HRVATSKE VODE Cross-border cooperation Pravna osoba za upravljanje vodama for flood risk reduction ZAGREB, Ulica grada Vukovara 220
THE COOPERATION PROGRAMME INTERREG V-A CROATIA SLOVENIA 2014-2020
PROJECT: FRISCO 1 TECHNICAL SUPPORT FOR THE PREPARATION OF THE CROSS-BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
STUDY: CROSS-BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
FEASIBILITY STUDY SUMMARY
PREPARED BY: CONSORTIUM:
HIDROING d.o.o. OSIJEK - leading partner GRAĐEVINSKI FAKULTET SVEUČILIŠTA U ZAGREBU VODNO-GOSPODARSKI BIRO MARIBOR d.o.o. EXTERNUS CONSULTING d.o.o. HIDROKONZALT PROJEKTIRANJE d.o.o. VODOPRIVREDNO PROJEKTNI BIRO d.d.
Contracting authority: HRVATSKE VODE Zagreb, Ulica grada Vukovara 220
Project number I-1789/17
Prepared by: HIDROING d.o.o. Osijek
CROSS-BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
FEASIBILITY STUDY SUMMARY
EXECUTIVE:
Vjekoslav Abičić, mag.oec.
Zagreb, March 2019.
THE STUDY DOCUMENTATION IS PREPARED BY FOLLOWING EXPERTS:
STUDY TEAM LEADER:
Zdenko Tadić, dipl. ing. građ. - HIDROING
STUDY DEPUTY TEAM LEADER:
Diana Šustić, dipl. ing. građ. - HIDROING
EXPERT TEAM:
Mr.sc. Antonija Barišić-Lasović, dipl.ing. – environmental aspects- HIDROING Doc.dr.sc. Damir Bekić - GRAĐEVINSKI FAKULTET SVEUČILIŠTA U ZAGREBU Mag. Smiljan Juvan, udig - VODNOGOSPODARSKI BIRO MARIBOR
Tijana Mičić, udig - VODNOGOSPODARSKI BIRO MARIBOR Mate Soža, dipl. oecc. - financijska analiza - EXTERNUS CONSULTING Želimir Marojević, mag. ing. aedif. - HIDROING Branimir Barač, mag. ing. aedif. - HIDROING Igor Tadić, mag. ing. aedif. - HIDROING Zoran Vlainić, mag. ing. aedif. - HIDROING Tomislav Kržak, mag. ing. aedif. - HIDROING Hrvoje Barbarić, mag. ing. aedif., HIDROING
Date: March 2019.
EXECUTIVE:
Vjekoslav Abičić, mag.oec.
PROJECT FRISCO1 - TECHNICAL SUPPORT FOR THE PREPARATION OF THE CROSS-BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
FEASIBILITY STUDY SUMMARY
HIDROING d.o.o. OSIJEK
STUDIJA O PREKOGRANIČNO USKLAĐENOM UPRAVLJANJU RIZICIMA OD POPLAVA ZA SLIV RIJEKE DRAVE
TABLE OF CONTENTS
1 INTRODUCTION ...... 1 1.1 Project location ...... 1 1.2 Objectives of the Feasibility Study ...... 1 1.3 Activities carried out in the scope of Feasibility Study ...... 2 2 HYDRAULIC ANALYSIS AND FLOOD RISK ANALYSIS OF THE EXISTING STATE ... 3 2.1 Hydraulic analysis of the existing state ...... 3 2.2 Flood risk analysis ...... 6 2.2.1 Damage assesment methodology ...... 6 2.2.2 Damage assesment for the second phase of the flood risk analysis ...... 6 3 FORMULATION AND ANALYSIS OF ALTERNATIVE SOLUTIONS ...... 8 3.1 Short-term compontent of measures ...... 8 3.1.1 Reconstruction of the Otok Virje - Brezje dike (KM1) ...... 8 3.1.1.1 Description of the analyzed measure ...... 8 3.1.1.2 Damage estimation and flood risk analysis ...... 11 3.1.1.3 Investment costs ...... 11 3.1.1.4 Summary of the cost-benefit analysis ...... 12 3.1.2 Construction of the Mala Vas branch (KM2) ...... 14 3.1.2.1 Description of the analyzed measure ...... 14 3.1.2.2 Project benefits ...... 18 3.1.2.3 Investment costs ...... 19 3.1.3 Preparedness of the short-term component projects ...... 20 3.2 Long-term component of measures ...... 22 3.2.1 Description of the analyzed measures ...... 23 3.2.2 Damage assesment ...... 24 3.2.3 Assesment of the construction costs for the long-term measures ...... 27 3.2.4 Results of the cost-benefit analysis ...... 28 4 ENVIRONMENTAL AND NATURE PROTECTION ASPECTS ...... 29 5 SHORT-TERM MEASURES IMPLEMENTATION PLAN ...... 30 5.1 Evaluation of the Project maturity ...... 30 5.2 Dynamic plan of Project implementation ...... 30
HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
1 INTRODUCTION
1.1 Project location
The area of this project is the Drava river basin between the Markovci dam and Varaždin. The river segment of the joint Croatian-Slovenian interest is from rkm 297 to rkm 322 + 800, in total length 26 km. The catchment area in the Republic of Croatia comprises the northwestern part of the Varaždin County and the western part of the Međimurje County, while in the Republic of Slovenia project area includes the eastern part of the Podravska region and a small part of the southern part of the Pomurska region. The total surface area of the Drava river basin covered by this project is 411.94 km2.
Figure 1 Wider area of the Drava River cathcment on the segment of common Croatian-Slovenian interes
1.2 Objectives of the Feasibility Study
The main objectives of this Feasibility Study are to identify the optimal variant of long- term flood risk management measures for the target area, the section of the Drava River from Markovci to Varaždin and to verify the feasibility of construction measures, which are to be implemented within the framework of a later construction project (short-
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN term measures). As part of this study, potential long-term flood risk mitigation measures, which would be financed from other sources, were also analyzed.
1.3 Activities carried out in the scope of Feasibility Study
The activities carried out in the preparation of this feasibility study are described below.
