Earth Link and Advanced Resources Development s a. r L. (Elard) Submitted to: Council for Development and Reconstruction



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Executive Summary

Introduction

Greater Beirut has been facing a deficit in potable water for the past forty years. Shortage in water is estimated today at 145,000 m3/d and 275,000 m3/day for the wet and dry season respectively.

In 1970 the Lebanese Government of the day passed a decree (Presidential Decree No. 14522, May 1970) in which it allocated water from the Litani and Awali river catchments to different regions in Lebanon.

The proposed Beirut-Awali Project will secure a sustainable source of potable water to Greater Beirut to overcome the existing deficit and meet the city's potable water requirements on the short and medium term.

The CDR has initiated the Project following the request of the Ministry of Energy and Water (MoEW) and is seeking to secure financing of the project from the World Bank (WB) whereas the Beirut and Mount Lebanon Water and Wastewater Establishment (BMLWWE) will be covering the local counterpart financing needs.

The Project will be implemented on conventional contract basis with expected construction duration of four years and one year operational maintenance.

The Project has a World Bank (WB) “Category A” status and therefore a full Environmental and Social Impact Assessment (ESIA) has been required.

This report provides an updated ESIA which identifies potential environmental and social impacts associated with the proposed Project and proposes relevant mitigation measure and management plan.

Legal and Institutional Framework

This ESIA complies with the Lebanese Legislative requirements as well as with that international (WB/IFC) and European Union standards.

The overall control of water supply and quality is under the Beirut and Mount Lebanon Water and Wastewater Establishment acting under the Ministry of Energy and Water (MoEW) while the Ministry of Environment and various line Ministries are charged with specific regulatory duties.


Regionally the Project area is under the Governorate of Mount Lebanon and its subordinate cazas and Municipalities

Project Description


The Project is divided into two main components:

  1. The Awali-Beirut Water Conveyor

  2. Improvement and rehabilitation of the water distribution network in Beirut and its suburbs

The Awali- Beirut Water Conveyor includes the following sub-components:

  • Joun Regulation Structure: set into the hillside by the existing adit access from the Joun tunnel to the hydro-electric power station.

  • Joun to Ourdaniye Tunnel: running underground throughout its length of 4.1 Km.

  • Wadi Abou Yabes washout: (discharge point) for emergency discharge or routine maintenance

  • Ourdaniye Water Treatment Works: including tunnel inlet and outlet portals and the water treatment works. Sludge treatment and disposal facilities will be associated with this works. A washout will be provided for emergency discharge.

  • Ourdaniye to Khalde tunnel: underground throughout its length of 19.7 km.

  • Inverted Siphon: in the Damour river with ventilation shafts at the hills to the south and north of the valley. A washout will be provided for use in emergencies and for maintenance.

  • A surge shaft in the hillside above Khalde: 2,800 mm diameter shaft in reinforced concrete with surface venting structure 7 m diameter in reinforced concrete, including improved access road.

  • Outlet portal in the hillside above Khalde: termination structure in reinforced concrete and upgraded access road
  • Flow measurement and sampling chamber on the hillside above Khalde.


  • Twin Pipeline from Khalde portal to Khalde distribution chamber: 1.9 km long and 1,400 mm diameter

  • Khalde distribution and connection chamber: in reinforced concrete containing isolating and regulating valves. Provides washout to local stream.

  • Twin Pipeline form Khalde distribution chamber to Hadath 90 and 125 reservoirs: 7.6 km long, 1,400mm diameter pipelines in ductile iron with connections to Hadath 90 and 125 reservoirs and local supply.

  • Hadath 125 reservoir: Storage reservoir, two compartments, effective volume 30,000 m3 in reinforced concrete with isolating valves and small surface kiosk, including access road. Connection to local distribution system.

  • Hatdath 90 reservoir: Storage reservoir, two compartments, effective volume 50,000 m3 in reinforced concrete with isolating valves and small surface kiosk, including access road. Connection to local distribution system.

  • Pipeline from Hadath reservoirs to Hazmieh reservoir: 2.7 km long twin 1,300 diameter pipelines in ductile iron, with option for further extension for supply of treated water to Beirut.

  • Hazmieh 90 reservoir: Storage reservoir, two compartments, effective volume 20,000 m3 in reinforced concrete with isolating valves and small surface kiosk, including access road. Connection to local distribution system.

Component 2 will comprise:


  • The construction of 16 reservoirs (between 500 m3 and 1000 m3 storage capacity each) and associated pumping stations distributed across the various distribution zones in the project area;

  • The replacement and/or installation of approximately 187 km of distribution network across the project area in Ein El Delbi, Southern Beirut and parts of the Metn area;

  • Installation of 200,000 household meters in portions of the project area to be selected by the GBMLWWE and to operate on a volumetric tariff basis;

  • Installation of bulk meters at the reservoirs and distribution chambers;

Analysis of Alternative

The No Project Option and other scheme alternatives were addressed in this report.

The No Project alternative is considered to be not viable, as it would have severe environmental and socio-economic impacts in Beirut.

Five overall project options were identified and are illustrated in Table 1 -1 below:

Table 1 1 Overall Project Options

Option

Option Name

Description

1

Tunnel 1

Tunnel form Joun direct to a WTW at Khalde with pipeline transfer to reservoirs in Beirut

2


Tunnel 2

Tunnel form Joun direct to Khalde via a WTW in Ouardaniye, with pipeline transfer to reservoirs

3

Concrete Pipeline

Tunnel from Joun to a WTW at Ouardaniye thence by concrete pipeline to Khalde with pipeline transfer to reservoirs in Beirut

4

Ductile Iron Pipeline

Tunnel from Joun to a WTW at Ouardaniye thence by ductile iron pipeline to Khalde with pipeline transfer to reservoirs in Beirut

5

Steel Pipeline

Tunnel from Joun to a WTW at Ouardaniye thence by steel pipeline to Khalde with pipeline transfer to reservoirs in Beirut

Option 2, Tunnel 2 was preferred for the following reasons:



  • Lowest overall cost

  • Greatest security in terms of:

  • Least vulnerability to deliberate damage

  • Best resistance to earthquakes

  • Least risk of leakage and consequential damage

  • Greatest durability and design life

  • Lowest maintenance requirements (and thus minimized supply disruption)

  • Easier to supply the coastal strip from Ouardaniye WTW rather than a Khalde WTW

  • Spare hydraulic capacity available:

  • To supplement inadequate reservoir capacity in Beirut
  • To allow for future expansion of required; and

  • Least environmental impact during construction



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