Annex IV NON TEHNICAL SUMMARIES
Total Page:16
File Type:pdf, Size:1020Kb
Rehabilitation and modernization of water supply and sewerage CF Application system in Constanta and Ialomita region Annex IV NON TEHNICAL SUMMARIES TAHAL CONSULTING ENGINEERS LTD MUNICIPAL SERVICES PROJECT - CONSULTING SERVICES FOR BRAILA, VRANCEA, ILFOV, IALOMITA AND CONSTANTA COUNTIES ENVIRONMENTAL IMPACT ASSESSMENT STUDY REPORT „REHABILITATION AND MODERNIZATION OF WATER AND WASTEWATER SUPPLY SYSTEM IN CONSTANTA –IALOMITA REGION” NON-TECHNICAL SUMMARY CONSTANTA AGGLOMERATION Evaluators of the Environmental Impact Assessment Study Report: SC BIOSYS GROUP SRL Ecology Counsellor Gabriel BANICA Main Evaluator Expert Mihaela ISPAS Main Evaluator Expert Marina DINU TAHAL CONSULTING ENGINEERS LTD Non-technical summary of Environmental Impact Assessment Study Report for „Rehabilitation and modernization of water and wastewater supply system in Constanta – Ialomita region–Constanta agglomeration” CONTENT 1. PROJECT DESCRIPTION...............................................................................................................4 2. ENVIRONMENTAL IMPACT ASSESSMENT..............................................................................6 2.1. Environmental factor WATER.....................................................................................................6 2.1.1. Water pollution sources and pollutions emissions........................................................................7 2.1.2. Water protection measures............................................................................................................8 2.2. Environmental factor AIR ............................................................................................................9 2.2.1. Generated sources and pollutants .................................................................................................9 2.2.2. Impact on air.................................................................................................................................9 2.2.3. Impact decreasing measures .......................................................................................................10 2.3. Environmental factor SOIL ........................................................................................................10 2.3.1. Soil and underground pollution sources .....................................................................................10 2.3.2. Impact on soil and underground .................................................................................................11 2.3.3. Soil and underground protection measurements.........................................................................12 2.4. GEOLOGY OF THE UNDERGROUND AND GEOMORPHOLOGY ...................................14 2.5. BIODIVERSITY ........................................................................................................................14 2.5.1. General information....................................................................................................................14 2.5.2. Pollution sources.........................................................................................................................14 2.5.3. The foreseen impact over the biodiversity..................................................................................14 2.5.4. Impact decrease measures...........................................................................................................15 2.6. LANDSCAPE.............................................................................................................................16 2.7. SOCIAL AND ECONOMIC ENVIRONMENT........................................................................16 2.8. CULTURAL AND ETHNIC CONDITIONS, CULTURAL PATRIMONY ............................16 3. ALTERNATIVES ANALYSIS......................................................................................................17 3.1. Alternative 0 - Maintaining the present situation .......................................................................17 3.2. OPTIONS FOR THE WATER SUPPLY SYSTEM ..................................................................17 3.3. OPTIONS FOR SEWERAGE....................................................................................................18 3.4. Sites alternatives.........................................................................................................................18 3.5. Designed alternatives..................................................................................................................19 3.6. Alternatives regarding the execution method.............................................................................19 4. MONITORING...............................................................................................................................19 5. RISK SITUATIONS.......................................................................................................................20 6. ACCIDENTS PREVENTION MEASURES..................................................................................20 7. NECESSARY WORKS TO REHABILITATE THE TEMPORARY UTILISED SURFACES AND ECOLOGICAL REBUILDING OF PERIPHERAL AREAS AFFECTED BY WORKS ............21 8. CONCLUSIONS AND RECOMMENDATIONS..........................................................................22 TAHAL CONSULTING ENGINEERS LTD 3 Non-technical summary of Environmental Impact Assessment Study Report for „Rehabilitation and modernization of water and wastewater supply system in Constanta – Ialomita region–Constanta agglomeration” 1. PROJECT DESCRIPTION The purpose of this investment is to rehabilitate and modernise the sewerage network, as well as the Wastewater Treatment Plant in Constanta agglomeration. In accordance with the Town-planning Permit no. 89/20.02.2009, the construction site is located in the administrative area of Constanta City. The site is public domain of local interest administrated by territorial administrative units, public domain of the county administrated by Constanta County Council and state public domain under the administration of NA Romanian Waters (Apele Romane) – DADL. The foreseen works are located in Constanta City, including Mamaia resort and Palazu Mare. The county administrative territory is crossed by DN2A, DN3, DN39 national roads and by the European Road E60. 1.1. Project site location The locality has the following neighbours: − in the West part Valu lui Traian locality − in the East part, Black Sea coastline − in the South-West and South Cump ăna locality and Lazu and Agigea localities − in the North part, with Mamaia Village, Siutghiol Lake Fig.1 Works location TAHAL CONSULTING ENGINEERS LTD 4 Non-technical summary of Environmental Impact Assessment Study Report for „Rehabilitation and modernization of water and wastewater supply system in Constanta – Ialomita region–Constanta agglomeration” The project includes the following works: - Optimising the technologic flux from Palas Water Treatment Plant– Constanta - Introducing a tertiary stage at Constanta South WWTP - Works to reduce odours at Constanta North WWTP - Resizing and extension of water supply distribution network and domestic sewerage network in Constanta agglomeration - Setting up a wastewater Pumping stations Optimising the technological flux from Palas Water Treatment Plant– Constanta Palas Constanta Water Treatment Plant has the source in Navodari Poarta Alba Channel, with a water catchment located near Galesu locality. Here is also a Chlorination Station that accomplishes a pre-chlorination of the raw water, before pumping it to Palas. Through Danube – Black Sea Channel water runs slow because of the sluice gates in such manner that the Channel works like a huge settlement tank with intermittent functioning, with two consequences: - suspensions are reduced massive, the cached water being with a variable turbidity between 1.6 and 5.5 degrees; - the appearance of taste and odour characteristic for the swamp water. These new elements, supplied by the treatment plant operation, imposed a modification of the present operational technological scheme, as: - renouncing to the existing suspensional settlements tanks, that have no objective anymore cause of the massive suspensions reduction; - introducing into the scheme some granular activated coal, as finishing stage, having as main objective the improving of the water organoleptical qualities. Introducing a tertiary stage at Constanta South WWTP Constanta agglomeration represents a tourism area, by maximum importance which needs special hygiene conditions for sand and sea water used for bathing, even in discharging areas in Black Sea of wastewaters after their treatment. The existing Constanta South WWTP includes mechanical stage, biological and sludge treatment stage. It is necessary to upgrade the Wastewater treatment plant to ensure the tertiary treatment, in order to follow the admitted limits for wastewater discharges into the natural body waters, according to NTPA 001/2005. By introducing the tertiary stage will be fulfil the following: - Assumed environmental commitments by Romania through ACCESSION TREATY TO THE EUROPEAN UNION, chapter 22 – Environment Protection. - Staging Program included into the WATER MANAGEMENT AUTHORISATION no. 221/November 2008. Maintaining the current situation will lead to environment deterioration by infiltrations and uncontrolled discharging. The solution to maintain the current situation can’t be accepted for a balanced development of the area because by