A statistical analysis of the water waves of the Drava for the hydrological stations Markovci, Varaždin, Borl, Formin, Videm and Zamušani was made. The results of the statistical analysis were used as input data for the hydraulic model of the river Drava on the section between Markovci dam and Varaždin. The hydraulic analysis was done in two phases. The first phase of hydraulic analysis was carried out based on existing data and existing hydraulic models. The second phase was carried out on the basis of an improved hydraulic model, made in the activity T3.3. Based on the results of the hydraulic analysis, a flood risk analysis (also made in two phases) was performed. In the first stage of flood risk assessment, NACER methodology was used. Based on the results of the first phase, identification of possible measures to reduce the risk of floods was carried out. The verification and final analysis of the proposed measures were carried out on the basis of the results of the second phase of flood risk analysis. In the second phase of flood risk assessment, the Bilateral methodology of economic assessment of flood damage at cross-border basins was used.
In total, 12 measures were defined, of which 2 short-term and 10 long-term. Short- term measures are measures that can be implemented through a subsequent project funded under Priority Axis 1 of the Slovenia-Croatia Cross-Border Cooperation Program 2014-2018. INTERRGEG V-A (FRISCO 2). Long-term measures are measures that would be implemented in the future, using other sources of funding. Hydraulic analysis (based on the second phase hydraulic model), risk analysis, and cost estimation were performed for each measure. Cost and Benefit Analysis (CBA) was developed on the basis of risk analysis and cost estimates for each measure.
In this Summary the following activities are summarized:
Results of the hydraulic analysis and flood risk analysis of the existing state,
Analysis of alternative solutions (including description of solutions, risk analysis and CBA analysis),
aspects of environmental protection for alternative solutions
Short-term measures implementation plan
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
2 HYDRAULIC ANALYSIS AND FLOOD RISK ANALYSIS OF THE EXISTING STATE
2.1 Hydraulic analysis of the existing state
The hydraulic modeling of the Drava river in the project area is carried out in two phases. The first phase of hydraulic analysis was carried out based on existing data and existing hydraulic models. The second phase was carried out on the basis of an improved hydraulic model. For the purposes of this summary, the results of the second phase of the hydraulic analysis and flood risk analysis are presented, as the analysis of the measures is based on them. (shown in the Chapter 3).
The hydraulic model was created for two sections. Section 1 covers the area from the dam of HEPP Varaždin to the dam of HEPPČakovec. Section 2 covers the area from the dam of HEPP Formin to the dam of HEPP Varaždin. The geometry of the model was made based on several sets of geodetic cross- sectional footage, LiDAR footage, designs of the water infrastructure objects, official DEM and topographic and orthophoto maps.
For section 1 the upstream boundary conditions of the model are the discharges at the HEPP Varaždin dam and engine room, while the downstream boundary condition is the head water of HEPP Čakovec. For section 2, the upstream boundary conditions of the model are the discharges at the HEPP Formin dam and engine room, while the downstream boundary condition is the head water of Varaždin HEPP. Below are the results of the hydraulic model of the existing state, the flood extent of the return periods of 25, 100 and 1000 years flood.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Figure 2 The flood extent of 25 years return period flood
Figure 3 The flood extent of 100 years return period flood
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Figure 4 The flood extent of 1000 years return period flood
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
2.2 Flood risk analysis
In the second phase of the study the risk analysis was carried out based on the results of the second phase of the hydraulic model and the Bilateral methodology of economic assessment of flood damage at cross-border basins.
2.2.1 Damage assesment methodology
Within this methodology, economically measurable direct flood damage is primarily considered. Measurable indirect damage is estimated as a percentage of the corresponding direct damage. Economically measureless damages are not the subject of this methodology.
The economic assesment of flood damage was made for six categories of goods::
Residential buildings
Business facilities
Industry
Agriculture
Infrastructure
Other important goods
2.2.2 Damage assesment for the second phase of the flood risk analysis
The damage assesment is based on the results of the second phase of the hydraulic analysis, for the return periods of 10, 25, 100, 500 and 1000 years. The following table shows the estimation of damage by the return periods and the categories of damage. Estimated damage values are related to the entire area of the project.
Table 1 Estimation of damages for return periods and damage categories for the second phase of flood risk analysis (Amounts in EUR)
The following figure shows the damage function for the second phase of flood risk analysis.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Damage function 25.0
20.0 EUR)
6 15.0
10.0
Damage (10 Damage 5.0
0.0 0.001 0.01 0.1 probability
Figure 5 Function of damage for the existing state - the second phase of flood risk analysis
By integrating the area below the damage function curve, the average annual damage in the project area was calculated, and it amounts 730,872 EUR (5,554,627 kuna).
The calculation of average annual damage for the second phase of risk analysis is given in the following table.
probability damage 0.001 22,261,017 22,261 0.001 22,261,017 0.001 20,052,217 20,052 0.002 17,843,417 0.008 14,927,842 119,423 0.01 12,012,266 0.03 9,113,198 273,396 0.04 6,214,129 0.06 4,929,008 295,740 0.1 3,643,887 730,872 Table 2 Calculation of the average annual damage for the project area (Amounts EUR)
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
3 FORMULATION AND ANALYSIS OF ALTERNATIVE SOLUTIONS
3.1 Short-term compontent of measures
As a short-term component of measures, the following measures were considered:
i) Reconstruction of the Otok Virje - Brezje dike
ii) Construction of the Mala Vas branch
3.1.1 Reconstruction of the Otok Virje - Brezje dike (KM1) 3.1.1.1 Description of the analyzed measure
The Main Project (Faculty of Civil Engineering, Zagreb, December 2017) was made for the Otok Virje - Brezje protective dike. Based on this project, a building permit number: UP/I-361-03/18-01/00004 was issued in September 2018. The existing dike covers the right bank of the old Drava river corridor along the HEPP Varaždin. The length of the dike is 3.7 km. In November 2012, the largest flood vawe on the Drava River was recorded, causing a significant overflow of the affected dike in the length of more than 1 km. In addition, there was a breach of dike in the width of 50 meters, and three surrounding settlements were affected by flooding, with a total flood area of up to 6.5 km2. Due to significant changes in the subject area, the existing dike does not meet reqired dimensions and needs to be adequately strengthened.
