GOAL MALAWI-DFID UNICEF WASH PROJECT
IN PARTENERSHIP WITH MALAWI
GOVERNMENT
BOREHOLE REHABILITATION TERMS OF
REFERENCE AND TECHNICAL SPECIFICATIONS
MWL/GOAL/UNICEF/2015/037
LOCATION OF WORKS:
CHIKWAWA AND NSANJE DISTRICTS
2nd December,2015
GOAL Malawi- Borehole Rehabilitation Tender-Chikwawa and Nsanje.
GOAL is an international non-governmental humanitarian organization whose mission is to work with the most
vulnerable in bringing about their empowerment and ensuring that they have access to fundamental rights of life,
including but not limited to adequate shelter, food, water and sanitation, health care and education
GOAL Malawi commenced its operations in Malawi in April,2002,and has since implementing development
interventions in Nsanje, Balaka and Chikwawa districts. The overall objective of GOAL Malawi is to make a
measurable contribution towards livelihoods and health, food security of the most vulnerable communities of
Malawi through implementation of health, WASH, livelihoods and climate change adaptation activities. GOAL
Malawi also responds to Disasters such as floods and drought.
ABOUT THE PROGRAM COOPERATION AGREEMENT.
This project will support vulnerable rural communities to access safe and dignified WASH services that generate
income to assist poverty reduction at village level. This project will focus on communities and schools in Nsanje
and Chikwawa Districts. This project will simultaneously improve WASH services in three ways:
1.
2.
3.
Improving services provision through enhancement community capacity to operate maintain WASH
facilities.
Increasing service support through community advocacy and strengthening private sector to repair WASH
facilities
Strengthening the capacity of District Councils WASH provision.
There will also be a mechanism for scaling up and replication of the Demand Driven Approach(DRA).The PCA will
also aim to link the WASH activities with the private sector i.e. Linking shop owners dealing in borehole parts to the
communities and Area Mechanics. This project will also strengthen existing WASH resources to assure greater
value for money
GOAL Malawi with funding from DFID through UNICEF is inviting eligible borehole contractors to submit tender
proposal for borehole rehabilitation of 70 boreholes in Chikwawa and Nsanje which shall include the following
details:1.
2.
3.
4.
Company profile
Business registration certificate-Scanned copy
Certificate of Incorporation- Scanned Copy
Current National Construction Industry Council Certificate( NCIC)
5.
6.
7.
8.
9.
10.
11.
12.
Work experience of similar nature
Capacity and personnel details with Curriculum Vitaes
Recent three months bank statements
Tax clearance Certificate
List of equipment to enable the company carry out the borehole rehabilitation works
Three verifiable work reference of similar nature with contactable e-mail addresses and phones
Priced Bills of Quantities for the borehole rehabilitation works
An activity schedule to explain in step by step on how your company intends to execute the borehole
rehabilitation works.
Reference MWL/GOAL/UNICEF/2015/037 should be written on the sealed envelope containing your offer. If
submitting your offer by email, this should be in the subject line.
Tender Documents can be collected from our offices from
GOAL Malawi offices
Internal Procurement Committee
Opposite the Story Workshop
Symthe Road,
Sunnyside
Blantyre
All interested bidders can request bid documents through the following email address: [email protected]
Submitting hard copy offers:
Completed and sealed tender documents should be submitted into GOAL Malawi tender box at the reception by
2nd December,2015.
Submitting soft copy offers:
Completed tender documents should be submitted Via email to [email protected] not later than 12 noon
on 2nd December, 2015
Borehole Rehabilitation
This is when a defunct borehole is reconditioned and given a new lease of life. Before a borehole is
recommended for rehabilitation an assessment is conducted to check on the following:1.
When was the borehole drilled and how long has it been working
2.
Water Quality- physical; odour
3.
Yield of the borehole – how long does the borehole supply water per day
4.
Depth of the borehole- ask the community the number of pipes that were installed boreholes
below 20 metres are not recommended for rehabilitation as they are in the shallow well
category and they are prone to drying up
5.
Distance from any source of pollution- boreholes located in swampy areas are rejected as they
are at a risk of contamination
6.
Acceptability by the community to use the water point
If you think the borehole can be rehabilitated from your initial assessment the borehole is then
subjected to the following 6 successive phases
1.
Removal of pump head and if necessary fishing out of all objects stuck in the borehole the
remove all the down hole components
2.
Re-develop the borehole
3.
Conduct pumping test and water quality analysis i.e. measure ph and EC
4.
Superstructure demolition and construction
5.
Installation of the pump
6.
Basic training (VLOM) of the pump caretakers
However step 4 to 6 shall be achieved only if pumping test is successful and results of water quality are
positive – EC and Ph.
Removal of existing pump equipment
Ordinary tools are required –afridev spanner and appropriate fishing tools. Remove the pvc pipes and
ensure that the borehole is free from any obstructions
1.
Air compressor ( a small compressor like those used in the road construction jack hummers)
2.
Well sounder
3.
2 good stop watches
4.
A 100 meter measuring tape.
Borehole Development Procedure:
1.
Measure the Static Water Level before you begin the water airlifting
2.
