Sukošan – Bibinje Wastewater Treatment Plant and Submarine Outfall
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E1933 INSTITUT GRAĐEVINARSTVA HRVATSKE d.d. v 4 CIVIL ENGINEERING INSTITUTE OF CROATIA POSLOVNI CENTAR SPLIT 21 000 Split, Matice hrvatske 15 Public Disclosure Authorized CLIENT: HRVATSKE VODE ENVIRONMENTAL IMPACT STUDY – EXECUTIVE SUMMARY Public Disclosure Authorized SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL Public Disclosure Authorized Split, July 2008. REVISION B Public Disclosure Authorized INSTITUT GRAĐEVINARSTVA HRVATSKE d.d. CIVIL ENGINEERING INSTITUTE OF CROATIA POSLOVNI CENTAR SPLIT 21 000 SPLIT, Matice hrvatske 15 CLIENT: HRVATSKE VODE Ulica grada Vukovara 220, 10000 Zagreb PROJECT NAME: SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL PROJECT TYPE: ENVIRONMENTAL IMPACT STUDY- EXECUTIVE SUMMARY PROJECT No.: 38 00 0125/Sukošan PROJECT MANAGER: ANITA ERDELEZ, M.Sc.Civ.Eng. EXECUTIVE DIRECTOR IGH D.D.: ANDRINO PETKOVIĆ, B.Sc.Civ.Eng. DEPUTY GENERAL MANAGER IGH D.D. MANAGER OF REGIONAL UNIT IN SPLIT: ŽARKO DEŠKOVIĆ, B.Sc.Civ.Eng. PLACE AND DATE: Split, July 2008. COPY No. 1 COPY No. , B.Sc.Civ.Eng. B.Sc.Civ.Eng. , ć Internal Revision InternalRevision AlbertPavlovi REVISION B INSTITUT GRAĐEVINARSTVA HRVATSKE d.d. CIVIL ENGINEERING INSTITUTE OF CROATIA POSLOVNI CENTAR SPLIT 21 000 SPLIT, Matice hrvatske 15 PARTICIPANTS IN THE STUDY: Editing Anita Erdelez, M.Sc.Civ.Eng. Institut građevinarstva Hrvatske - PC Split Milena Lončar, B.Sc.Civ.Eng. Institut građevinarstva Hrvatske - PC Split * * * Executive Summary Prof. Duško Marušić PhD Vedran Petrov, B.Sc.Civ.Eng. Ivo Rožić, B.Sc.Mech.Eng. Freelance co-authors Environmental Impact Study – Executive Summary Civil Engineering Institute of Croatia Regional Unit in Split PC Split TABLE OF CONTENTS I GENERAL 1. Permit for Performing Professional Environmental Activities II ENVIRONMENTAL IMPACT STUDY Section A: Executive summary 5 Section B: Policy, legal and administrative framework 5 Section C: Project description 7 Section D: Baseline data 9 Section E: Environmental impacts 15 Section F: Analysis of alternatives 17 Section G: Mitigation plan 18 Section H: Environmental management and training 21 Section I: Environmental monitoring plan 21 Section J: Appendices 23 SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL Project No.: 38000125/Sukosan Executive summary_Sukosan-Bibinje.doc Page 4 of 36 Environmental Impact Study – Executive Summary Civil Engineering Institute of Croatia Regional Unit in Split PC Split A. EXECUTIVE SUMMARY Nowadays, there is no sewerage network in the area of Bibinje and Sukošan settlements (except for the wastewater disposal and treatment system in the „Dalmacija“ marina). Wastewater disposal comprises individual cess-polls that are, in general, permeable, and direct outlets into the sea. Thus, there are no prerequisites for fulfillment of ever growing sanitary-health criteria. Wastewater disposal and treatment system in the „Dalmacija“ marina has been built as a part of marina in 1989. The system has been designed and constructed to receive a portion of wastewater from the Bibinje and Sukošan settlements, treat them and ultimately dispose. In 2001, damaged wastewater treatment plant (further referred to as the WWTP) has been rehabilitated and put in operation for the first time. Prior to its rehabilitation, wastewater has been pumped from the pumping station wet well into the submarine outfall and discharged directly into the sea. The existing system consists of gravity mains, five pumping stations with rising mains, out of which PS Marina is pumping wastewater to the wastewater treatment plant situated between the railroad and Jadranska magistrala (Adriatic tourist road) at the Čukovice site. Treated effluent is transported by gravity from the WWTP into submarine outfall onshore section (HDPE Φ 355 mm, 1.400 m length) and submarine outfall (HDPE Φ 355 mm, 877 m length) into the Zadar channel at 28 m depth. Out of impacts during construction, impact on natural and cultural heritage shall be mentioned since alignment sections are crossing some cultural-historical localities; however, it will be solved by continuous supervision by an archeologist from the competent authority. In public sewerage system operation phase, positive effect of collected wastewater treatment can be expected in the form of improved sea quality, in particular in the coastal zone. Potential negative effects could be disturbances to local population due to operation of system facilities (e.g. noise, odors, insects etc.), although to the lesser extent. They can be eliminated, fast and efficiently, by adequate mitigation measures. Monitoring will be carried out to control the recipient state (submarine outfall marine environment). If necessary, interventions