SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE ...documents.worldbank.org/curated/en/370271468032390580/pdf/E19330… · client: hrvatske vode ulica grada vukovara

CLIENT: HRVATSKE VODE

ENVIRONMENTAL IMPACT STUDY – EXECUTIVE SUMMARY

SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL

Split, July 2008.

INSTITUT GRAĐEVINARSTVA HRVATSKE d.d.

CIVIL ENGINEERING INSTITUTE OF CROATIA

POSLOVNI CENTAR SPLIT 21 000 Split, Matice hrvatske 15

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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 PETKOVI Ć, B.Sc.Civ.Eng.

DEPUTY GENERAL MANAGER IGH D.D. MANAGER OF REGIONAL UNIT IN SPLIT: ŽARKO DEŠKOVI Ć, B.Sc.Civ.Eng.

PLACE AND DATE: Split, July 2008.

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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



POSLOVNI CENTAR SPLIT 21 000 SPLIT, Matice hrvatske 15

Environmental Impact Study – Executive Summary Civil Engineering Institute of Croatia Regional Unit in Split PC Split

SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE OUTFALL Project No.: 38000125/Sukosan Executive summary_Sukosan-Bibinje.doc Page 4 of 36

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



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



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)



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 (OG No. 37/90)

17. Regulations of Sanitary Quality of Drinking Water (OG No. 46/94)

18. Ordinance on Waste Types (OG No. 27/96)

19. Ordinance on Requirements for Handling Waste (OG No. 123/97)

20. Convention for the Protection of the Mediterranean Sea against Pollution (OG - International Treaties 1/92)

21. Protocol for the Protection of the Mediterranean Sea against Pollution from Land-Based Sources (OG – International Treaties 1/92)

22. Council Directive of 2l May 1991 concerning urban waste water treatment, O.J. NoL. 135/40, 1991. (91/271 EEC)

23. Spatial Planning Strategy of the Republic of Croatia (1999.) Republic of Croatia, Ministry of physical planning, construction and housing, Zagreb

24. Physical plan of the Zadar County (Official Gazette of the Zadar County No. 2/01, 6/04 and 2/05)

25. Physical plan of the Sukošan Municipality (Official Gazette of the Zadar County No. 6/04)

26. Physical plan of the Bibinje Municipality - proposal

27. Spatial Planning Program of the Republic of Croatia (50/06)

C. PROJECT DESCRIPTION

1. Wastewater treatment plant site

Wastewater treatment plant is planned in the Čukovice area. That has been selected in order to satisfy hydraulic parameters requirements (minimum pumping, although at relatively high elevation, to enable discharge by gravity of treated effluent through the submarine outfall), but also due to aesthetic reasons (to be “hidden” from the view).

2. Basic concept

Basic concept of the Project comprises the existing WWTP of the «Dalmacija» marina that will receive all wastewater from Bibinje and Sukošan, and the submarine outfall of the marina to discharge the treated effluent. Wastewater treatment plant will be replaced by the new one of greater capacity. This Project comprises:

- within the Bibinje subsystem: the entire Bibinje settlement, including its northern zone (Lonići area). Three pumping stations and pipelines with diameters from Φ 100 mm to Φ 250 mm are foreseen.

- within the Sukošan subsystem: the entire Sukošan settlement, while separate sewerage system is planned for the other settlements within the municipality. It is planned to connect the central zone of Sukošan via 2 pumping stations and the appurtenant pipelines made of c-HDPE pipes with diameters from Φ 100 mm to Φ 300 mm. The remaining part of the subsystem will be connected to the «Čukovice» pumping station via «Makarska» and «Tratica» pumping stations and a sewer.



3. Input data and sizing

Wastewater characteristics

Bibinje and Sukošan wastewater composition has never been tested; thus those data were estimated based on the data from literature. For Middle-European conditions, typical loads for domestic wastewater can be estimated at: five-day biochemical oxygen demand BOD5 (20°C) 60 g O2/p.e./d chemical oxygen demand CODCr 120 g O2/p.e./d total suspended solids 70 g/p.e./d total nitrogen 11 g/p.e./d total phosphorus 2,5 g/p.e./d

Loads

Planned design horizon is the year 2020. Number of public sewerage system users is given in Table C.1.

The maximum population equivalent relative for sewerage system and WWTP sizing is 20 180 p.e. (in summer). The entire load in winter i.e. 8 080 p.e. refers to permanent residents only.

Table C.1. Number of public sewerage system users

Subsystem Users Forecast

Population 4840

Private accommodation, holiday houses, holiday resorts and camps

3500 Bibinje

Total 8340

Population 3240

Private accommodation, holiday houses, holiday resorts and camps

3500 Sukošan

Total 6740

Marina «Dalmacija»

Total 5100

Total 20180

Production plants within the area of interest neither exist nor are planned. Small-scale polluters (bakeries, small production plants) will be connected to the public sewerage system only when they are to meet the domestic wastewater standards. Since those are small wastewater quantities; to this end, the estimates for the total load to the WWTP have included these wastes.

Specific flow per system user has been adopted at: qotp,stan = 150 l/inh./day. Besides, infiltration i.e. waters that are not been considered wastewater based on their characteristics, but have to be taken into account for purposes of the assessment of sewer capacity and pumping station and WWTP operation, are also being taken into account in calculations. For sewerage system sizing purposes, infiltration shall be estimated at 30% of daily flow.

Sewerage system description

Wastewater disposal in Bibinje-Sukošan settlements has already been set forth in the „ Study of water protection in the Zadar County“ (Hidroprojekt-ing d.o.o. Zagreb and Hidroing d.o.o. Osijek, 2005.). That document complies with the Physical Plan of the Zadar County and Physical Plans of Bibinje and Sukošan municipalities.



Separate-type collection system has been selected. Where feasible, wastewater will be transported by gravity, otherwise, it will be pumped. In that sense, both pressure and vacuum systems have been considered. Pressure system is the preferred one because of numerous vacuum system flaws (vacuum station shall be regularly maintained, spatial requirements for house connection shaft, vacuum station site, in case of house connection disfunction wastewater may overflow).

Activated sludge biological treatment has been selected since it produces effluent of satisfactory quality. It can also easily be extended.

The project complies with the relevant physical planning documents is force.

Wastewater treatment plant

Wastewater treatment plants capacities are 20 180 p.e. in summer and 8 080 p.e. in winter. It is a secondary treatment (II) plant comprising:

• automatic coarse and fine screens complete with the screenings conveyer and compactor • aerated grease/oils removal • activated sludge biological treatment

There are two mechanical treatment lines. Thus, only one is used in winter and both in summer period.

Submarine outfall

Submarine outfall is 800 m long, Φ 400 mm diameter, HDPE.

D. BASELINE DATA

1. Hydrographic data

Current-gauging station was moored on June 17th 2006, and lifted from the sea on July 22nd 2006. Hydrographic survey, geological investigations and sampling were carried out from July 7th to 8th 2006. Base surveying line, defined based on the consultations between the Investor and the field surveying team, has been obtained after comprehensive bathymetry researches in the area of interest. Length of the submarine outfall surveying line in Sukošani settlement was 2300 m, measured from the onshore point (pipeline start point) to the end of the submarine pipeline. Submarine relief of the planned submarine outfall alignment, extending from the mainland to the middle of Zadar channel can be divided in two sections: 1. The first section refers to the alignment from the onshore point. Sea is shallow with the variable depth from 2 m to about 8 m. In this section, seabed is uneven and built of flysch. 2. In the second section, which extends form the depth of about 8 m on, seabed plunges to 30,5 m depth i.e. the end of the planned alignment. At the section start plunging inclination is steep to become flat and covered by silt. In shallow section (about middle of the alignment) sand deposits can be observed. Along this alignment section magnetometric detection did not detect any ferromagnetic objects on the seabed or directly underneath it.

2. Geology

The oldest stratigraphic members in the broader area are well-bedded limestones that are splitting in thin plates in some zones. Lower Eocene foraminiferal limestones overlay them in transgressive contact. Foraminiferal limestone is a common name for miliolidic, alveolinic and nummulitic limestones. They are yellow-brown, of irregular shell-shaped failure. Then follow the strata consisted of sandstone, marl and flysch, which are in a continuous contact with foraminiferal limestones and cover large zones in the broader area.



