Tweespruit Technical Report 2016 Rev00 160606Nr.Pdf

CONTRACT No. SCM 34/14/15

FOR

TWEESPRUIT BULK WATER SUPPLY (2ND DRAFT)

TECHNICAL REPORT

REPORT No A0096/RP/02 JUNE 2016

THIS DOCUMENT IS COMPILED BY:

SADC PROJECT CONSULTING (PTY) LTD BUILDING EFFICIENCY 79 HARVEY ROAD ORANJESIG BLOEMFONTEIN, 9301 Tel: +27 (0) 84 836 4565 Fax: +27 (0) 86 641 7003 e-mail: [email protected]

UNDER THE DIRECTION OF:

MANTSOPA LOCAL MUNICIPALITY 38 JOUBERT STREET LADYBRAND 9745

Tel: +27 (0) 51 924 0654 Fax: +27 (0) 51 924 0020 CONTRACT NO. SCM 34/14/15

TWEESPRUIT BULK WATER SUPPLY

TECHNICAL REPORT

MANTSOPA LOCAL MUNICIPALITY

TWEESPRUIT BULK WATER SUPPLY ND (2 DRAFT)

DOCUMENT CONTROL SHEET

Report No: A0096/TR/02

Title: Technical Report

Revision Date Status of Originator Checked Approved No: of Report Issue Initials Signature Initials Signature Initials Signature

Aug 00 Draft PM TN RAR 2015

Jun 01 Draft PM TN RAR 2016

C:\Users\Neko\Desktop\NekoR\SADC Project Consulting\1 Jobs\2017-2018\4 A0111 Tweespruit\5 Technical report\Tweespruit Technical Report 2016 rev00 160606nr.doc SADC PROJECT CONSULTING (PTY) LTD - REPORT NO SCM 34/14/15 June 2016 - i -

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TECHNICAL REPORT

TABLE OF CONTENTS

1. INTRODUCTION ...... 1 1.1 GENERAL ...... 1 1.2 PROJECT LOCATION AND AREA DESCRIPTION ...... 2 1.3 GENERAL NATURE AND EXTENT OF THE PROBLEM WITH REGARD TO THE WATER SUPPLY .. 3 2. EXISTING WORKS ...... 4 2.1 EXISTING WATER SOURCES ...... 4 2.2 EXISTING SUPPLY PIPELINE AND PUMP SYSTEM ...... 6 2.3 EXISTING SERVICE RESERVOIRS ...... 7 2.4 EXISTING WATER PURIFICATION WORKS ...... 9 2.5 EXISTING DISTRIBUTION NETWORK ...... 10 3. POPULATION ...... 11

4. WATER CONSUMPTION ...... 12

5. WATER SOURCE ...... 13 5.1 WATER BALANCE ON BOREHOLE SOURCES ...... 13 5.2 SCENARIO 1 – WATER BALANCE PRIORITISING BOREHOLES SOURCES ...... 14 5.2.1 Current groundwater balance ...... 14 5.2.2 Future groundwater balance ...... 15 5.3 SCENARIO 2 - BALANCE USING LOVEDALE DAM AND BOREHOLES WATER SOURCES ...... 16 5.3.1 Current Lovedale Dam and Boreholes balance ...... 16 5.3.2 Future Lovedale Dam and Boreholes balance ...... 17 6. PROPOSED WORKS ...... 18 6.1 SCENARIO 1 – BOREHOLE SOURCES ONLY ...... 18 6.2 SCENARIO 2 – LOVEDALE DAM AUGMENTED BY BOREHOLE SOURCES ...... 19 7. INTEGRAL PARTS AND ESTIMATED COST ...... 20

8. CONCLUSIONS AND RECOMMENDATIONS ...... 22 8.1 CONCLUSION ...... 22 8.2 RECOMMENDATIONS ...... 22

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LIST OF FIGURES

Figure 1-1: Tweespruit Map ...... 2 Figure 2-2: Elevated Tanks Storage Reservoirs ...... 8

