Laserfiche WebLink
<br />Subsidence Compliance <br />in OSI.1 Permit Application <br />for the East Lease <br />Subsidence Survey <br />l•lestern Slope Carbon, Inc. (I•!SC) has inventoried tJve permit area <br />and adjacent areas and has found them to contain the following structures: <br />1. State higha:ay 133 - This highway traverses the southern <br />portion of the lease, in an east to ~•~est direction. <br />2. hJSC's proposed intake shaft - This inia4:e shaft is <br />located bet~deen the highriay and the river in the <br />• <br />southwestern portion of the lease. <br />!•1SC has noted no renewable resource lands. This is based on the fact <br />that the er.isting topography consists of very steep slopes which are not <br />usable r'or production of food or fibre or as use for grazing lands. There <br />are no significant springs or streams and there are no ground water aquifers <br />overlying IdSC's East Lease. <br />P.ssuming that the worst case of subsidence were to occur, it is likely <br />• <br />that State highway 133 and the intake shaft would be damaged by the sub- <br />sidence. The deoree of damage would be dependent upon the uniformity of <br />the subsidence r•+hich could occur. In the event of subsidence damage to <br />the highway, it is expected that cracking and slumping would occur in the <br />hiah~.vay requiring re-compaction and re-grading of tfre highway periodically. <br />Pr•ojecied damage to the intake shaft from subsidence would include offsetting <br />of the shaft, rupture of the shaft lining and possible caving of the shaft <br />