2019-08-23_REVISION - M1980244 (5)

Home Browse Search

Cripple Creek&Victor Gold Mining Company ■ Squaw Gulch VLF Phase 2A Part 1 ■ Record of Construction Report 475.0106.032 August 21,2019 A CQA Monitor was present during all DCF placement activities to verify that the DCF was placed in accordance with the project Technical Specifications and that no damage to the geomembrane occurred. If any damage to the geomembrane was noted, work activities were paused, and the damage was repaired prior to resuming DCF placement. The DCF As-Built Isopach is shown on Record Drawing (Post 2019) No. 10. 3. QUALITY ASSURANCE/QUALITY CONTROL QA/QC activities were performed by the CQA Monitor for all shifts during the Squaw Gulch VLF project. An office and field laboratory was used to organize data and perform necessary laboratory testing onsite. QA/QC activities performed included: monitoring all aspects of construction, inspection and approval of all project components, laboratory testing of soils and geomembrane, field testing of soils and geomembrane, documentation of construction and QA/QC activities. Daily and weekly construction progress reports were generated and submitted to CC&V and the Engineer of Record (EOR). The weekly construction progress reports are presented in Appendix G. Photographs of construction activities were taken by the CQA Monitor throughout the Squaw Gulch VLF Phase 2A. Photographs of key construction elements are presented in Appendix H. All testing and inspections were performed in accordance with the Technical Specifications presented in Appendix C. 3.1. Testing Standards The CQA Monitor completed the earthwork laboratory testing in an on-site soils laboratory to verify that all earthwork construction materials met the project Technical Specifications. Geomembrane and geotextile samples were sent to a third-party laboratory to verify that the material properties met the project technical specifications. All testing was performed in accordance with these American Society of Testing and Materials (ASTM) standards. 3.1.1. Earthworks Testing Standards Particle size analysis (ASTM C117, C136, D1140, D6913) Atterberg limits (ASTM D4318) Laboratory moisture/density relationship (ASTM D698) Moisture Content (ASTM D2216) Flexible Wall Permeability (ASTM D5084, Method D) y Density of soil in place by nuclear method (ASTM D6938) y Soil Classification (ASTM D2488) P:\Projects\0106.032 VLF2 Phase 2 CQA\J-REPORTS\Cert Report-Phase 2A Part 1\DRMS Comments\475.0106.032 CCV PHASE 2A Part 1 ROC REPORT_Revl.docx Page 9