LIST OF TABLES

Table 1-1: Coordinates of the Site ...... 2 Table 2-1: Location of the Water Sources ...... 5 Table 2-2: Existing Reservoirs ...... 7 Table 3-1: census 2001 compared to census 2011 ...... 11 Table 3-2: Population projections ...... 11 Table 4-1: Water Consumption ...... 12 Table 5-1: Current (2015) groundwater balance ...... 14 Table 5-2: Future (2040) groundwater balance ...... 15 Table 5-3: Current Lovedale Dam and Boreholes Balance ...... 16 Table 5-4: Future Lovedale Dam and Boreholes Balance ...... 17 Table 7-1: Scenario 1 Cost Estimate ...... 20 Table 7-2: Scenario 2 Cost Estimate ...... 21

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TECHNICAL REPORT

1. INTRODUCTION SADC Project consulting was appointed by Mantsopa Local Municipality to investigate and design a sustainable bulk water supply system to Tweespruit area.

1.1 GENERAL

Mantsopa Local Municipality is located in Free State Province. It manages 5 towns namely Excelsior, Hobhouse, Ladybrand, Thaba Patchoa and Tweespruit. This report focuses on water supply to Tweespruit.

Tweespruit is constituted by 3 residential areas namely Dawiesville, Borwa, and Kgotha plus Tweespruit town. Tweespruit has Stats SA population figure of 5787 in 2011. It is located to the north of Ficksburg and south-west of Bloemfontein.

The following references have been used in compiling this report; i) Technical guidelines for the development of water and sanitation infrastructure, 2004 (DWAF) ii) Mantsopa Local Municipality Integrated Development Plan 2014/2015 Review iii) Census 2011 (Stats SA) iv) Guidelines For Human Settlement Planning And Design (Redbook), 2005 (Department of Housing) v) Water Services RBIG Technical Feasibility Study (Phase 2A) For Mantsopa Local Municipality Bulk Water Supply; Final Draft; June 2015 prepared by Phetogo Consulting for Department of Water Affairs vi) Progress Report 3: Groundwater source verification and boreholes drilling – Tweespruit and Letshabile for Mantsopa Local Municipality in the Free State Province by Kimopax dated April 2015 vii) Mantsopa Local Municipality – Excelsior, Tweespruit and Hobhouse units - Bulk Water Supply: Intervention list to improve the existing own water supply systems by BVi for Mantsopa Local Municipality dated December 2007

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1.2 PROJECT LOCATION AND AREA DESCRIPTION

The town of Tweespruit in Mantsopa Local Municipality near the farming town of Excelsior is part of the Thabo Mofutsanyane District Municipality of the Free State Province. Tweespruit is a small dairy farming town in the Free State province of South Africa. The town lies 27km east of Thaba Nchu and 47km north of Hobhouse. The co-ordinates of the study area are tabled below.

Table 1-1: Coordinates of the Site

Latitude (South) Longitude (East)

Deg Min Sec Deg Min Sec

29 11 17.28 27 01 45.97

Figure 1-1: Tweespruit Map

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1.3 GENERAL NATURE AND EXTENT OF THE PROBLEM WITH REGARD TO THE WATER SUPPLY

There is a general shortage of water in the Tweespruit area mainly due to the following reasons:

i) Lovedale dam owners (local farmers) and the municipality are in dispute and the municipality is not allowed access to extract surface water; ii) Lovedale dam, if operational, only supplies 6 months-worth of extraction and is therefore not a reliable source; iii) The current (year 2015) water demand exceeds groundwater (boreholes) yield by 347.5kl/d (4.0l/s); iv) The future (year 2040) water demand exceeds groundwater (boreholes) yield by 371.9kl/d (4.3l/s); v) The current (year 2015) water demand exceeds combination of surface water (Lovedale dam) and groundwater (boreholes) yield by 114.6kl/d (1.3l/s); vi) The future (year 2040) water demand exceeds combination of surface water (Lovedale dam) and groundwater (boreholes) yield by 139kl/d (1.6l/s); vii) Borehole number BHTS20 is connected and awaiting CENTLEC to connect bulk electricity network; viii) Pipeline between borehole number BHTS02 and elevated tank is not buried and exposed thereby damaged; ix) The AC and steel pipes supplying water from Lovedale dam are also obsolete and need urgent attention. x) Booster pump station and pumping main at Lovedale dam were installed in 1959 and require renewal.

