2012-12-03_REPORT - M1980244 - Laserfiche WebLink

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amec-_- D) Drain Cover Fill (DCF) Drain cover fill (DCF) placement performed in the area shown on Figure 2. The DCF was hauled from the processing area to the placement area using 40 -ton articulating haul trucks loaded by a CAT 988 front -end loader. The DCF was placed in a 2 -foot lift using various CAT dozers except where haul routes were established. Haul routes consisted of four -foot lifts to be spread into 2- foot lifts later. Laborers were present at all times during placement removing debris /sandbags and assisting the dozer operator with lift thickness. All DCF was placed on previously approved primary geomembrane. AMEC field representatives monitored the DCF placement constantly. Temperatures were monitored by an AMEC field representative prior to fill placement when ambient temperatures were below 32 °F. Fill material was not placed until the entire fill area was at or above 32 °F. Fill temperatures averaged between 34 °F and 43 °F This Week Cumulative Location (tons) (tons) Comments E.Cresson Clay Process 0 81,150 SLF processing is temporarily paused Total 0 81,510 SLF processing is temporarily paused D) Drain Cover Fill (DCF) Drain cover fill (DCF) placement performed in the area shown on Figure 2. The DCF was hauled from the processing area to the placement area using 40 -ton articulating haul trucks loaded by a CAT 988 front -end loader. The DCF was placed in a 2 -foot lift using various CAT dozers except where haul routes were established. Haul routes consisted of four -foot lifts to be spread into 2- foot lifts later. Laborers were present at all times during placement removing debris /sandbags and assisting the dozer operator with lift thickness. All DCF was placed on previously approved primary geomembrane. AMEC field representatives monitored the DCF placement constantly. Temperatures were monitored by an AMEC field representative prior to fill placement when ambient temperatures were below 32 °F. Fill material was not placed until the entire fill area was at or above 32 °F. Fill temperatures averaged between 34 °F and 43 °F II) Geosynthetics A) Geomembrane No work performed during the week. III) Storm Water Management A) Best Management Practices (BMP) Best Management Practices are being observed throughout the Mill Site Earthworks project. IV) MSE Wall Construction A) Wall #3 Installation of wall components was performed for Mat #6. Mat #6 was inspected and approved for wall backfill placement. MSE wall #3 construction paused at approximately 2pm on the 19th and efforts were focused on the construction of MSE wall #4 B) Wall #4 Wall components and backfill materials for Mat # 4 thru Mat #6 were inspected and accepted by an AMEC field representative. Mat #7 began on the 21St and did not complete prior to end of shift. Nuclear density testing was performed on the wall backfill for each Mat as needed. Testing and inspections resulted in passing tests. MEW Weekly Report WE 11.24.2012.docx This Week Cumulative Location (tons) (tons) Comments DCF Process 0 228,613 DCF processing is temporarily paused Total 0 228,613 DCF processing is temporarily paused II) Geosynthetics A) Geomembrane No work performed during the week. III) Storm Water Management A) Best Management Practices (BMP) Best Management Practices are being observed throughout the Mill Site Earthworks project. IV) MSE Wall Construction A) Wall #3 Installation of wall components was performed for Mat #6. Mat #6 was inspected and approved for wall backfill placement. MSE wall #3 construction paused at approximately 2pm on the 19th and efforts were focused on the construction of MSE wall #4 B) Wall #4 Wall components and backfill materials for Mat # 4 thru Mat #6 were inspected and accepted by an AMEC field representative. Mat #7 began on the 21St and did not complete prior to end of shift. Nuclear density testing was performed on the wall backfill for each Mat as needed. Testing and inspections resulted in passing tests. MEW Weekly Report WE 11.24.2012.docx