DEPARTMENT OF WATER AFFAIRS GERT SIBANDE DISTRICT MUNICIPALITY REGIONAL BULK INFRASTRUCTURE GRANT PROGRAMME CONTRACT Nº: 49/2010 EERSTEHOEK REGIONAL BULK WATER SCHEME TECHNICAL REPORT August 2012 Revision 7 Prepared by: EMZANSI ENGINEERS (PTY) LTD P.O. Box: Post Net Suite Toll 57 Private Bag X9013 Ermelo 2350 Tel: +27 17 811 6422 Fax: +27 17 811 2919 Gert Sibande District Municipality Chief Albert Luthuli Municipality Cnr Joubert & Oosthuisen Streets 28 Kerk Street ERMELO CAROLINA 2350 1185 Tel: +27 17 801 7000 Tel: +27 17 843 4000 Fax: +27 17 811 1304 Fax: +27 17 843 4001 GERT SIBANDE DISTRICT MUNICIPALITY REGIONAL BULK INFRASTRUCTURE GRANT PROGRAMME EERSTEHOEK REGIONAL BULK WATER SCHEME TECHNICAL REPORT CONTENTS Chapter Description Page 1 INTRODUCTION 4 1.1 Project Title 4 1.2 Project Name 5 1.3 Project Location 5 1.3.1 Project Coordinates 5 1.3.2 Settlements/Villages 5 1.4 Project Objectives 6 1.5 Purpose of Technical Report 6 1.6 Overview of Regional Planning/Studies 7 1.7 Other Water Schemes in the Area 7 2 NEEDS DETERMINATION 8 2.1 Demographics 8 2.1.1 Population 8 2.1.2 Growth projections 8 2.2 Demand/Needs Parameters 11 2.2.1 Service Levels (volumetric) 11 2.2.2 Design Criteria 13 2.2.3 Quality 13 2.3 Related Projects 13 3 ENGINEERING VIABILITY 15 3.1 Options Considered 15 3.1.1 Source 15 3.1.2 Water Quality 16 3.2 Engineering Considerations 16 3.2.1 Planning Norms and Design Parameters 16 3.2.2 Existing Infrastructure 16 3 735 18 3.2.3 Proposed Infrastructure 22 Eerstehoek Regional Bulk Water Scheme – Technical Report AUGUST 2012 3.2.4 Bill of Quantities 25 4 INSTITUTIONAL SUSTAINABILITY 30 4.1 Community Structures 30 4.1.1 Community Structures 30 4.1.2 Level of community awareness and development 30 4.1.3 Level of involvement of women 30 4.1.4 Community Involvement 31 4.2 Water Service Authority 31 4.2.1 Status and proficiency of Local Water Services Authority: 31 4.3 Water Service Provider 32 4.3.1 Section 78 Determination 32 4.3.2 Water Services Provider 33 4.3.3 Consumer/Customer Relation 33 4.4 Legal Requirements 33 4.4.1 Water Use Registration 33 4.4.2 Project Registration with Respect to NEMA 33 5 ECONOMIC/SOCIO ECONOMIC ANALYSIS 34 5.1 Infrastructure 34 5.1.1 Initial Capital Investment Cash Flow 34 5.1.2 Long Term Operational Costs 34 5.1.3 Replacement/Refurbishment Cycle Cost 34 5.2 Social and Socio Economic Opportunities 35 5.3 Training, Facilitation and Capacity Building Scope of Work 35 5.3.1 Community Participation 35 5.3.2 Sustainable Institutions 36 5.3.3 Sanitation Health and Hygiene Promotion 36 5.3.4 Entrepreneurial Development 36 5.4 Labour Based Construction 36 5.5 Permanent Staff Requirements 37 5.6 Cost Estimates 38 6 FINANCIAL VIABILITY 39 6.1 Funding Source 39 6.1.1 Capital Investments 39 6.1.2 Long Term Operation and Maintenance 39 6.2 Cash flow Forecast 41 6.3 Milestone Schedule 41 7 ENVIRONMENTAL ACCEPTABILITY 42 7.1 Natural Environment Impact Assessment 42 7.2 Social Environment 42 Eerstehoek Regional Bulk Water Scheme – Technical Report AUGUST 2012 7.2.1 Relocation Considerations 42 7.2.2 Socio Economic Opportunity Maximisation 42 7.2.3 Environmental Management Plan 42 8 CONCLUSION 43 8.1 Water Supply Requirements 43 8.2 Scope of Works Summary 43 8.3 Funding Summary 44 9 RECOMMENDATIONS 45 10 PROJECT APPROVAL 46 APPENDIXES Annexure A: Locality Plan and Project Footprint Annexure B: Options Considered & Cost Breakdown Annexure C: GSDM Evaluation of Water Resources Report Annexure D: Cash flow (Tabular and Graphical) Annexure E: Detail of ISD Scope of Work Annexure F: Monthly Water Consumption and Possible Income and Expenditure on Completion Annexure G: Project Milestones Annexure H: Application Form for Authorisation in terms of Section 22 of the Environment Conservation Act and Letter of Appointment for EIA. Annexure J: Typical Water Quality Test Results Annexure K: Drawings Eerstehoek Regional Bulk Water Scheme – Technical Report AUGUST 2012 EXECUTIVE SUMMARY PROJECT OBJECTIVES The primary objective of the project is to provide a safe and reliable source of potable water to the communities living in the project areas within Chief Albert Luthuli Municipality (CALM). The secondary objective is to develop institutional capacity within the community to create an awareness of the project and to promote health and hygiene awareness during the project and beyond. The project area covers communities residing in Nhlazatshe, Tjakastad, Avontuur, Mooiplaas, Arhemberg, Malahleka, Khuzuwandle and Elukwatini. COMMUNITY NEEDS The existing infrastructure is no longer adequate to cope with the current water demand in the project area. Gert Sibande District Municipality (GSDM) intends to Upgrade the infrastructure and simultaneously create a regional water scheme