Evaluation of the Potential Impacts on Biodiversity, Based on the Hydrogeological Characteristics during Low Flow of the River Hron ENEX trade, s.r.o. - Evaluation of the Potential Impacts on Biodiversity, Based on the Hydrogeological Characteristics during Low Flow of the River LIST OF ABBREVIATIONS: CIA Cumulative Impact Assessment and Management WWTP Wastewater Treatment Plant DEMI water Demineralized water EMO Mochovce Nuclear Power Plant, Units 1, 2, 3, 4 EO Population Equivalent IAEA International Atomic Energy Agency IFC International Finance Corporation NPP Nuclear Power Plant REO Regional Environment Office ERML Environment Radiation Monitoring Laboratory MVE Small Hydro Power Plant NR SR National Council of the Slovak Republic GR Government Regulation ObÚ ŽP Municipality Office of Environment OHO Organization of Radiation Response OÚ Municipality rkm River kilometre NRWR National Radioactive Waste Repository SE, a.s Slovak Power Plant, a joint stock company SE-MO34 Mochovce Nuclear Power Plant, Units 3 and 4. SE-EMO12 Mochovce Nuclear Power Plant, Units 1 and 2. SR Slovak Republic SVP, šp. Slovak Water Management Enterprise, State Enterprise NW Northwest TDL Thermoluminescent Dosimeters TDS Teledosimetric System TVD Significant Industrial Water TVN Insignificant Industrial Water NRA Nuclear Regulatory Authority PHA Public Health Authority VD Waterworks VEC Valued Environmental and Social Component WENRA West Nuclear Regulators' Association ŽP Environment Strana 2 z 84 ENEX trade, s.r.o. - Evaluation of the Potential Impacts on Biodiversity, Based on the Hydrogeological Characteristics during Low Flow of the River List of Images Figure 1: Location of Mochovce NPP..................................................................................................... 9 Figure 2: Definition of the Area of Interest ........................................................................................... 14 Figure 3: Hydrographic Map, Water Resources and Discharges and Process Water Cycle in EMO . 21 Figure 4: The Cycle of Process Water at Mochovce NPP .................................................................... 29 Figure 5: Consumption of Industrial Water and Cooling Water in Thousands m3 ............................... 39 Figure 6: The Amount of Waste Water Discharged into the Hron River from Mochovce NPP ............ 40 Figure 7: VD Veľké Kozmálovce - Volume Curve ................................................................................ 50 Figure 8: VD Veľké Kozmálovce - Flooded Area Curve ....................................................................... 51 Figure 9: Specialized Hydrogeological Map ........................................................................................ 54 Figure 10: The Amount of Collected Drinking Water ........................................................................... 58 Figure 11: The Amount of the Discharged Wastewater ........................................................................ 60 Figure 12: Placement of Stations TDS in the Surroundings of the Mochovce NPP ............................. 72 Figure 13: Protection Zone ................................................................................................................... 79 Strana 3 z 84 ENEX trade, s.r.o. - Evaluation of the Potential Impacts on Biodiversity, Based on the Hydrogeological Characteristics during Low Flow of the River List of Tables Table 1: Administrative Data on the Studied Area ................................................................................. 8 Table 2: Limit Values for Waste Water Discharged from EMO ........................................................... 17 Table 3: Permitted Amount of Discharged Waste Water in the Operation of 2 Units SE-EMO12 ....... 18 Table 4: Permitted Amount of Discharged Waste Water in the Operation of 4 Units EMO................. 18 Table 5: Hourly Water Demand for EMO12 ......................................................................................... 23 Table 6: Annual Water Consumption of SE-EMO12 ............................................................................ 23 Table 7: Hourly Water Demand for the SE-MO34................................................................................ 24 Table 8: Annual Water Consumption of SE-MO34 ............................................................................... 24 Table 9: Planned Scenarios for Simultaneous Operation of all Four Units of EMO ........................... 25 Table 10: Estimated Annual Demand of Hron Water to Operate EMO 1, 2, 3, 4................................. 25 Table 11: Annual Consumption Hron Water in the Period 2010-2014 ................................................ 26 Table 12: Groundwater Abstraction in the Period 2010-2014 ............................................................. 27 Table 13: Consumption of Drinking Water for the Years 2010 to 2014 ............................................... 27 Table 14: Permitted Emission Limits in Discharged Waters ................................................................ 30 Table 15: Waste Water Discharged into the Hron River from Mochovce 2010-2014 .......................... 31 Table 16: Comparison of Qualitative Indicators of Pollution Discharged into the Hron with Limits in 2010-2014 .............................................................................................................................................. 33 Table 17: Comparison of Balance Indicators of Pollution Discharged into the Hron River with Limits in 2010-2014.......................................................................................................................................... 34 Table 18: Development of Balance Values of Chemical Indicators of Waste Water Discharged into the Hron for the Period 2010-2014 in t.year-1 ........................................................................................... 35 Table 19: Typical Temperatures (°C) in the Years 2009-2013 ............................................................. 43 Table 20: Monthly Rainfall from the Mochovce Station 2009-2014 ..................................................... 43 Table 21: Hydrological Data on the Hron River - Brehy Profile ......................................................... 47 Table 22: Hydrology VD Veľké Kozmálovce ........................................................................................ 48 Table 23: Characteristic Levels in the Reservoir .................................................................................. 48 Table 24: Volume of Water in the Reservoir Veľké Kozmálovce at Different Level ............................. 49 Table 25: Projected Capacity of the Reservoir VD Veľké Kozmálovce ................................................ 49 Table 26: Drinking Water Consumption in Years 2010-2014SE-MO34 ............................................... 58 Table 27: The Amount of Discharged Treated Wastewater for 2010-2014 .......................................... 59 Table 28: Measured Concentration of Chemicals of Concerns in River Hron and Discharge Water Samples. ................................................................................................................................................. 63 Table 29: River Hron Flow Rates (Gauging Station Veľké Kozmálovce - River km 73.10) ................. 64 Table 30: Effective Discharged Flow Rate for 2 Units and Estimated Discharge Flow Rate for 4 Units ............................................................................................................................................................... 64 Table 31: The Dilution Factor .............................................................................................................. 64 Table 32: Amount of Discharged Wastewater: ..................................................................................... 65 Table 33: Limit Values of Discharged Wastewater Discharged Pursuant to NV 269/2010 Coll. ........ 65 Strana 4 z 84 ENEX trade, s.r.o. - Evaluation of the Potential Impacts on Biodiversity, Based on the Hydrogeological Characteristics during Low Flow of the River CONTENT 1 Introduction ....................................................................................................................... 7 2 Basic Information about the Proponent ............................................................................ 8 3 Basic Data on the 3rd and the 4th Unit of Mochovce NPP ............................................ 10 4 Predictive Hydrogeological Assessment of the Key Parameters of the River Hron in the Low Flow after Units 3 and 4 of Mochovce NPP Were Commissioned ........................ 14 4.1 The Characteristics of the Relevant Bodies of Surface-Water and Groundwater ........ 15 4.2 Data on Inputs ............................................................................................................... 19 4.2.1 Surface Water Abstractions for Technological Purposes ................................... 19 4.2.2 Collection of Groundwater for Drinking and Service Purposes ......................... 27 4.3 Data on Outputs ............................................................................................................ 28 4.3.1 Waste Water ........................................................................................................ 28 4.3.2 Qualitative Indicators of Discharged Waste Water............................................. 32 4.4 Measurements of Previous Periods on Low Flow,