Tectonic structure of the broader research area is represented by numerous folds of Dinaric strike. There is a series of anticlines and synclines characterized by different layer dips, secondary folding and axles sinking. Researched area belongs to the Ravni Kotari tectonic unit. Layer dip is relatively gentle in the broader area with the exception of steep one at the outfall origin. Relatively regular sinantycline structure of Ravni Kotar is disturbed by reverse faults in coastal zone. They strike parallel with the cost and islands (NW-SE). The area of interest is situated in a seismic zone where earthquake with intensity Imax 8 grades of MCS Scale can be expected. The aforementioned value refers to flysch only. Coastal zone of the researched area is built of clastic strata (flysch). Those strata have partial bedded structure, while due to folding, spatial position of beddings is different – they are mainly steeply inclined towards the northeast at 50°. Marine sediments (close to the shore) mainly consist of loose shelly sand. Particle size decreases while silty component percentage increases with depth. Deeper parts of the seabed, recorded by geological-structural sonar, are covered by sandy silt. The analyses of the outfall alignment recordings point to the following: except for the section from chainage Kp 0.000 to 0.300 where bedrock (flysch) occurs at the seabed or extends from it, the remaining part of the alignment is very favorable in terms of lying of submarine outfall elements.

3. Basic climate characteristics

Annual air temperature range chart is shaped as a simple wave with one maximum (23.9 °C in July) and one minimum (6.1 °C in January). The absolute maximum and minimum air temperatures are 35.7 °C and -9.9 °C, respectively. Average annual precipitation in Zadar is 949 mm, as had been measured at the Zadar meteorological station in the period 1949-1970. On an average, July is month with the lowest precipitation (39 mm), while November is the month with the highest one (145 mm). Most of the annual precipitation falls in a cold part of the year while it is relatively low in a warm part of the year. Dry summers are also common. Average number of days with precipitation in a month is 14 in December (maximum) and 6 in August (minimum). Maximum daily rainfall of 209 mm has been recorded in October. In the area of Zadar, the average annual range of relative humidity is inverse to the average annual temperature range with the minimum values in a warm part of the year (68% in July). In the area of interest, relative humidity has its maximum in a part of the day and year when cold. Average annual relative humidity is about 72%. In terms of speed and direction, characteristic winds on the eastern Adriatic coast are bora-bura (NNE, NE and ENE wind) and sirocco-jugo (ESE, SE and SSE wind) in winter, and mistral-maestral (NW wind) in summer. Average duration of bora and sirocco is 2-4 days, although sometimes both winds could blow more than a week. Long calm is also frequent in summer. Dominant winds in terms of frequency and average wind force are SE, NW and NE winds. An important information is that the number of days with the wind of 6 Bf or stronger is 17 days on the average, while there is 1 day with the wind of 8 Bf or stronger.

4. Oceanographic measurements

Oceanographic measurements were carried out in the period from June 17th to July 22nd 2006. Oceanographic measurements comprised measurements of sea currents at two gauging stations, measurements of vertical profiles of temperature, salinity and density at 9 stations as well as seawater sampling at 3 stations, in order to determine nutrient concentrations, pH-values and dissolved oxygen (% of saturation). The study also analyzed the data on sea levels registered at the Zadar mareographic station, which is being representative for the researched area, Vertical profiles of sea temperature and density show that there was intense water column stratification in spring. Temperatures at the surface ranged between 20.2°C and 21.1°C, while at the deepest stations temperatures of about 14.9 oC were recorded at the bottom.



Salinity by the surface ranged between 37.1 and 37.3, while the maximum values were recorded in the bottom layer of the deepest stations (about 37.8). Surface salinity ranged between 1026.1 and 1026.3 kg/m3, while values about 1028.13 kg/m3 were recorded at the deepest stations in the bottom layer. Sea temperature, salinity and density were measured on July 22nd 2006. Surface temperatures ranged between 23.6°C and 24.4°C. Sea temperatures about 15.2°C were recorded in the deepest layers (measurement depths up to 25 m). Surface salinity ranged from 37.6 to 37.8, while values 38.0 were recorded at the bottom of the deepest stations. Distinct picnocline has been observed at about 9-10 m depths. Surface density ranged between 1025.5 and 1025.9 kg/m3. Bottom layer densities of about 1028.25 kg/m3 were recorded at the deepest stations. Between the two measurements (June 17th and July 22nd 2006 at both stations) there was intense warming up of the surface layer and thermocline i.e. picnocline consolidation, as particularly observable to about 10 m depth. Maximum increase in temperature has been recorded by the surface (an increase from 2.8°C to 3.5°C). Changes in temperature were negligible in the bottom layer. The greatest changes in salinity were recorded in the surface layer to the depth of about 9-10 m, where salinity increased about 0.5. In the bottom layer, increase in salinity was about 0.1. Changes in temperature distribution also reflected on density distribution. Thus, in the surface layer, a decrease in density about 0.5-0.7 kg/m3 was recorded because of surface layer warming up. In the bottom layer, an increase in salinity also cause an increase in density of about 0.2 kg/m3.

5. Long-period oscillations of sea level

In the area of Sukošan and Bibinje, average daily oscillation of sea level (average amplitudes of the tides) is 29,5 cm. Extreme sea level oscillations were recorded at the Zadar mareographic station in the period 1991-2004. Total range of sea level oscillations is 147 cm.

6. Sea currents

Sea current measurements in the aquatic environment of the submarine outfall of the Sukošan-Bibinje public sewerage system have been carried out in the period from June 17th to July 22st 2006. There were two current-measurement stations. Maximum current velocities recorded at the station positioned at the submarine outfall alignment at about 900 offshore distance were 28 cm/s and 16 cm/s in the surface layer (4 m) and bottom layer (22 m), respectively. Average current velocities were 5.8 cm/s (4 m) and 2.6 cm/s (22 m). N (19.8%) and SE (30%) sea currents prevail in the surface layer, while N (28%), S (19.4%) and NW (19,8%) prevail in the bottom one. Maximum current velocities recorded at the second station (positioned at the submarine outfall alignment, about 1300 m offshore distance) were 32 cm/s and 16 cm/s in the surface layer (2 m) and bottom layer (25 m), respectively. Average current velocities were 7.1 cm/s (2 m) and 4.6 cm/s (25 m). S (13.2%), SE (37%) and NW (16.5%) sea currents prevail in the surface layer, while NW (22%), SE (22%) and N (14.2%) prevail in the bottom one. In the bottom layer, about 38% sea currents at the first station and about 30% at the second one were directed onshore. In the surface layer, about 33% sea currents at the first station and about 26% at the second one were directed onshore. Depths from the surface to the seabed were approximately the same at both stations (26 and 28 m).

7. Wind-generated surface waves

Although the Zadar channel is considered an enclosed marine zone of limited fetch, instrumental measurements and visual observations of surface waves elements from ships, show that in the researched area, waves of respectable dimensions can be generated by violate storms of long fetches (SE), (NW) and (NE). There are 3 prevailing winds in terms of surface wave generation:

- sirocco (jugo), SE direction, fetch length about 15 M



- bora (bura), NE direction, fetch length under 6 M - mistral (maestral), W direction, fetch length about 40 M

Since there were no targeted recordings of wave-generated surface waves in the area of Zadar channel, recording results in the area of south Kvarnerić (March/April 1986) by DATAWELL wave motion sensor will be presented. Maximum wave generated by sirocco was recorded during synoptic disturbance on March 24th – 25th 1986. Its height was 3,3 m for 20 M fetch. Maximum wave generated by bora was recorded on March 22nd – 23rd 1986. Its height was 2,1 m for 5 M fetch. It can be concluded that in the broader coastal sea of Sukošan and Bibinje, maximum wave heights up to 2.5 m can be recorded in fall-winter period, in situations with sirocco. Similar size waves can also be recorded in summer during NW wind.

8. Wave climate

The data on wave velocities and directions have been adopted from the study by Kraljev, Gajić-Čapka in 1995; based on continuous monitoring at the Zadar gauging station (1961 - 1990). The results of wave intensity and directions recordings at the Zadar gauging station in the period 1995- 2002 have been adopted from the Study on Wind and Wave Climate in front of Zadar – Gaženica Port, Hydroexpert, Zagreb, 2005; as an extension of the monitoring period from the study by Kraljev, Gajić-Čapka, 1995. Based on recorded wind intensities and directions at the Zadar gauging station a long-term wind forecast has been obtained for recurrence periods PP = 0,5 ; 1 ; 2 ; 5 ; 10 ; 20 ; 50 and 100 years. Apart from the aforementioned maps, nautical charts by the State Hydrographic Institute (Hrvatski hidrografski institut) were also used to determine the effective fetch. The strongest registered winds blow in spring as SE Gale. The annual frequency of bora is about 8,5%, mostly in winter. Southeast (SE) winds prevail with 41%, while frequencies of interesting winds blowing from open sea are the following: S about 7,7%, SW 11,7% and W 4,2%, all under 7 Bf. There are 25 days a year with Strong Breeze (6/4 Bf), and up to 2 days with Gale (≥ 8 Bf). Wind-wave analysis gave an overview of wind-wave climate of the area of interest based on which the impact of dynamic forces of submarine outfall pipes due to wind generated gravity waves has been assessed. The analysis of dynamic forces has been carried out for critical position where submarine outfall pipe will be the most exposed to such action i.e. at the transition from the closed trench to the pipe laid on the seabed. At the analyzed depth of 10 m, pipeline dynamic load due to surface waves with the adopted wave parameters HS(load) = 4 m and LS(load) = 56,2 m has a horizontal component that shifts its direction (left and right) although even at the maximum intensity it amounts 60% of the vertical component. Likewise, vertical force component mainly comprises static buoyancy while dynamic buoyancy, if pipe is shifted from the seabed, participates with only about 15% of total load in vertical direction.

