Irrigation Potential in West Pokot

7/27/2019 Irrigation Potential in West Pokot

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Kerio Valley Development Ptokou & Sangat Irrigation

Authority Project

Norken (I) Ltd. i Progress Report-18 July 2013

TABLE CONTENTS

List of Abbreviations and Acronyms ....................................................................................... iv

CHAPTER ONE: EXECUTIVE SUMMARY....................................................................... 1-11.1 Project Background ........................................................................................................... 1-1

1.2 Contract Data .................................................................................................................... 1-1

1.3

Project Area ...................................................................................................................... 1-2

1.4 Project Data ...................................................................................................................... 1-2

1.5 Project Components .......................................................................................................... 1-2

1.6 Existing Irrigation Scheme ................................................................................................. 1-3

CHAPTER TWO: PROGRESS OF THE WORKS ............................................................... 2-12.1 General ............................................................................................................................. 2-1

2.2 Bill One: Preliminaries and General .................................................................................. 2-1

2.2.1 Programme of works.................................................................................................................. 2-1

2.2.2 Project Vehicle ........................................................................................................................... 2-1

2.2.3 Offices and Houses..................................................................................................................... 2-1

2.2.4 Weather Station......................................................................................................................... 2-1

2.2.5 Surveying and Survey Equipment............................................................................................... 2-1

2.2.6 Publicity Boards ......................................................................................................................... 2-12.2.7 Materials.................................................................................................................................... 2-1

2.2.8 Plant and Equipment.................................................................................................................. 2-2

2.2.9 Labour........................................................................................................................................ 2-2

2.3 Bill No.2: Intake Works ..................................................................................................... 2-2

2.4 Bill No.3: Sedimentation Tank ........................................................................................... 2-2

2.5 Bill No.4: Roads and Plot Demarcation, and Supply of Sand and Aggregates for Road

Drainage Works ............................................................................................................................. 2-2

2.6 Bill No.5: Combined Pipeline ............................................................................................. 2-3

2.7 Bill No.6: Main Pipeline A.................................................................................................. 2-3

2.8 Bill No.7: Main Pipeline B .................................................................................................. 2-3

2.9 Bill No.8: Ptokou Sub Mains & Bill No.9: Sangat Sub Mains .............................................. 2-32.10 Bill No.10: Field Hydrant and Sprinkler System for 0.5 Acre Irrigated Module .................. 2-3

2.11 Bill No.11: Field Hydrant and Sprinkler System for 0.25 Acre Irrigated Module ................ 2-3

2.12 Value of Work done .......................................................................................................... 2-4

2.13 Interim Payments .............................................................................................................. 2-5

2.14 Supervision Activities ........................................................................................................ 2-5

2.15 Contingency Works ........................................................................................................... 2-5

2.16 Constrains Encountered During the Period and Solutions ................................................. 2-5

CHAPTER THREE: SUPERVISION SERVICES ............................................................... 3-13.1 Site Supervision Staff ........................................................................................................ 3-1

3.1.1 Staff seconded by the Client....................................................................................................... 3-1

3.2

Consultants Head Office Support Staff: ............................................................................ 3-1

3.3 Contractors Staff .............................................................................................................. 3-1

3.4 Meetings ........................................................................................................................... 3-1

3.5 Visitors .............................................................................................................................. 3-1

3.6 Weather ............................................................................................................................ 3-1


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Authority Project

Norken (I) Ltd. ii Progress Report-18 July 2013

APPENDICES

Appendix A: Correspondences

Appendix B: Works Programme

Appendix C: Weather Charts

Appendix D: Site Instructions

Appendix E: Minutes

Appendix F: Progress Photos


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Norken (I) Ltd. iii Progress Report-18 July 2013

Scheme Layout


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Authority Project

Norken (I) Ltd. iv Progress Report-18 July 2013

List of Abbreviations and Acronyms

BOQ Bills of Quantities

DC District Commissioner

EIA Environmental Impact Assessment

ESP Economic Stimulus Programme

ET Evapo-transpiration rate

F/WUA Farmer/Water User Association

GDP Gross Domestic Product

GI Galvanized Iron

GIS Global Information System

GoK Government of Kenya

KES Kenya Shillings

KVDA Kerio Valley Development Authority

MD Managing Director

MOWI Ministry of Water and Irrigation

NGO Non Governmental Organisation

NEMA National Environment Management Authority

O&M Operation & Maintenance

PE Project Engineer

RE Resident Engineer

PVC Un-plasticed Polyvinyl Chloride

VIP Ventilated Improved Pit Latrine

WUAs Water Users Associations

WRMA Water Resources Management Authority


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Authority Project

Norken (I) Ltd. 1-1 Progress Report July 2013

CHAPTER ONE: EXECUTIVE SUMMARY

1.1 Project BackgroundThe Government of Kenya through the implementing agency, Kerio Valley DevelopmentAuthority (KVDA),-herein referred to as the Client has earmarked funds through theEconomic Stimulus Programme for the Design, Supervision and Construction of Ptokou