Measure the borehole depth
3.
The borehole shall have all the water airlifted and surged for a minimum of two hours .This will
ensure that all the silt and debris in the annulus are removed.
4.
Measure the Static Water Level after the development
5.
Measure the borehole depth after the development
The surging also opens up blocked aquifers. Do these processes alternately until the water is clean
Pumping Test:
1.
It is necessary that we should conduct yield test on all boreholes that we are rehabilitating so
that we have all necessary behavior of each borehole.
2.
Minimum discharge rate of all the boreholes is 0.25 litre per second for a period of 4 hours.
3.
The borehole will then over pumped for two hours at 0.25litres per second.
4.
The drawdown shall not go below 4 metres from the bottom of the borehole.
The contractor will use standard pumping test forms for Borehole Pumping Test where all yield rates
will be recorded accordingly.
Borehole Recovery:
The will be recommended for rehabilitation when the recovery is achieved at 90% of the with 60
minutes
A dipper will be operated through a conduit pipe of 25mm suspended in the borehole. Measurements
will be taken at pre-set intervals and recorded on a standard pumping test form for recovery
Community Participation:
This is Community WASH Project and the community will take a lead in the planning, construction
supervision..Communities will supply building materials and the contractor shall make sure that the
quality is good. Fine and coarse aggregates shall be clean and durable granulites black and white
colours. The communities will supply 3000 small bricks or 1000 large bricks, two tons of river sand and
one ton of aggregate stones.
Construction of Civil Works:
The contractor will have all the designs on site and shall be laminated and produced any time the
Construction Supervisors and the Water Point Committee ask for them. The designs should be displayed
on a prominent position.
A copy of this TOR and other relevant documentation must be kept at each site to ensure uniformity of
the structures to be constructed The contractor shall construct a new and durable apron and drainage.
The contractor is advised to use Ordinary Portland Cement ( OPC).Toe contractor shall construct apron
and drainage by using ratio of 1:2:4 around all productive boreholes. The contractor will use re-inforcem
ent wire mesh of A98 size
The contractor will be required to excavate the construction position to 400 and lay a strong foundation
which shall be blinded with 1 part cement and 8 parts sand. The contractor shall also construct a cement
pavement around the apron and drainage which shall be excavated to 400mm.
The contractor shall use approved shatters and moulds for concrete pouring and casting. The shatters
shall be straight and true. The contractor shall ensure that the concrete is well compacted if possible
with a vibrator or compactor if not possible a heavy rummer. The apron and drainage shall be trowled to
give a smooth finish.
Flood proof Designs:
In areas that are prone to flooding the contractor shall raise the apron to prevent flooding. Chikwawa
and Nsanje is prone to flooding disasters.
Curing:
The contractor shall ensure that the civil works structures that have been completed should be properly
cured by doing the following:1. Pouring water on the apron and drain. Plug the apron and drainage
2. Pouring of water on the apron and drainage by the community for 5 days twice daily.
3. If they have hessian sacks communities can cover the apron and drainage while pouring water
on the structures.
The structures is fully cured after 14 days there after the communities can start using the pump.
Pump installation:
1.
A pump is installed at a depth of 10metres below the dynamic water level
2.
Pump installation is installed in the presence of the pump caretakers as part of the initial
training as indicated in the Bills of Quantities.
3.
Pump spanners and training manual is the handed over to the Water Point Committee as part of
the commissioning process.
Borehole Security:
The contractor shall install a borehole security guard to minimize cases of vandalism.The contractor will
handover the keys to the water point committee and also explain how the borehole security lock works
before demobilization at each site
Comment : On borehole that has been rehabilitated fully and given new lease of life the pump is
expected to be in use for 15-20 years
Key Personnel:
The contractor shall on this rehabilitation works have experienced and capable personnel to run the
project on its behalf such as follows:1. Site Manager with a minimum of a Diploma in Water Works or Civil Engineering with 5 years
experience
2. Building Supervisor with a minimum of a Diploma in either of the following: Malawi Crafts
Certificate Grade 1,City and Guilds Grade 1 with 5 years experience
3. Pumping Test /Development Supervisor at least Malawi School Certificate of Education with 5
years experience.
Health and Safety:
The contractor shall ensure that all workers on site have protective wear such as overalls,gumboots or
leather boots, rubber gloves and helmets.
