vapcos 2

NO. WAP/EPC/CAM/2013

TENDER DOCUMENT

SUPPLY AND INSTALLATION OF HAND PUMPS FOR AUGMENTATION OF RURAL

WATER SUPPLY IN CAMBODIA

VOLUME II GENERAL TECHNICAL SPECIFICATIONS

WAPCOS LIMITED House No. 260, St. 2013, Group 14, Tangon Village,

Kakab Commune, Dangkor District, Phnom Penh, Cambodia

Tel: (855) 23866329 Email: [email protected]

December, 2013

Bidding Document for Supply and Installation of Hand Pumps for Augmentation of Rural Water Supply in Cambodia

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WAPCOS Ltd. Bidder

BIDDING DOCUMENT

FOR

SUPPLY AND INSTALLATION OF HAND PUMPS

FOR AUGMENTATION OF RURAL WATER SUPPLY

IN CAMBODIA

VOLUME – II

GENERAL TECHNICAL SPECIFICATION


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VOLUME II

GENERAL TECHNICAL SPECIFICATION

CONTENTS

Section No Title of Sections

SECTION – 1 Intent of General Technical Specifications

SECTION – 2 Working Facilities

SECTION – 3 Survey and Investigations

SECTION – 4 Installation of Hand Pumps

SECTION – 5 Drawings

SECTION – 6 Broad Village wise Locations for Installation of Hand Pumps

Annexure I Bore Well Schedule

Annexure II Pumping Data Schedule

Annexure III Well Pump Training & Receipt of Tools and Spare Parts

Record

Annexure IV Pumping Test Recording Sheet

BiddingDocumentforSupplyandInstallationofHandPumpsforAugmentationofRuralWaterSupplyinCambodia

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SECTION-1

INTENT OF GENERAL TECHNICAL

SPECIFICATIONS


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SECTION-1

INTENT OF GENERAL TECHNICAL SPECIFICATIONS

1.1 Introduction

The General Technical Specifications (hereinafter called GTS) will give general information

about execution of various items of works under the Contract and cover the specified

stipulations for measurements and payments therefor included in the Bill of Quantities.

These specifications are part of the requirements for various items of works, which shall be

executed according to the stipulations of the Contract. Hence, the instructions given herein

form an integral part of the bidding document for the works. Addenda to these specifications

may be issued, as and when required during bidding and construction phases.

These specifications shall be read in conjunction with the Bill of Quantities (BoQ in the

Financial Bid), drawings and the Conditions of Contract. While quoting the price, the

Contractor shall comply with all provisions contained in the Bidding documents with the

objective to complete each item of work without any addition of cost thereof. In case

Specifications, BoQ and Condition of Contract do not corroborate each other towards

completion of any particular item of work, the same as well as the assumptions made in

quoting of price for such item(s) of Works shall be brought out clearly in the Technical

Proposal.

It is the intent of these specifications to establish acceptable standards of quality as specified

in the technical specifications. Minor deviations in details due to manufacturer’s standard

shop process will be considered for acceptance provided that, in the opinion of the Employer/

Project Executor, the proposed substitutions are equal in quality to those specified.

All works shall be executed in conformity with the approved construction drawings and

instructions issued by the Employer/ Project Executor for construction. Execution of works

contemplated under these specifications shall include, in complete, all the procurement and

supply of required Man power (skilled and un-skilled) and Materials (inclusive of royalties,

and all other taxes and charges as levied, if any), Equipment, Plant and Machineries, office,


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stores and workshop etc., transportation, handling and placement of Materials and Equipment

to site in a professional and diligent manner. All works shall comply with the quality

requirements defined in the relevant sections of these specifications and other sections of the

bidding document to the satisfaction of the Employer/ Project Executor.