9. Seawater transparency and color

Seawater transparency and color were measured on June 17th and July 22nd 2006. In the middle of May, transparency ranged between 17 and 22 m. Somewhat higher transparency has been registered in mid-June (up to 24 m). Color was equivalent to the III degrees of the Forell’s scale (light blue). It points to high seawater clarity in the research area.

10. Dissolved oxygen, nutrients and pH

Measurements and sampling have been carried out at OC-1, ASS-1 and ASS-2 gauging stations on June 17th and July 22nd 2006. On June 17th, dissolved oxygen (% of saturation) ranged between 96.57% at station ASS-2 (0 m) and 100.06% at the station OC-1 (0 m). On July 22nd, recorded values ranged between 98.16% at the station ASS-1 (23 m) and 102.87% at the station ASS-1 (10 m). pH values recorded in June and July



ranged between 8.25 and 8.27 at all stations. On June 17th and July 22nd , nutrient concentrations recorded at the stations OC-1, ASS-1 and ASS-2 were within the limits that are regarded as not increased. At all stations (OC-1, ASS-1 and ASS-2), concentrations of nitrites (NO2) and orthophosphates were smaller than 0.05 mmol/m3 for both measurements. Concentrations of nitrates (NO3) did not exceed 2 mmol/m3, while ammonia concentrations (NH4) were about 1.5 mmol/m3 at all stations. Orthosilicone concentrations (SiO4) were low and did not exceed 1 mmol/m3. Nutrient concentrations and oxygen saturation point that there were no antropogeneous impacts at the researched alignment.

11. Numerical analysis of faecal coliforms spreading

Numerical analysis has been carried out to determine the impact of the Nin-Privlaka submarine outfall on the surrounding aquatic environment in terms of faecal coliforms concentrations. The analysis was carried out for two submarine outfall lengths 877m and 1300 m. The analysis of faecal coliform concentrations over a spatial domain comprised by the numerical model has been carried out in full spatial variability of hydraulic parameters (depth, roughness, effluent discharge/velocity/direction at the outfall, dispersion) with the faecal coliform decay T90 = 4h. The 2D numerical model MIKE 21 (DHI-2005) has been used in the analysis. Bases for this study were the following studies: «Conceptual design of the Bibinje-Sukošan sewerage system» (elaborated by Hidroprojekt-Ing in 2006) and «The results of research works at the submarine outfall alignment of the Bibinje-Sukošan sewerage system», HHI, August, 2006 (discharge at the submarine outfall diffuser). Based on the results of carried out numerical analyses, the following is concluded: - At 300 m offshore distance, faecal coliform concentrations of 100 FC/ 100ml have not been

exceeded once throughout the researched period in non-stationary numerical tests. The results of non-stationary tests can be regarded relevant for the assessment of marine environment condition.

- numerical tests showed that at submarine outfall length Lispusta=880m, the maximum concentration of faecal coliforms 65 FC/100ml occurs at 300 m offshore distance, thus satisfying the requirements set forth in the Environment protection Act (OG No. 82/94, 128/99)

- numerical tests, but also the analyses of recorded current velocities and directions at ASS-1 and ASS-2 measuring points, showed that submarine outfall extension to the length Lispusta = 1300 m i.e. position of ASS-2 measuring point would cause significant decrease in faecal coliform concentrations. In that case, maximum concentrations would be under 5 FC/100ml. Thus, the internal criterion of the Ministry of Environmental Protection, Physical Planning and Construction for high quality sea → FC/100ml ≤ 10 will be fulfilled at all beaches in the broader area.

- In respect to current fields within the study aquatic environment with the frequent change in current directions (NW-SE and vice versa) along the channel strike direction, a diffuser with alternating nozzles has been recommended. Beaches on the Island of Pašman will not be endangered by planned submarine system operation.

12. Marine biology

Researches of coastal and benthos flora and fauna were carried out in the broader area of the sewerage system outfall. Research methods comprised in situ visual observation and observation from the coast and a small boat. In November 2006, two biologist-divers carried out submarine and above-sea reconnaissance on a one-time basis. They elaborated an inventory of the observed flora and fauna species. Some protected species and protected habitats have been observed. Protected species, pursuant to the Regulation published in the Official Gazette No. 07/06 are: Pinna nobilis, Posidonia oceanica, Paracentrotus lividus and all Holothuroidea. Protected habitats in the broader area are: fine sands, coarse sands, Posidonia beds, circalittoral mud and circalittoral sands. The elements of the following habitats and biocenoses have been registered in the broader project impact area:



Littoral, supralittoral and mediolittoral Biocenoses of supralittoral rocks, upper mediolittoral rocks and lower mediolittoral rocks are under significant antropogeneous impact. Inhabited by typical species. Infralittoral In the biocenoses of protected littoral silty sands, marine angiosperms (flowering plants) meadows and numerous Echinoderms such as starfish, Murex sp., snails, hermit crabs, buried shells have been recorded. Association with the Cymodocea nodosa species – these biocenoses has not been under the antropogeneous impact, cymodocea meadows are relatively rare. Biocenoses of Posidonia oceanica covers a significant portion of the seabed in the broader Project impacts area at 9 – 16 m depths. Settlements is very dense, there are also green algae present. Common sea-urchin and Cnidaria specimens can also be observed. Biocenoses of infralittoral algae are inhabited by small specimens of brown algae typical for these biocenoses. Biocenoses of littoral terrigeneus muds are well developed, with the common species contents and population density. Movable organisms are common (sea cucumbers, starfishes, small groupers). Infralittoral communities around submarine outfalls comprise small seabed zone surrounding the outfall mouth. Mussels and deposits of white fiber bacteria have been found on the outfall.

13. Cultural historical heritage

List of registered and designated cultural properties: Bibinje

- Rural unit Bibinje, registered cultural property since 1979. - Church of Sv. Roko Ispovjednik in Bibinje, registered cultural property since February 23rd

2006. - Remains of the church of Sv. Petar na Petrini, preventively protected cultural property since

November 30th 2005. - Church of Sv Ivana Krstitelja in the old village - Church of Mučeništva Sv. Ivana Krstitelja na Punti – designated cultural property

Sukošan - Semi-urban old town Sukošan, registered cultural property since 1974. - Parish church of Sv. Kasijan - Church of Gospa od Milosrđa at the old graveyard, registered cultural property since 1974. - Sv. Martin na Kaštelini, preventively protected cultural property since 2006. - Vodotoč (Barbir) cove from Plitkače and Kažela capes, submarine archeological site (and

coastal installations) in Sukošan - registered cultural property, decision dated April 17th 2002. - Gornja vrata - designated cultural property within the zone of the protected old town of

Sukošan Marine localities Out of submarine localities, registered locality Vodotić, between the Barbir cove and Kažela cape in Sukošan shall be singled out. Reconnaissance determined the Late Antiquity submarine port installations at 1-4 m depth, comprising stone blocks in the sea surrounded by scattered ceramics that is typical for the Late Antiquity. Locality has been recently researched. At the Barbir cape there are traces on the beach and on the coast that are pointing to the mooring in use from the Antiquity to the Middle Ages. Within the coastal profile, at the Bibinje outskirts near the railroad and Gaženica (the so-called Banska punta), traces of walls made of ceramics and brick i.e. foundations of a rectangular structure extending from the beach into the sea can be observed. Nowadays, that, the most western zone of Bibinje is called Lipauska.



E. ENVIRONMENTAL IMPACTS

1. Environmental impacts during construction

1.1 Impact on soil and groundwater Disposal of surplus excavated earth material on surfaces not intended nor prepared as landfill. Oil and lubricant spill from construction machinery and vehicles. Washing and transport of loose material scattered over carriageway by precipitation.

In order to prevent potential soil and groundwater pollution by faecal water from the construction site, sanitary and catering facilities shall be provided.

In case of incorrect manipulation of lubricants, paints and other chemicals, those could infiltrate the underground

1.2 Seawater pollution Seawater pollution can be caused by disposal of surplus excavated material into the sea, washing of excavated material into the sea during excess rainfall or by leakage of fuel and/or lubricants from construction machinery and vehicles into the sea.

1.3 Noise During construction works, noise will be emitted by construction machinery, vehicles for transport of material and equipment, plants, manpower transport vehicles etc. Noise level can exceed allowable limits on the residential zone boundary, permanently or periodically.

1.4 Air pollution Airborne particles carried by wind as a consequence of dusting, caused by earth and other works at the construction site.