and Sangat Irrigation Scheme. In order to effectively implement the project, the Clientprocured a Consultant M/s Norken (I) Ltd ofP.O Box 9882-00100 Nairobi to carry out

both the Design and Construction Supervision. With the assistance of the Consultant, theClient after tendering procured the services from ContractorM/s Toddy Merchants Ltd of

P.O Box 30382 -00100 Nairobi to carry out the Construction of the Project. The projectcommencement date was May 3rd2011.

1.2 Contract DataProject

Contract Number

Construction of Ptokou & Sangat Irrigation Projects

Financier GoK Economic Stimulus Package

Implementing Agency Kerio Valley Development Authority (KVDA)

Engineer Irrigation Engineer, KVDA

Consultant Norken International Ltd

Contractor Toddy Merchants Ltd

Project Award date 10th

November 2010

Commencement date May 3rd2011

Contract Period 6 months

Report Date 29th

April 30th

May 2013

Expected Date ofcompletion

4th

November 2011

5th

Extension of TimeGiven

3 months

Revised Contract Period 18 months

Revised Completion date 31st

July 2013

Variations Nil

Time elapsed; % 548 days; 100%

Contract sum KES108, 657, 231.90 discounted to KES 100,914,472.80

Value of work done; % Kshs 83,475,399

Payments to date Advance payment + IPC1+ IPC 2 + IPC3 + IPC 4 +IPC 5 =

KES 80,422,481.94 inc of 16% VAT


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1.3 Project AreaThe scheme is located about 510 km North West of Nairobi within the Kerio Valley near

Sigor Trading Centre. Sigor Trading Centre is 7 km off the A1 Kitale- Lodwar Road. Kitale

Town, which is 120 km from Sigor, is the nearest major town that has well developed

supply facilities. The Ptokou and Sangat Irrigation Project area lies on the westernescarpment of the Rift Valley. It is within four Sub Locations; Ptokou, Sangat, Korellach

and Takar in Wei Wei Location, Sigor Division, Pokot Central District. The project lies

within longitude 350 16 E 350 31 E, latitude 1028- 10 37 N. The project area is within 900

to 1200 meters above sea level. (m.a.s.l)

1.4 Project DataProject Location Pokot Central

Project Type Gravity Fed Irrigation System

Number of Beneficiaries 957

Area To Be Irrigated 800 acres

Average Farm Size 1.0 Acres

Average Plot Size to be Irrigated 0.25 0.5acres

Water Sources Wei Wei River

Elevation of the Intake 1035m a.s.l

Project Design Capacity 403.6 l/s = 0.40362 m3/s

Irrigation System Sprinkler

Drainage Area 2EE sub basin 2B28

Minimum Flow Rate 1.0m3/s

Type of Intake Structure Concrete fixed weir

1.5 Project ComponentsThe major works expected to be undertaken are as follows:

Construction of intake works and sedimentation basin; Laying of main lines A and B in Sangat and Ptokou respectively; Laying of sub-main lines (distribution systems); Road improvement; Two demonstration sprinkler irrigation modules of 0.25 and 0.50 Acres; Construction of houses, offices and camps for the staff to benefit farmers on completion of

the project.


