LEBANESE REPUBLIC COUNCIL FOR DEVELOPMENT AND RECONSTRUCTION German-Lebanese Financial Cooperation KfW Entwicklungsbank JEITA SPRING PROTECTION PROJECT, PHASE I FEASIBILITY STUDY REHABILITATION OF TRANSMISSION CHANNEL JEITA SPRING INTAKE – DBAYE WTP April 2011 GITEC Consult GmbH, Düsseldorf / Germany in cooperation with: in association with Federal Institute for Geosciences and Natural WE Consult LIBANCONSULT AGM Resources BGR, Düsseldorf, Germany Beirut / Lebanon Hannover / Germany REPUBLIC OF LEBANON GERMAN – LEBANESE FINANCIAL COOPERATION Council for Development and Reconstruction (CDR) "Jeita Spring Protection Project (JSPP), Phase I" Feasibility Study: Rehabilitation of Transmission Channel TABLE OF CONTENTS 0. SUMMARY ...................................................................................................... 1 1. INTRODUCTION TO JSPP PROGRAMME .................................................... 4 1.1 TENDERING AND AWARD OF CONTRACT ............................................................... 4 1.2 THE PROJECT AREA .......................................................................................... 4 1.3 OTHER ACTORS IN THE SANITATION SECTOR (EIB, ITALIEN, GIZ + BGR) ................. 4 1.4 PROGRAMME’S GOAL AND OBJECTIVES .............................................................. 5 2. PROJECT AREA ............................................................................................ 7 2.1 BRIEF INTRODUCTION TO THE GENERAL CHARACTERISTIC OF THE PROJECT AREA .. 7 3. SOIL INVESTIGATIONS ................................................................................. 9 4. EXISTING TRANSMISSION CHANNEL ......................................................... 9 4.1 INTRODUCTION .................................................................................................. 9 4.2 SCHEMATIC SKETCH OF TRANSMISSION CHANNEL .............................................. 10 4.3 BRIEF DESCRIPTION OF THE TRANSMISSION CHANNEL ........................................ 11 4.4 PREVIOUS REPORTS........................................................................................ 12 4.5 JEITA SPRING INTAKE ...................................................................................... 13 4.6 WATER SAFETY ALONG THE JEITA - DBAYEH TRANSMISSION MAINS ................... 18 4.6.1 Introduction .................................................................................................... 18 4.6.2 Components of the Transmission Main .......................................................... 23 4.6.2.1 Jeita Spring Intake - Transfer of Jeita Spring into the Canal ....................................... 26 4.6.2.2 Kashkoush Spring Intake and Transfer into the Canal ................................................ 30 4.6.2.3 Canal from Harch to the Mokhada Diversion Station .................................................. 34 4.6.2.4 Canal from Mokhada Diversion Station to the Tunnel ................................................. 41 4.6.2.5 Tunnel and Dbaye Intake ............................................................................................. 45 4.6.3 Georisks ........................................................................................................ 47 4.6.4 Summary ....................................................................................................... 47 4.6.5 References .................................................................................................... 48 4.7 HYDRAULIC CHARACTERISTICS OF CURRENT TRANSMISSION MAINS ................... 49 4.7.1 Injection Sites ................................................................................................ 49 4.7.2 Monitoring Sites ............................................................................................. 51 4.7.3 Results .......................................................................................................... 52 4.7.3.1 Flow Rates and Physical Losses ................................................................................. 52 4.7.3.2 Travel Times ................................................................................................................ 58 4.8 OPERATIONAL PROBLEMS AND POSSIBLE REMEDIAL MEASURES ........................ 60 4.9 LEAKAGES ...................................................................................................... 63 4.9.1 Intake site ...................................................................................................... 63 4.9.2 Transmission Channel ................................................................................... 63 4.9.3 Irrigation Abstractions .................................................................................... 63 April 2012 GITEC / WE Consult / LIBANCONSULT Page ii REPUBLIC OF LEBANON GERMAN – LEBANESE FINANCIAL COOPERATION Council for Development and Reconstruction (CDR) "Jeita Spring Protection Project (JSPP), Phase I" Feasibility Study: Rehabilitation of Transmission Channel 4.10 CAPACITY OF TRANSMISSION CHANNEL AND CAPACITY CONSTRAINS ................. 64 5. REHABILITATION, AUGMENTATION OF TRANSMISSION CHANNEL ..... 66 5.1 GOAL OF A REHABILITATION AND OR AUGMENTATION WORKS ............................. 66 5.1.1 Spring Intake ................................................................................................. 66 5.1.2 Transmission Main ........................................................................................ 66 5.1.3 Possible Scenarios ........................................................................................ 67 5.1.3.1 Scenario A ................................................................................................................... 67 5.1.3.2 Scenario B ................................................................................................................... 68 5.1.3.3 Scenario C: .................................................................................................................. 72 5.2 REHABILITATION AND AUGMENTATION OF TRANSMISSION CHANNEL ................... 73 5.2.1 Proposed New Spring Intake ......................................................................... 73 5.2.2 Transmission Channel ................................................................................... 75 5.3 PRODUCTION AND ABSTRACTION MONITORING ................................................. 76 6. WATER STORAGE OPTIONS IN THE JEITA CATCHMENT ....................... 77 6.1 INTRODUCTION AND KEY ASSUMPTIONS ............................................................ 77 6.2 POTENTIAL DAM SITES .................................................................................... 83 6.2.1 Kfar Debbiane Dam ....................................................................................... 85 6.2.2 Faitroun Dam ................................................................................................. 87 6.2.3 Zabbougha Dam ............................................................................................ 87 6.2.4 Boqaata Dam ................................................................................................ 88 6.2.5 Daraiya Dam ................................................................................................. 89 6.2.6 Baskinta Dam ................................................................................................ 91 6.3 SUMMARY ....................................................................................................... 91 6.4 PRELIMINARY COST ESTIMATE ......................................................................... 93 6.5 REFERENCES .................................................................................................. 94 7. PROJECT ASSESSMENTS IN VIEW OF AN OPTIMAL JEITA AQUIFER PROTECTION ............................................................................................... 96 8. ENVIRONMENTAL IMPACT ASSESSMENT (EIA) ...................................... 96 9. ENGINEER'S COST ESTIMATE + FINANCIAL ANALYSIS ......................... 96 9.1 INVESTEMENT COSTS ...................................................................................... 96 9.2 ANNUAL COST OF OPERATION AND MAINTENANCE ............................................ 98 9.3 FINANCIAL ANALYSIS ....................................................................................... 98 9.3.1 General Approach and Assumptions ............................................................. 98 9.3.2 Annual water production and power generation ............................................. 99 9.3.3 Capital Cost ................................................................................................. 100 9.3.4 Operation and Maintenance Cost ................................................................ 101 9.3.4.1 General Assumptions and Methodology .................................................................... 101 9.3.4.2 Operation and Maintenance Cost for the various Alternatives. ................................. 103 3 9.3.5 Dynamic Prime Cost per m of Water Flow .................................................. 105 9.3.6 Dynamic Prime Cost per kWh of Electricity Generation ............................... 107 April 2012 GITEC / WE Consult / LIBANCONSULT Page iii REPUBLIC OF LEBANON GERMAN – LEBANESE FINANCIAL COOPERATION Council for Development and Reconstruction (CDR) "Jeita Spring Protection Project (JSPP), Phase I" Feasibility Study: Rehabilitation of Transmission Channel 10. OPERATION AND MAINTENANCE ..........................................................