Loose material carried by wind from transport vehicles and exhaust gases from construction machinery.

1.5 Impact on flora and fauna Construction procedures will have specific impact on terrestrial flora and fauna. Parts of the existing habitat will be disturbed and; thus, also biological communities living in the project impact area at present. Some organisms will migrate from the construction site while some species and/or organisms will be destroyed. Construction sites are mainly located on and by the roads and urban areas with no habitats. Submarine outfall has already been laid. Thus, the diffuser impact will only be analyzed. Diffuser shall be laid the same as the pipe; thus, the impact on benthos will be limited to 2-5 m wide zone of the same length as the diffuser.

1.6 Impact on existing utilities During construction, there may be damages to municipal utilities (water supply, power supply…).

1.7 Impact on natural and cultural heritage Majority of sewerage system excavations will be carried out either through or adjacent to the registered and designated cultural-historical localities. Accordingly, continuous professional supervision by and archeologist employed by a competent authority or a museum shall be provided.

It refers to the following alignment sections:

• from the planned ,,Pruga" pumping station by the Lipauska site (Banova punta), trial and protective archeological investigations shall be planned as to determine archeological finds. If valuable finds are found, the alignment shall be relocated.

• from the ,,Bibinje" pumping station in Taline cove to the cultural-historical unit of Bibinje, continuous archeological supervision shall be provided because of the expected finds on the peninsulas, in particular at the square Sela vrata, upper riva Taline and Obala don Marka



Sikirića.

• supervision shall be provided on Punta of Bibinje near the church Mučeništva Sv.Ivana Krstitelja.

• in the section in Sukošan settlement, supervision shall be provided during the works on the coast in the area of Barbir and Vodotod since it is registered submarine and coastal site.

• reconnaissance and trail investigations shall be carried out at the Barbir site since there may be finds on the road and by the coast.

• at the outskirts of the Sukošan historic town, permanent archeological expert supervision shall be provided, in particular near the ,,Sukošan" pumping station and on the square Gornja vrata by the church Gospe od Milosrđa.

2. Impacts during WWTP and outfall operation

2.1. Impacts on soil, groundwater and sea Wastewater infiltration into the soil and/or sea may occur as a consequence of public sewerage system construction or maintenance. Negative impacts may arise from inadequate temporary storage of various waste substances generated in wastewater treatment process.

2.2. Impact on air Evaporation or vaporization of odorous gases and vapors (ammonia, amines, hydrogen sulfide, merkaptans,...) generated due to organic and inorganic matter degradation is expected at the following sewerage system facilities: raw wastewater pumping stations, coarse screens, grit-grease removal, aeration tank, sludge pumping, secondary settling tank and waste collection tanks.

Since there is residential zone adjacent to the WWTP (the first houses are at about 200 m distance) mitigation regarding odor shall be applied at the WWTP

2.3. Noise Noise impact is dual: at the WWTP and pumping station sites where noise disturbs O&M staff, and outside the WWTP site where noise has adverse impacts on neighboring communities, in particular at night when noise from other sources decreases.

High level noise can be generated at the following public sewerage system facilities: pumping station, blower unit, diesel generator, automatic sludge dewatering.

2.4. Impact on flora and fauna Following the completion of construction works, submarine outfall impacts will be minor. Since pipe material is inert, it will be easily inhabited by sesil organisms such as Serpula. sp., bryozoans, and later on, by sponges and Ascidians. Numerous benthos organisms will still hide under the pipes. The greatest impact will be visible around the diffuser and the submarine outfall mouth. Impact areas should not be greater than 0,3 i.e. very small. Organic matter content will be increased in sediment around that outfall section; thus the number of organisms that are processing organic matter will significantly increase. Circalittoral mud and circalittoral sands protected habitats can be found in that area. Impact, greater than the existing one, on rare, endangered and protected species is not expected in the broader Project impact area. An increase in the number of specimens is expected for some species.

2.5. Impact on natural and cultural heritage Sewerage system facilities will be located within the road structure (if possible) together with other utilities. Other facilities are located on non-urbanized areas, outside town zones.

2.6. Decline in land value Inadequate visual appearance and irregular maintenance would, the most certainly, impact the area of interest. Even when treatment plants are constructed as completely enclosed facilities and adequately



designed in terms of architecture, there is still a certain dislike by neighboring communities, in general due to psychological reasons. There will definitely be a decline in the adjacent building land value.

2.7. Impact on human and animal health Wastewater is very favorable for insect breeding. Still water, disposal sites for treatment plant waste, wastewater puddles and plashes, work areas or green areas where wastewater is concentrated due to infiltration or inadequate maintenance; those are all potential zones for insect breeding.

3. Environmental accident impacts

Environmental accidents due to force majeure (major earthquake, ravages of war, purposeful damages to system facilities or utilities etc.) will result in uncontrolled release of untreated wastewater into the environment. Major pollution would occur adjacent to the damaged system facilities. Human health will be endangered due to the danger of epidemics. Flora and fauna species in the vicinity of damaged system facilities would be seriously endangered.

A consequence of environmental accidents due to break in system operation (different equipment failure etc.) will be a short-term discharge of partially treated wastewater. Environment pollution would occur adjacent to the facilities with the break in operation.

F. ANALYSIS OF ALTERNATIVES

First of all, we can say that objectively there are no possibilities of developing any serious alternatives to the basic concept of the technical solution presented in the existing documents. Namely, the basic technical solution proposed in the Conceptual Solution is a realistic choice that would achieve connection of all users to the common wastewater sewerage and treatment system. Since both the wastewater treatment plant and the submarine outfall have been completed, and since they shall be retained for the final capacity, and both sub-systems gravitate towards the Marina “Dalmacija“, objectively speaking, it is impossible to develop an option that would be more favourable from any aspect, and especially from the financial aspect. Sufficient proof for this statement should be the fact that the (existing) common wastewater treatment plant is located practically in the middle of the covered area, and that the transport routes from both sub-systems are the shortest (and least expensive). Along with that, it is clear that the construction of one plant, in terms of the construction costs, and even more in the terms of operation and maintenance, is more favourable than the construction of two wastewater treatment plants. Therefore, there is no true alternative to the proposed basic solution. Also, the existing facilities are constructed in such dimensions and in accordance with such designs that their use is possible even in the conditions of increased hydraulic loads with a potential expansion/reconstruction on a smaller scale, i.e. replacement of equipment. Alternatives refer to the central zone of Sukošan settlement only in respect to wastewater transport to the trunk sewer situated under the Adriatic Tourist Road... Alternative 1 - Sukošan, wastewater of the K-2 sewer catchment will be collected at the „Sukošan“ pumping station and transported via pressure pipeline situated within a local road i.e. the shortest route to the K-1 trunk sewer. Alternative 2 - Sukošan - Zlatna Luka is the same as the proposal given in the Study of Water Protection in Zadar County, with the only difference that coastal sewer is planned in this Alternative. In comparison with the Alternative 1, an additional pumping station „Zlatna Luka“ is planned at the K-2 sewer alignment. With a view to select the more favorable alternative, several criteria have been assessed by weighting procedure (W):



- Environment protection, W = 30% - Financial indicators, W = 30% - Social aspect, W = 20% - Phased construction efficiency, W = 20%.

Based on the results of expert assessment of the alternatives, advantage was given to the Alternative 1 Sukošan, mainly because of more favorable social aspect since there is one pumping station i.e. one critical location less than in the other alternative, as well as due to efficiency of phased construction i.e. one pumping station less to construct and direct connection of sewers to the trunk sewer. Project construction costs have been estimated at: Sukošan, Alternative 1 – Bibinje = 84.223.423,50 kn Sukošan, Alternative 2 – Bibinje = 82.907.182,69 kn. The study also analyzed two alternatives:

- not to construct entire public sewerage system, i.e. not to construct wastewater treatment plant