1.2 Scope of Work

The broad scope of work in general, shall be supply and Installation of 1500 Afridev Hand

Pumps for Augmentation of Rural Water Supply in Kampong Cham and Banteay Meanchey

Provinces of Cambodia, which shall include Engineering, Procurement, Supply and Drilling /

Installation, Commissioning, Testing, Operation and Maintenance for one year of Hand

Pumps, but not limited to the following works:

i. Engineering and Development of local Infra-Structures in each Province [The Contractor shall provide offices with all camp facilities / inspection vehicles for Employer/ Project Executor and / or his authorized representatives for site inspection and office works in addition to his own requirements for field works as described in Section : Camp Equipment / Facilities in GTS. Such camp facilities shall be provided in the central locations in each province to maneuver execution of works at different villages under the respective provinces].

ii. The Contractor shall clear the parts of the Site to be occupied by the Permanent Works of all vegetation and artificial obstructions including the occurrence of mines if any. The responsibility for clearance of mines if any in the selected locations for the hand pumps will be that of the Contractor who would take necessary steps for clearance in consultation and with the cooperation of MoRD.

iii. Preparation of sites

iv. Procurement, Supply and Installation of 1500 Afridev Hand Pumps (SKAT Revised Edition-4) with all accessories, spare parts and tools at the identified sites in different Districts/ Communes/ Villages of Kampong Cham and Banteay Meanchey Provinces in Cambodia.

v. Drilling of Boreholes, installation of Well Assembly and Installation of 1500 Hand pumps with construction of RCC platforms with drainage outlets at designated locations as per GTS.

vi. Commissioning, Testing and handing over after successful operations of Hand Pumps.

vii. Testing of water yield.

viii. Testing for water quality.


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ix. Preparation of basic data report for each Hand Pump site.

x. Providing Training to the community members and others as approved by the Employer/

Project Executor or their representatives in coordination with MoRD.

xi. Providing set of tools and spare parts for operation, maintenance and upkeep of Hand Pumps

along with the standard “user manuals” for the installation, operation and maintenance

procedures produced by Manufacturer both in English and local Khmer language.

xii. Operation and maintenance of each Hand Pump after the successful installation till the Defect

Liability Period for one year.

xiii. Availability of good drinking water through these Hand Pumps and their operation and

maintenance at least up to the Defects Liability Period (DLP) for one year will be the

responsibility of the Bidder/ Contractor. In case, availability of water through any of these

1500 hand Pumps during DLP is interrupted for any reason, the Hand Pump will have to be re-

commissioned at the other location as approved by the Employer at the Bidder’s risk cost and

responsibility.

xiv. Ensuring sustained availability of spares.

xv. Placing the plaque at the site as approved by the Employer/ Project Executor.


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SECTION -2

WORKING FACILITIES


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SECTION -2

WORKING FACILITIES

2.1 Scope of Work

The Scope of work for the Contractor under this section shall be to design, provide, erect/

commission, operate and maintain all the working facilities including shipment and

mobilization of material, equipment ,machinery ,personnel and labour, required for the

execution of the Works, such as but not necessarily limited to the following:

• Office and Camp Facilities

• Plant and Equipment

• Electric Power Supply System

• Water Supply System

• Communication Network

• Sewage and Waste Water Disposal System

• Transportation system

• Testing Laboratory for quality control

Materials for the working facilities shall be new and of first-class quality. The capacity and

number of equipment shall conform to the specific minimum requirements for the works they

are intended for and the climatic conditions prevailing at the site. The Contractor shall

maintain all his equipment and machineries with sufficient spare parts, special tools for repair

work and complete standby units of vital parts to guarantee a continuous operation without

any delays. The Contractor shall be fully responsible for any delays due to disregard of said

necessity.

Working Facilities shall be subject to the Employer/ Project Executor approval. The

Contractor shall, prior to dispatching any items of the Working Facilities, give written notice

to the Employer/ Project Executor with clear indications about the purpose of the items, the

kind, date and place of consignment for approval. Said notice must be given in due time to

allow for a possible cancellation in case the items do not comply with the requirements as


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stipulated. The Employer/ Project Executor will issue the response within 15 days of receipt

of the notice.

Should the Employer/ Project Executor determine that the equipment furnished does not meet

all requirements, the deficiencies shall be corrected by the Contractor before further use, or

the deficient equipment shall be replaced with satisfactory equipment. Any cost incurred in

the correction or replacement shall be borne by the Contractor.

The Contractor shall comply with all laws, regulations, and ordinances relating to the

construction and operation of the working facilities applicable in Kingdom of Cambodia.

