Ogtay%20mammadov

“Tamiz Shahar” Joint Stock Company

Rehabilitation project of Absheron lakes Presenter:

Ogtay Mammadov Head of Project Management and Public Relations Department, «Tamiz Shahar» JSC

Event:

The Rehabilitation project of Absheron lakes

Place:

Brussels, Belgium

Date:

25th September 2014

Project area

Binagadi lake

Khajahasan lake

Boyukshor lake

Zabrat lake

Bulbula lake

Zigh lake Lokbatan lake

Gu lake

Girmizi lake

Current Situation of the Lakes

Boyukshor lake

Current Situation of the Lakes

Khojahasan lake

Binagadi lake

Girmizi lake

Current Situation of the Lakes

Lokbatan lake

Bulbula lake

Zigh lake

Gu lake

Rehabilitation project of Absheron lakes

“Imagine if these contaminated lakes that now worsen the environment will become pure, there will be many good conditions, new recreation areas, parks and forest belts…”

Ilham Aliyev, President of Republic of Azerbaijan

Partner on remediation program

 Directions of activities:  Water  Infrastructure  Environment  Construction  Annual turnover of the Company: ~EURO100 mln  Number of employees: up to 1000

General approach to the project 1.

Inception phase: analysis of current situation • First system analysis • Identification of research needs • Establishing priorities

1.

Surveys, investigations • Data evaluation • Final system analysis

1.

Development of methodologies • Feasibility of application • Cost estimate of execution • Landscape design 8

General approach to the project

Deliverables: 1.

Inception report Initial findings and remediation perspectives

1.

Data report and system assessment

2.

Feasibility report

9

General approach to the project

INCEPTION

DATA

ASSESSMENTS

SYSTEM ANALYSIS / CONCEPTUAL SITE MODEL REMEDIATION MEASURES / FEASIBILITY 10

Inception and data acquisition

INCEPTION

DATA

ASSESSMENTS

SYSTEM ANALYSIS / CONCEPTUAL SITE MODEL REMEDIATION MEASURES / FEASIBILITY 11

Investigations

9 lakes investigated through field visits in spring, summer and fall  >5,080 pictures taken  16,915 ha watershed analysed  international experts and two local teams dedicated to the project 

12

Surveys

2,592 ha water surface fully covered  1,277,453 bathymetry grid points resulting in  9 geo referenced 3D digital terrain models of lake bed elevation and shorelines  649 sonar contacts registered  27 bore holes with monitoring wells placed (average 3 per lake) 

13

14

Sampling and analysis:

200 water samples taken  30 waste water samples taken  89 sediment samples taken  27 soil samples taken  database with 10,238 physicochemical analyses results 

15

Sampling and analysis:

66 waste water flow measurements  14 water balances constructed  Biological analysis 

    



50 blue-green algae species identified 24 plant species identified 18 diatom species identified 11 green algae species identified 3 fish species identified

9 conceptual site models constructed 16

Table of analysis Lake and waste water

Lake and waste water

Bottom sediments of the lakes

Soils

Physicochemical parameters: - pH - transparency Secchi (cm) - total suspended solids (mg/l) - salinity (mg/l) - dissolved O2 (mgO2/l) - nitric nitrogen (mg NO3/l) - nitrous nitrogen (mg NO2/l) - ammonium nitrogen (mg/NH4/l) - total phosphorus (mg P/l) -total hydrocarbons (mg/l)

Inorganic contaminants: - arsenic (µg As/l) - mercury (µg Hg/l) - cadmium (µg/ Cd/l) - copper (µg Cu/l) - cobalt (µg Co/l) - lead (µg Pb/l) -nickel (µg Ni/l)

Physicochemical parameters: - % size < 80 micron - carbonate content (% weight) - organic matters (mg C / g Dry Solid) - total hydrocarbons by extraction (mg C / g Dry Solid)

Physicochemical parameters: - % size < 80 micron - carbonate content (% weight) - organic matters (mg C / g Dry Solid) - total hydrocarbons by extraction (mg C / g Dry Solid)

Eutrophication indicators -chlorophyll a (mg/l) Microbiological parameters - fecal coliforms (No/100 ml) -total coliforms (No/100 ml) Biological: -phytoplankton -zooplankton -benthos -ixtiofauna -algoflora

Organic contaminants: - Total PAK (PAH (µg/l))

Inorganic contaminants:arsenic (mg As/kg DS) - cadmium (mg Cd/kg DS) - chromium (mg Cr/kg DS) - copper (mg Cu/kg DS) - cobalt (mg Co/kg DS) - mercury (mg Hg/kg DS) - lead (mg Pb/kg DS) -nickel (mg Ni/kg DS)

Inorganic contaminants: - arsenic (mg As/kg DS) - cadmium (mg Cd/kg DS) - chromium (mg Cr/kg DS) - copper (mg Cu/kg DS) - cobalt (mg Co/kg DS) - mercury (mg Hg/kg DS) - lead (mg Pb/kg DS) - nickel (mg Ni/kg DS) Organic pollutants - total PAH (µg/kg DS)

Organic contaminants: - total PAH (µg/kg DS)

17

Assessments

INCEPTION

DATA

ASSESSMENTS

SYSTEM ANALYSIS / CONCEPTUAL SITE MODEL REMEDIATION MEASURES / FEASIBILITY 18

Key factors in ecological analysis 1.