Each construction site shall be cordoned of and clearly marked with red and white tape to prevent any
accidents during construction
Child Protection:
The contractors should be made aware that GOAL Malawi subscribes to Child Protection Policy.GOAL
Malawi recognizes the rights of all children and should b protected from harm in accordance ith Unitd
Nations Convention on the Rights of the Child It is in the same vein that contractor shall desist for using
child labour on its activities. Any reported child abuse will warrant termination of contract
Compliance to Laws of Malawi
The contractor shall comply to Laws of Malawi
Reporting for Payment:
The contractor shall include the following documents for payment:
1. Borehole Rehabilitation Completion Form
2. Pumping Test Forms
3. Pumping Test Recovery Forms
4. Apron and construction Forms
5. 4 photos for site taken at 4 strategic positions as will be advised
6. Invoice of completed works
Nsanje
#
Name of Water Point
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Liciano
Njazi
Mkhuche
Lundu
Nyanjiwa school
Chingwe
Mbeta
Mbeta
Kasenga
Magulugulu
Magulugulu
Mbangu
Mbangu
Chapilira
Nsangalambe
Nsangalambe
Malemia HQS
Alufandika
Biyasoni
Musiyankhuni
Dilesi
Chibuli
Kapombeza
Fainda
Njiza School
Nkapako School
Kalumbi
Tipa
Kampila
Guta
Group Village Headman
( GVH)
Traditional Authority
(TA)
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Malemia
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Ndamera
Makoko
List of Sites for Borehole Rehabilitation for Chikwawa
#
Name of Location
Group Village Head
Traditional Authority
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Malamba School
Chokwe
Kalusa
Mkamaniza
Nyangu 1
Nyangu 2
Mbiya School
Matchado
Chindoko
Chindoko 4
Jesenalo
Koka School
Dolo Heath
Thudzu
Sidigo
Mafunga
Mkanidza
Masamba
Tsamaya
Kutulo
Malemia
Liyani
Khutchubba
Mwananjobvu School
Fole
Steven
Gonyo
Chipwaila H/C
Sinoya
Tomadalo
Demanyondo
Mandele
Chipondeni
Chindoko 5
Zalera
Nyamithazi
Ndandika
Lazaro
Ndampanga
Khisimisi
Saopa
Masache
Mkumaniza
Mkamaniza
Chambuluka
Mkamaniza
Mphonde
Mphonde
Chindoko
Chindoko
Chondoko
Nyambiro
Lombe
Thudzu
Sidigo
Mafunga
Mkamanidza
Masamba
Zayela
Chipakudza
Malemia
Jossa
Jassa
Mwananjobvu
Matengambiri
Chapomoka
Gonyo
Ngabu
Masache
Ngabu
Ngabu
Ngabu
Ngabu
Masache
Masache
Masache
Ngabu
Ngabu
Ngabu
Masache
masache
Masache
Masache
Ngabu
Ndakwera
Ndakwera
Lundu
Lundu
Ngabu
Ngabu
Ngabu
Ngabu
Ngabu
Ngabu
Ngabu
Ndakwela
Ngabu
Ngabu
Ngabu
Ngabu
Ngabu
Ngabu
Ngabu
Masache
Ndakwela
Masache
Masache
Suweni
Nkhwangwa
Kutama
Nyambilo
Chipondeni
Zalela
Zalera
Zalera
Lombe
Ndakwela
Lombe
Mtayamanja
GOAL MALAWI BOREHOLE PUMPING TEST FORM
Borehole Number
Village
Group Village
Trad. Authority
District
Contractor
Date
Start time
End Time
Time
(min)
Water
Level
Drawdown
in meters
20Liter
bucket Full
Time in min
Instant Yield
Quantity in
Liters/Second
Constant
discharge at
0.25Liters /sec
Remarks
Water Quality and other
description of the water which
should include colour and odour
Conductivity ( EC):
pH:
Temperature :
Salty Yes/No:
Boreholes Details
Depth:
(Before)
Static Water Level:
Casing size:
Depth:
(After)
Static Water Level:
Borehole Yield:
Litres /Sec
Contractor’s Staff
Name:
Signature:
Position:
Cell Number:
GOAL Staff
Name:
Position:
Cell Number:
GOAL MALAWI PUMPING TEST RECOVERY FORM
Borehole Number
Village
Group Village
Trad. Authority
District
Contractor
Date
Start time
End Time
Time in (min)
Water Level
Time in (min)
Water Level
Remarks
Contractor’s Staff
Name:
Position:
Cell:
GOAL Staff
Name:
Position
Cell:
GOAL MALAWI-BILLS OF QUANTITIES,BOREHOLE REHABILITATION
#
DETAILS
UNIT COST
QUANTITY
TOTAL AMOUNT
Borehole Rehabilition Equipment
1
Afridev pump Revision 5 Model 5
1
2
Raising mains
10
3
Cement
kg
4
Re-enforcement wire A-98
2 sq metre
5
Solvent Cement
500mls
6
Cleaning Fluid
500mls
7
Consumables
Lump sum
8
Borehole Lock-PumpGuard
Acitivity Cost Breakdown
Mobilization of equipment, manpower and
materials
Site preparation before and after borehole
rehabilitation
1
Lump sum
12
Removal of pump head
Removal of downhole components, raising
mains, rods and fishing out of any stuck
objects in the casings
13
Borehole Development
Hours
14
Pumping Test
Hours
15
Hours
16
Pumping Test Recovery
Demolishing of old civil works and pedestal
removal
17
Labour for construction new Civil Works
Lump sum
18
Lump sum
19
Pump Installation
Operations and Maintenance Training
(VLOM)during pump installation
20
Laminated VLOM manual
1 ( booklet)
9
10
11
Total for Rehab one bh
VAT 16.5%
NCIC 1%
Total Amount
Lump sum
Lump sum
Lump sum
Lump sum
Lump sum