2.2 Submittals

The Contractor shall submit basic plans of Working Facilities together with his bid. He shall

attach to his bidding documents, drawings, pictures and operating descriptions for his

proposed working facilities and shall indicate weight, standards, capacity, manufacturing date

and country of origin.

At least 15 days prior to commencing the work, the Contractor shall submit to the Employer/

Project Executor for approval the drawings of layout and details of Working Facilities.

2.3 Working Facilities

2.3.1 General

The Camp Facilities shall include, but are not limited to:

Camp offices and Accommodation

Miscellaneous Working Facilities like

• Warehouses and Equipment yard/ Sheds for the Contractor

• Workshops / Garages

• Inspection Vehicles

All working facilities shall be equipped with proper light arrangement, water supply,

communication system, sewage and waste water disposal system. Contractor shall make his

own arrangement for all working facilities.


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2.3.2 Office and Camp Facilities

The Contractor shall supply all facilities as mentioned in Clause 3.2.6.2 of Employer’s

Requirements.

He shall also ensure that an adequate supply of replacement items and spare parts covering all

the facilities is always available on site. In the case of work station computing facilities, the

Contractor shall ensure that adequate back-up is available in the event of a malfunction.

2.3.3 Plant and Equipment

The Contractor shall provide all construction plants and equipment like truck mounted

drilling rigs, concrete mixtures, etc. as would be necessary for the efficient execution of the

work simultaneously in three LOTS in accordance with the Specifications as well as the

details furnished by the Contractor in the constructional plant and equipment schedule. The

Contractor shall also deploy additional equipment, if needed, at his own cost for timely

completion of the Works.

2.3.4 Electric Power Supply System

The Contractor shall make his own arrangement for supply of power at all offices, stores /

garages, etc inclusive of all working places throughout the working period upto Defects

Liability Period. At the working places, the Contractor may have to provide his own

generating sets, depending upon site conditions.

2.3.5 Water Supply System

The Contractor shall make his own arrangement for the adequate supply of potable water to

the field offices and the working places.

2.3.6 Communication Network System

The Contractor shall supply, install, operate and maintain an appropriate Tele-communication

network, complete with standby power supply, to connect his offices with those of the

Employer/ Project Executor and all working places. He shall furnish a directory of the various

equipments installed at the Site and make it available to the Employer/ Project Executor.


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2.3.7 Sewage and Waste Water Disposal System

The Contractor shall design, construct, equip, operate and maintain all the installation

necessary to properly collect and dispose of sewage from his camps, Employer/ Project

Executor site office and other construction facilities. The Contractor shall not, under any

circumstances, discharge sewage or contaminated water into natural streams or any open

areas. Collection and Disposal of sewage shall be performed in accordance with the current

related standards and laws in force in Cambodia and always subject to the Employer/ Project

Executor approval.

2.3.8 Transport System

In addition to his own requirements for transport of ‘Men & materials” from one place to

other, the Contractor shall provide two Inspection Vehicles- one at each office at the

provincial headquarters for use by the Employer/ Project Executor and/ or their authorized

representatives for site visit/ inspection works, etc. The vehicles shall be provided with drivers

and POL and other essentials as may be required time to time. The vehicles shall be in good

serviceable condition with proper provisions.

2.3.9 Chemical Laboratory

For ensuring proper and acceptable quality of ground water, it is essential to have fully

equipped chemical laboratory for determination of various radicals for ascertaining the

chemical and pathogenic characteristics of the ground water. The concentration of various

parameters like pH, Total Dissolved Solids (TDS)/ Electric Conductivity (EC), Hardness as

CaCO3, Chlorides (Cl), Sulphates (SO4), Fluoride (F), Nitrate (NO3), Calcium (Ca),

Magnesium (Mg), Manganese (Mn), Iron (Fe), Arsenic (As) and Pathogenic contamination

like Total Coliforms & Fecal Coliforms would need to be determined. The facility for

chemical analysis available in the existing laboratories namely; Ministry of Industry Mines

and Energy (MIME) Laboratory and Laboratory of Institute of Technology of Cambodia

(LITC) which are approved by the Ministry of Rural Development, Cambodia may be availed

for the purpose. However, in case the above laboratories are inadequately equipped the same


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shall be upgraded or other appropriate arrangements shall be made by the Contractor at his

cost for conducting the desired chemical and pathogenic analysis of the ground water.