that will be able to provide the required demand projected up to year 2032. The scheme will be able to provide adequate water supplies to a population of between 70 010 (2012) and 96 527 (2032) people. EXISTING INFRASTRUCTURE Presently, the communities in the project area (for the infrastructure covered in this Technical Report) are supplied from the Eerstehoek Water Treatment Works. The plant in its current state is not sized to cope with the current demand. In addition, various components of the plant are in need of refurbishment and upgrading. The bulk water distribution system in the form of existing pipelines, pumpstations and reservoirs is also not adequately sized to meet the current and future projected demands. OPTIONS CONSIDERED Presently, the communities in the project area are supplied from Eerstehoek Water Treatment Works. This Technical Report reviews three options, together with the Funding Plan. The three options considered are summarised as follows: Option Description Scope of Works Estimated Total Project Cost(Incl. VAT) Option 1 Water Supply from Upgrade Eesterhoek WTW from a capacity Eerstehoek WTW of 13.4Ml/day to 26Ml/day to serve the (Ekulindeni WTW project area including bulk pipelines, R115 122 779.20 upgraded separately reservoirs and associated pumpstations up under a different BP) to Mooiplaas to the east Option 2 Water Supply from Upgrade Eerstehoek WTW from a capacity Eerstehoek WTW of 13.4Ml/day to 30 Ml/day to serve the R156 550 594.00 entire project area including bulk pipelines, reservoirs and associated pumpstations Option 3 Water Supply from Upgrade Ekulindeni WTW from a capacity of Ekulindeni WTW 4Ml/day to 30 Ml/day including bulk R281 349 500.00 pipelines, reservoirs and associated pumpstations Eerstehoek Regional Bulk Water Scheme - Technical Report 1 AUGUST 2012 PROPOSED INFRASTRUCTURE Option 1 has been recommended on the basis of the lower net present value cost of the total construction cost. The proposed infrastructure for Option 1 comprises the following: Upgrade Eesterhoek WTW from a capacity of 13.4Ml/day to 26Ml/day to serve the project area including bulk pipelines, reservoirs and associated pumpstations up to Mooiplaas to the east. This infrastructure will be subject to this Technical Report. (Upgrade of Ekulindeni WTW will be covered in a different BP). Infrastructure Proposed in this Technical Report The infrastructure thus proposed, in this Technical Report, is as follows: Refurbish and upgrade the existing Theespruit and Komati River Raw Water Abstraction civil works. Refurbish and upgrade the Komati Raw Water Booster Pumpstation to supply the additional demand up to the required 300l/s to the Eerstehoek WTW. Upgrade of Eerstehoek WTW from a capacity of 13.4Ml/day to 26Ml/day. Construction of the following pipelines: o 6.8km long x 450mm diameter uPVC rising main (class 16) from the Komati River Raw Water Pumpstation to Eerstehoek WTW. Upgrading / Equipping of the following pumpstations; o Elukwatini Pumpstation situated at the Eerstehoek WTW from the present 100l/s to 144l/s. o Komati River Raw Water Booster Pumpstation from 50 l/s to 200l/s. o Komati River Abstraction works from 100 l/s to 200 l/s. Construction of the following reservoirs: o A new 1Ml storage reservoir at the Eerstehoek Water Treatment Plant. o 2 No. x 6.5Ml reservoirs (to provide a total capacity of 13Ml) at Inhlazatshe. o A new 0.3Ml reservoir at Avontuur. o A new 0.3Ml reservoir at Malahleni. o A new 0.4Ml reservoir at Mooiplaas. OWNERSHIP CALM is the Water Services Authority (WSA) and Water Services Provider (WSP) in the project area. The project will be implemented by GSDM as the appointed Implementing Agent. On completion of the project the infrastructure shall be owned and maintained by the WSP. Eerstehoek Regional Bulk Water Scheme - Technical Report 2 AUGUST 2012 COST PER CAPITA The estimated present day total project cost is R115 122 779.20 including VAT and the allowances that have been made for contingencies. The breakdown of this cost is as detailed in the table below. Construction and Related Costs Amount a. Refurbish and upgrade the existing Theespuit and Komati River Raw Water Abstraction Works R 2 736 000.00 b. Refurbish and upgrade the existing Komati River Raw Water Abstraction Works and Raw Water Booster Pumpstation supply the required 300l/s demand to eerstehoek WTW (pumpstation equipped with 2No. X 200l/s pumps) R 1 026 000.00 c. Construction of 6.8km long x 450mm diameter uPVC rising main (class 16) from the Komati River Raw Water Pumpstation to Eerstehoek WTW R 5 038 800.00 d. Mechanical and Electrical Works for pumpstation at Eerstehoek including remote monitoring equipment (2 No. pumps x 144l/s @ 400kW at 211m Head) R 1 026 000.00 e.