2.

3.

4.

5.

6.

7.

8.

9.

Toxicity Organic loads (oxygen dynamics) External nutrient load Light / transparency of the water Nutrient release from sediments Habitat suitability Dispersal Physical disturbance Experience of natural beauty

19

20

Risk assessment   

Human and ecological risk assessment US EPA screening levels Standard scenarios for human risks

Scenario

Description

Resident

permanent inhabitants close to the lake

Outdoor worker

industrial areas where people work throughout the year

Recreator

tresspassers and incidential visitors (about 10 days a year) who have walks, play, have picknicks and use the water for bathing and swimming

Symbol

21

Risk assessment

Outcome:  



Necessity for remediation for all lakes established Major problem compounds: Metals, aliphatic compounds and PAH Microbiological contamination (faecal and total coli)

22

System analysis and CSM

INCEPTION

DATA

ASSESSMENTS

SYSTEM ANALYSIS / CONCEPTUAL SITE MODEL REMEDIATION MEASURES / FEASIBILITY 23

Environmental situation

3 main hazards to the lake quality: Dumping

Oil

Sewage

Bulbula Bulbula

Boyuk Shor 24

CSM sewage influence

eptual Site Model sewage influence 25

CSM sewage influence

26

CSM oil influence

ceptual Site Model oil influence 27

CSM oil influence

28

CSM solid waste influence

eptual Site Model waste influence 29

CSM solid waste influence

30

System analysis and CSM

INCEPTION

DATA

ASSESSMENTS

SYSTEM ANALYSIS / CONCEPTUAL SITE MODEL REMEDIATION MEASURES / FEASIBILITY 31

Principle statement

Rehabilitation and beautification of a lake has one primary goal: adding value to the location, Baku and Azerbaijan

32

Principle statement

Rehabilitation and beautification of a lake has three basic steps: 1.

create stand-still: stop losing existing value

2.

restore value: make lake healthy

3.

development: add new value (bring potential to life) 33

Principle statement

Sometimes the state of a lake can be so bad, that the best way to move forward is to start over again: 4.

start-over: add value by creating completely new situation (e.g.: remove the lake)

34

Principle statement: approach

Value: low(est)

high(er)

Lake 1: create stand-still

Lake

Lake 2: restore value

4: start-over

Lake 3: add value

â&#x20AC;&#x153;parkâ&#x20AC;?

35

Considerations 1.

Baku Masterplan (2030)

2.

Current situation  

1.

speed of loss distance to target (make use of ‘quick wins’)

Level of investment  

use time to your advantage management of risks

36

BAKU 2030

37

Scenario development Stand-still: stop loosing value

Restore value: make lake healthy

Development: add value

Start-over: new situation

Bulbula Boyuk Shor Zabrat Binagadi Khojahasan Gu Lokbatan Girmizi Zig Scenario to be developed Potential intermediate step Not applicable

38

Remediation measures #

Icon

Description

Create stand still 1.

Stop dumping. Prohibit and enforce the progressive dumping of municipal, construction and production wastes on shores and in water (including use of waste as land reclamation material).

2.

Fencing of area and/or access. Placing fences and access gates at critical access points to the area in preparation of remediation and to establish control over the area.

3.

Waste collection points. Placing waste containers and signs at strategic points to facilitate controlled and legal disposal of municipal and construction waste by residents.

4.

Sewer connection. Connect housing in area to centralised sewer system to halt dumping of raw sewage in the lakes. Includes repair works to leaking sewer pipes.

5.

Waste water treatment facility. Installation of centralised waste water treatment to allow for release of cleaned sewage onto the surface water.

39

Remediation measures Gate

Waste water treatment facility Waste disposal facility 40

Remediation measures #

Icon

Description

Create stand still Cleaning and restoring 6.

Waste removal. Removal of illegally dumped municipal, construction and production solid waste by crane and truck.

Disposal at dedicated facility (e.g. waste to energy plant or land-fill).

7.

Processing and capping of dumped waste. Separation of dumped wastes in various classes (including processing, e.g. crushing) and controlled permanent storage (technical landfill).

8.

Removal of waste from the water (oil and solids). Skimming of floating oil layers and floating plastics. Includes lifting large debris from the lake bottom in preparation of dredging.

9.