With the project assignment of the above mentioned Main Project, it was decided that the crown of the reconstructed dike will be half a meter higher than the water level for a flow of 3100 m3/s. The defined width of the dike crown is 4 m. For the purpose of traffic during maintenance and mowing of the dike, layer of the breakstone on the crown is foreseen. The slopes were designed in a 1: 3 gradient. Next to the foot of the dike, on the rear side, there will be a 4 meter long service road made of pebble material.
Since the material for the reconstruction of the dike is well-graded gravel, and it does not have satisfactory waterproofing properties, a bentonite carpet is to be installed on the water side slope of the dike, which is then protected by a 60 cm thick filled cover.
In the following text, a detailed layout and a normal cross section of the Otok Virje - Brezje dike is presented.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Figure 6 Layout of the Otok Virje - Brezje dike
Figure 7 Normal cross section of the Otok Virje - Brezje dike
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
The following illustrates a comparison of the flood coverage of the existing and projected state for the return periods of 25, 100 and 1000 years.
Figure 8 The comparison of the existing and projected state for the return periods of 25, 100 and 1000 years
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
3.1.1.2 Damage estimation and flood risk analysis
Damage assesment for variuos return periods (10, 25, 100, 500 and 1000 years) and categories, average annual damage calculation and comparison of average annual damage in the existing (without project) and project state are presented below. The calculation refers to the whole area of the project.
Table 3 Estimation of damages for return periods and damage categories for the second phase of flood risk analysis - after Otok Virje - Brezje dike reconstruction (Amounts in EUR)
Table 4 Comparison between average annual damage „without project“ and „with project“ - Otok Virje - Brezje dike reconstruction
Average annual benefit after implementation of the short-term measure Reconstruction of the Otok Virje - Brezje dike amounts 151,176 EUR.
3.1.1.3 Investment costs
The investment costs of the measure are taken from bidder's offer.
The following table shows the investment costs of the reconstruction of the Otok Virje - Brezje dike reconstruction, with the following assumptions::
Prices include VAT (25%)
unforeseen costs amount to 5% of the value of land purchase, construction works and surveillance
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Nr. Item Amount (HRK) Amount (EUR) 1 LAND PURCHASE 800,000.00 105,263.00 2 CONSTRUCTION WORKS 2.1 Preparatory works 279,250.00 36,743.00 2.2 Geodetic survey 192,455.50 25,323.00 2.3 Earth works 16,703,315.63 2,197,805.00 2.4 Geosynthetics 4,339,545.00 570,993.00 2.5 Bentonite clay liner 2,820,847.01 371,164.00 2.6 Signs and protection 119,400.00 15,711.00 3 SUPERVISION 307,500.00 40,461.00 4 UNFORSEEN COSTS 1,030,492.53 135,591.00 TOTAL 26,592,805.67 3,499,054.00 Table 5 Investment costs for the reconstruction of the Otok Virje - Brezje dike
Maintenance costs for the concerned measure represent the difference between maintenance costs in the existing and projected state.
The maintenance costs for this measure amount to HRK 23,805 per year. 3.1.1.4 Summary of the cost-benefit analysis
The summary of cost and benefit analysis summarizes the basic tables - the outcomes of the analysis of the reconstruction of the Otok Virje - Brezje dike. Thousand kuna
Total OVERVIEW OF INVESTMENT COSTS 2019 2020 2021 % (kuna) Land purchase (800) - - (800) 4% Construction objects (6.150) (8.200) (6.150) (20.500) 90% Equipment - - - - 0% Total tangible assets (A) (6.950) (8.200) (6.150) (21.300) 93% Planning/design fees - - - - 0% Tehnical assistance - - - - 0% Promotion - - - - 0% Supervision of construction works (139) (164) (123) (426) 2% Unofrseen costs (354) (418) (314) (1.086) 5% Total project preparation costs (B) (493) (582) (437) (1.512) 7% Investment costs (7.443) (8.782) (6.587) (22.812) 100%
Replacement costs -
The residual value - Other investment costs - - - - Total investment costs (7.443) (8.782) (6.587) (22.812) Basic investment in % 32,63% 38,50% 28,87%
Table 6 Summary of investment costs
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
An incremental cash flow is presented in the following table.
Thousand kuna
FINANCIAL REVENUE CALCULATION OF INVESTMENT 2019 2020 2021 2022 2023 2033 2043 2047 2053 2063 2068 INCREMENTAL ANALYSIS Total inflow - - - 24 24 24 24 24 24 24 24 Income - - - 24 24 24 24 24 24 24 24 Total outflow (7.089) (8.364) (6.273) (24) (24) (24) (24) (24) (24) (24) (24) Total expenses - - - (24) (24) (24) (24) (24) (24) (24) (24) Total investment costs (7.089) (8.364) (6.273) ------Investment costs (7.089) (8.364) (6.273) ------Net cash flows (7.089) (8.364) (6.273) ------Table 7 Financial revenue of investment/incremental
The calculation results are summarized in the following table.
Main parameters Value Financial Rate of Return of the Investment (FRR/C) #NUM! Discount rate 4,0% Financial Net Present Value of the Investment (FNPV/C) (20.126)
Table 8 Summary of calculation of return on investment FRR/C andFNPV/C (000) kuna
The Guide to Cost-Benefit Analysis of Investment Projects (2014) includes guidelines for calculating the missing financial resources and the amount of EU non-refundable funds. Since it is a project that does not realize operating revenues (Croatian water revenues do not fall into the category of grants revenue), the co-financing rate applied is 85% of the total eligible value of the investment.
