection conducted on June 11, 2014. The South Portal dewatering pipe (Outfall 001) was cut off and valved in 2002 prior to sealing the portals. This water that normally went to the Colorado River now flows to Outfall 016. Approximately 6 cubic yards of grout was pumped into the South Portal dewatering pipe in January 2008. This should have been an adequate volume of grout to plug approximately 2,000 feet of the 4 - inch pipe. However, the grouting did not achieve a complete plug of the pipe and water continued to leak at less than 1 gpm. To control the leakage, the end of the pipe was capped off and encased in Page 23