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2. EXISTING WORKS

2.1 EXISTING WATER SOURCES

The main water source for the Tweespruit area is the Lovedale dam located 9.0km south-east of the purification works. The dam is owned by a group of farmers outside of the Tweespruit area approximately 9km south-east of Borwa. There is an agreement between the municipality and the farmers to abstract 85Ml/a from the dam for municipal use. This is not adequate to meet the water demands of Tweespruit. Lovedale dam is currently not working due to a dispute between the municipality and the dam owners on electricity consumption and metered water.

The second sources of water for the area are four boreholes. The following are the characteristics of such boreholes:

 The first borehole is numbered BHTS-02 in Borwa near the church and the stadium made up of a permanent building structure comprising of face-brick. The borehole yield is 1.5l/s and pumps groundwater to the elevated tank in Borwa. The borehole is currently not working due to damaged exposed bulk pipeline.

 The second borehole is numbered BHTS-03 and located in Dawiesville next to the school and the main road constructed using white coloured chromadek and galvanized steel sheet and buried in the ground. The borehole yield is 1.0l/s and pumps groundwater to the water- treatment-works in town. The borehole is currently working.

 The third borehole numbered BHTS-05 is located at the Golf sports club with yield capacity of 3.0l/s. The borehole supplies the pressed steel tank in the town area through 110mm uPVC pipeline. The borehole is currently working.

 The fourth and the last borehole is numbered BHTS-20 and located next to the railway line in Dawiesville and supplies groundwater to the water-treatment-works in town. The borehole yield is 0.6l/s. The borehole is currently not working due to CENTLEC electricity connection requirement.

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The table below shows the location of the water sources

TABLE 2-1: LOCATION OF THE WATER SOURCES

Source Name Location Yield Yield

(l/s) (kl/d)

Lovedale Dam -29.24472 S, 27.07736 E 2.7 232.9

Borehole BHTS02 -29.19085 S, 27.03925 E 1.5 129.6

Borehole BHTS03 -29.19884 S, 27.03248 E 1.0 86.4

Borehole BHTS05 -29.19234 S, 27.02118 E 3.0 259.2

Borehole BHTS20 -29.18644 S, 27.04076 E 0.6 51.8

TOTAL 8.8 759.9

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2.2 EXISTING SUPPLY PIPELINE AND PUMP SYSTEM

It has been established that there is a pumping station consisting of 2 pumps that operate in parallel at the Lovedale dam. This supplies 16l/s which amounts to 1200kl/d on 20 hours of pumping. This is notwithstanding the fact that there is a limit of abstraction which equates to 233kl/d. The delivery head of the two pumps is approximately 100m.

The pump station at Lovedale dam supplies raw water to the treatment plant which is 0.5km to the eastern side of Tweespruit town. The pumping main from the dam to the raw water tanks is a combination of Asbestos Cement and Steel of 150mm in diameter and is approximately 9km long. These pipes have an estimated age of 56years and are obsolete. Replacement of the pipeline is necessary. The pipe line is however still in use.

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2.3 EXISTING SERVICE RESERVOIRS

The clean water from the treatment plant near the town area is pumped to the two ground reservoirs in town which have capacities of 319.6kl and 1319kl for the pressed steel tank and concrete tank respectively. Water is also pumped from the concrete reservoir into the 65.4kl raised (approximately 10m high) water tank at the same location. This tank supplies only the town area which cannot be supplied by ground reservoirs because of the elevation differences.

Water from the 2 ground reservoirs then gravitates directly to the reticulation of Daviesville as well as to the raised pressed steel tank (approximately 10m high) in Borwa which has a storage capacity of 1046kl. The starage tank in Borwa supplies the Borwa and Kgotha areas. There is an old 136.2kl tank in Borwa which is no longer being used and was replaced by the 1046kl. The old tank has leakages and would not be usable if there was a need.

