Volume V Environmental Assessment Final Feasibility Study Dobrich - FINAL VERSION – PUBLISHED UPON APPROVAL by PROJECT STEERING COMMITTEE on 08.04.2011
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Volume V – Environmental Assessment Final Feasibility Study Dobrich 03/2011 Technical Assistance for Preparation of Integrated Water Measures in Plovdiv and Dobrich EuropeAid/124488/D/SV/BG Volume V Environmental Assessment Final Feasibility Study Dobrich - FINAL VERSION – PUBLISHED UPON APPROVAL BY PROJECT STEERING COMMITTEE ON 08.04.2011 in association with Kocks Consult GmbH Pecher Dahlem Plejades Pecher + Vassilev Final Feasibility Study Dobrich Volume V – Environmental assessment Table of Contents 1. Objectives of the investment project 2 2. Need for implementation of an investment project 7 3. Reconstruction, upgrade and extension of existing UWWTP Dobrich 17 3.1. Dimensioning parameters of the reconstruction, upgrade and extension of the existing UWWTP Dobrich. 17 3.2. The process flowchart of UWWTP Dobrich after Reconstruction and upgrade provides the necessary treatment effect and ensures the required parameters of treated wastewater. 20 4. Current environmental condition in the region. Impact of the investment project facilities on the environmental components and the factors, influencing it. 34 4.1. Ambient air 37 5. Features of the potential impact on the environment. 61 5.1. Impact on people and their health. 62 5.2. Impact on air quality. 62 5.3. Impact on waters. 63 5.4. Forecast of the potential impact on geological environment, existing buildings, other structures and environmental components 63 5.5. Impact on soil. Groundwater. 63 5.6. Impact on flora, fauna, Protected areas. 64 5.7. Impact on landscape 64 5.8. Impact of generated waste 64 5.9. Impact on sound pressure. 64 6. Measures that have to be included in the investment project to prevent, reduce or compensate for the significant impact on the environment. 66 7. Transboundary features of impact. 79 Y:\16 Final FS\Dobrich Final FS\Volume V EIA\English\Volume V - Environmental Assessment Dobrich EN\Volume V - Environmental Assessment Dobrich - EN.1.doc Page 1 Final Feasibility Study Dobrich Volume V – Environmental assessment 1. Objectives of the investment project The implementation of a modern integrated water cycle in Dobrich is one environmentally friendly project that will help improve the quality of life of the population of Dobrich and the quality of local environment. Тhe main objectives of the Feasibility Study for Dobrich are related to the main objective of the policy for waters, the protection of water resources. As per Directive 91/271/EEC, the measures are aimed at improving the quality of water resources. Funding under Operational Programme Environment 2007- 2013 in Stage I is necessary to ensure the quality of waste water discharged into water bodies to meet European requirements. This is achieved with integrated measures, related with management of the water cycle in urban areas: - Rehabilitation, reconstruction and extension of the water supply system and the facilities, associated with its functioning. Reduction of losses in the water supply network and securing the population with sufficient quantity of drinking water with good quality at reduced operating costs. Indirect contribution to the reduction of infiltration into the sewer system. - Rehabilitation and reconstruction of the sewer system and the facilities associated with its functioning. Collection of all wastewaters and bringing them to UWWTP Dobrich for treatment up to specified requirements. Not allowing direct discharge into the water bodies, so as not to pollute the waters of the water receiver. Reduction of infiltration thus securing also more efficient operation of UWWTP so as not to adversely affect the development of ecosystems and the development of biodiversity in the region respectively. Prevention of health risk to the population in the region. - Rehabilitation, reconstruction and upgrade of the existing UWWTP Dobrich, replacement of morally and physically obsolete equipment in some technological units and construction of new facilities. Achieving higher level of water treatment. Upgrade of the sludge management facility through commissioning modern equipment for anaerobic stabilization of the sludge generated in the treatment process and its subsequent drying. Suggestions for effective management of sludge from UWWTP. Ensuring parameters of treated water meeting the requirements of the permit for discharge into Y:\16 Final FS\Dobrich Final FS\Volume V EIA\English\Volume V - Environmental Assessment Dobrich EN\Volume V - Environmental Assessment Dobrich - EN.1.doc Page 2 Final Feasibility Study Dobrich Volume V – Environmental assessment Dobrichka river water body, the Dobrudzhanska River, a tributary of the Suha River. Improving the water quality