- to construct entire public sewerage system. In case of "not to construct entire public sewerage system'' there will be no direct wastewater treatment costs. That solution imposes no benefits but only losses caused by the costal sea pollution The main economic activity in the area of settlements of Bibinje and Sukošan is related to tourism, but, development of tourist capacities in the coastal region results in increased water consumption, which obviously results in increased wastewater generation. On the other hand, wastewater discharge increases the pollution of surface waters and the sea. Lack of timely and adequate protection measures, with the present threat to the quality of waters and the sea, might in the end result in serious, irreversible sanitary and health problems, and thus undermine the economic basis of the analysed area. Wastewater may cause adverse effects on the human environment, and therefore the efforts are justified to solve the issue of wastewater sewerage as soon as possible, all with the objective to rehabilitate, using the future wastewater treatment plants, the already evident unfavourable ecological state. Some of the aforementioned losses can be quantified in financial terms and some don’t. However, payment for total losses can be expressed as ''water protection fee", in compliance with the section 3 of the Act on Water Management Financing (OG No. 107/95). According to Article 14 of the Act, fee can not be smaller that wastewater treatment price. Real value of water protection fee for average conditions in the Republic of Croatia has been estimated at 4,5 kn/m3. For the average daily wastewater flow in the planning period (the town of Metković with the 20,180 x 103 p.e.), 4.036 m3/d, daily ''water protection fee” would be 4036 x 4,5 = 18,162 x 103 kn/day, i.e. 6,63 x 106 kn/year annually. Thus, in case of "not to construct entire public sewerage system”, the town of Metković would pay annually 6,57 x 106 kn ''water protection fee” or compesation for waste water, and as the same time the Neretva River would be polluted complete with all other undesirable consequences. In accordance with the legitimate wishes of the local authorities and population to develop tourism in this area, investment is needed into the wastewater sewerage and treatment system. This would largely



eliminate the limiting factor for the development of this area and prevent further degradation of the coastal sea. This would improve the general ecological situation and quality of life in this area. Urgent and necessary investment into the wastewater sewerage and treatment system of the settlements of Bibinje and Sukošan (comprising of the main and secondary sewerage networks, pumping stations, wastewater treatment plant and submarine outfall) is a significant precondition for the economic and social development of these settlements. This shall also contribute to the protection of the recipient – the coastal sea, which is especially important for the analysed area, due to the relatively shallow sea.

G. MITIGATION PLAN

1. Protection measures during the preparation/project design of the intervention works

• Plan the construction in the shortest possible time – use state-of-the-art methods of quick installation of diffusers. Plan the installation of diffusers’ pipes for period when there is no intensive spawn of organisms, i.e. the best time is at the end of the summer and the beginning of autumn. Furthermore, take into account tourist season and avoid launching the works in the period when the use of water is highly intensive.

• In order to prevent waste water percolating into soil/ground water/sea make sure that for the construction of pipeline top quality material is selected.

• All the joints of channels, wells and tanks must be constructed so as to be watertight. • When drafting project documentation with pertaining calculations and further on, during the

construction, make sure to prevent the occurrence of fissures which can appear because of uneven subsiding and shrinking of material due to temperature differences and similar causes.

• All working and traffic surfaces, including suspended traffic connect to internal drainage system and in such a way, divert all water from regular washing to the purification process, including precipitation water.

• In order to avoid substantial damaging of plants covering the surface, precisely define the routes to be used by all machines and vehicles which will be used during the construction of the device.

• Prior to the beginning of construction works, particularly excavations, protect the existing installations from potential damaging. In case of the interruption of one of utility installation, make repair in the shortest time possible, according to instructions and under the supervision of the authorized professional utility services administration.

• Prior to the beginning of the construction of sewage network draft the Plan of Traffic for the duration of the construction on which basis supply and access to individual buildings will be organized.

• Plan separate drainage system for: a. Precipitation from roofs which are to be directly discharged into surrounding

terrain b. Precipitation from manipulative surfaces (access roads, parking lots) which after

being filtered through grease trap should be discharged into the surrounding terrain

c. Sewage waste waters which are to be conducted to the waste purification device

• Close all parts of the where there is high probability of air pollution: sieve grids, aerated sand trap, grease trap, places for capturing waste from grids, sand-grease trap and filtered sludge, place for sludge dehydrating.



• Draft the landscape plan making sure that in the section of greening of the area enough space is foreseen for evergreen trees along the borders of the device.

2. Environment Protection measures to be applied during construction

2.1. Air protection Reduce the emission of gaseous products, flying particles and residual to the minimum by applying the following measures:

- Use of newer mechanization and vehicles in good condition - Transport bulk cargo protected by appropriate cover

2.2. Protection of soil, groundwater and sea • Transport the removed soil to the location where it is safe from pollution and use its degradation

for the purposes of landscape arrangements of the area of intervention. • Ensure sufficient number of chemical toilettes and its regular cleaning by using services provided

by the authorized contractor. • After the completion of the work dispose of all construction, utility and chemical waste generated

by work activities by using services of authorized contractor. • Filling machines and vehicles with gas on a specially designated surface made of waterproof

material resistant to chemicals and secured by borderline canals. • Check that all parts of the existing drainage system that fits the construction requirements is

watertight and repair the sections of channel not meeting these conditions. Material evacuated from such pipes should be disposed of in an appropriate manner (1st category landfill).

• After the intervention has been completed, fill all septic pits and cancel all individual outlets of a single facility into the pit.

2.3. Protection of flora and fauna • Prevent dispersion of construction material into the sea and upon the completion of the

construction remove the remaining unused construction material from the seabed and dispose of it in an appropriate manner.

2.4. Protection against noise

• Carry out construction works during the day. In case the need occurs for the work during the night, undertake additional measures for the reduction of noise to the environment.

2.5. Protection of landscape and infrastructure structures

• Upon the completion of the construction remove every temporarily built object and recover infrastructure corridor and repair potential damaged on surrounding surfaces caused by maneuvering of machinery, disposing of construction material and alike.

2.6. Protection of cultural heritage

• Ensure the presence of a qualified conservator during the excavation.

3. Protection measures to be applied during the use

3.1. Air protection

• Maintain flow of the air in closed premises in order to prevent emission of unpleasant odor of substances from the openings of the object.



• Prior to emitting the polluted air from the closed parts of the device into the atmosphere pass it through biofilters. Mass used for filtering categorize as hazardous waste and dispose of it in appropriate manner.

• Place the filters with activated coal and after it has been used, categorize it as hazardous waste and dispose of it in appropriate manner.

• Perform regular cleaning and washing of all parts of the device and working surfaces.

• Regularly transport waste from grids and sand and grease from the aired sand-grease traps. • Perform regular cleaning and washing of tanks for waste as well as transport means.

• Carry out regular maintenance of sewage network in such a way to reduce and/or avoid subsiding of organic substances in the dry flow.

3.2. Protection of soil, groundwater and sea

• Perform regular cleaning and washing of the area around the device in order to reduce, i.e. prevent pollution of ground water.

• Waste water occurred at the construction site, collect by separate drainage system and dispose of in the following manner:

a. Precipitation from roofs discharge directly into surrounding terrain b. Precipitation from manipulative surfaces (access roads, parking lots) after they are

filtered through sand-grease trap discharge into surrounding terrain c. Sewage waste waters connect to the waste purification device

• Minimize negative impacts of waste products generated by waste water purification process to the maximum extent in the following manner:

a. Conclude an agreement with local authorized waste collectors for transport of all types of waste from the location

b. Store temporarily all waste in the designated waterproof and covered storing place until it is collected by the authorized waste collectors

c. Waste from grids must be transported on the daily basis and disposed of in the designated landfill

d. Sand from sand traps and drains after washing transport to the designated landfill e. Collect dehydrated, stabilized sludge from biological parts of the device and when

substantial amount is amassed transport to the device for mechanical-biological waste processing in the area of the existing stone-pit (Busišta 2 and Busišta 3) within administration borders of the City of Benkovac.

f. Keep all hazardous waste in labeled impermeable tanks on impermeable ground, protected from atmospherilia and together with accompanying documentation transfer the waste to authorized collectors of hazardous waste

g. Non harmful waste collect separately in containers, keep the records of it and deliver to authorized waste collectors

h. Municipal waste must be collected in containers and disposed of through utility services company.

3.3. Protection against noise

• Pursuant to Regulation on maximum allowable noise levels (Official Gazette No. 145/04) noise levels should be lower than the available levels (60 dB on the day and 50 dBA at night).



• When selecting electro-mechanical equipment select only those machines that are in line with the prescribed allowable values of noise. Machines with internal combustion (diesel aggregate) must have silencers mounted on the exhaust pipe.

• All spots with a higher noise levels insulate in such a way that at the borderlines of the device level of noise does not exceed the prescribed values.

3.4. Protection of flora and fauna • All installation and discharge devices are to be kept in a proper operational function so that the

large particles do not enter into the sea.

• Report immediately every irregularity in the operation of the waste purification device. • Overhaul of the device should be performed in the shortest possible time and that during the

periods when the rate of the use of outlet is at low. January or February is recommended as best periods

4. Protection measures for preventing and mitigating the impact of ecological accidents

• Prepare technical solution which will ensure minimal probability of the occurrence of ecological accidents. In case of such accidents, undertake measures in accordance with the Intervention Plan for Environment Protection

and Emergency Water Pollution Operational Plan.

• In case of emergency pollution of the sea undertake actions in accordance with the Emergency Sea Pollution Operational Plan (National Plan of Intervention in Emergency Sea Pollution, Official Gazette No. 8/97).

H. ENVIRONMENTAL MANAGEMENT AND TRAINING

Public sewerage system management and maintenance comprises: operation & maintenance of all buildings and plants, administrative and financial operations, supervision of system efficiency and maintenance, and monitoring of terrestrial ecosystem and effluent recipient quality. System operation and maintenance requires professionals in the field of technical sciences, law and economy. A new division shall be formed to manage and maintain water supply and sewerage systems.