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The works items are summarised as follows:-

Item Description Amount Revised Amount

Bill No. 1 Preliminaries and General 22,940,700.00 24,138,400.00

Bill No. 2 Intake Works 3,261,500.00 5,180,500.00

Bill No. 3 Sedimentation Tank 3,053,700.00 3,925,800.00

Bill No. 4 A Roads and Plot Demarcation, and Supplyof Sand and Aggregates for Road

Drainage Works

5, 660, 000.00 1,630,000.00

Bill No. 5 Combined Pipeline 9, 828,400.00 12,726,900.00

Bill No 6 Main Pipeline A 10,415,200.00 10,734,900.00

Bill No 7 Main Pipeline B 13,368,500.00 10,597,500.00

Bill No. 8 Ptokou Sub Mains 8,800,300.00 8,800,300.00

Bill No. 9 Sangat Sub Mains 11,826,250.00 7,203,500.00

Bill No. 10 Field Hydrant and Sprinkler System for

0.5 Acre Irrigated Module34, 500.00 34,500.00

Bill No. 11 Field Hydrant and Sprinkler System for0.25 Acre Irrigated Module

20,500.00 20,500.00

Sub- total 89,209,550.00 84,992,800.00

Discount of 7.125857% on above 6,356,944.96 6,056,465.39

Revised Sub-total 82,852,605.04 78,936,334.61

Add 16% V.A.T 13,256,416.81 12,629,813.54

Total96,109,021.85 91,566,148.15

Add 5% Contingency 4,805,451.09 0

Add for Extra Works (Bush Clearing, Furniture, Driftsand Installation of Solar Systems) and Contingency

Fund

9,348,324.65

Grand Total 100,914,472.94 100,914,472.65

Rounding - 0.14 + 0.15TOTAL TENDER SUM 100,914,472.80 100,914,472.80

1.6 Existing Irrigation SchemeAround 150 acres are currently under irrigation. The operational condition of the existing

irrigation facilities is rated to be in poor condition. This is attributed to the following

factors:

Weak institutional set up; poor water allocation mechanisms; massive water losses in the canals; poor maintenance of the canals; structural failure of the canals;


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CHAPTER TWO: PROGRESS OF WORKS

2.1 GeneralThe progress of works since the contract was renewed has been slow and hence the

objective of the project has not been met. The 3 months time extension has already hasalready elapsed with substantial works still remaining. During the 10

thSite meeting the

contractor proposed to complete the remaining works during the defects liability period

2.2 Bill One: Preliminaries and General2.2.1 Programme of works

The Revised Bill of Quantities was approved by the Client and addresses all the pertinent

issues that had been an obstacle to smooth delivery of the expected project outputs

2.2.2 Project VehicleThe Contractor has provided a Supervisory vehicle Reg. No. KBP 380K with a driver inconformity with the Contract specifications

2.2.3 Offices and HousesThe offices and house for the Resident Engineer has been completed and is being use by

the Supervision Team.

As required the Contractor has complied with the Contract specifications in these

provisions.

2.2.4 Weather StationRecords of the following are currently being obtained from the site weather station,

Rainfall Evaporation Rates Temperatures Humidity

2.2.5 Surveying and Survey EquipmentThe Contractor has provided the following survey equipment:

1 No. level and stand; 1 No. stave; 4 No. ranging rods

A GPS set is being used by the Consultants staff.

2.2.6 Publicity BoardsFour Publicity Boards have been erected at the following locations:-

Marich Junction; (No longer in existence) At the junction to Sangat; At the C.D.F Office Junction; At the Junction to Ptokou immediately after Sigor Bridge.

2.2.7 MaterialsThe following were delivered in the month of July


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Consignment of building materials (cement, sand and Ballast) Assortment of fittings for sedimentation basin, Combined Pipeline and Main Lines

2.2.8 Plant and EquipmentThe Contractor mobilized the following during the month of June

Toyota double cab pickup for the supervisory staff A Lorry I No. Vibrator 1 Excavator 2 No Mixers 2 No water Pumps

2.2.9 LabourThe daily labour force as deployed during the month of July is as shown in the table below:-

2.3 Bill No.2: Intake WorksUnder this Bill, the following is ongoing

Fixing of fittings to the intake chamber Increasing the height of the Intake chamber Construction of flood protection works which involve increasing the height of the

wing wall to protect the intake chamber.

2.4 Bill No.3: Sedimentation TankThe following works under this Bill has been completed;

Laying of sediment Discharge pipe Concrete works for the sedimentation basin Backfilling of the excavated sections Off take pipe has been connected to the Combined pipeline

The following works is still pending

Construction of chamber for Meter and Sluice valve for the off take pipe Installation of the Sluice Valve and raw water meter for the offtake Pipe

2.5 Bill No.4: Roads and Plot Demarcation, and Supply of Sand and Aggregates forRoad Drainage Works

In the BOQ review the contractor is expected to undertake the construction of driftson Lagas passing through Farm access Roads.