The Contractor shall also provide suitable Field Testing Kits in each of the 3 areas involving

LOT I (Memot District of Kampong Cham Province – 758 Hand Pumps), LOT II (Tboung

Khmum & Krouch Chhmar Districts of Kampong Cham Province – 542 Hand Pumps) and

LOT III (Banteay Meanchey Province – 200 Hand Pumps), for in situ spontaneous tests for

each Hand Pump site for determining the water quality. During the execution of the project

the Employer/ Project Executor will have the right to change the number of Hand Pumps in a

particular LOT and also the locations of the Hand Pump in a particular village for which the

Contractor will not be entitled for any extra cost. The Contractor shall ensure facility for

precise sounding of the bore holes down to the depth upto 100 m.

The laboratory shall be well equipped to conduct the following tests as per accepted

international standards but not limited to:-

1. Ground Water Samples

The Contractor shall collect the samples as specified or as directed by the Employer/Project

Executor, carryout the relevant test under the guidance of Employer/Project Executor or his

representative, prepare the complete report and submit them to the Employer/Project

Executor. All tests will be conducted according to the approved standards and therefore, the

equipment shall comply with the same standards. All relevant standards shall be made

available in the laboratory.

2.4 Misc. Working Facilities

2.4.1 Workshops and Sheds

The Contractor shall construct and maintain warehouses, storage yard, a workshop for repairs,

vehicle sheds / garages, fuel storages etc. for the efficient execution of the work at different

locations as per requirements.


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2.4.2 Site Security

The Contractor shall employ adequate security guards at the worksite and also at the field

offices on 24-hours duty including all non-working days i.e. Sundays and holidays. Storage

areas shall be fenced, lighted and regularly patrolled by security guards. The Contractor shall

be entirely responsible for any loss occurring in his installations and those of the

Employer/Project Executor, resulting from carelessness on the Contractor’s part.

2.4.3 Medical Care Facilities

The Contractor shall comply with laws and health standards presently in force in Cambodia.

In the event of illness of an epidemic nature breaking out, the Contractor shall carry out and

comply with all orders, arrangements or regulations, which may be issued by the Government

or local authorities. Each site shall be provided with sufficient first aid facilities.

2.4.4 Environmental Obligations

The Contractor shall, during the whole period of the Works, comply fully with all applicable

laws and regulations relating to environmental protection, mitigating measures for reducing

environmental impacts and remedial works on completion of the Works. This obligation shall

extend to the construction sites including all site installations as approved by the Employer/

Project Executor.

2.4.5 Final Clean-Up

Upon the Completion of Works the Contractor shall dismantle and demolish all temporary

structures/ scaffolding, etc. and remove all refuse, debris, and objectionable material, and fill,

grade and dress all excavated areas in a clean and proper condition acceptable to the

Employer/Project Executor. All such areas, as far as possible, shall conform to the natural

appearance of the landscape.

2.5 Measurement and Payment

Measurement and Payment for the works will be made as per the provision of General

Conditions of Contract and Particular Conditions of Contract.


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SECTION-3

SURVEY AND INVESTIGATIONS


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SECTION 3

SURVEY AND INVESTIGATIONS

3.1 General

Before submission of the Technical Proposal / Financial Bid, the Bidder are

encouraged to visit the sites and collect the required information about quality of

ground water in particular, etc. He can have interactions with the local people. Though

some results/ information about geological formation vs ground water quality at the

proposed sites have been furnished along with the Bidding Documents, but these are

indicative only and the Bidder should make his own assessment for availability of

materials, transport facilities, accommodation facilities, communication facilities, etc

at the sites.