and compliance with the regulatory requirements. Ensuring sustainable development of the aquatic ecosystem in the water body and achieving good imission status of waters. Raising the self- purification ability of the river in this section, respectively creating a positive effect of impact. - The designed process flowchart for the reconstruction and upgrade of the existing UWWTP Dobrich is modern, it meets the EU requirements and will secure wastewaters treated in it meet the individual emission limits, stipulated in the Permit for use of a surface water body for discharge of wastewater into surface water bodies, issued by the Black Sea River Basin Directorate, seated in Varna. The investment project provides: Main project priorities in Stage I (2011 - 2013): - Disconnection of the water supply system of Dobrich from the well fields of Shabla /Makedonka and Batovo/ and the closure of Bogdan. - Rehabilitation, reconstruction and extension of certain sections of the water supply network and associated facilities, within the regulation borders of Dobrich town in order to reduce the losses in the water supply network. Rehabilitation of approximately 77.2 km of water supply network. - Rehabilitation, reconstruction and extension of certain sections of the sewerage network and associated facilities within the regulation borders of Dobrich town, approximately 5.2 km, in order to achieve 100% connectivity of population to UWWTP. - Reconstruction, upgrade and extension of the existing UWWTP Dobrich, refitting and upgrade of some process units and equipment in the mechanical and biological treatment of wastewater and the sludge management facility. Reconstruction will be performed on the existing site in land plot № 000084 with an area of 99,679 dka, with permanent use of another industrial terrain, in the lands of the village of Vrachantsi, Dobrich Municipality, Dobrich district, owned by SLF in order to ensure treatment of all wastewater from the town of Dobrich up to the necessary requirements of the Discharge Permit. Neighboring properties are: pastures, water flow common lands, a local road and afforested areas. Y:\16 Final FS\Dobrich Final FS\Volume V EIA\English\Volume V - Environmental Assessment Dobrich EN\Volume V - Environmental Assessment Dobrich - EN.1.doc Page 3 Final Feasibility Study Dobrich Volume V – Environmental assessment Capacity of the existing UWWTP Dobrich - 120 000 PE, Q = 73,350 m3/d. BOD5 is 211 mg/l = 15,496 kg/d, 258 267 PE at 60 g/PE/d/ (at 54 g/PE/d./ 1983 standard 286 963 PE) Solid substances 252 mg/l = 18 507 kg/d. Design parameters of UWWTP Dobrich - Q = 24 000 m3/day, 112 000 PE by BOD5 (final stage in 2038) including pollution load generated by 83193 PE (74.3%) - population and 28807 PE (25.7%) from industrial enterprises. It is proposed to build new buildings and facilities on the existing site in land plot № 000084 for mechanical treatment and mechanical dewatering of stabilized sludge, new facilities for anaerobic sludge stabilization and biogas utilization, new facilities for effective sludge dewatering, refitting of some process units. No construction and/or change of the existing road infrastructure is foreseen for the implementation of IP. The removed humus layer and excavation soils will be stored temporarily within the bounds of the planned territory until completion of construction works and will be used for backfilling and landscaping of disturbed areas. Biodegradable and construction waste will be transported on routes designated by the Mayor of Dobrich Municipality in accordance with the organization implemented by the municipality to installations and facilities for further treatment. The industrial waste, generated by the company activities (sludge generated from previous activities of WWTP - Dobrich, screenings, waste from the grit chambers, dewatered stabilized sludge, sludge generated in the wastewater treatment process, anaerobically stabilized and mechanically dewatered sludge) and hazardous waste will be stored temporarily and separately, transferred and handed over to companies licensed under Art. 12 of the Waste Management Act (SG 86/2003 amm. and supl.); The implementation of the investment projects will not adversely affect human health and will not be associated with discomfort to environment and people in the area, nor create risk of accidents. All activities will take place within the intended area, which is already anthropogenically influenced. Y:\16 Final FS\Dobrich Final FS\Volume V EIA\English\Volume V - Environmental Assessment Dobrich EN\Volume V - Environmental Assessment Dobrich - EN.1.doc Page 4 Final Feasibility Study Dobrich Volume V – Environmental assessment The facilities of the water and sewerage systems are a major public and environmental component of the urban and industrial environment. Water and sewerage networks and associated facilities,