shall be made in the form of higher treatment level. B. POLICY, LEGAL AND ADMINISTRATIVE FRAMEWORK 1. Project compliance with the international obligations of the Republic of Croatia Water resources management, arisen from international obligations of the Republic of Croatia, comprises improvement, conservation and protection of fresh(water) and coastal sea. The Republic of Croatia has ratified the conventions and protocols on water protection as bilateral treaties on cooperation in water management. As a signatory country i.e. contracting party to the Convention for the Protection of the Mediterranean Sea against Pollution and the Protocol for the Protection of the Mediterranean Sea against Pollution from Land-Based Sources (Official Gazette No. 1/90, International Treaties,), the Republic of Croatia shall take all appropriate measures to prevent, abate, combat and control pollution of the Mediterranean Sea Area caused by discharges from rivers, coastal establishments or outfalls, or emanating from any other land-based sources within its territories SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL Project No.: 38000125/Sukosan Executive summary_Sukosan-Bibinje.doc Page 5 of 36 Environmental Impact Study – Executive Summary Civil Engineering Institute of Croatia Regional Unit in Split PC Split 2. Client's environment protection policy Environmental protection legal framework has been based on the following legal documents: a) Physical planning documents, b) Legislation in the field of environment protection c) Extract from physical planning documents Physical plan of the Zadar County (Official Gazette of the Zadar County No. 2/01, 6/04 and 2/05) The document emphasizes the need to solve the problem of wastewater collection and disposal in all settlements of the County coastal region. Separate-type sewerage system and effluent discharge after adequate treatment via long submarine outfalls into marine recipient are the basic prerequisites set forth for a conceptual design. Physical plan of the Sukošan Municipality (Official Gazette of the Zadar County No. 6/04) Phased solution of wastewater disposal problem is proposed by connection of the Sukošan settlement to the existing separate-type disposal system of the Zlatna Luka marina, until common sewerage system for the entire area is constructed. Physical plan of the Bibinje Municipality - proposal Physical plan foresees adequate wastewater collection and treatment to the level that will not deteriorate coastal sea quality and planned use. Separate-type collection system is proposed. a) Legislation in the field of environment protection Effluent discharge into a recipient (sea) has been regulated by the following acts and regulations: 1 National Water Protection Master Plan (NN - Official Gazette, further referred to as OG, No 8/99) – water classification. 2 Regulations on Limit Values of Parameters, Dangerous and Other Substances in Wastewater (OG No. 40/99, 6/01, 14/01) - treatment levels, effluent standard parameters, maximum concentrations of parameters in effluent prior to discharge into a natural recipient. 3 Directive on Bathing Water Quality Standards (OG No. 33/96) - assessment of sea water quality on marine beaches. Regulations and directives are based on the Water Act (OG No. 107/95, 105/05) and elaborated in compliance with the EU standards i.e. Urban Waste Water Treatment Directive 91/271/EEC, Bathing Water Directive 76/160/EEC. To conclude, total coliforms shall be under 500/100 ml in bathing water. Apart from the aforementioned legislation related to seawater quality, applied acts, ordinances and regulations are listed hereinafter: 1. Ordinance on Environmental Impact Assessment (OG No. 59/00) 2. Environmental Protection Act (OG No. 82/94, 128/99) 3. Nature Conservation Act (OG No. 70/05) 4. Water Act (OG No. 107/95, 150/05) 5. Act on Water Management Financing (OG No. 107/95, 150/05) 6. Utility Services Act (OG No. 26/03, 82/04, 110/04, 178/04) 7. Waste Act (OG No. 178/04) 8. Noise Protection Acr (OG No. 20/03) 9. Air Protection Act (OG No. 178/04) 10. National Water Protection Master Plan (OG No. 8/99) 11. Regulation on Limit Values of Pollutants in Ambient Air (OG No. 133/05) 12. Directive on Water Classification (OG No. 77/98) SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL Project No.: 38000125/Sukosan Executive summary_Sukosan-Bibinje.doc Page 6 of 36 Environmental Impact Study – Executive Summary Civil Engineering Institute of Croatia Regional Unit in Split PC Split 13. Directive on Dangerous Substances in Freshwater and Coastal Sea Water (OG No. 78/98) 14. Directive on Bathing Water Quality Standards (OG No. 33/96) 15. Ordinance on Agricultural Land Protection against Pollution (OG No. 15/92) 16. Regulations on Noise Limit Values in Work and Domestic Environment