Dredging of bottom sediments. Digging polluted sludge / sediment layer from the bottom of the lake. Can be done mechanically or hydraulically.

10.

Sediment disposal facility. Construction of a dedicated, permanent, disposal facility for the dredged sediments.

Various designs may be possible, e.g. land farming, geotextiles, etc.

11.

Capping and landscaping of dumpsites and land reclamation. Construction of closing infrastructure for dumpsites (e.g. sediment disposal facility), and land reclamations, including drainage, monitoring systems, foundation layer and topsoil.

12.

Groundwater interception system. Construction of infrastructure to block and divert groundwater flow from polluted (source area) to remediated (receptor) area. E.g. drainage pipe.

13.

Dam for water separation. Construction of barrier structure through water body to separate and isolate parts from the lake. Also for purpose of changing currents and wind effects.

14.

Barrage (water level management). Installation of level-controlled inflow and outflow points. E.g. adjustable weirs, barrages and fixed outflow thresholds.

15.

Earth works and (re)shaping. Digging, moving and dumping of shorelines and surroundings to facilitate development and improve functioning of the lake system.

16.

Reed beds and wetland creation. Reshaping of lake bottom and shore (including water level measures and when needed planting) to stimulate emergence of wetland ecosystem.

17.

Aeration. Installation of water movement facilities to oxygenate water body (e.g. fountains, artificial waterfalls or bubbling devices).

41

Remediation measures Hydraulic dredging

Sludge treatment by ripening Sludge containment in geotube 42

Remediation measures #

Icon

Description

Development 18.

Infrastructure for municipal development. Installation of foundation layers for roads, drainage systems, constructions of roads, sewers, cables and pipe lines.

19.

Water sports facilities. Modifications to shores and bottom for development of water recreation facility. E.g. development of access to the water (jetties, marinas).

20.

Planting and landscaping. Establishing vegetation and groundcover, through construction (e.g. irrigation and planting) or facilitation (e.g. fertilising). (Type varies and should be specified.)

21.

Boulevard and park facilities. Installation of facilitating measures for, and construction of, parks and associated facilities (e.g. quay walls, foundation layers, sweet ground, etc.)

Specials

22.

Accommodate natural phenomena. Special care and measures to accommodate natural phenomena in the design, e.g. mud volcanoes. To be more closely researched and designed.

23.

Special attention needed. Specialised measures (to be implemented in the design or as boundary conditions).

E.g. old oil wells and pipelines. To be more closely researched and designed.

43

Road dam

Remediation measures

Reed bed development

Landscaping 44

Costing



First order cost estimation of remediation measures



Dependent on level of ambition: ranges



Development costs not included (land reclamation for building, highways, parks, rowing venues, etc.)

45

Economical analysis 

Remediation costs based on average from first order cost estimate



Development costs included



Assessment of costs and benefits



Resulting in a cash flow



Assessments of assets 46

From concept to implementation

Boyukshor Lake Boyukshor Lake Area: 1060 ha Maximum length: 10 km Maximum width: 2,0 km Average depth: 2,3 m Contaminated sediments: 5,5 mln, m 3 Thickness of bottom sediments: 40-60 cm Wastewater discharged to the lake daily: 14600 m 3 Protection zone Protection strip: Area of the protection zone: Perimeter of the protection zone:

500 m 1130 ha 20 km

Sources of Contamination

Why Boyukshor?

Selection criteria:  The biggest natural lake of Absheron  One of the most polluted lakes  The most complex solutions  A strategic (close to the Olympic Stadium) and prominent area close to the city  Located in the natural lake bed  An area appropriate for work (test) 2013

2015

Principles of Rehabilitation

Rehabilitation Plan

3 Main Elements 

Four shore zones:  Dam

(in the West, yellow)  Shoreline close to the city (in the South, green)  Suburban shoreline (in the North, blue)  Stadium Shoreline (in the East, red) 

Lake  Bottom

sediments  Existing water in the lake

1. Main Dam

2. Shoreline Close to the City (South Shore)

3. Suburban (Northern) Shoreline

4. Stadium (Eastern) Shoreline

5. Cleaning of the Lake Bottom

5. Cleaning of the Lake Bottom

â&#x20AC;Ś and in reality

6. Improvement of Current Water and Water Situation in the Lake

Total View

Works Done 

Security works have been organized  

Protection zone has been identified 12 control stations have been installed



Project activities are being finalized in phases



Primary construction works have started

Works Done

Boyukshor Lake - Yesterday

Boyukshor Lake - Today

Boyukshor Lake â&#x20AC;&#x201C; Conceptual Design for 2030

Thank you for your attention! ÂŤTamiz ShaharÂť JSC Khojali ave. 55, Baku, Azerbaijan Tel.: (+99412) 4644110; 4644111 Fax: (+99412) 4644112 E-mail: info@tamizshahar.az