3.2 Information for Location of Hand Pumps

The field investigations in the project area had been conducted earlier by a team of

Hydrogeologist, Geophysicist and Engineer in both the provinces. The results of these

field surveys have been documented in a report which will be made available for

guidance to the successful bidder. The broad village wise locations of sites for

installation of Hand Pumps are given in the GTS Section 6. The exact sites for each of

the 1500 locations for installation of the Hand Pumps will be intimated to the

successful Bidder along with the work order. Further, during the execution of the

project the Employer/ Project Executor will have the right to change the number of

Hand Pumps in a particular LOT and also the locations of the Hand Pump in a

particular village for which the Contractor will not be entitled for any extra cost. If any

information contradictory to expectations is collected by him, he should bring out the

facts for needful action by the Project Executor.


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It may be mentioned that the Bidder should ensure that good quality drinking water

will be available through these hand Pumps. Successful installation of the Hand Pumps

will be the sole responsibility of the Bidder. In case, after installation, Arsenic

contaminated and /or acidic/ toxic radicals are identified through chemical tests, the

tube well shall have to be abandoned, resulting in withholding payment for drilling

and associated works for that particular work. In that case, the Bidder shall have to

install the Hand Pump at an alternate location as approved by the Site Engineer/

Project Executor/ MoRD representative, without any extra cost.


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SECTION-4

INSTALLATION OF HAND PUMPS


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SECTION 4


4.1 General

4.1.1 This section covers installation of Hand Pumps at the designated locations in Kampong Cham

and Banteay Meanchey Provinces of Cambodia together with supply of all required materials,

labour, plant and equipment for the works as per specifications and approved drawings and /or

as directed by the Employer / Project Executor or their authorized Representative. The works

involved under this section are, but not limited to :

• Drilling of bore holes through all geological formations at the identified sites and

providing MS/PVC casings in underground soil strata to prevent collapse of bore well.

• Collection of underground soil / water samples for in-situ and Lab Tests

• Lowering of well assembly (vertical PVC Casing / Screening Pipes).

• Filling in annular gaps by pea gravel between borehole surface and PVC screen pipes and Bentonite and Cement Seal as per the specifications

• Development of the underground structure by deploying compressor/ centrifugal pump/ submersible pump to obtain totally sand free water.

• Carrying out Aquifer Performance Test (APT)

• Disinfection of bore well by Chlorination

• Installation of Afridev Hand Pumps • Construction of Base Platform including consolidation grouting and provision of

drainage outlet. • Operation and Maintenance of each Hand Pump during Defects Liability Period of one

year. • Training of Community regarding Operation and Maintenance along with provision of

a set of tools and spares.

4.1.2 Typical drawing for well structure as well as the drilling well with Afridev Hand Pump and also the drawing for Platform with the drainage outlet are given in Section 5. However the Bidder will submit all the relevant drawings with specifications along with the bid, which will form the basis for execution of the project.

4.1.3 All well data shall be recorded by the Contractor in the forms as given at Annexure I, II, III

and IV.


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4.2 Submissions

(1) At least thirty (30) days prior to commencement of the drilling work, the Contractor

shall submit to the Employer / PE for approval, his complete schedule of works

including updated list of equipment and experienced working personnel to be assigned

for simultaneous operations at different locations. In preparing his program, the

Contractor shall duly consider the overall construction schedule and arrange suitably

to achieve overall work progress as per approved schedules. This program shall show

operation and time requirements related to a particular location or working sections,

type, number and other data of equipment used, materials to be furnished, details on

drilling and equipping bore well with appropriate PVC tubage assembly and

operational methods to be applied, etc. The schedule of works shall be furnished with

the approach and methodology along with a bar chart in respect of complete

installation of hand pumps in each province.

(2) The Contractor shall maintain Weekly and Monthly Progress Reports at site and

submit to the Site Engineer periodically (Weekly & Monthly) with all records and

summary of drillings & drill records, sampling & testing of soil and water testing,

problems encountered , if any etc for each location of work.

4.3 Standards and Codes

Installation of the Hand Pumps with allied works shall conform to the Indian Standards

(Table 4.1) or equivalent International Standards and / or as directed by the Engineer.

