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Home My WebLink AboutDWQ-2025-001291Appendix E Permit # UGW350010 BINGHAM CANYON MINE AND WATER COLLECTION SYSTEM OPERATIONAL MONITORING PLAN MONITORING REQUIREMENTS AND PLAN CONTENT Operational monitoring includes flow and quality sampling of meteoric and storm-water flow. Kennecott Utah Copper LLC (Kennecott) has an existing general, operational, and groundwater monitoring plan that is described in the Ground Water Characterization and Monitoring Plan (GCMP) Kennecott, 2014. This Operational Monitoring Plan for the Bingham Canyon Mine/Water Collection System includes the Water Quality Sampling program. WATER QUALITY MONITORING PROGRAM Surface Water Sampling Meteoric and Water Collection System - As a part of a continuing operational monitoring program, water quality samples from all drainages associated with the water collection system will be collected two times per year. The Water Collection System concrete drainage structures will be sampled once in April or May and again in September or October. The Surface Water Sample Sites Drawing (Figure 1 of the Permit) shows the current locations of the 23 operational surface water sample sites. There are 25 surface water sampling sites (refer to figure 454-T-0119). Tunnels and Seeps - Additionally, quarterly flow and semiannual water quality samples will be collected for each of the flows from mine tunnels that underlie the Bingham Canyon Mine Waste Rock Piles. Surface seeps will also be sampled for semiannual flow and water quality. Refer to Appendix A for additional permit conditions related to surface seeps. Table E-1 lists all current monitoring sites for the operational monitoring program and E-2 lists new and replaced cutoff walls installed during the EWRE. Table E-3 lists the cutoff walls removed or moved during the SWRR project. The cutoff walls kept their designation descriptions. Flow information for each surface water sample site will be provided in the annual report as part of the operational monitoring discussion. All sampling will be performed in compliance with the protocols and standard operating practices specified in the current approved version of the GCMP and attachments. The water quality date will be provided in the annual report as part of the operational monitoring discussion. Bluewater Repository - The leachate collection system sumps for the Bluewater Repository shall be APRIL, 2020 OPERATIONAL MONITORING PLAN; APPENDIX E; KENNECOTT BINGHAM CANYON MINE AND WATER COLLECTION SYSTEM PAGE 2 examined semi-annually. A semi-annual water quality sample will be collected of leachate flowing into each collection sump. Results from sampling will be reported in the annual operational monitoring report provided to the Utah Division of Water Quality (DWQ). Refer to Appendix B for additional permit conditions related to the repository. MONITORING TECHNIQUES AND DATA VALIDATION All monitoring will be performed using the methods for sampling, analyses, and quality control specified in the GCMP. If data outliers or quality assurance/quality control problems are identified, the sample will be retested, and the wells will be re-sampled within 30 days. If the results from the retesting or re-sampling show that the data is an outlier, normal monitoring will resume. REPORTING Kennecott will submit compliance groundwater monitoring data to the DWQ on a quarterly basis. The reports will include a summary of all monitoring data collected during the quarter. Field measurements (groundwater levels, specific conductance, pH) and certificates of analysis will be provided. Operational monitoring data for operational sites including cut-off walls, seeps, tunnels, Bluewater Repository, informational wells and extraction wells will be submitted to the DWQ in an annual report to be provided by March 31 each year. The annual report will contain results of monitoring in a tabular form with descriptive statistics such as: number of samples, average, standard deviation, maximum and minimum values for each site. Each site will be described with time series graphs of significant parameters over the period of record for that site; with analytical data reported from the past three years through the current reporting cycle A narrative description shall be included that describes any significant trends or observations on the data. APRIL, 2020 OPERATIONAL MONITORING PLAN; APPENDIX E; KENNECOTT BINGHAM CANYON MINE AND WATER COLLECTION SYSTEM PAGE 3 Table E-1 OPERATIONAL SURFACE SITES NORTHING EASTING MONITORING FREQUENCY WATER COLLECTION SYSTEM Bingham Ck. Cut-off wall (ECP2562) 15784 16905 Semiannual water quality and quarterly volumetric flow Bluewater 1/2 Collection Box (ECP2682) 15145 13910 Semiannual water quality and quarterly volumetric flow