Laserfiche WebLink
NEWMONT <br /> "1oNI^ Ul i•y '..r r3rl=' <br /> Proctor test(ASTM D698). This layer will be denser than the underlying in-situ material. This interface <br /> between the SLF and subarade becomes a path for moisture to follow into the leak detection located <br /> downhill. <br /> DRMS Comment(italics): <br /> Section 4.6-Leak Detection Sistem. This section also states the LDS will he constructed on a 1% <br /> grade. Please address /tow LDS will maintain a IN) grade with the projected settlement of the <br /> backfilled Schist Island Pit and, if projected, the graded SGO&4. <br /> Newmont Response: <br /> Although we believe a minimum slope of 1% on the leak detection trench is adequate, the minimum slope <br /> on the leak detection trench has been increased to 2% for additional conservatism to address the concerns <br /> around potential settlement. The updated design is provided in Attachment 13. <br /> DRMS Comment(italics): <br /> -8. Section 4.8-.4ppurtenant Structures. This section identifies the cover over the geomembrane liner <br /> .shall be a minimum oj'6.5 feet for a loaded Cat -93. Please confirm the minimum cover of'6.5 feet <br /> as it was the Division's understanding this has historically been 20 feet. <br /> Newmont Response: <br /> This statement has been removed from the text of the design report. The cover thickness over the <br /> geomembrane liner will remain at the historical value of 20 feet. <br /> DRMS Comment(italics): <br /> 79. Section 4.10 - Technical Speci iration. This section identifies a list of modifications to the <br /> previously approved Technical Specification jor F"LF?. The first proposed modification is to allow <br /> spent ore from Phase q of VLF 1 to be used as DCF Please address how the spent ore will he <br /> adequately rinsed decontaminated, sampled, and documented prior to hauling it off liner. <br /> Newmont Response: <br /> In advance of using spent leach material off-liner, CC&V commits to providing a future technical revision <br /> detailing the process to sample and verify ore intended to be re-used off of lined areas contains less than <br /> 0? mg/l WAD CN. <br /> DBMS Comment(italics): <br /> 80. Section 3.2, SGOS,4 Settlement. The Settlement Evaluation provides an evaluation of the proposed <br /> settlement of the backfilled Schist Island Pit but does not address if settling will occur on the graded <br /> SGOS.4. Please address if SGOS,4 settling will occur, and ij•so provide a settlement evaluation on <br /> the portions of the SGOU which tire graded out to he used as subgrade for portions of the Phase <br /> 3 VLF2. <br />