It would be cost efficient and desirable for the same firm to mange both the water supply and sewerage systems since those are similar activities with the identical required expertise and qualification of employees.

I. ENVIRONMENTAL MONITORING PLAN

1. Monitoring of quality of purified water

The following indicators should be measured at both the entry and exit of the device in accordance with Regulation on limited values of indicators of hazardous waste and other substances in waste water (Official Gazette No. 40/99, 6/01, 14/01):

• water flow (m3/s) • concentration of dispersed substances (mg/1) • concentration of five-day biochemical expenditure (mg O2/1) • concentration of chemical oxygen consumption (mg O2/1) • concentration of total nitrogen (mg N/1)



• concentration of total phosphorus (mg P/1)

Sampling of water quality should be performed in compliance with water management permit.

2. Monitoring of quality of sea water

Four times in one year, measurement of the below parameters should be performed at two stations (one at the distance of 300 meter from inlet on the coast and second on 200 m distance from the coast):

• pH value • water temperature (°C) • salinity (0 %) • transparency • suspended particles (mg 1) • BPK4(mgO2/L) • KPK (mg O2/L) • diluted oxygen (mg o2/1) • mineral oils (µg/1) • ammoniac (mg N/1) • nitrite (mg N/1) • nitrate (mg N/1) • total nitrogen (mg /l) • orthophosphates (mg/L) • total phosphorus (mg/L) • chlorophyll “a” (mg/l) • fecal coliform bacteria (b.c/100 ml.) • fecal streptococcal bacteria

In order to compare results before (the so-called zero status) and after the construction of the system examinations of sea water quality must commence at least one year prior to the construction of the system, i.e. the device,. After putting the device into operation carry out the prescribed measurements during one year and after that check only technical validity of the system (regular maintenance).

3. Monitoring of quality of sediment

Two times in a year perform control at three points (before the pipe, middle diffuser, and 100 m along residual flow) of the following parameters in sediment: TOC, total phosphorus and heavy metals (Cu, Pb, Zn, and Sn).

4. Monitoring flora and fauna

After the completion of the submarine outfall construction perform inspection by divers of coastal part up to the depth where settlement of Posidonia oceanica terminates, and assess the status of settlement around outlet. Inspection should be carried out before the expiry of six month after the construction has been completed. Biological inspection should be performed every three years (coastal part and along diffuser) and samples taken for the analysis of the content of organic substances.

5. Program of monitoring of air quality

Measurement must be carried out two times in a year in the duration of ten days, during hot and cold season.



• Direction and speed of wind (m/s) • Air temperature (°C) • Moist in the air (%) • Precipitation (mm/min) • Ammoniac (mg NH2/m3) • Hydrogen sulphide (mg H2S/m3) • Merkaptane (mg C2H2SH/m3)

Measurement should start at least one year prior to putting the device into operation. Once in a year during hot season, collect air samples in the imminent vicinity of pumping stations. After putting the device into operation perform the prescribed measurements during the period of one year and after that depending on the results of measurements.

6. Program of monitoring the level of noise

Prior to putting the device into operation establish the zero status of noise level along the border with adjacent parcels. After putting the system into operation under maximum straining carry out noise measurement on the same points and, depending on the results obtained, define further monitoring i.e. if there is a need to propose the project for noise reduction.

7. Environmental protection cost estimate

Operation costs for WWTP only in the period from the year 2009 to 2031 are given in the following table:

Operation costs 2009 2010 2011 20121 2031

Monitoring 45000 46000 47000 57000 69000 Σ = 264.000,00 HRK

J. APPENDICES

Participants in the Study: Consultant: Hidroelektra – projekt, d.o.o., Zagreb Study Manager: Višnja Oreščanin, PhD Biol. Study Coordinator: Tihomir Hranilović, B.Sc. Arch. Autohors: Višnja Oreščanin, PhD Biol. Tihomir Hranilović, B.Sc. Arch. Slaven Rački, B.Sc. Chem. Techn. Donat Petricioli, B.Sc. Biol. Gordana Sekulić PhD Filip Đinđić, B.A. Archeology and Ethnology Prof. Vladimir Andročec PhD Assist. Prof.Goran Lončar PhD Nenad Leder PhD Branko Petričević, B.Sc.



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d.o.o. Osijek, 2005.g. 23. Njemačke ATW norme - Abwassertechnische Vereinigung 24. B.Ilakovac: ,,Rimski akvedukti na području sjeverne Dalmacije" , Zagreb 1982. 25. A.Gverić: ,,Iz prošlosti Bibinja",HKD Napredak Zadar, Zadar 1999. 26. L.Jelić ,,Povijesno-topografske crtice o biogradskom primorju",Zagreb 1898. 27. E.Peričić:"Sukošan-presjek kroz povijest'' ,Župa Sukošan, Zagreb 1989. 28. Registar kulturnih dobara Republike Hrvatske-popis zaštićenih kulturnih dobara 29. D.Vrsalović: «Istraživanja i zaštita podmorskih arheoloških spomenika u SR Hrvatskoj»,

izdanje Republičkog zavoda za zaštitu spomenika kulture-Zagreb, Zagreb 1974. 30. J.Vučić: «Arheološka istraživanja u crkvi Sv. Martina u Sukošanu». Obavijesti HAD-a br.3.,

Zagreb, 2005. 31. Izvješće o stanju okoliša i program zaštite okoliša Zadarske Županije, veljača 2006. godine,

www.zadarska-zupanija.hr 32. Rumenjak D.: Problemi određivanja troškova okoliša u cost-benefit analizi, Interni materijal,

Ministarstvo zaštite okoliša, prostornog uređenja i graditeljstva 33. Rumenjak D.: Metoda koristi i troškova (cost benefit) u procjeni utjecaja na okoliš (rad MP 9-

1/9), Interni materijal, Ministarstvo zaštite okoliša i prostornog uređenja 34. Samuelson P.A: EKONOMIJA, Mate, Zagreb, 2000. godine



Record of Interagency/Forum/Consultation Meetings

During two weeks in April 2007 EIA Study was available for public review in the premises of the Municipality of Bibinje. Information about public review was announced in the local newspaper „Zadarski list“ as well as on the notice boards of the Municipalities of Sukošan and Bibinje. There were no comments and suggestions about the Study given by the interested public during this period. Public meeting was held on May 3rd 2007. It started at 6.00 p.m. in the area of Youth club in Sukošan. Present officials were:

1. Tihomir Hranilović, B.Sc.Arch., Representative of the Consultant 2. Ante Martinac, Mayor of Sukošan Municipality 3. Tomislav Dražić, President of Sukošan Municipality Council 4. Nino Šimunić, Mayor of Bibinje Municipality 5. Ivan Šimunić, Chief of administrative department for social activities of Zadar county 6. Božidar Dijan, Deputy Mayor of Sukošan Municipality 7. Ante Čakarun, Councilor of Sukošan Municipality

There were also a number of interested citizens. After the presentation of the project to interested public there were no further comments and questions regarding project and EIA. The copy of Minutes from the public debate and Decision issued by Ministry of Environmental Protection, Physical Planning and Construction are given hereinafter:



MINUTES OF THE MEETING from public scrutiny of Environmental impact assessment study of the waste water purification

device Sukošan-Bibinje with submarine outfall held on 3 May, 2007 in the Youth House in Sukošane. The following persons participated in public scrutiny:

1. Tihomir Hranilović, B. Eng. Representative of project designers of the Study 2. Ante Martinac, Head of Municipality of Sukošan 3. Tomislav Dražić, President of Municipal Committee of the Municipality Sukošan 4. Nino Šimunović, Head of Municipality of Bibinje 5. Ivan Šimunović, Head of Management Board for Social Activities of the County of Zadar 6. Božidar Dijan, Deputy Head of Municipality of Sukošan 7. Ante Čakarun, Councillor of Municipal Committee of Municipality of Sukošani 8. Citizens

Ante Martinac Head of Municipality of Sukošan emphasized that the Environmental Impact Assessment Study had been offered to public scrutiny in the city hall of the Municipality Sukošan and Municipality of Bibinje on 23 April 2007 and that public scrutiny lasted fourteen days. No written opinion, comment or proposal were received. The Head then introduced the authors of the Study. The representative of the authors of the Study, Hidroelektra-project d.o.o. from Zagreb, Tihomir Hranilović, B. Eng. briefly explained some key elements from Environmental Impact Assessment Study to the present citizens. After the introductory note, he asked if there was any question. Present citizens had neither question nor comment but they all expressed full support to the project and satisfaction with its implementation. Mr. Tomislav Dražić President of Municipal Committee of the Municipality Sukošan and Heads of Municipality Sukošan and Municipality Bibinje Ante Martinac and Nino Šimunović pointed out that the construction of waste water purification device with submarine outfall is of historic value for Sukošan and Bibinje and above all for their citizens. Done at 18, 45 hrs

Drafted by: Zdenka Banović, LL.B.



