ANNEX I - TERMS OF REFERENCE
1.
BACKGROUND
United Nations Office for Project Services (UNOPS) with the financial assistance from
Department for International Development, DFID of UK, is engaged in development of urban
water supply infrastructure in El Fasher, North Darfur. The scope of work includes design and
construction of water source facilities, construction of pump station, a water transfer main,
improvements to existing treatment facilities and other ancillary works. The projects will be
implemented in close consultation with Urban Water Corporation (UWC) of North Darfur and
Public Water Corporation (PWC) of Khartoum. In this connection, UNOPS intends engage
suitably qualified / experienced consultancy firm or company in carrying out engineering and
detailed topographic surveys for the work described under Scope of Services in Annex II & III,
in the project area shown in Annex IV.
2.
LOCATION
El Fasher is the Capital of Darfur and the main administrative centre in the region. The town is
situated in North Darfur and has an estimated resident population of 50,000 households and an
IDP population. Golo reservoir located about 16km away from El Fasher town is the main source
of surface water for the town water supply scheme. The requested engineering and topographical
survey involves the proposed pipeline route (as shown in Annex IV) between Golo reservoir
pump station and the water treatment plant located in El Fasher town, approximately 11 km long.
3.
OBJECTIVE
The existing water transfer mains from Golo reservoir to treatment plant in El Fasher including
pumps and other electro-mechanical work are old and have deteriorated beyond repairs. As
such, UNOPS intends to design & construct a new water transmission pipeline from above
location to El Fasher town including construction of pump house at Golo and installation of
electro-mechanical components. The objective of the requested surveying engagement is to
provide necessary engineering & topographic survey input to the pipeline and pump station
design process.
Full of Scope of Services expected under the proposed engagement is in Annex II – Scope of
Services.
4.
DELIVERABLES
The selected contractor shall be required produce following deliverables.

Produce and handover to UNOPS a soft copy of pipeline route map surveyed along the
route shown in the enclosed map from Golo reservoir to treatment plant in El Fasher in
Auto CAD or similar surveying drafting software, indicating Golo reservoir, two Hafiars
existing pump house at Golo and treatment plant land in El Fasher, showing all features
of the route surveyed to a scale of 1;10000 or any other as appropriate and instructed by
UNOPS and produce 3 sets of this map in A1 size paper. The map shall show all main
features of the area surveyed including, but not be limited to surveyed sites, TBM’s and
any other important data including true orientation of data surveyed.

Produce and handover to UNOPS soft copy of pipeline surveyed in AutoCAD or similar
surveying drafting software, drawn to the scale specified, showing longitudinal section of
each pipeline with flat plan clearly marking North along with 3 sets of hardcopies printed
in A3 scale. All electronic copies shall be prepared in such a way that pipeline from one
node to the other (or to more nodes) shall be in one electronic file. Further, all electronic
files and all drawings printed shall show the true North (UNOPS will submit a sample
template to the selected contractor in this respect.) and true orientation of the pipeline
route from starting point to the end on a site plan, with corresponding running distances
(RD) marked.

Produce and handover to UNOPS soft copies of all other features surveyed such as sites,
bridges, cross sections and any other in AutoCAD or similar surveying drafting software
along with 3 sets of hard copies printed in A3 scale.

The contractor shall also submit to UNOPS a soft copy of the field data collected during
surveying excel format with proper description.

The contractor has to submit hard and soft copies of photographs of all bench marks
established and used in the survey work.
5.
SCHEDULE
The selected contractor is required to mobilize resources to the site, within 14 days of signing the
Contract. The survey works including final submissions of drawings shall be completed within
six (6) weeks from the date of award of the contract.
6.
CRITERIA FOR CONTRACTOR SELECTION
The selection of the successful bidder will be based on the following criteria.
 Proof of registration under the legal and regulatory requirements of the country of
registration
 The bidding firm/company shall have a minimum of one Registered/Certified Surveyor
having not less than 5 years of experience in field survey and preparation of survey plans,
electronic drawings & documentation of water related infrastructure projects including a
minimum of 2 years experience in Total Station or similar
 The bidding firm/company shall have not less than 2 competent Survey Assistants
working with the Registered/Certified Surveyor, who can effectively carry out surveying
and leveling, and sufficient number of experienced Labours/Helpers/Chainmen as those
required by the work to enable timely completion of the work
 The bidding firm/company shall have an established office with necessary hardware and
software facilities for carrying out electronic drawings / plans of the works in a timely
manner.
 Work Plan demonstrating works completion within 4 weeks as requested in above
schedule
 Financial and operational resources capacity to execute the task successfully
The equipment and facilities required for the proposed works shall include but not be limited to
the following:

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
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Automatic Leveling Equipment Set and/or Dumpy Level set
Total Station set with accessories
Leveling Staff – minimum of 2 total
Ranging Rods
Chain Links, Distance measuring equipments, Tape measures etc as required for the task.
For evaluation purposes, all bids shall be converted to US Dollars using the United Nations Operational Rate
of Exchange in force at the date of bid opening.