TABLE 2-2: EXISTING RESERVOIRS

Reservoir Capacity Total Supply area Required Adequecy Type of Condition – Location (kl) capacity for capacity reservoir Expected the area useful life

Tweespruit town 1319kl 1638.6kl Daviesville, Borwa *1004.5kl Adequete Concrete Good – 25years and Kgotha 319.6kl Pressed steel Good – 25years

Tweespruit town 65.4kl 65.4kl Tweespruit town **14.8kl Adequete Pressed steel Good – 25years

Borwa and 1046kl 1046kl Borwa and *873.5kl Adequete Pressed steel Good – 25years Kgotha Kgotha

Borwa 136.2kl 136.2kl - - - Pressed steel Leaking, not in use

*Capacity calculated using 36 hour storage for water pumped from multiple sources

**Capacity calculated using 4 hour storage for elevated tank storage

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FIGURE 2-1: ELEVATED TANKS STORAGE RESERVOIRS

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2.4 EXISTING WATER PURIFICATION WORKS

The treatment plant near the town area has the capacity to treat 1200kl/d on a 20hr running period. The plant is operated daily by an operator who switches on and off. Two pumps are installed and these have a capacity to deliver from 24 to 72m3/hr to the reservoirs in town at delivery heads from 38 to 27m.

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2.5 EXISTING DISTRIBUTION NETWORK

There is a bulk water reticulation system in all the areas of Tweespruit.

Borwa and Kgotha receive water from the town reservoirs through the raised reservoir in Borwa. It also receives water directly into the reticulation from the borehole near the church and the stadium. The area is fully reticulated with water.

Dawiesville receives water from the town reservoirs and from the borehole to the south of the area directly into the reticulation. The area is also fully reticulated with water and sewer systems.

Tweespruit town receives water from the raised water tank in town into its reticulation system. It also has a full water and sewer reticulation system.

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3. POPULATION Stats SA (census 2001) indicated that total Tweespruit population was 4329, whilst Stats SA (census 2011) further highlighted that total Tweespruit population was 5787, translating into a population growth of +1428, which implies a percentage increase of +33%. Such a population change is represented on table 3-1 below.

TABLE 3-1: CENSUS 2001 COMPARED TO CENSUS 2011 Census Census growth or % growth Town Sub-place 2001 2011 decline (2001-2011) 5 6 1 2 3 4 4-3 (5/3)*100 Tweespruit town 1057 1044 -13 -1% Tweespruit Borwa - Dawiesville - Kgotha 3302 4743 1441 44% Tweespruit total 4359 5787 1428 33%

The approach followed in this analysis on table 3-2 will be similar to the Water Services RBIG Technical Feasibility Study (Phase 2A) For Mantsopa Local Municipality Bulk Water Supply; Final Draft; June 2015 prepared by Phetogo Consulting for Department of Water Affairs on page 6 to page 9, which projects population growth rate of 0.12% per annum.

TABLE 3-2: POPULATION PROJECTIONS Population growth rate Households Area @ 0.12% per annum (census 2011) 2011 2015 2020 2025 2030 2035 2040 Tweespruit town 123 1044 1049 1055 1062 1068 1074 1081 Borwa - Dawiesville - Kgotha 1635 4743 4766 4794 4823 4852 4882 4911 Total 1758 5787 5815 5850 5885 5920 5956 5992

The population is therefore estimated to be 5992 by the year 2040.

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4. WATER CONSUMPTION The water consumption for the entire Tweespruit area was estimated using the population figures and the per capita consumption figures. The recommended 150 litre per capita per day demand figure from Technical guidelines for the development of water and sanitation infrastructure was used to estimate the Average Annual Daily Demand (AADD).