Thousand kuna
PROJECT FINANICNG SOURCE 2019 2020 2021 Total Share % EU Fond 6.327 7.465 5.599 19.390 85,00% Hrvatske vode 1.117 1.317 988 3.422 15,00% Total financial funds 7.443 8.782 6.587 22.812 100,00%
Table 9 Financing sources
The table below shows the net cash flow of the economic analysis used to calculate the net present value, the internal rate of profitability, and the cost and benefit ratio on an incremental basis.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Thousand kuna
CALCULATION OF INTERNAL ECONOMIC RATE 2019 2020 2021 2022 2023 2033 2043 2047 2053 2063 2068 INCREMENTAL ANALYSIS Total economic benefits - - - 1.137 1.137 1.137 1.137 1.137 1.137 1.137 1.137 External benefits (flood damage - - - 1.137 1.137 1.137 1.137 1.137 1.137 1.137 1.137 reduction) Residential buildings - - - 329 329 329 329 329 329 329 329 Business facilities - - - 41 41 41 41 41 41 41 41 Industry - - - 424 424 424 424 424 424 424 424 Agriculture - - - 226 226 226 226 226 226 226 226 Transport infrastructure - - - 63 63 63 63 63 63 63 63 Other assets - - - 54 54 54 54 54 54 54 54 Forests ------Damage on water infrastructure ------Incomes ------Total economic costs (5.047) (5.865) (4.398) (19) (19) (19) (19) (19) (19) (19) (19) Operational costs - - - (19) (19) (19) (19) (19) (19) (19) (19) Total investment costs (5.047) (5.865) (4.398) ------Investment costs (5.047) (5.865) (4.398) ------Other investment costs ------Net economic benefit (5.047) (5.865) (4.398) 1.118 1.118 1.118 1.118 1.118 1.118 1.118 1.118
Table 10 Economic analysis
The main tools for assessing economic analysis are the net present value calculation, the calculation of the internal rate of profitability and the cost and benefit ratio of the project. The results of these calculations are summarized below.
Main parameters Value The economic rate of return (ERR) on investment 6,47% Discount rate 5,0% Economic net present value (ENPV) of the investment 3.436 Benefit to cost ratio (B/C) 1,24 Table 11 Summary of the economic analysis ERR and ENPV (000) kuna
The overall result of the economic analysis of costs and benefits shows a positive result for the project in which the economic return rate is higher than the discount rate, then the positive net present value, and the ratio of benefits and costs is greater than 1 and is therefore eligible for funding from EU funds.
3.1.2 Construction of the Mala Vas branch (KM2) 3.1.2.1 Description of the analyzed measure
The location of the proposed measure is depression along the right bank of the River Drava on the sandbar opposite the Mala Vas in the Municipality of Gorišnica. Depression is the remainder of the former river Drava sleeve. Prermissions and building permits required for the construction of the sleeve were obtained, as shown in Table 14.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Figure 9 The location of the Mala Vas branch within the Frisco 1 project area At higher water levels, depressions are quickly filled with water. They are also overgrown and partially filled with silt. During floods of a return period of 5 years or more, the entire area of the sandbeds is flooded, all to the slopes of the main road Ptuj - MGP Zavrč. On the right bank, where the mentioned road is, more than 1.3 km long coastal construction was built. The coastal construction has protected the road corridor from the side erosion, which in the past, when there was no big sandbed on the right bank, caused problems. Because of the dense vegetation, state of the coastal construction is currently unclear. Erosion problems do not occur because dense vegetation reduces the flow velocity along the coast, and thus the possibility of erosion damage.
It is evident, however, that the erosion of the right bank, on the right band of the Drava river is progressing. Comparison between LIDAR 2013 and the geodetic footage made in the preparation of this project shows that the right bank of the River Drava is about 10m closer to the Ptuj - Zavrč road. Due to extreme high water levels in 2012 and 2014, the erosion was very intense, and this is reflected in the concave slope, which is concerned. The eroded slopes are almost vertical and represent potentially possible erosion, which could endanger the Ptuj - Zavrč road. The conceptual design of the branch construction was elaborated in the paper "Drava - vzpostavitev rokava ob desnem bregu nasproti Male vasi ", br. proj. 126/16-AS (VGP Drava Ptuj, November 2016.). The aforementioned report was used during the preparation of the project documentation for the subject branch construction. The main
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN goal of the project is primarily to reduce the risk of road erosion of Ptuj-MGP Zavrč road. The project documentation "Projekt FRISCO1 - Izdelava projektne dokumentacije za izvedbo gradbenih ukrepov za čezmejno zmanjševanje poplavne ogroženosti za reko Dravo Gradnja rokava reke Drave na desnem bregu pri Mali vasi" was prepared by Vodnogospodarski biro Maribor d.o.o., May 2017.
In order to reduce the erosion in the right concave curve, construction of the branch is planned. During large flood waves, at present state, water partially flows through the main riverbed, and mostly through the inundation which spreads all to the foot of the road embankment. After the construction of the branch, part of that large flood waves will flow through the branch.
In projected state, the height of the water will be somewhat lower (for 10 cm at the return period of 2 years, up to 5 cm at the return period of 100 years, respectively), and the mainstream will be partially directed towards the left bank.
Figure 10 Construction of the Mala vas branch - orto photo layout
Due to the proximity of the road and the existing coastal construction at the right bank, indicating that erosion problems have occurred in the past, the projected route of the branch extends along the sandbar to the right bank.
The route of the branch is moved from the right bank, following the flow of natural depression on the sandbar. In the downstream end, the branch is connected to the existing riverbed. Due to the greater distance from the coast (and road), erosion needs to be limited only to the shorter section, where the riverbed approaches the road.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
The cross-section of the branch changes depending on the terrain configuration. The goal is to form as large as possible flow profile, which will be in function of large flood wave drainage.
Figure 11 Construction of the Mala vas branch- characteristic corss section
In the dry part of the new branch (about 200 m in length), 3 lagoons are planned pits with still water at a level below the water level of an environmentally acceptable flow). The lagoons are about 50 m long and about 10-15 m wide. The lagoon depth extends up to a maximum of 1.5 m below the branch bottom level. Branch slopes remain in their natural state after excavation. Protection of the slopes will not be made. Together with the foreseen tree trunks, this is the starting point for introducing new river dynamics into the dry part of the Drava River.
The installation of 10 permanent wooden spurs and 20 tree trunks. Wooden spurs are foreseen in the lower part of the branch, on the part where the course of the branch is closest to the inundation of the Drava. They are projected solely on the left bank of the branch, to direct the flow to the south coast, which in that part of the branch is very near inundation.
