2023-05-02_REVISION - M2001046 - Laserfiche WebLink

Home Browse Search

Nix-Owens-Mon Water Quality No Southeastern To monitor the groundwater upgradient of the central portion of 4A &Water comer of site gravel pit.Can compare results to the downgradient station Elevation results to determine if any impacts to groundwater have occurred. Nix-Owens-Mon Water Quality Yes Western perimeter To monitor the groundwater downgradient of the gravel pit& 5A &Water of site. influence from nearby mining operations.Can compare results to Elevation the upgradient station results to determine if any impacts to groundwater have occurred Nix-RMCC-Mon 6 Water Quality Yes Western perimeter To monitor the groundwater downgradient of the gravel pit.Can &Water of site. compare results to the upgradient station results to determine if Elevation any impacts to groundwater have occurred Nix-RMCC-Mon 7 Water Quality No Eastern perimeter To monitor the groundwater upgradient of the mining operation. &Water of site. Can compare results to the downgradient station results to Elevation determine if any impacts to groundwater have occurred. Nix-RMCC-Mon 8 Water Quality No Northern perimeter To monitor the groundwater upgradient of the mining operation. &Water of site. Can compare results to the downgradient station results to Elevation determine if any impacts to groundwater have occurred. Nix-RMCC-Mon 9 Water Quality Yes Northwest comer of To monitor the groundwater downgradient of the gravel pit. &Water site. Installed in April 2023.Can compare results to the upgradient Elevation station results to determine if any impacts to groundwater have occurred. Piezo 13H-5B Water No North of Piezo BH- To establish groundwater flow direction,not used for water Elevation 5C,in cell 2. quality sample collection.Included in monthly water level sampling. Piezo BH-5C Water No Northwestern To establish groundwater flow direction,not used for water Elevation mining envelope,in quality sample collection.Included in monthly water level cell 2. sampling. Piezo BH-14 Water No On eastern site To establish groundwater flow direction,not used for water Elevation perimeter,in cell 2. quality sample collection.Included in monthly water level sampling. Piezo BH-21A Water No Central western To establish groundwater flow direction,not used for water Elevation perimeter,on quality sample collection.Included in monthly water level southern perimeter sampling. of cell 3. The following wells have been identified as the POC wells: Nix-Owens-Mon 5A, Nix- RMCC-Mon 6 and Nix-RMCC-Mon 9. Note: Nix-RMCC-Mon 9, in the northwest corner of the site, was installed in April 2023 at DRMS's request to provide data in the most downgradient point in that area of the permit. Wells Nix-Owens-Mon 2 and Nix-RMCC-Mon 6, located upstream and downstream, respectively, of the southwest mining envelope (including Cell 1, Cell 6, the proposed plant, siltation pond, and freshwater pond) will allow characterization of groundwater impacts of operations to the groundwater quality. Wells Nix-Owens-Mon 4A and Nix- Owens Mon 5A, located upstream and downstream of the southern mining envelop will allow determination of groundwater impacts from Cells 4 and 5. Similarly, wells Nix- RMCC-Mon 7 and Nix-RMCC-Mon 5A, located upstream and downstream of the northwestern mining envelope will allow determination of groundwater impacts across Cell 2 and Cell 3. Nix-RMCC-Mon 9 will be compared against Nix-RMMC-Mon 8 to evaluate influence across the northern perimeter of the site. Because Nix will use slurry walls, any water quality effects on groundwater are expected to be negligible. 9