Draft Environment Impact Assessment Report
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Draft Environment Impact Assessment Report Proposed Project Additional Capital as well as Maintenance Dredging and Disposal of dredged material Location: Existing approach Channel, Turning Circles and Berth pockets at Dry Bulk Terminal, Off Tekra, Nr. Tuna Village, Kutch District, Gujarat Project Proponent M/s Adani Kandla Bulk Terminal Pvt. Ltd. (AKBTPL) Environmental Consultant DETOX CORPORATION PVT LTD 3rd Floor, K. G. Chambers, Opp. Gujarat Samachar Press, Udhna Darwaja, Ring Road, Surat - 395 002. August, 2017 ADANI KANDLA BULK EIA report for EC and CRZ clearance for TERMINAL PVT. LTD. additional capital and maintenance dredging and disposal of dredged material Contents 1. Introduction 1 1.1 Project background 1 1.2 Project site details / Site selection 2 1.3 Need of the project 2 1.4 Existing infrastructure at dry bulk terminal at Tuna 2 1.5 Environmental legislation applicable to proposed project 4 1.6 Demarcation of High Tide Line 4 1.7 ToR compliance status 4 1.8 Structure of EIA report 9 2. Project description 12 2.1. Capital dredging and maintenance dredging 12 2.2. Project features 12 2.3. Project site details / Site selection 14 2.4. Salient features of dredging operations 17 2.5. Environmental considerations 19 2.6. Dredging and disposal plan for proposed project 20 3. Description of environment 22 3.1. Study area and study period 22 3.2. Gulf of Kutch 22 3.3. Terrestrial environment 23 3.3.1. Micrometeorology 23 3.3.2. Ambient air quality 25 3.3.3. Noise environment 25 3.4. Marine environment (Physical) 26 3.4.1. Tides 26 3.4.2. Currents 26 3.4.3. Wave conditions 27 3.4.4. Geo-technology of the site 28 3.5. Marine environment (Ecological) 28 3.5.1. Study area and study period 29 3.5.2. Parameters studied 30 3.5.3. Results of marine ecology 31 4. Anticipated environmental impacts 36 4.1. Introduction 36 4.2. Factors influencing potential impacts of dredging and disposal 36 4.3. Types of impacts 37 4.4. Project impacts 37 4.4.1. Impact of dredging and disposal on intertidal biota 37 4.4.2. Impact on mangrove communities 38 4.4.3. Impact on coral reefs 40 4.4.4. Impact on fisheries and fishing community due to dredging and disposal 41 4.5. Process impacts 42 4.5.1. Impact on air quality during dredging 42 DETOX CORPORATION PVT. LTD. AUGUST, 2017 ADANI KANDLA BULK EIA report for EC and CRZ clearance for TERMINAL PVT. LTD. additional capital and maintenance dredging and disposal of dredged material 4.5.2. Impact on water quality 42 4.5.3. Impact on organic matter and nutrients at dredging and disposal sites 44 4.5.4. Impact on sediment quality at dredging and disposal sites 44 4.5.5. Impact on planktonic communities at dredging and disposal sites 47 4.5.6. Removal of meio & macro benthic animals from sub tidal region due to dredging 48 4.5.7. Smothering/blanketing of meio & macro benthic communities at disposal site 50 4.6. Hydrodynamic model study interpretation for impact assessment 51 4.6.1. The sediment transport studies 52 4.6.2. Shoreline morphological changes 52 4.6.3. Model study interpretation at disposal site 52 4.6.4. Model study interpretation at dredging zone 53 5. Ecological impact assessment and mitigation measures 54 5.1. Methodology of ecological impact assessment 54 5.2. Integration of studies into the ecological impact assessment report 57 5.3. Potential impacts on dredge sites 58 5.4. Potential impacts on dredge disposal sites 60 6. Environment management plan 64 6.1. Introduction 64 6.2. Managing and informing contractors 65 6.3. Timing of dredging and disposal operations 65 6.4. Selection of eco-friendly dredging methods 66 6.4.1. EMP to reduce sediment plume during dredging 66 6.4.2. EMP to reduce impact on marine fauna 67 6.4.3. EMP to reduce impingement and entrainment 68 6.4.4. EMP for placement of dredge spoils 68 6.4.5. EMP to reduce marine pollution from dredger 69 6.5. Oil spill management 69 6.5.1. Spill management controls 69 6.5.2. Spill response 70 6.6. Management structure 70 7. Environment monitoring plan 73 7.1. Introduction 73 7.2. Environment monitoring plan 73 8. Risk and disaster associated with dredging 76 8.1. Introduction 76 8.2. The VTS centre’s role 76 9. Project benefits 79 10. Additional studies conducted 80 10.1. Numerical modelling studies 80 10.2. Marine ecological impact assessment study 80 10.3. Bathymetry survey 81 10.4. Demarcation of HTL/LTL and CRZ area 81 11. Summary and conclusion 82 11.1. Introduction 82 11.2. Project site details 83 11.3. Project