Stone landfill
At the section where the Drava River is closest to the road and where side erosion is expected to continue, the construction of a landfill site is planned. By progressive erosion that will undermine the coastline below the landfill, the rocks will be scattered along the bank of the river and prevent road erosion. The volume of the landfill is estimated based on the planned formation of an eroded slope, on which the landfill of 8 m3 per meter will be placed. Volume is estimated based on the LIDAR footage, and it amounts approx. 1550 m3. Landfill is projected up to level of 205.50 m.s.l., with length of 185 m.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
3.1.2.2 Project benefits
Due to the nature of the investment itseld, its benefits cannot be fully assessed in the financial sense, as it is an investment of a non-profit sector whose task is to realize the public interest, including environmental concern.
Therefore, it is necessary to define factors that will not be evaluated solely in money, but which will be crucial for meeting the investment goals.
Slovenian legislation under the Regulation on a uniform methodology for the preparation and treatment of investment documentation in the area of public finances stipulates that investments include investments to improve the quality of life and other investments that will bring benefits in the future. The Regulation also provides that socio-economic criteria, in addition to direct effect (costs and benefits), also include indirect effects on the society as a whole, such as environmental, safety and health effects.
Program cooperation INTERREG V-A Slovenia-Croatia, under which the FRISCO 1 project is being implemented, defines the measures to be supported under Investment Priority 5b. Among the supported flood risk management measures in transboundary river basins, a number of non-structural measures to reduce flood risks in the target area of river basins, there is also a measure of natural water retention
Proposed measure can be considered as a measure of the promotion of river hydromorphology, higher flow dynamics or a measure of green infrastructure that improves the natural area and provides a better ecosystem-based solution based on nature, since the steep erosive slope under the road provides good conditions for the formation of nesting sites of rare and endangered bird species.
Positive effects to nature
The foreseen sleeve of Mala Vas is located in a nature conservation area with numerous protection statuses: a natural value, an ecologically important area, the Natura 2000 area. The method of execution of the sleeve was previously coordinated with the competent professional services of nature protection. Therefore, the implementation, with positive effects on the achievement of water economic goals, will have a positive impact on the objectives of nature conservation in the area. The proposed measures will also create rare and endangered habitats of protected species in the area and an improved state of protected habitat types. It is estimated that, in a few years, a variety of morphological conditions (flow velocity, depth ...) will be created in the riverbed of a new sleeve, which will create habitats for rare and endangered fish species such as sick Aspius aspius, the admirer of Zingel streber, the whitish globule Gobio albipinnatus and other importantly important species of fish.
New habitats would be potential hiding places, nurseries or spawns. The sleeve will be left to the natural processes of river dynamics after the implementation. Therefore, we
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN expect the steep slopes to form in the area, which would represent the potential nesting places of the endangered bird species of the vodka Alcedo atthis and the breguljka Riparia riparia. On the sections of loading of the gravel area of the site, suitable conditions will be established for the nesting of the small landowner Charadrius dubius and the small Martinique Actitis hypoleucos, as well as the rare and endangered species of birds that are bound to pebbly and overgrown islands. These species are also the qualification types of the Natura 2000 Drava area, therefore, with the implementation of the sleeve, we will also contribute to achieving the goals of preserving the nature of the European network of ecologically important areas.
Other indirect effects of the proposed measure
This measure will prevent further lateral erosion at the site where the river Drava is the closest to the regional road R1-228, which is of regional significance, as it leads towards the border crossing Zavrč. With the aim of preventing further erosion and consequently reducing the potential threat to the subject road, the construction of a rock dumping site is also foreseen, which can undoubtedly be considered as a wider social and economic benefit of the investment. 3.1.2.3 Investment costs
Investment costs are taken from the project documentation concerned „Projekt FRISCO1 - Izdelava projektne dokumentacije za izvedbo gradbenih ukrepov za čezmejno zmanjševanje poplavne ogroženosti za reko Dravo Gradnja rokava reke Drave na desnem bregu pri Mali vasi“, Vodnogospodarski biro Maribor d.o.o., May 2017.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Cost Number Item (EUR)
MALA VAS BRANCH 1 Preparation works 69,396.75 2 Ground works 393,073.96 Foreign services (design control, biologist control, 3 4,240.00 geodetic survey) 4 Finishing works 5,000.00 TOTAL 471,710.71
STONE LANDFILL 5 Preparation works 6,945.60 6 Ground works 160,000.00 Foreign services (design control, biologist control, 7 1,240.00 geodetic survey) 8 Finishing works 1,000.00 TOTAL 169,185.60
RECAP MALA VAS BRANCH 471,710.71 STONE LADNFILL 169,185.60 VAT 22% 140,997.19 TOTAL - DRAVA MALA VAS 781,893.50 Table 12 investment costs of the construction of Mala Vas branch
From the above overview the benefit of the measure in question, it can be concluded that all the positive effects can not be evaluated from an economic point of view, but that the project has a wider socio-economic effect. Since it is not possible to adequately economically present the benefits of the project, benefit and cost analysis (CBA) has not been performed for this measure.
3.1.3 Preparedness of the short-term component projects
Below is a review of the prepared project documentation and the issued permits and other documents necessary for performing the works on the proposed short-term component of the measure.
