Technical WASH assessment, design and
preparation of detailed BoQs for two water distribution systems in North Horr
and Chalbi District in Northern Marsabit Region (Kenya):
- Rehabilitation of Gataab Spring well and distribution network in Mt Kulal village;
- Construction of a drinking water abstraction point from an existing sand dam and distribution system in Illeret village
Terms of Reference
Country: Kenya
Location: North Horr and Chalbi District
Starting date: 13th October 2011
Duration: The task is expected approximately 15 days- Rehabilitation of Gataab Spring well and distribution network in Mt Kulal village;
- Construction of a drinking water abstraction point from an existing sand dam and distribution system in Illeret village
Terms of Reference
Country: Kenya
Location: North Horr and Chalbi District
Starting date: 13th October 2011
Under responsibility of: Deputy Country Director for Kenya
Funding Sources: European Commission
Presentation of Solidarités
Solidarités International is an international humanitarian organization which provides assistance to populations affected by natural disaster or man-made crisis.
For over 30 years, Solidarités International has concentrated its actions on meeting three vital needs: Water, Food and Shelter. In the Horn of Africa, Solidarites International is currently implementing Food Security, Water and Sanitation projects in Somalia and Kenya.
Solidarites International has 2 areas of intervention in Kenya (Northern Marsabit and Nairobi informal settlements) and 3 areas of intervention in Somalia (Gedo, Lover Juba and Adaado). This consultancy focuses exclusively on North Horr program.
Purposes of the evaluation
SI has implemented DFID funded emergency and drought recovery project in North Horr District in 2008 and has a current project ending in October 2011.
The focus has been to improve access to quantity and quality of water, sanitation/hygiene practices and food security for the target beneficiaries. Under European Commission funding Solidarites is implementing a WASH project in North Horr and Chalbi Districts in Northern Marsabit Region.
This technical assessment is a follow up to a general assessment conducted in 2009/2010 whose findings proposed rehabilitation and construction of two water systems in Gataab and Illeret villages.
The technical assessment will assess viability, recommend viable rehabilitation and construction works and provide detailed technical designs and bill of quantities in provision of safe water to the target population.
Please note that; there is an existing spring distribution system in Gataab village that is not serving to its full capacity and requires rehabilitation and expansion. On the other hand, there is an existing sand dam in Illeret village that requires construction of an abstraction point and distribution network.
SI proposes to contract a consultant to undertake a detailed technical assessment of these water distribution systems and recommend viable rehabilitation and construction works of the system with an aim of increasing communities’ access to safe water and in reducing the distances covered by the population.
As indication, the budget for these rehabilitation/construction is at the level of approximately 5.0M Ksh for Gatab system, and 5.5M Ksh for Illeret.
The main objectives are:
- Context
analysis, assessment of water sources, distribution network system,
storage tanks, livestock troughs and drainage system of Gataab spring well
and Illeret water abstraction
- Propose
viable rehabilitation/construction and distribution network works in
provision of safe water to the target population
- Provide
detailed technical designs and bill of quantities for Gataab spring well
and for Illeret abstraction system
- Provide
appropriate technical design in provision of safe water to the target
population in Gaatab and Illeret villages
Scope and focus
- Travel
to Mt Kulal (Gataab village) and Illeret village for a period not less
than 10 days to carry out a detailed technical assessment and
topographical survey on the mentioned water sources and on the
distribution network
- Assess
the physical status of Gataab spring well and Illeret sand dam and propose
viable rehabilitation/ construction of an abstraction point/distribution
network in provision of safe water to the target population
- Asses
the depth, water column levels and test water source yield of Gaatab
spring well and Illeret sand dam (trial pits)
- Provide
tools and equipment and test the yield of the spring well and of the sand
dam by developing trial pits
- Based
on the outcome of the above yield tests recommend viable rehabilitation
and construction works on the water source point and on the distribution
network in link with the target population water demand
- Develop
and provide detailed water point and distribution network designs and
detailed bill of quantities of all the required construction materials for
the rehabilitation and construction works (water source, distribution
network, storage tanks, livestock troughs, drainage system)
- Suggest
suitable reticulation system, distribution points and storage facilities