TABLE 4-1: WATER CONSUMPTION

Area per AADD capita 2015 2015 2020 2020 2025 2025 2030 2030 2035 2035 2040 2040 consump. population population population population population population (l/c/d) 1 2 3 4 5 6 7 8 9 10 11 12 13 (1*2)/1000 (1*4)/1000 (1*6)/1000 (1*8)/1000 (1*10)/1000 (1*12)/1000 Tweespruit 150 1049 157,4 1055 158,3 1062 159,3 1068 160,2 1074 161,1 1081 162,2 (kl/d)

Tweespruit 1,8 1,8 1,8 1,9 1,9 1,9 (l/s)

Borwa - 150 4766 714,9 4794 719,1 4823 723,5 4852 727,8 4882 732,3 4911 736,7 Dawiesville - Kgotha (kl/d)

Borwa - 8,3 8,3 8,4 8,4 8,5 8,5 Dawiesville - Kgotha (l/s)

TOTAL 872,3 877,4 882,8 888,0 893,4 898,8 (kl/d)

TOTAL 10,1 10,2 10,2 10,3 10,3 10,4 (l/s)

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5. WATER SOURCE

5.1 WATER BALANCE ON BOREHOLE SOURCES

The water balance was carried out using three scenarios. The scenarios were compared using current water demand and future water demand. The overall cost and sustainability of each scenario shall however be the deciding factors to the choice of the proposed works. The scenarios were as follows

i) Balance prioritising boreholes sources and demand. This was done because the Municipality has an agreement with the Lovedale dam owners to obtain a maximum of 85Ml/a. The Municipality is in dispute with the Lovedale Dam owners over electricity account payments. This restriction makes the dam an unfavourable option for water source. If the borehole sources can sustain the water demand, then there would be no need for the Dam source. ii) Balance prioritising Lovedale Dam water source against demand. This scenario would ensure that if the Lovedale dam water is adequate using the existing agreement of 85Ml/a, then there would be no need for additional infrastructure on other water sources. The only cost incurred would be the upgrade of the pumping station and pipelines. iii) If deficit persists in utilising groundwater (borehole) sources and surface water (Lovedale Dam) source, it becomes imperative to investigate sources outside Tweespruit area.

A third scenario that does not necessarily require a water balance would be to obtain a different source altogether. This source should have a yield that can meet the total future water demand of the Tweespruit area.

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5.2 SCENARIO 1 – WATER BALANCE PRIORITISING BOREHOLES SOURCES

5.2.1 Current groundwater balance

The scenario, on table 5-1, indicates that the current demand of 10.1l/s (874.5kl/d) can only be balanced by yield of 6.1l/s (527.0kl/d), which results in a current deficit of 4.0l/s (347.5kl/d). The figures imply that current groundwater sources are not adequate.

TABLE 5-1: CURRENT (2015) GROUNDWATER BALANCE Area Sources Current Yield Surplus (+) Year 2015 or Demand Deficit (-) AADD Tweespruit BHTS03 86,4 (kl/d) BHTS05 157,4 259,2 +240,0 BHTS20 51,8 Tweespruit BHTS03 1,0 (l/s) BHTS05 1,8 3,0 +2,8 BHTS20 0,6 Borwa, Dawiesville and Kgotha (kl/d) BHTS02 717,1 129,6 -587,5 Borwa, Dawiesville and Kgotha (l/s) BHTS02 8,3 1,5 -6,8 TOTAL (kl/d) 874,5 527,0 -347,5 TOTAL (l/s) 10,1 6,1 -4,0 * Yield values were converted using 20hours pumping period per day

Given a shortfall of 4.0l/s (347.5kl/d), as shown on table 5-1, a need to investigate groundwater sources outside Tweespruit is apparent.

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5.2.2 Future groundwater balance

The scenario, on table 5-2, indicates that the future demand of 10.4l/s (898.9kl/d) can only be balanced by yield of 6.1l/s (527.0kl/d), which results in a future deficit of 4.3l/s (371.9kl/d). The figures imply that future groundwater sources are not adequate.

