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Newmont CC and V Gold Mining Company <br />VLF2 Phase 3 Stage B <br />Stage B 2024 CQA <br />NewFields Project 475.0106.069 <br />August 13, 2024 <br /> <br /> <br />Page 2 <br />Previously, 40mil HDPE Smooth geomembrane and 80mil LLDPE Double Sided Micro-spike <br />geomembrane have been substituted and installed in the Leak Detection Trench in 2020 and <br />2023. The substitution was documented in the approved Certification Reports. <br />Attached are the AGRU Data Sheets for comparison of the 40mil LLDPE Smooth and 40mil HDPE <br />Micro-Spike products and the Technical Specification No. 02776-0 Geomembrane. Additionally, <br />a table has been provided for comparison of physical properties between products. <br /> <br />If you have any questions or require additional information, please contact the undersigned. <br /> <br />Sincerely, <br />NewFields Mining Design & Technical Services Reviewed by: <br /> <br /> <br /> <br /> <br /> <br />Tyler Wendlandt Jay Janney-Moore, P.E. <br />Project Resident Engineer of Record <br /> <br />TW/tw/jnm <br /> <br /> <br />Attachments: <br /> <br />1. Geomembrane Materials Comparison Table1 <br />2. AGRU Data Sheets2 <br />3. VLF2 Phase 3 Stage B and C Leak Detection Details Drawing A420 <br />4. VLF2 Phase 3 Stage B and C Leak Detection Details Drawing A421 <br />5. VLF2 Phase 3 Technical Specification No. 02776-0 <br /> <br /> <br /> <br /> <br />1 Source – AGRU Data Sheets <br />2 Source - https://agruamerica.com/product/geomembranes/