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Nr. Document Document number Date Issued by Conceptual project - Project for VPB Vodoprivredno- 1 bringing into functional state of VPB-TLD-12-001 6/2017 projektni biro d.d. Zagreb the Virje Otok - Brezje dike Ministry of Construction 2 Location permit UP/I-350-05/17-01/92 10/2017 and Physical Planning of the Republic of Croatia Main project - Bringing into Faculty of civil 3 functional state of the Virje Otok GLP-110-044/2017 12/2017 engineering, Zagreb - Brezje dike Ministry of Construction UP/I-361-03/18- 4 Building permit 9/2018 and Physical Planning of 01/000040 the Republic of Croatia Table 13 Review of the prepared project documentation and the issued permits for the Otok Virje - Brezje dike reconstruction
Dokument izdao / Broj Dokument Broj dokumenta Datum izradio Project FRISCO 1 - Project documentation for the implementation of the VODNOGOSPODARSKI 1 3715/17 5/2017 construction measures for the BIRO MARIBOR d.o.o. cross-border flood risk reduction for Drava Decision approving intervention Ministry of Agriculture, 2 3401-20/2017/5 5/2017 in the protection forrest Forestry and Food Ministry of Environment 3 Water Right 35507-2911/2017-2 5/2017 and Spatial planning, DRSV Consent to project Fisheries Institute of 4 4202-57/2017/4 5/2017 documentation Slovenia Expert opinion in the procedure for assessing the acceptability Institute of the Republic 5 of interventions in the 4-ll-532/5-O-17/AK 6/2017 of Slovenia for Nature framework of an authorization Conservation for interference with nature 351-598/2017-4 Administrative unit Ptuj, 6 Environmental Permit 6/2017 (04068) Republic of Slovenia Decsion - correction of the 351-598/2017-5 Administrative unit Ptuj, 7 6/2017 decision (04068) Republic of Slovenia Decision by the administrative 351-592/2017-2 Administrative unit Ptuj, 8 unit that a building permit is not 6/2017 (04068) Republic of Slovenia necessery Table 14 Review of the prepared project documentation and the issued permits for the project of Mala Vas sleeve construction
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
3.2 Long-term component of measures
List of the analyzed long-term measures is given in the following table.
Measure Works mark DM1 Construction of the Nova Vas pri Markovcih dike, length 653 m DM2 Construction of the Bukovci dike, length 600 m DM3 Construction of the Stojnci dike, length 829 m DM4 Construction of the Muretinci dike, length 1503 m DM5 Construction of the Gajevci - Placerovci dike, length 2360 m DM6 Construction of the dike for protection of individual facility, Stojnci farm, length 614 m DM7 Construction of the dike for protection of individual facility - Mala Vas farm, length 597 m DM8 Construction of the dike (length cca 300 m) and protective wall (length 1120 m) in the Town of Borl DM9 Construction of the Lovrečan Otok dike, length 706 m DM10 Construction of the dike (two sections, length 209 and 47 m) and protective wall (length 83 m) in the Town of Borl Table 15 List of the proposed long-term measures
Layout of the proposed long-term measured is presented on the following figures.
Figure 12 Layout of the dikes Nova Vas pri Markovcih, Bukovci, Stojnci and Stojnci farm
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Figure 13 Layout of the dikes Muretinci, Gajevci - Placerovci, Lovrečan Otok, Mala Vas and dike (red) and wall (black) in the town of Borl
3.2.1 Description of the analyzed measures
Measures DM1, DM2, DM3, DM4. DM5 and DM9 (dikes at Nova Vas pri Markovcih, Bukovci, Stojnci, Muretinci, Gajevci-Placerovci and Lovrečan Otok) are the classic trapezoidal cross sectional dikes. Invert elevation of the dike crown is defined as: the water level of a 100 years return period, increased by 1 m, provided that the so defined crown level exceeds the water level for 1000 years return period. Dike is foreseen as an earthen structure. The crown width of the dike is 4 m and the slope of the dike is 1: 3. The slopes are lined with humus, and a 3 m wide service road was constructed in the crown.
Measures DM6 i DM7 (farms Stojnci and Mala Vas) are the encompassing dikes aroung individual facilities, i.e. poultry farms. Both facilites are plocated on artificial plateaus, overtopping the surrouding terrain of the left inundation of the Drava River. Invert elevations of both plateaus do not meet required elevation regarding protection from floods of 10 years return period od higher. Therefore, construction of the encompassing dike is forseen. At theirs inner sides, dikes will be lean on the existing plateaus.Dikes are foreseen as an earthen structures. Invert elevation of the dike crown is defined as: the water level of a 100 years return period increased by 1 m, provided that the so defined crown level exceeds the water level for 1000 years return period. The crown width of the dike is 4 m and the slope of the dike is 1:3.
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Figure 14 Characteristic profile of the embankment around the individual facilities - farm Stojnci and Mala Vas
Measure DM8 foresees a dike and a wall in the Town of Borl, which defend several residential buildings and the road between Borl and the border with Republic of Croatia. On the part of the section where the width of the indundations is sufficient, a 300 m long dike is planned. Dike is planned as earthen structure. Invert elevation of the dike crown is defined as: the water level of a 100 years return period increased by 1 m, provided that the so defined crown level exceeds the water level for 1000 years return period. The crown width of the dike is 4 m and the slope of the dike is 1:3.
For the rest of the section, due to the lack of space, it is not possible to carry out the dike or overhang of the road, that will have a sufficient height. Therefore, the construction of the reinforced concrete wall is foreseen for the protection of the road in question. The total length of the wall is 1120 m. The height of the wall is variable, depending on the height of the ground or the height of the road level.
Mjera DM10 implies the construction of dike and a wall in the Town of Borl. The basic difference with the DM8 measure is the position and length of the wall. Within the measure DM10 the protective wall is 83 m long, located northwest of the Borl-MGP Zavrč road, and protects residential buildings. The wall is made of reinforced concrete, with an average height of 120 cm. The subject dike consists of 2 sections, length of 209 m and 47 m. Invert elevation of the dike crown is defined as: the water level of a 100 years return period increased by 0.5 m. The slopes are 1: 2.5 and the crown width is 4 m. In this variant, the road Borl - Zavrč is not protected.
3.2.2 Damage assesment
Assment of the flood reduction, by the categories and return periods, and average annual floor reduction for each proposed measure is given in tables 16 to 25.
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Table 16 Damage reduction, by the categories and return periods, after construction of Nova Vas dike
Table 17 Damage reduction, by the categories and return periods, after construction of Bukovci dike
Table 18 Damage reduction, by the categories and return periods, after construction of Stojnci dike
Table 19 Damage reduction, by the categories and return periods, after construction of Muretinci dike
Table 20 Damage reduction, by the categories and return periods, after construction of Gajevci - Placerovci dike
Table 21 Damage reduction, by the categories and return periods, after construction of encompassing dike for protection of the individual facility - Stojnci farm
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
Table 22 Damage reduction, by the categories and return periods, after construction of encompassing dike for protection of the individual facility - Mala Vas farm
Table 23 Damage reduction, by the categories and return periods, after construction of the dike and protection wall at the Town of Borl
Table 24 Damage reduction, by the categories and return periods, after construction of a Lovrečan Otok dike
Table 25 Damage reduction, by the categories and return periods, after construction of the dike and protection wall at the Town of Borl – Variant 2
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CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
The following table shows and overview of reduction of average annual damage, for each proposed measure.