TABLE 5-2: FUTURE (2040) GROUNDWATER BALANCE Area Sources Future Yield Surplus (+) Year 2040 or Demand Deficit (-) AADD Tweespruit BHTS03 86,4 (kl/d) BHTS05 162,2 259,2 +235,2 BHTS20 51,8 Tweespruit BHTS03 1,0 (l/s) BHTS05 1,9 3,0 +2,7 BHTS20 0,6 Borwa, Dawiesville and Kgotha (kl/d) BHTS02 736,7 129,6 -607,1 Borwa, Dawiesville and Kgotha (l/s) BHTS02 8,5 1,5 -7,0 TOTAL (kl/d) 898,9 527,0 -371,9 TOTAL (l/s) 10,4 6,1 -4,3 * Yield values were converted using 20hours pumping period per day

Given a shortfall of 4.3l/s (371.9kl/d), as shown on table 5-2, a need to investigate groundwater sources outside Tweespruit is apparent.

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5.3 SCENARIO 2 - BALANCE USING LOVEDALE DAM AND BOREHOLES WATER SOURCES

5.3.1 Current Lovedale Dam and Boreholes balance

The scenario, on table 5-3, indicates that the current demand of 10.1l/s (874.5kl/d) can only be balanced by yield of 8.8l/s (759.9kl/d), which results in a current deficit of 1.3l/s (114.6kl/d). The figures imply that current Lovedale Dam and Boreholes sources are not adequate.

TABLE 5-3: CURRENT LOVEDALE DAM AND BOREHOLES BALANCE Area Sources Current Yield Surplus (+) Year 2015 or Demand Deficit (-) AADD Tweespruit BHTS03 86,4 (kl/d) BHTS05 259,2 BHTS20 51,8 157,4 +472,9 Lovedale 232,9 dam (85000kl/a) Tweespruit BHTS03 1,0 (l/s) BHTS05 3,0 BHTS20 0,6 1,8 +5,5 Lovedale 2,7 dam (85000kl/a) Borwa, Dawiesville and Kgotha (kl/d) BHTS02 717,1 129,6 -587,5 Borwa, Dawiesville and Kgotha (l/s) BHTS02 8,3 1,5 -6,8 TOTAL (kl/d) 874,5 759,9 -114,6 TOTAL (l/s) 10,1 8,8 -1,3 * Yield values were converted using 20hours pumping period per day

Given a shortfall of 1.3l/s (114.6kl/d), as shown on table 5-3, a need to investigate other sources outside Tweespruit is apparent.

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5.3.2 Future Lovedale Dam and Boreholes balance

The scenario, on table 5-4, indicates that the future demand of 10.4l/s (898.9kl/d) can only be balanced by yield of 8.8l/s (759.9kl/d), which results in a current deficit of 1.6l/s (139.0kl/d). The figures imply that future Lovedale Dam and Boreholes sources are not adequate.

TABLE 5-4: FUTURE LOVEDALE DAM AND BOREHOLES BALANCE Area Sources Future Yield Surplus (+) Year 2040 or Demand Deficit (-) AADD Tweespruit BHTS03 86,4 (kl/d) BHTS05 259,2 BHTS20 51,8 162,2 +468,1 Lovedale 232,9 dam (85000kl/a) Tweespruit BHTS03 1,0 (l/s) BHTS05 3,0 BHTS20 1,9 0,6 +2,7 Lovedale 2,7 dam (85000kl/a) Borwa, Dawiesville and Kgotha (kl/d) BHTS02 736,7 129,6 -607,1 Borwa, Dawiesville and Kgotha (l/s) BHTS02 8,5 1,5 -7,0 TOTAL (kl/d) 898,9 759,9 -139,0 TOTAL (l/s) 10,4 8,8 -1,6

Given a shortfall of 1.6l/s (139.0kl/d), as shown on table 5-4, a need to investigate other sources outside Tweespruit is apparent.

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6. PROPOSED WORKS The three scenarios mentioned in section 5 are hereby evaluated to come up with the best alternative for the water supply of Tweespruit.

6.1 SCENARIO 1 – BOREHOLE SOURCES ONLY

In this option, it is proposed that the water supply for Tweespruit be exclusively from the borehole sources. This will release the municipality from reliance on the Lovedale dam. The Dam has a limitation in abstraction and this will strain the municipality. The infrastructure from the dam is obsolete and require replacement. The municipality is in dispute with the Lovedale Dam owners. This further justifies not to rely on the dam.

