Laserfiche WebLink
Upon completion of topsoil stripping, the site will be graded to the liner subgrade <br />elevation indicated by the Construction Drawings. Work will include excavation of <br />the below-grade portion of the pond and embankment fill placement along the pond <br />perimeter. Embankment and structural fill will be constructed from on-site soil in <br />controlled lifts with a maximum compacted thickness of 12 inches, and compacted in <br />accordance with the Construction Specifications. The liner subgrade in the below- <br />grade portion of the pond that is excavated in native soils will be graded to achieve a <br />smooth surface, moisture conditioned (if necessazy), and compacted in accordance <br />with the Construction Specifications. <br />Liner Section <br />The compacted soil liner layer will be placed in lifts to achieve a maximum <br />compacted thickness of 6-inches to satisfy the required density. As described above, <br />specific material and placement specifications will depend on the results of the <br />detailed geotechnical evaluations that aze underway. It is anticipated that QA/QC <br />testing for the compacted soil liner layer will include gradation (ASTM D422) and <br />Atterberg limit (ASTM D4318) testing, Standard Proctor (ASTM D698) compaction <br />tests, and field density testing (ASTM D3107, ASTM D2922, ASTM D1556). <br />The protective soil layer will be placed immediately after completion of the <br />compacted soil liner layer. The protective soil layer will be placed in two lifts with <br />compacted thicknesses of 12 inches and compacted in accordance with the <br />specifications. <br />Pumpin¢ Vault <br />The pumping vault will be constructed from precast concrete s or from cast-in-place <br />concrete. Pipe penetrations in the pumping vault will also be grouted. Prior [o <br />construction of the vault, the foundation will be inspected, loose or soft materials will <br />• <br />Battle Mountain Resources, /nc. Ci-1O Telesto Solutions, lnc. <br />P:Wmjrcu~212-Newmontl5aoluis)~SaN.uis\Permu AmeMmem- West Pit Ma~ugementlPermiWOendment v3.0oc /U/~'2~6 <br />