Laserfiche WebLink
Henderson Mill— Permit No. M-1977-342 <br /> Technical Revision No. 27 <br /> Original Number 3 Dam Regrade <br /> The 3 Dam Reslope Project was approved as Technical Revision No.27 to Mill Permit No.M-1977- <br /> 342 on April 1&,2017. The project is located at Climax Molybdenum Company's Henderson Mill in <br /> Grand County. The project involved regrading the 3 Dam slope which varied from 3.41-1:1V to <br /> 3.5H:1V,to a uniform slope of 4:1(horizontal:vertical). The tailings material removed during the <br /> excavation was placed in the area between the toe of the 3 Dam stepback and the 3 Dam crest on <br /> both the north and south sides. <br /> Henderson Mill substantially completed construction of the project on August 4. The project was <br /> designed by AECOM. Modifications to the initial design have been reflected in the construction <br /> record drawings signed and dated November 9,2017. <br /> AECOM provided part-time construction oversight of the project with construction by Henderson <br /> Mill. The project was completed in general conformance with the approved design as submitted to <br /> the Division of Reclamation,Mining,and Safety. The statement is based in part on information <br /> provided by others. <br /> pp REG <br /> 686.sly, <br /> Lisa R.Yenne,P.E Go�0 C0E }F�✓,��c`p <br /> AECOM -� 4 Date: November 9.2017 <br /> Colorado PE No.35847 ' <br /> S/ONA1.� <br />