The work required under this option shall be investigating an area outside Tweespruit as possible groundwater supply source and equipping such an area with new boreholes and pipeline to connect to the storage facilities.

Advantages

 No reliance on the Lovedale dam which has abstraction limits

Disadvantages

 Enforcing use as per recommendations is sometimes difficult

 Multiple sources required to be maintained

The major works to be carried out are as follows

 Hydro-census (borehole investigations)

 New boreholes

 Pipeline connecting boreholes to storage facilities

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6.2 SCENARIO 2 – LOVEDALE DAM AUGMENTED BY BOREHOLE SOURCES

In this option, it is proposed that the Lovedale dam water source be continued with augmentation from the existing boreholes. Rehabilitation of the bulk pipeline from the dam to the treatment plant shall be required. Construction of a new pump station and pumping main shall be required.

Advantages

 The source is a surface water source which is reliable

Disadvantages

 The 9km bulk pipeline is obsolete and requires replacement

 The source does not currently supply enough water for the needs of Tweespruit as per the agreements in place

 Supplementary water sources shall still be required

 New pump station and pumping main will be required as the existing pump station is 57 years old

The major works to be carried out are as follows

 Rehabilitation of the 9km bulk pipeline

 New pump station and pumping main

 Investigating an alternative surface water source

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7. INTEGRAL PARTS AND ESTIMATED COST Below are the cost estimates of scenario 1

TABLE 7-1: SCENARIO 1 COST ESTIMATE Item Description Unit Qty Rate (R') Amount (R') 1 Hydro-census, borehole investigations outside Tweespruit Sum 1 500 000.00 500 000.00

2 Supply and installation of new production borehole to meet the No. 5 450 000.00 2 250 000.00 shortfall of 4.3l/s

3 Raw water pipeline of uPVC class 16 at 200mm diameter km 10 2 285 000.00 22 850 000.00 connected from boreholes to reservoirs in town

Total Project Cost 25 600 000.00 Ps&Gs 10% 2 560 000.00 Subtotal A 28 160 000.00 Contingencies 10% 2 816 000.00 Sub-total B 30 976 000.00 CPA 8% 2 478 080.00 Sub-total C 33 454 080.00 Professional fees 10% 3 345 408.00 Sub-total C 36 799 488.00 VAT 14% 5 151 928.32 TOTAL SCENARIO 1 41 951 416.32

Below are the costs for scenario 2

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TABLE 7-2: SCENARIO 2 COST ESTIMATE Item Description Unit Qty Rate (R') Amount (R') 1 Replacement of the 150mm pipeline from Lovedale dam to km 9 2 285 000.00 20 565 000.00 Tweespruit WTW with a 200mm uPVC class 12 2 New pump station, pumping gear, pump house and new pumping Sum 1 13 000 000.00 13 000 000.00 main 3 Investigating new surface water source Sum 1 2 000 000.00 2 000 000.00

Total Project Cost 35 565 000.00 Ps&Gs 10% 3 556 500.00 Subtotal A 39 121 500.00 Contingencies 10% 3 912 150.00 Sub-total B 43 033 650.00 CPA 8% 3 442 692.00 Sub-total C 46 476 342.00 Professional fees 10,0% 4 647 634.20 TOTAL PROJECT COSTS (EXCL V.A.T) 51 123 976.20 Value added tax 14% 7 157 356.67 TOTAL SCENARIO 2 58 281 332.87

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8. CONCLUSIONS AND RECOMMENDATIONS

8.1 CONCLUSION

 Taking into consideration the extent of the remedial works and rehabilitation required it can be concluded that scenario 1 and/or scenario 2 remedial actions can be applied to mitigate further water scarcity.

8.2 RECOMMENDATIONS

 It is recommended that scenario 1 and scenario 2 be phased over time as the systems co- exist.

CONTRACT NO. SCM 34/14/15

TWEESPRUIT BULK WATER SUPPLY

TECHNICAL REPORT