1993-09-23_REVISION - M1977378 - Laserfiche WebLink

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SENT BY:Sunn95ide Gold CorP 09-23-93 03:34PM 30338?5310-9 303 832 8106 # 2 Responses to Division Concerns Page 12 a. Publia NOW ication and filing with the County Clerk SGC will provide documentation that the required Public Notice was published in the Sily erton Standard and the Miner and that all owners of record of surface rights to the affected land and all owner s of he affected 1 nd ecord of lands that be sent within copii esfeet of the boundary oof the Public Notice by return receipt as well as the San Juan County Board of County Commissioners. The "affected lands" are interpreted to mean the permitted Bagin s for the American Tunnel , Terry Tunnel and S A permanent filing will be made TRt14 he San Juan County Clerk and Recorder after approval 7. Removal of under round Equipmentr Facilities and Materials SGC will inspect the accessible underground workings and remove materials that may serve to contaminate the mine pool (ie transformers, light fixture ballasts and stored fuel, oil or grease) . g. Potential for Failure from Thrust Strength related concerns were addressed ndappr approved of TRtlwith e June 4, 1993 submittal requesting partial for construction of the F-Level and S-Level Brenneman bulkheads. Tne American Tunnel and Terry Tunnel bulkheads are the same design and SGC assumes the design and strength concerns have been adequately addressed with that submittal. SGC will submit long sections of the bulkhead sites after cleaning to provide assurance that adequate perimeter area irregularity exists with no adverse tapering that will affect the bulkhead's capacity for shear resistance. 9. Diversion Pipe Flow Data The time interval that the stability of the bulkhead could be compromised by the by-pass flow exceeding its capacity is relatively short- This time interva extez�cimat l s fromth3 dsys� of pour until the concrete has cured app Y After that time interval, the concrete will be strong enough to withstand any conceivable force that may develop from water head building up behind the bulkhead with an open valve. The capacity of the 1pe Will also increase or decre&se at the bypass pipe entrance andwill depending on on head available be evaluated in that light.