REPORT

on public scrutiny of Environmental impact assessment study of the waste water purification device Sukošan-Bibinje with submarine outfall

From 23 April, 2007 the Environmental Impact Assessment Study Sukošan-Bibinje was offered to public scrutiny in the city hall of Municipality of Sukošan and Municipality of Bibinje. During the fourteen days of the duration of public scrutiny no written opinion, comment or proposal were received. On 3 May, 2007 public discussion about the Environmental Impact Assessment Study was organized in the Youth Home in Sukošan, starting from 18,00 hrs The representative of the authors of the Study, Hidroelektra-project d.o.o. from Zagreb, Tihomir Hranilović, B. Eng. briefly explained some key elements from the Environmental Impact Assessment Study to the present citizens. The present citizens had no question, comment or suggestion.

Municipality of Sukošan Head of Management Department

Zdenka Banović, LL.B. Done on 9 May, 2007



REPUBLIC OF CROATIA MINISTRY OF ENVIRONMENTAL PROTECTION, PHYSICAL PLANNING AND CONSTRUCTION 10000 Zagreb Ul. Republike Austrije 20 Class: UP/I 351-03/06-02/71 Reg. No.:531-08-3-1STZ/KP-07-13 Zagreb, May 14, 2007 Pursuant to Article 30 of Environmental Protection Act (Official Gazette No. 82/94, 128/99) the Ministry of Environmental Protection, Physical Planning and Construction (hereinafter: MEPPPC) and related to Article 12 of the Law on Structure and Scope of Ministries and State Administration Organizations (Official Gazette No., No. 199/03), referring to the request of the Municipality of Sukošan, after the procedure of environmental impact assessment has been conducted, passed the following DECISION

1. Planned interventions – waste water purification device Sukošan-Bibinje with submarine outfall - is acceptable for the environment providing measures for environment protection and monitoring of environmental status are implemented.

ENVIRONMENTAL PROTECTION MEASURES A1. Protection measures during the preparation/project design of the intervention works 1. Plan the construction in the shortest possible time – use state-of-the-art methods of quick

installation of diffusers. Plan the installation of diffusers’ pipes for period when there is no intensive spawn of organisms, i.e. the best time is at the end of the summer and the beginning of autumn. Furthermore, take into account tourist season and avoid launching the works in the period when the use of water is highly intensive.

2. In order to prevent waste water percolating into soil/ground water/sea make sure that for the construction of pipeline top quality material is selected.

3. All the joints of channels, wells and tanks must be constructed so as to be watertight.

4. When drafting project documentation with pertaining calculations and further on, during the construction, make sure to prevent the occurrence of fissures which can appear because of uneven subsiding and shrinking of material due to temperature differences and similar causes.

5. All working and traffic surfaces, including suspended traffic connect to internal drainage system and in such a way, divert all water from regular washing to the purification process, including precipitation water.

6. In order to avoid substantial damaging of plants covering the surface, precisely define the routes to be used by all machines and vehicles which will be used during the construction of the device.

7. Prior to the beginning of construction works, particularly excavations, protect the existing installations from potential damaging. In case of the interruption of one of utility installation,



make repair in the shortest time possible, according to instructions and under the supervision of the authorized professional utility services administration.

8. Prior to the beginning of the construction of sewage network draft the Plan of Traffic for the duration of the construction on which basis supply and access to individual buildings will be organized.

9. Plan separate drainage system for:

a. Precipitation from roofs which are to be directly discharged into surrounding terrain b. Precipitation from manipulative surfaces (access roads, parking lots) which after being

filtered through grease trap should be discharged into the surrounding terrain c. Sewage waste waters which are to be conducted to the waste purification device

10. Close all parts of the where there is high probability of air pollution: sieve grids, aerated sand

trap, grease trap, places for capturing waste from grids, sand-grease trap and filtered sludge, place for sludge dehydrating.

11. Draft the landscape plan making sure that in the section of greening of the area enough space

is foreseen for evergreen trees along the borders of the device.

A2. Environment Protection measures to be applied during construction Air protection

12. Reduce the emission of gaseous products, flying particles and residual to the minimum by applying the following measures:

a. Use of newer mechanization and vehicles in good condition b. Transport bulk cargo protected by appropriate cover

Protection of soil, groundwater and sea 13. Transport the removed soil to the location where it is safe from pollution and use its

degradation for the purposes of landscape arrangements of the area of intervention

14. Ensure sufficient number of chemical toilettes and its regular cleaning by using services provided by the authorized contractor.

15. After the completion of the work dispose of all construction, utility and chemical waste generated by work activities by using services of authorized contractor.

16. Filling machines and vehicles with gas on a specially designated surface made of waterproof material resistant to chemicals and secured by borderline canals.

17. Check that all parts of the existing drainage system that fits the construction requirements is watertight and repair the sections of channel not meeting these conditions. Material evacuated from such pipes should be disposed of in an appropriate manner (1st category landfill)



18. After the intervention has been completed, fill all septic pits and cancel all individual outlets of a single facility into the pit.

Protection of flora and faun

19. Prevent dispersion of construction material into the sea and upon the completion of the construction remove the remaining unused construction material from the seabed and dispose of it in an appropriate manner.

Protection against noise

20. Carry out construction works during the day. In case the need occurs for the work during the night, undertake additional measures for the reduction of noise to the environment.

Protection of landscape and infrastructure structures

21. Upon the completion of the construction remove every temporarily built object and recover infrastructure corridor and repair potential damaged on surrounding surfaces caused by maneuvering of machinery, disposing of construction material and alike.

Protection of cultural heritage

22. Ensure the presence of a qualified conservator during the excavation.

A 3 Protection measures to be applied during the use Air protection

23. Maintain flow of the air in closed premises in order to prevent emission of unpleasant odor of substances from the openings of the object.

24. Prior to emitting the polluted air from the closed parts of the device into the atmosphere pass it through biofilters. Mass used for filtering categorize as hazardous waste and dispose of it in appropriate manner.

25. Place the filters with activated coal and after it has been used, categorize it as hazardous waste and dispose of it in appropriate manner.

26. Perform regular cleaning and washing of all parts of the device and working surfaces.

27. Regularly transport waste from grids and sand and grease from the aired sand-grease traps.

28. Perform regular cleaning and washing of tanks for waste as well as transport means.

29. Carry out regular maintenance of sewage network in such a way to reduce and/or avoid subsiding of organic substances in the dry flow.

Protection of ground water and sea

30. Perform regular cleaning and washing of the area around the device in order to reduce, i.e. prevent pollution of ground water.



31. Waste water occurred at the construction site, collect by separate drainage system and dispose of in the following manner:

a. Precipitation from roofs discharge directly into surrounding terrain b. Precipitation from manipulative surfaces (access roads, parking lots) after they are

filtered through sand-grease trap discharge into surrounding terrain c. Sewage waste waters connect to the waste purification device

32. Minimize negative impacts of waste products generated by waste water purification process to

the maximum extent in the following manner: a. Conclude an agreement with local authorized waste collectors for transport of all types

of waste from the location b. Store temporarily all waste in the designated waterproof and covered storing place

until it is collected by the authorized waste collectors c. Waste from grids must be transported on the daily basis and disposed of in the

designated landfill d. Sand from sand traps and drains after washing transport to the designated landfill e. Collect dehydrated, stabilized sludge from biological parts of the device and when

substantial amount is amassed transport to the device for mechanical-biological waste processing in the area of the existing stone-pit (Busišta 2 and Busišta 3) within administration borders of the City of Benkovac.

f. Keep all hazardous waste in labeled impermeable tanks on impermeable ground, protected from atmospherilia and together with accompanying documentation transfer the waste to authorized collectors of hazardous waste

g. Non harmful waste collect separately in containers, keep the records of it and deliver to authorized waste collectors

h. Municipal waste must be collected in containers and disposed of through utility services company.

Protection against noise

33. Pursuant to Regulation on maximum allowable noise levels (Official Gazette No. 145/04) noise levels should be lower than the available levels (60 dB on the day and 50 dBA at night).

34. When selecting electro-mechanical equipment select only those machines that are in line with the prescribed allowable values of noise. Machines with internal combustion (diesel aggregate) must have silencers mounted on the exhaust pipe.

35. All spots with a higher noise levels insulate in such a way that at the borderlines of the device level of noise does not exceed the prescribed values.

Protection of flora and fauna 36. All installation and discharge devices are to be kept in a proper operational function so that the

large particles do not enter into the sea. 37. Report immediately every irregularity in the operation of the waste purification device.

38. Overhaul of the device should be performed in the shortest possible time and that during the

periods when the rate of the use of outlet is at low. January or February is recommended as best periods.