Reduction of average Measure annual damage (EUR) DM1 15,589 DM2 2,354 DM3 16,025 DM4 36,536 DM5 45,970 DM6 42,996 DM7 81,825 DM8 5,607 DM9 8,928 DM10 4,634
Table 26 Reduction of average annual dmage (EUR)
3.2.3 Assesment of the construction costs for the long-term measures
Assesment of the construction costs for the long-term measures. Amounts are in kuna (HRK).
Design and TOTAL Land Construction Maintenance Measure Equipment planning TOTAL (including purchase costs costs costs VAT) DM1 65,118.00 869,578.47 0.00 4,944.60 93,469.65 1,033,110.72 1,260,395.08 DM2 68,568.00 967,238.00 0.00 5,416.80 103,580.60 1,144,803.40 1,396,660.15 DM3 147,618.00 2,872,014.71 100,000.00 12,772.20 311,963.27 3,444,368.18 4,202,129.18 DM4 241,776.00 4,535,454.97 100,000.00 20,570.40 487,723.10 5,385,524.47 6,570,339.85 DM5 325,320.00 5,426,168.40 100,000.00 26,868.00 585,148.84 6,463,505.24 7,885,476.39 DM6 91,560.00 1,796,811.86 0.00 7,682.40 188,837.19 2,084,891.45 2,543,567.57 DM7 62,646.00 890,801.03 0.00 4,768.20 95,344.70 1,053,559.93 1,285,343.12 DM8 83,874.00 1,101,953.94 0.00 6,275.40 118,582.79 1,310,686.13 1,638,357.66 DM9 33,258.00 4,356,989.56 0.00 2,431.80 439,024.76 4,831,704.12 5,894,679.03 DM10 21,396.00 443,776.00 0 2,000.00 46,517.20 513,689.20 626,700.82
Table 27 Assesment of the construction costs for the long-term measures
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
3.2.4 Results of the cost-benefit analysis
The following table presents recapitulation of cost and benefit analysis.
Mark Measure B/C DM1 Construction of the Nova Vas pri Markovcih dike 2.06 DM2 Construction of the Bukovci dike 0.28 DM3 Construction of the Stojnci dike 1.07 DM4 Construction of the Muretinci dike 0.93 DM5 Construction of the Gajevci - Placerovci dike 0.97 Construction of the dike for protection of individual DM6 1.71 facility - Stojnci farm Construction of the dike for protection of individual DM7 10.66 facility - Mala Vas farm Construction of the dike and protective wall in the DM8 0.17 Town of Borl DM9 Construction of the Lovrečan Otok dike 0.93 Construction of the dike and protective wall in the DM10 1.25 Town of Borl – Variant 2 Table 28 Recap of the cost-benefit analysis
From the cost and benefit analysis it is evident that positive result is achieved for the investments of the Nova Vas and Stojnci dike, encompassing dikes for the individual objects of Stojnci and Mala Vas farms and construction of the dike and protective wall in the Town of Borl (Variant 2).
Investments of construction of Muretinci, Gajevci - Placerovci i Lovrečan Otok dikes are slightly below the limit of profitability.
Investments of construction of Bukovci dike and construction of the dike and protection wall at the Town of Borl are not profitable.
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
4 ENVIRONMENTAL AND NATURE PROTECTION ASPECTS
As part of the formulation and analysis of alternative solutions for flood risk reduction in the area of flooding of the Drava river, the following measures were analyzed:
Measures of dike construction or reconstruction
Otok Virje - Brezje dike reconstruction
Dike construction will not have impact on the defined water bodies as the hydromorphological state of these water bodies is good or very good. Construction will not significantly alter the hydromorphological characteristics of the watercourse in terms of cross-section reduction or change of hydraulic characteristics (flow velocity, change of characteristic water levels, backwater formation). Negligible hydromorphological changes also do not significantly affect changes in habitats and plant and animal species. By implementing the measure, the influence on the water body status on the basis of hydrological and morphological conditions can be considered as long-term influences, but of a local character that will have no impact on the wider area and which will not be aggravated by the planned measure implementation. Therefore, it can be concluded that given the characteristics of the project, the proposed project may have an impact on the condition of the water bodies in the narrow area of the project, but it does not change the status of the water body. tijela.
In the project area, it is also necessary to define limitations and specific environmental protection objectives. Protected areas on the Drava river basin are mainly linked to watercourses. However, there are no specific restrictions on these protected areas.
Existing flood protection systems are, in general, based on environmentally-friendly flood control models - the use of natural floodplains to lower and retardation of flood waves. Adequate protection of the endangered goods can not be achieved without the implementation of structural measures to establish a controlled and harmless water flow, preventing flooding and reducing the intensity of flood destructiveness.
Measures of branch construction
Mala Vas branch construction
The proposed measure is a structural measure for the purpose of protecting humans and goods from floods. Although it can be considered as one of the greenest measures because we ensure the natural connection of the river with its sleeves, and in this way a natural retention of water. Some of the green construction measures are afforestation, preservation of forest habitats and changes in land use, natural retention of water, renaturalization of watercourses, relocation of embankments, etc.
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HIDROING d.o.o. OSIJEK
CROSS BORDER COORDINATED COMPREHENSIVE FLOOD PROTECTION STUDY FOR THE DRAVA RIVER BASIN
5 SHORT-TERM MEASURES IMPLEMENTATION PLAN
5.1 Evaluation of the Project maturity
Two short-term measures are proposed:
Reconstruction of the Otok Virje - Brezje dike
Mala Vas branch reconstruction
For both measures, the project documentation was prepared and the permits needed to carry out construction works were obtained.
