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DEPARTMENT OF NATURAL RESOURCES <br />David H. Getche& Executive Director <br />MINED LAND RECLAMATION DIVISION <br />DAVID C. SHELTON, Dlroetor <br />Richard D. Lamm <br />Governor <br />DNTE: October 24, 2984 <br />T0: Joe Oliver ~1 ~( /~ <br />FROM: Jim Pendletong.^~-~ ~ "" - <br />RE: Empire Energy Corporation's Response to Stipulation Number 21, Permit <br />No. C-044-81 <br />Pursuant to your request, I have reviewed Empire Energy Corporation's response <br />to Stipulation No. 21, placed upon Permit No. C-044-81, issued for the Eagle <br />No. 5 and No. 9 Mines in September, 1983. This stipulation requires the <br />development of an appropriate portal sealing plan. <br />Empire has submitted a plan projected to resist a 140 foot hydrostatic head at <br />the location of the portal seal. Assuming that the company's projection of a <br />maximum 140 foot hydrostatic head, equivalent to the pre-mining hydrostatic <br />head in that area, is prudent, their design will resist the applied load. I <br />will rely upon your judgment of the hydraulic assumption's prudence. <br />JP/fw <br />cc: Mike Long <br />Doc. 4878 <br /> <br /> <br />ta. <br />.~ <br />423 Centennial Building, 1313 Sherman Street Denver, Colorado 80203 Tel. (303) 866-3567 <br />iiiiiuiiiini <br />