Construction of drifts is yet to commence

Contractors Staff Total No.Site Agent (Ag) 1

Support Staff 1

Foremen 4

Machine operators 1

Plumber 2

Labourers 30

Others (Watchmen) 4


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2.6 Bill No.5: Combined PipelineTrenching works, lying of pipes and subsequent backfilling has been completed. Rivercrossings works under this section is ongoing

The following pertaining these Bill has been done;

Chambers for Air Valves and Washouts (2 No.) Installation of Air Valves and Washouts (1 No. each) The Y Junction for Main Line A & B has been done and subsequently 2 No. Sluice

valves to serve Main Line A and B has been installed.

2.7 Bill No.6: Main Pipeline ATrenching works and subsequent laying and backfilling of pipes has been completed. Pipe

protection works involving encasing the pipe in reinforced concrete on laga crossing is alsocomplete; 4 major Lagas with cumulative length of 50m has been done with a volume of

68.56m3

of Concrete use. The following pertaining this Bill is either pending

Installation of fittings on sectional Chambers (Gate Valves, Air Valves andWashouts)

Fixing of concrete covers on the Chambers2.8 Bill No.7: Main Pipeline Bs

The following pertaining this Bill has been undertaken;

Repair works on Laga crossing has been completedWorks on the River Crossing is ongoingAnchor Blocks for 24m of GI on laga Crossing is completePipe Encasement on Minor Lagas has been completed on the whole stretch of the

Main Line B.

Chambers for Air Valves and Washout is completeChambers for pipe junctions to the Sub Mains is complete though Installation of

respective fittings was suspended due to vandalism

2.9 Bill No.8: Ptokou Sub Mains & Bill No.9: Sangat Sub MainsThe following has been done on this Bill

505 Pipes of 90mm and 75mm diameter have been laid and backfilled on SangatKorrellach side. In total, about 7800m of Pipeline will be laid in Sangat/Korellach.

202 Pipes of 90mm and 75mm diameter have been laid and backfilled on Ptokouside. The Total Trench length excavated is 2750m and about 5500m of pipes will be

laid in Ptokou.

Laying of sub mains in Ptokou farm is ongoing2.10 Bill No.10: Field Hydrant and Sprinkler System for 0.5 Acre Irrigated Module

Instruction for execution of this Bill has been given and works will start as soon as the Sub

Mains is done

2.11 Bill No.11: Field Hydrant and Sprinkler System for 0.25 Acre Irrigated ModuleInstruction for execution of this Bill has been given and works will start as soon as the Sub

Mains is done


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2.12 Extra work; Bush clearing and Laga restorationUnder the revised Bill of quantities, the Contractor is expected Clear bushes on a section ofthe Ptokou Plots and also a bit of land reclamation. Instruction on the above works as been

given and the following as been done

8.125ha of land under laga as been reclaimed Cut of drains excavated to divert water to a major laga outside the scheme. 4,000m2 of bush has been cleared 456 trees of girth between 1 -2m has been cleared by the use of the Excavator and

subsequently disposed through charcoal burning by the locals

The remaining trees is being cleared by the use of power sawBush clearing is expected to commence as soon as land reclamation works has been

completed

2.13 Value of Work doneThe reporting period marks 100% of the revised project period with value of work done at

92.8%. The table below summarises the status of progress against the BOQ items.

Item Description Revised

Amount

Amount used

to Date

% of

Value

Bill No. 1 Preliminaries and General 24,138,400.00 20,612,959.00 85.39

Bill No. 2 Intake Works 5,180,500.00 4,759,565.00 91.87

Bill No. 3 Sedimentation Tank 3,925,800.00 3,698,304.00 94.21

Bill No. 4 A Roads and Plot Demarcation, and

Supply of Sand and Aggregates for

Road Drainage Works

1,630,000.00 1,630,000.00 100.00

Bill No. 5 Combined Pipeline 12,726,900.00 12,538,135.00 98.52

Bill No 6 Main Pipeline A 10,734,900.00 10,515,660.00 97.96

Bill No 7 Main Pipeline B 10,597,500.00 13,428,650.00 97.44

Bill No. 8 Ptokou Sub Mains 8,800,300.00 7,396,625.00 84.05

Bill No. 9 Sangat Sub Mains 7,203,500.00 4,284,560.00 59.48

Bill No. 10 Field Hydrant and Sprinkler

System for 0.5 Acre IrrigatedModule

34,500.00 - 0.00

Bill No. 11 Field Hydrant and Sprinkler

System for 0.25 Acre Irrigated

Module

20,500.00 - 0.00

Sub- total 84,992,800.00 78,864,458.00 92.79

Discount of 7.125857% on above 6,077,842.96 6,056,465.39

Revised Sub-total 79,214,957.04 72,807,993.00

Add 16% V.A.T 12,674,393.13 12,629,813.54

Total 91,889,350.17 85,437,806.00

Add for Extra Works (Bush Clearing, Furniture,Drifts and Installation of Solar Systems) and