Within this Feasibility Study, a financial and economic analysis was carried out for the measure Reconstruction of the Oto Virje-Brezje dike. The overall result of the economic analysis of costs and benefits shows a positive result for the project in which the economic return rate is higher than the discount rate, then the positive net present value, and the ratio of benefits and costs is greater than 1 and is therefore eligible for funding from EU funds.
For the measure Mala Vas branch construction all the positive effects of the measure can not be evaluated from the economic point of view. The project should be valued in a way that it has a wider socio-economic impact. Since it is not possible to adequately present the eceonomical benefits of the projec, no benefit and cost analysis (CBA) has been performed for this measure.
5.2 Dynamic plan of Project implementation
Project implementation plan is given for the following measures:
Reconstruction of the Otok Virje - Brezje dike
Mala Vas branch reconstruction
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IMPLEMENTATION PLAN - Structural measure DRAVA - reconstruction of the Otok Virje - Brezje dike 11/2018 12/2018 1/2019 2/2019 3/2019 4/2019 5/2019 6/2019 7/2019 8/2019 9/2019 10/2019 11/2019 12/2019 1/2020 2/2020 3/2020 4/2020 5/2020 6/2020 7/2020 8/2020 9/2020 10/2020 11/2020 12/2020 1/2021 2/2021 3/2021 4/2021 5/2021 Nr. Task Start End Duration I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV 1. PUBLIC PROCUREMENT 01.11.2019. 31.01.2020. 92
2. PREPARATION WORKS 01.02.2020. 14.02.2020. 14
2.1 Preparation of implementation project 01.02.2020. 31.01.2021. 731
3 GEODETIC SERVICES 01.02.2019. 31.01.2021. 731
4 GROUND WORKS
4.1 Machine excavation of humus 01.04.2019. 30.09.2020. 549
4.2 Filling of the dike body 01.05.2019. 31.12.2020. 611
4.3 ACCESS ROAD AND RAMPS 01.05.2019. 31.01.2021. 642
4.4 Final layer filling over the dike crown 01.08.2019. 16.01.2021. 535
4.5 Humus installation over dike slopes 01.09.2019. 31.01.2021. 519
4.6 Grassing of the slopes - hydroseeding 08.12.2019. 31.01.2021. 542
4.7 Geosynthetics and bentonite clay liner 01.05.2019. 31.12.2020. 611
5 TECHNICAL REVIEW 01.02.2021. 28.02.2021. 28
6 ELIMINATION OF DEFECTS 01.03.2021. 30.04.2021. 61
7 USAGE PERMITION 01.05.2021. 31.05.2021. 31
IMPLEMENTATION PLAN - Structural measure DRAVA - Mala Vas 4/2019 5/2019 6/2019 7/2019 8/2019 9/2019 10/2019 11/2019 12/2019 1/2020 2/2020 3/2020 4/2020 5/2020 6/2020 7/2020 8/2020 9/2020 10/2020 11/2020 12/2020 1/2021 2/2021 3/2021 4/2021 5/2021 6/2021 7/2021 8/2021 9/2021 Nr. Task Start End Duration I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV I II III IV 0. Cross-Border Harmonized Glood Risk Reduction 2.3 01.08.2019. 30.11.2021. 852 1. Management 01.08.2019. 30.11.2021. 852 1.1 Technical management 01.08.2019. 30.11.2021. 852 1.2 Financial management 01.08.2019. 30.11.2021. 852 2. Investment 01.08.2019. 15.11.2021. 837 Public procurement, sellection of contractors, signing the contract for 2.1 01.04.2019. 14.08.2019. 135 construction and surveilance 2.2 Mala Vas branch 15.08.2019. 30.11.2019. 107 2.2.1 Preparation works 15.08.2019. 05.09.2019. 21 2.2.1.1 Clearing the terrain 15.08.2019. 29.08.2019. 14 2.2.1.2 Geodetic services 29.08.2019. 05.09.2019. 7 2.2.2 Ground works 05.09.2019. 30.09.2020. 391 2.2.2.1 Temporary access road 05.09.2019. 19.09.2019. 14 2.2.2.2 Excavations 19.09.2019. 10.10.2019. 21 2.2.2.3 Installation of tree tranks into the banks of the canal 10.10.2019. 31.10.2019. 21 2.2.2.4 Wooden spurs construction 15.08.2020. 05.09.2020. 21 2.2.2.5 Stone weir construction 05.09.2020. 26.09.2020. 21 2.2.3 Foreign sevices 05.09.2019. 31.10.2020. 422 2.2.3.4 Design control 05.09.2019. 30.09.2020. 391 2.2.3.5 Biologist control 05.09.2019. 30.09.2020. 391 2.2.3.6 Geodetic survey 01.10.2020. 15.10.2020. 14 2.2.3.7 Project documentation phase (PID) 15.10.2020. 29.10.2020. 18 2.2.4 Finishing works 15.10.2020. 21.09.2021. 14 2.3 Civil engineering works - stone landfill 15.08.2021. 22.08.2021. 37 2.3.1 Preparation works 15.08.2021. 22.08.2021. 7 2.3.1.1 Clearing the terrain 15.08.2021. 22.08.2021. 7 2.3.1.2 Geodetic services 15.08.2021. 22.08.2021. 7 2.3.2 Ground works 22.08.2021. 05.09.2021. 14 2.3.2.1 Temporary access road 22.08.2021. 29.08.2021. 7
2.3.2.2 Supply and installation of the material into the body of the landfill 29.08.2021. 05.09.2021. 7
2.3.3 Foreign sevices 15.08.2021. 21.09.2021. 37 2.3.3.1 Design control 15.08.2021. 05.09.2021. 21 2.3.3.2 Geodetic survey 01.09.2021. 15.09.2021. 14 2.3.3.3 Project documentation phase (PID) 07.09.2021. 21.09.2021. 14 Primopredaja objekta (pregled izvedenih radova, uklanjanje 3 21.09.2021. 28.09.2021. 7 nedostataka, predaja upravitelju-korisniku)
REMARK In accordance with the Nature Conservation Act no. 351-598 / 2017-4 (04068), construction works are carried out from 15 August to 30 November Period beyond the permition for construction works