Bluewater 1 Flume (MDP2679) 14467 13613 Semiannual water quality and quarterly volumetric flow Bluewater 2 Flume (ECP2709) 12271 16656 Semiannual water quality and quarterly volumetric flow Bluewater 3 Flume (ECP2674) 11022 16182 Semiannual water quality and quarterly volumetric flow Midas 1 Flume (ECP2670) 9391 15692 Semiannual water quality and quarterly volumetric flow Midas 2 Flume (ECP2668) 9189 15494 Semiannual water quality and quarterly volumetric flow Midas Flume (ECP2662) 8842 16582 Semiannual water quality and quarterly volumetric flow South Congor Flume (ECP2654) 8840 16582 Semiannual water quality and quarterly volumetric flow Crapo Flume (ECP2651) 6831 17037 Semiannual water quality and quarterly volumetric flow South Crapo Flume (ECP2858) 6670 17332 Semiannual water quality and quarterly volumetric flow North Keystone Flume (ECP2648) 6029 17716 Semiannual water quality and quarterly volumetric flow Keystone and Lost Creek Flume (ECP2629) 3397 17201 Semiannual water quality and quarterly volumetric flow OPERATIONAL SURFACE SITES NORTHING EASTING MONITORING FREQUENCY APRIL, 2020 OPERATIONAL MONITORING PLAN; APPENDIX E; KENNECOTT BINGHAM CANYON MINE AND WATER COLLECTION SYSTEM PAGE 4 Copper 1 Flume (ECP2624) 1457 17078 Semiannual water quality and quarterly volumetric flow Copper 2 Flume (ECP2857) 1205 17093 Semiannual water quality and quarterly volumetric flow Copper 3 Flume (ECP2618) 629 16596 Semiannual water quality and quarterly volumetric flow Copper 4 Flume (ECP2856) -326 16111 Semiannual water quality and quarterly volumetric flow Yosemite Cut-off wall (ECP2616) -1302 12460 Semiannual water quality and quarterly volumetric flow Saints Rest Cut-off wall (ECP2614) -2797 13156 Semiannual water quality and quarterly volumetric flow S. Saints Rest Cut-off wall (ECP2612) -4318 13304 Semiannual water quality and quarterly volumetric flow Castro Flume (ECP2606) -5637 13598 Semiannual water quality and quarterly volumetric flow Butterfield 1 Cut-off wall (ECP2605) -7876 9515 Semiannual water quality and quarterly volumetric flow Olsen Cut-off wall (ECP2603) -8670 8481 Semiannual water quality and quarterly volumetric flow Queens Cut-off wall (ECP2601) -9483 6350 Semiannual water quality and quarterly volumetric flow TUNNELS Old Bingham Tunnel (ECP2664) 8990 16938 Semiannual water quality and quarterly volumetric flow Butterfield Tunnel (UPD010) -10026 10313 Semiannual water quality and quarterly volumetric flow Utah Metals Tunnel (BMP2712) -1255 -2563 Semiannual water quality and quarterly volumetric flow OPERATIONAL SURFACE SITES NORTHING EASTING MONITORING FREQUENCY Mascotte Tunnel (ECP2631) 3569 17231 Semiannual water quality and quarterly volumetric flow APRIL, 2020 OPERATIONAL MONITORING PLAN; APPENDIX E; KENNECOTT BINGHAM CANYON MINE AND WATER COLLECTION SYSTEM PAGE 5 5490 Tunnel (ECP2710) 15715 14960 Semiannual water quality and quarterly volumetric flow Bingham Tunnel (LWP2632) 3736 17773 Semiannual water quality and quarterly volumetric flow SURFACE SEEPS Butterfield 1 Seep (ECS2715) -7980 10500 Semiannual water quality and semiannual volumetric flow Upper Keystone Seep (ECS2716) 4220 15520 Semiannual water quality and semiannual volumetric flow Lower Keystone Seep (LWS2717) 3700 18600 Semiannual water quality and semiannual volumetric flow Crapo Seep (ECS2718) 6930 16130 Semiannual water quality and semiannual volumetric flow Upper Queen Seep (ECS2786) -7263 5097 Semiannual water quality and semiannual volumetric flow REPOSITORY Bluewater 1 North Sump (BRP292) 14146 16561 Semiannual water quality Bluewater 1 Main Sump (BRP1476) 13770 15740 Semiannual water quality Note: Coordinate system in Kennecott True North, See Permit Table 4 for Lat/Long Coordinates TBD – the lat and long will change when the construction is complete. The permit will be modified to reflect those changes. APRIL, 2020 OPERATIONAL MONITORING PLAN; APPENDIX E; KENNECOTT BINGHAM CANYON MINE AND WATER COLLECTION SYSTEM PAGE 6 Table E-2 Original and New Cut-off Walls Original Cut-off Wall (historic) New Cut-off Wall (relocated) Copper Copper 4 Copper 3 Copper 2 North Copper Copper 1 Lark Lost Creek Lost Creek Keystone Keystone North Keystone North Keystone South Crapo Crapo Crapo South Congor 2 South Congor Congor 1 Congor 2 Midas Table E-3 Original and New Cut-off Walls Original Cut-off Wall (historic) New Cut-off Wall (relocated) Yosemite Upper Yosemite – Re-located ~500 feet down gradient of existing Yosemite cut-off wall Lower Yosemite – Located ~850’ down gradient of Upper Yosemite cut-off wall Castro Upper wall breached and buried; lower Castro cut-off wall will remain in place Butterfield 1 Butterfield 1 – Located ~1500’ down gradient of existing cut-off wall Olsen Olsen – Located ~900’ down gradient of existing cut-off wall DWQ-2020-015196