description 83 DETOX CORPORATION PVT. LTD. AUGUST, 2017 ADANI KANDLA BULK EIA report for EC and CRZ clearance for TERMINAL PVT. LTD. additional capital and maintenance dredging and disposal of dredged material 11.3.1. Dredging plan for proposed dredging 83 11.4. Baseline studies 83 11.4.1. Micrometeorology 83 11.4.2. Ambient air quality 84 11.4.3. Noise environment 84 11.4.4. Marine environment 84 11.5. Geo-technology of the site 85 11.6. Marine ecology 85 11.7. Dredging activity and its identified impacts 88 11.8. Types of impacts 88 11.8.1. Project impacts 88 11.8.2. Process impacts 89 11.9. Hydrodynamic model study interpretation for impact assessment 92 11.10. Environment management plan 93 11.10.1. EMP to reduce sediment plume during dredging 93 11.10.2. EMP to reduce impact on marine fauna 94 11.10.3. EMP to reduce impingement and entrainment 94 11.10.4. EMP for placement of dredge spoils 94 11.10.5. EMP to reduce marine pollution from dredger 94 11.10.6. Spill management controls 95 11.11. Environment monitoring plan 95 11.12. Risk and disaster associated with dredging 95 12. Disclosure of consultants 96 List of Tables Table 1-1 Existing infrastructure 3 Table 1-2 Compliance to TOR points 5 Table 2-1 Project at a glance 13 Table 2-2 Dredging plan of the proposed project 20 Table 3-1 Ambient Air Quality Sampling Stations 25 Table 3-2 Summary of Ambient Air Quality monitoring 25 Table 3-3 Summary of Noise monitoring 26 Table 3-4 Tidal Levels at Kandla Port 26 Table 3-5 Wave height 27 Table 3-6 Wave height exceedance during year 27 Table 3-7 Generalized Sub-Seabed profile adopted for the project 28 Table 3-8 GPS locations of sampling for marine ecology study 29 Table 3-9 Parameters studied for Marine Ecological study 30 DETOX CORPORATION PVT. LTD. AUGUST, 2017 ADANI KANDLA BULK EIA report for EC and CRZ clearance for TERMINAL PVT. LTD. additional capital and maintenance dredging and disposal of dredged material Table 5-1 Criteria used to determine the consequence of an impact 55 Table 5-2 Consequence rating of an impact 55 Table 5-3 Probability classification 55 Table 5-4 Impact significance rating 56 Table 5-5 Impact status 57 Table 5-6 Confidence classification 57 Table 5-7 Significance of removal of biological communities at Dredging area 59 Table 5-8 Significance of effects of turbid plumes at dredging zone 59 Table 5-9 Significance of settlement of suspended sediments during dredging 60 Table 5-10 Significance of sediment deposition on benthic macro fauna at disposal site 62 Table 5-11 Significance of the impacts due to toxic metals in dredge spoil 63 Table 5-12 Significance of the potential effects of turbidity from dredge spoils Disposal on habitats adjacent to Site 63 Table 6-1 Comparison of DOP and EMP 70 Table 6-2 Key components of Environmental Management Plan activities 71 Table 7-1 Monitoring Frequency and duration 74 Table 7-2 Parameters for Environment Monitoroing 74 Table 7-3 Budget estimate for Environment monitoring 75 Table 8-1 Risk assessment of activities associated with dredging 77 List of Figures Figure 1-1 Existing infrastructure 3 Figure 2-1 Proposed project site location 15 Figure 2-2 Geographical location of existing project 16 Figure 2-3 Trailing Suction Hopper Dredger 18 Figure 3-1 Wind Rose for March to June 2016 24 Figure 3-2 Map showing sampling locations for marine ecology study 30 Figure 4-1 Distance to the mangrove patches from the nearest dredging zone 39 Figure 4-2 Distance to the nearest mangroves from dredge disposal site 40 Figure 4-3 Distance to Piroton island from dredge disposal site 41 DETOX CORPORATION PVT. LTD. AUGUST, 2017 ADANI KANDLA BULK EIA report for EC and CRZ clearance for TERMINAL PVT. LTD. additional capital and maintenance dredging and disposal of dredged material Annexures 1 CRZ report and map prepared by Institute of Remote Sensing, Anna University, Chennai 100 2 Terms of Reference issued by MoEF & CC 129 3 Letter submitted by AKBTPL to MoEF & CC for ToR compliance 134 4 Compliance certification from MoEF & CC 136 5 Clarification submitted by AKBTPL to MoEF & CC 158 6 Numerical modelling studies for predicting the impacts of the proposed project 194 7 Marine Ecology Impact Assessment report 337 8 Bathymetry map of the project area 433 9 Baseline environmental monitoring report 435 DETOX CORPORATION PVT. LTD. AUGUST, 2017 ADANI KANDLA BULK EIA report for EC and CRZ clearance for TERMINAL PVT. LTD. additional capital and maintenance dredging and disposal of dredged material Abbreviations AIS Automated Identification Systems AKBTPL Adani Kandla Bulk Terminal Pvt.