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.; _. <br /> <br />Golden, Colorado. This construction certificate will <br />describe the soil compaction stand that will be adhered / <br />to during the construc ion of the tailings impoundment dam. 1/ <br />The Denver Engineering Corporation will also ensure that the <br />starter dam is properly sized and constructed in order to <br />maintain a 2 88 t~horl.aea~aL to vertical slope gradient. <br />During the field examination with Mr. Philip Saletta <br />and yourself, it was determined that a single permanent <br />diversion ditch will be sufficient to protect the tailings <br />pond from water runoff from the precipitation catchment area <br />above the tailings impoundment structure. The water runoff <br />diversion ditch that will be excavated above the tailings <br />impoundment area will be constructed according to the design <br />submitted to the Gold Hill Ventures by Ted Zorich and <br />Associates, Inc., of Denver, Colorado. c~kF~~y,~ <br />Gold Hill Ventures will forward the construction ~/ ~`~ <br />certifications that it receives from the Denver Engineering _\ ~~ <br />Corporation and Ted Zorich and Associates to the Mined Land ~ / <br />Reclamation Division within two weeks of the construction of J <br />the tailings impoundment structure and the water runoff <br />diversion ditch. <br />Finally, two qualified professional engineers from the ~ <br />Denver Engineering Corporation have inspected the bulkhea ~~~r`' <br />holding water in the Hazel A. adit, and do not believe tha w ;~ <br />it needs to be replaced or strengthened. Ted Zorich an ,,,1,~ ,~,4` <br />Associates, Inc. have suggested that if Gold Hill Venture ~~,,~~ <br />maintains sufficient freeboard in the tailings impoundmen <br />structure, the Hazel A. adit's bulkhead will not overflow or <br />give way due to excessive precipitation. Denver Engineering <br />Corporation will provide Gold Hill Ventures with their <br />engineers' review of the Hazel A. adit's bulkhead, and it / <br />will be provided to the Mined Land Reclamation Division <br />prior to using the adit to store decanted mill water. <br />If you or your staff have any questions or suggestions <br />regarding Gold Hill Ventures' response to these Amendment <br />Conditions please contact me in Longmont. <br />Sincerely, <br />Mark A. Steen <br />~or Gold Hill Ventures Limited Partnership <br />MAS/st <br />-5- <br />