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Potential causee~ubsidence of the Solitario Ranch House • Page 2 <br />maintenance resulting in moisture intrusion to the structure, poor drainage, and <br />general aging." Further the authors discount the effects of underground mining <br />because of the lack of similar damage to the rest of the house. The investigation was <br />in depth, although no teats were conducted, and no explanation ae to why the <br />problem was eo recent, after confirming the house may be over 90 years old. <br /> <br />CONCLUSION <br />i <br />There are several potential causes of the damage to the house: poor drainage around <br />the foundations; changing of the ground water levels affecting the foundations, due <br />to underground mining; and subsidence due to the proximity of underground coal <br />mining. <br /> s <br />• The house which is more than 90 years old has stood unaffected until about <br />1991. <br />~ <br />1 <br />` <br />,*' ' <br />Site investigation does not confirm a recent change in drainage or other situation ~ <br />~ <br />~` <br />that would suddenly cause drainage to be a problem. <br />• There is no data which can positively show that the water table hoe been <br />affected either up or down, but this still could be a factor. <br />- There is definitely the possibility of mine subsidence, and this subsidence could <br />have affected the stability of the house. <br />EVALUATION <br />This report does not detail the nature and extent of damage to the house, the three <br />referenced reports are quite wmplete with this information and clearly note the fact <br />that damage has occurred. <br />= Subsidence Dae to Poor Drainage - <br />I visited the Ranch 1?/16/94, shortly after a heavy, wet snowstorm, which was <br />mailing ofi: I saw no ponding oCrunoff water around the house, the basement was <br />dry except for the sump, the drainage around the house appeared to be adequate, <br />~~ <br />there are no seeps or springs north of the house from the stream terrace ae there <br />" : <br />~ : <br />_ <br />are in other places along the terrace. There ie no evidence of those conditions that -.- <br />. ~ are reported to have contributed to subsidence, due to water in the soils around the ~ <br />house. <br />Subsidence Due to Lowering of the Local Water Table <br /> \, ,,~ ~ I <br />" <br />' <br />Subsidence could have been caused by raising or lowering of the local water table, ~ <br />~1 <br />and this could have been the result of underground mining. Water tables can be -} ~ ~ Q , <br />lowered by the interconnection with mine workings as they are pumped out during UAJ~U <br /> <br />PIONEER ENGINEERING <br />