for both systems (General assessment proposed 2 x 70M3 storage tank for
Gataab spring well)
- Conduct
topographical survey for the two distribution systems and calculate the
heights and expected yield at suggested water distribution points (to be
factored in the size and quality of water pipes recommended in the bill of
quantities)
- Provide
technical details on the reticulation system including, distances,
distribution points, storage facilities/capacity, livestock troughs and
drainage system required for each water system
- Assess
existing water user community management systems and suggest capacity
building activities needed for ownership and sustainability of the water
system
Evaluation process and methods
- Further
discussions on the methodology on the technical assessment to be discussed
and agreed with Solidarites WASH Project Manager and Field Coordinator on
ground in North Horr before start of the assessment
Secondary data:
- Gather
secondary data on the mentioned water systems from Ministry of water
offices in Masarbit town, Chalbi and North Horr District Government
offices(With assistance of Solidarites Field Coordinator +WASH Project
manager North Horr)
Primary data:
- Conduct
meetings with SI field teams/ local leaders and existing community water
management committees in Gataab and Illeret villages/water source
(Establish land issues in pipe network)
- Site
visits to Gataab and Illeret water source points to conduct topographical
survey and technical assessment of the water systems
- Technical
assessment of water distribution systems – Rehabilitation of Gataab spring
well/distribution network and construction of Abstraction water point and
distribution network system from Illeret sand dam
- Type
of assessment : Status- Physical conditions of the water source,
distribution network, storage tanks, livestock troughs and drainage
systems; Water source yield test (At source and at distribution points
expected in both dry and rain season); Assess existing water distribution
on site –water source point, storage tanks capacity, troughs , piping
system, and pumping equipment, model and pump head capacity if available
- Conduct
water yield test and provide results at source and at different proposed
distribution points
- Developed
detailed technical design , bill of quantities and recommend viable
rehabilitation and construction works required for the water systems in
Gataab and Illeret villages
- Interview
target beneficiary/business community to establish availability of supplies
including construction materials and O$M spare parts supply chain for the
systems
- Interview
target beneficiaries and propose possible community contribution for
ownership and sustainability of the water systems
Procedures and logistics
- The
consultant must comply with Solidarites’ rules and procedures related to
security when in the field
- Accommodation
and transport to and from Nairobi and in the field will be provided and
organised by SI’s Field Coordinator and manager in North Horr. The
consultant will cover all other living costs including food and water
- Consultant
will provide tools and equipment required for topographical survey, trial
pits on the sand dam and yield test for Gataab spring well and Illeret
water abstraction system
Deliverables
- A
technical assessment report (Maximum 30 pages) detailing the findings and
technical suggestion on rehabilitation and construction works on water
points, distribution network, storage tanks, livestock troughs and
drainage systems for both Gataab spring well and Illeret abstraction
system
- Yield
test results, distances, storage points /capacity of tanks and
distribution points for Gataab spring well and from trial pits in Illeret
sand dam
- Provide
detailed technical designs and bill of quantities for rehabilitation and
construction works of Gataab spring well and Illeret water abstraction
system
- Provide
a map and photographs of assessed water distribution systems and
recommended sites
- In
addition provide a table with summary of key technical findings and
recommendations for the water distribution systems (see table attached)
Note: The quality of the
methodology used, technical data collected ,analysis done and reporting is
paramount and sub-standard reporting will not be accepted
Qualification of the consultant
Qualification of the consultant
- University
degree in structural, civil or water engineering
- At
least 3 years proven experience on similar works (water distribution
systems)
- Experience
in working with NGOs on similar works
- Good
understanding of community ethics and proven integrity and professionalism
How to apply
Please send your proposal, highlighting the following:
Please send your proposal, highlighting the following:
- A
brief introduction of bidding firm or person attaching relevant CVs
- Your
understanding of the Terms of Reference
- Proposed
methodology and approach
- Proposed
work plan and budget
- Your
availability
Please indicate the consultancy you are applying for in the title of your email.
Only short-listed applications will be contacted.
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