A.4. Protection measures for preventing and mitigating the impact of ecological accidents 39. Prepare technical solution which will ensure minimal probability of the occurrence of

ecological accidents. In case of such accidents, undertake measures in accordance with the Intervention Plan for Environment Protection and Emergency Water Pollution Operational Plan.

40. In case of emergency pollution of the sea undertake actions in accordance with the Emergency Sea Pollution Operational Plan (National Plan of Intervention in Emergency Sea Pollution, Official Gazette No. 8/97).

B. PROGRAM FOR MONITORING ENVIRONMENTAL STATUS B 1. Monitoring of quality of purified water

The following indicators should be measured at both the entry and exit of the device in accordance with Regulation on limited values of indicators of hazardous waste and other substances in waste water (Official Gazette No. 40/99, 6/01, 14/01): • water flow (m3/s) • concentration of dispersed substances (mg/1) • concentration of five-day biochemical expenditure (mg O2/1) • concentration of chemical oxygen consumption (mg O2/1) • concentration of total nitrogen (mg N/1) • concentration of total phosphorus (mg P/1)

Sampling of water quality should be performed in compliance with water management permit. B. 2 Monitoring of quality of sea water Four times in one year, measurement of the below parameters should be performed at two stations (one at the distance of 300 meter from inlet on the coast and second on 200 m distance from the coast):

• pH value • water temperature (°C) • salinity (0 %) • transparency • suspended particles (mg 1) • BPK4(mgO2/L) • KPK (mg O2/L) • diluted oxygen (mg o2/1) • mineral oils (µg/1) • ammoniac (mg N/1) • nitrite (mg N/1) • nitrate (mg N/1) • total nitrogen (mg /l) • orthophosphates (mg/L) • total phosphorus (mg/L) • chlorophyll “a” (mg/l) • fecal coliform bacteria (b.c/100 ml.) • fecal streptococcal bacteria



In order to compare results before (the so-called zero status) and after the construction of the system examinations of sea water quality must commence at least one year prior to the construction of the system, i.e. the device,. After putting the device into operation carry out the prescribed measurements during one year and after that check only technical validity of the system (regular maintenance). B. 3. Monitoring of quality of sediment Two times in a year perform control at three points (before the pipe, middle diffuser, and 100 m along residual flow) of the following parameters in sediment: TOC, total phosphorus and heavy metals (Cu, Pb, Zn, and Sn). B 4. Monitoring flora and fauna After the completion of the submarine outfall construction perform inspection by divers of coastal part up to the depth where settlement of Posidonia oceanica terminates, and assess the status of settlement around outlet. Inspection should be carried out before the expiry of six month after the construction has been completed. Biological inspection should be performed every three years (coastal part and along diffuser) and samples taken for the analysis of the content of organic substances. B5 Program of monitoring of air quality Measurement must be carried out two times in a year in the duration of ten days, during hot and cold season.

• Direction and speed of wind (m/s) • Air temperature (°C) • Moist in the air (%) • Precipitation (mm/min) • Ammoniac (mg NH2/m3) • Hydrogen sulphide (mg H2S/m3) • Merkaptane (mg C2H2SH/m3)

Measurement should start at least one year prior to putting the device into operation. Once in a year during hot season, collect air samples in the imminent vicinity of pumping stations. After putting the device into operation perform the prescribed measurements during the period of one year and after that depending on the results of measurements. B. 6 Program of monitoring the level of noise Prior to putting the device into operation establish the zero status of noise level along the border with adjacent parcels. After putting the system into operation under maximum straining carry out noise measurement on the same points and, depending on the results obtained, define further monitoring i.e. if there is a need to propose the project for noise reduction. II. The holder of planned intervention, i.e. the Municipality of Sukošan, is obliged to ensure that all established measures with regard to environment protection and the program of monitoring environmental status are implemented.



EXPLANATION On July 6, 2006, Municipality of Sukošan submitted the request for carrying out the environmental impact assessment procedure for the planned intervention – the waste water purification device Sukošan-Bibinje with submarine outfall. The request was submitted jointly with the “Environmental impact assessment study of the waste water purification device Sukošan-Bibinje with submarine outfall”, prepared by Hidroelektra-project d.o.o. Čazmanska 2, from Zagreb. By its Decision (Class: UP/I 351-03/07-02/20; Reg. No: 531-08-3-1-NM/KP-07-7) dated 1 March, 2007, the Ministry of Environmental Protection, Physical Planning and Construction appointed the Commission for the environmental impact assessment of the subject intervention. The Commission has held two sessions. At the first session, held on 27, March, 2007 in Sukošane, the Commission assessed that the submitted Study was well prepared but still had some deficiencies. Therefore, the Commission requested the holder of the intervention to ensure that the Study is amended in the statutory period and in line with the comments of the members of the Commission. On the same session the Commission issued a Decision to open the Study to public scrutiny. Public scrutiny was carried out in the area of municipality Sukošan and Bibinje and lasted 14 days and within its frame public discussion was also organized. Invitation to public scrutiny was published in the daily Zadarski list and on public billboards of municipalities Sukošan and Bibinje. The coordinator of public scrutiny was done by the Zadar County Administrative department of municipal activities and environmental protection. During public scrutiny no written opinion has been received. At the second held on 11 June, 2007 in Zagreb, the Commission issued a Conclusion whereby the planned intervention – the device for waste water purification Sukošan-Bibilje with submarine outfall - was assessed as acceptable for the environment provided that measures for environment protection and program for monitoring environmental status are implemented. Acceptability for the environment of this proposed intervention has been explained as follows: „According to plans, the waste water purification device for Sukošan –Bibinje will be placed in the area of Čukovice. Location was selected on the basis of hydraulic parameters (minimum required pumping from lower parts to the location of the device but sufficiently high to, by using the power of gravity, discharge filtered effluent through submarine outfall in the Zadar canal) and for the low visibility of the device. Technology of biological purification has been designed with the use of activated sludge, the method well known in our country, providing a good quality of effluents and relatively easy to upgrade for increase of capacity or for meeting more severe purification conditions (nitrification, removal of phosphorus). The intervention has been in compliance with the existing documents of physical planning. Due to topographic conditions of the terrain and already existing drainage system a separate drainage system has been planned. Wherever possible drainage system constructed on the principle of gravity will be used and where not, waste water must be elevated to a higher level. Vacuum and pressure system have also been considered, with a strong inclination toward pressure-based system due to previous experiences with such type of system as well as due to some weaknesses of vacuum system (regular maintenance required, and when malfunctioning occurs households connectors may be overflowing by waste water, spatial requirements are significant, since mounting household connection requires space for vacuum pumping station). The construction of this drainage system with waste water purification device for I and II phase and submarine outfall will contribute to the improvement of environment status and above all the improvement of sanitary quality of the sea. Based on numerical methods it has been established that at the length of submarine outfall L = 880 meters at the distance of 300 m from the coast, the concentration of fecal coliform bacteria meets the requirements from the Decree on sea water quality on the beaches (Official Gazette No. 33/96). The appearance of pycnoclyne in summer period will contribute to keeping effluent cloud generated by the work of submarine outfall in bottom-dwelling layer. Beaches on the island of Pašman will not be endangered by the work of submarine outfall. Based on the above stated facts, the Ministry of Environmental Protection, Physical Planning and Construction concluded that the proposed measures for environment protection for subject-matter



intervention are fully compatible with laws and other regulations as well as standards and measures which ensure that adverse impact is reduced to a minimum and that the highest possible preservation of environmental quality is maintained, and, pursuant to Article 30, Paragraph 2 of the Environmental Protection Act (Official Gazette No. 82/94 and 128/99) it has decided as in the disposition of this Decision. Instruction on legal redress Against this Decision appeal is not admitted, however administrative proceedings may be initiated. Administrative procedure is initiated by the appeal which must be submitted within 30 days from the day of the receipt of this Decision and is to be delivered directly or by postal services to the Administrative Court of the Republic of Croatia. Pursuant to the provisions set forth under Article 6 of the Law on Administrative Fee (Official Gazette No. 8/96, 131/97, 68/98, 66/99, 145/99, 116/00, 163/03 and 17/04) the holder of the intervention, being local self government unit, is exempt from paying of administrative fee for this Decision. State Secretary, Nikola Ružinski, Ph.D. To be delivered:

1. Municipality of Sukošan, Sukošan, XVIII. Sukošan 2. Institute for Physical Planning, Braće Vranjanina 11, Zagreb 3. Directorate for Inspection Affairs, here 4. Directorate for Physical Planning, here 5. Archive, here

Documents

SUKOŠAN – BIBINJE WASTEWATER TREATMENT PLANT AND SUBMARINE ...documents.worldbank.org/curated/en/370271468032390580/pdf/E19330… · client: hrvatske vode ulica grada vukovara