Contingency Fund

9,348,324.65 2,973,984.00

Grand Total 100,914,472.65 88,411,790.00

TOTAL TENDER SUM 100,914,472.65


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2.14 Interim PaymentsThe advance payment and IPC No. 1 & 2 have been paid to the Contractor

CertificateNo.

Name Value(Gross)(KES)

Value (Net)(KES)

Status

1. Advance Payment 10,091,448.00 10,091,448.00 Approved & Paid

2. IPC 1 12,074,640.50 8,579,079.93 Approved & paid

3. IPC2 20,903,570.00 15,955,865.82 Approved & Paid

4 IPC3 21,511,665.00 19,341,096.45 Approved & Paid

5 IPC4 17,463,153.00 12,629,935. Approved & Paid

6 IPC 5 6,221,249.00 6,032,160.69 Approved & Paid

2.15 Supervision ActivitiesDuring the period the Consultants activities were as follows:-

- Held consultative discussions with the project stakeholders; the contractor, Clientand farmers representatives.

- Issued requisite and follow up instructions for construction implementation works- Getting the cost implication of all activities being done vis-a-vis the overall project

cost

- Assisted the client on contractual matters as required.- Prepared the reports expected from the project and maintained daily records.- Maintained close liaison with the Project Engineer who has been instrumental in

matters that required Clients view and advice.- Maintained close liaison with provincial administration, and farmers

representatives

2.16 Contingency WorksContingencies are expected to cater for acquisition of easement deeds where necessary,

compensation for destruction of cash crops, damages to the existing furrow, erosion

protection works, bush clearing on Ptokou farms etc and any other extra works from the

billed items.

2.17 Constrains Encountered During the Period and Solutions Mobilization by the Contractor: The contractor has been slow in executing given

instruction, mobilization of staff, materials and Machinery. The slow mobilization of

materials has greatly affected the pace of construction

Solution: The contractor to urgently execute and mobilize all the necessary materials,

personnel and machinery

Break down of Machinery; The contractor has experienced frequent breakdowns of

Water Pump and the Mixer, which has in turn slowed down construction of thesedimentation basin.

Solution; The contractor to do regular servicing to avoid break downs and to look foralternative means in solving the given problem


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CHAPTER THREE: SUPERVISION SERVICES

3.1 Site Supervision StaffDesignation Name

Resident Engineer Elias Kiplangat

Inspectors 1. Bowler Chesire

Inspector 2. John Chepchieng Rono

3.1.1 Staff seconded by the ClientProject Engineer - Paul Serem (Irrigation Engineer, KVDA)

Farm Manager - John Kwetemoi

Secretary - Pamela Cherotich

3.2 Consultants Head Office Support Staff:Designation Name Based in

Managing Director Eng. John Ndemi Nairobi

Project Manager Eng. Lawrence Kuria Nairobi

Project Engineer Eng. David Gitau Nairobi

3.3 Contractors StaffDesignation Name Based in

Project Manager Eng. Kuria Wainaina Nairobi

Acting Site Agent/Plumber Boniface Sigor

Driver Festus Limo Sigor

3.4 MeetingsA site Meeting was held on 18

thof July 2013 and was attended by the following;

Client (KVDA) Contractor Consultant

3.5 VisitorsThe project Engineer KVDA and his team visited the site towards the end of the month

3.6 WeatherThe area has experienced relatively cold and wet conditions from mid to late July, early

month of July was characterised by low and temperatures and heavy showers.


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The average Weather records were as follows:-

Weather Condition Previous Month (June) This Month July 2013

Rainfall 0.8

Wind Speed -

Evaporation rates -

Temperature 19.7

Relative Humidity 53

The area has experienced heavy rains during the month of July these affected ongoing

works on the River crossings and the remaining works at the Intake

Documents

Irrigation Potential in West Pokot