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TR-14 Revision <br /> Page 2 <br /> The following are SGC' s answers to the concerns stated in the April <br /> 15, 1993 DMG TR-14 adequacy review letter that are applicable to <br /> the Brenneman bulkheads . <br /> Item 4 . Construction Performance Plan <br /> SGC agrees that quality assurance and quality control of the <br /> bulkhead construction is important to assure performance as <br /> designed . <br /> SGC will commit to the following: <br /> 1) Project oversight will be by a professional engineer <br /> (P .E . ) . Construction certification will be that the <br /> bulkheads are built to design specifications which <br /> includes the items listed in Item 4 of the DMG list of <br /> concerns. If field conditions do not conform to design <br /> assumptions, the field engineer will consult with the <br /> design engineer and any field changes will be documented. <br /> 2) The DMG will be provided the opportunity for pre-pour <br /> inspections . Every effort will be made to provide a 7 <br /> day advance notification to allow the DMG time to <br /> schedule an inspection visit prior to each pour . <br /> Item 7. Removal of Underground Equipment, Facilities and Materials <br /> Actual bulkhead construction for the Brenneman sites will not <br /> isolate any contaminates. The bulkhead sites are located in old <br /> mine workings separating the Sunnyside Mine and the Brenneman/Mogul <br /> Mine and towards the outside boundary limits of the Sunnyside Mine. <br /> Before access maintenance is stopped, Sunnyside Gold Corp. will <br /> inspect the affected areas and remove any items found that might <br /> have a deleterious effect on water pool quality. <br /> Item 8 . Potential for Failure from Thrust <br /> The design engineer John F. Abel , Jr . P .E . prepared responses to <br /> design adequacy questions. His letter report is attached for your <br /> detailed review. In summary, Mr . Abel provides references and <br /> calculations to support usage in design of the shear strength of <br /> concrete as the critical shear strength . <br />