Table 4.1 : Reference Indian Standards and Codes

Sl.No. Code No. Title of code

1 IS: 6926 Diamond Core drilling for Site Investigation for River Valley Projects.

2 IS: 4078 Code of Practice for Indexing and Storage of Drill Cores

3 IS: 4464 Code of Practice for Presentation of Drilling Information and Core Description in Foundation Investigation


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4 IS : 6935 Method for Determination of Water Level in a Borehole

5 IS : 4895:2000 U PVC casings and Screens [slotted pipes for bore well/ tube wells]

7 IS-383 – 1997 Specification for Coarse and Fine Aggregates from natural sources for concrete.

8 IS: 2386(P-I) Method of Tests for Aggregates for concrete : Particle size and shape

9 IS-269 – 1998 Specification for Ordinary Portland Cement (33 Grade).

10 IS-12584 – 2000 Specification for Bentonite for grouting in Civil Engineering works.

11 IS-14343 – 2001 Guidelines for choice of Grouting Materials for alluvial

grouting.

12 IS-2720 (P-V) Method of Tests for Liquid and Plastic Limits1

13 IS-4999 Recommendations for grouting of pervious soil.

4.4 Material, Plant and Equipment

4.4.1 General

All Construction / Installation materials like hand pumps, pipes, cement, aggregates and all

construction plant and equipment with all necessary attachments and tools, installations

,auxiliary services etc. shall be provided by the Contractor as required for an adequate

performance of the works within given time limits.

Type and number of the plant and equipment for drilling and sinking of PVC pipes vertically

inside the boreholes as well as all required materials for construction / installation of hand

pumps and consumables including in-situ and lab tests are subject to the approval of the

Employer/ Project Executor or their authorized representatives.


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4.4.2 Construction/ Installation Materials

(a) Hand Pumps

AFRIDEV Hand Pumps (SKAT Revision 4) shall be installed at each identified location. The

bidder shall however provide the design and drawing of the Afridev Hand Pump (SKAT

Revision 4) with list of accessories, tools and spare parts along with his bid.

(b) PVC Casings

The Rising mains shall be PVC Casings of 101.6 mm (4”) dia (8.5 Bar), conforming to IS:

4895:2000. The pipes shall have all fittings and fixtures at the ends for jointing and shall be

straight, uniform in shape & free from any deformity or injury. The pipes shall be strong

enough to resist earth pressure upto 100 m depths, when the casings will run dry. Total length

of PVC pipe with screens shall not exceed 100 m at different sites, depending upon prevailing

water table and anticipated draw down.

(c) PVC Screens

The screens shall be slotted / perforated PVC pipes of 101.6 mm (4”) dia with slot size of

1.587mm or 1/16” duly cladded with vinyl sheets, and fitted with matching couplings /

sockets at the ends for jointing with casing pipes, and shall conform to IS: 4895:2000. Length

of the PVC Screens shall be 6m to 10m , depending upon the thickness of the aquifer which

shall be identified through Logging/ Litholog of the drilled bore wells.

All manufacturing details alongwith the samples of PVC Casings as well as PVC Screens

shall be submitted to the Employer/ Project Executor or the Site Engineer for approval, 30

days prior to the shipment of the pipes.

(d) Cement

Cement shall be in general, Ordinary Portland Cement (OPC) in conformity to the

requirements as specified in IS : 269. Cement shall be stored in adequate quantities and in an

appropriate manner so that the quality remains unchanged.


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(e) Sand

Sand shall comply with the requirements as specified in IS : 383.

(f) Bentonite

Bentonite is clay having high content of montmorillonite (83% or more) and shall be naturally

powdered pure sodium cation base with high swelling characteristics. It shall be of high grade

quality conforming to IS: 12584-2000.

(g) Water

The water to be used in concrete / the grout and / or other purpose shall be fresh, clean and

free from harmful amounts of sewage, oil, acid, alkali, salts, or organic or any other

deleterious /undesirable matters. Necessary tests have to be performed by the Contractor to

ensure clean and non-contaminated fresh water without additional payment.

(h) Pea Gravel

Pea gravels shall be assorted and uniform in size of 2mm to 6mm size with tolerance of ±5%,

made from hard rocks. The gravels shall be free from flat particles, shale particles, anhydrite

and gypsum and shall be cleaned and washed properly before use.

(i) Drainage Outlet

The drainage outlet shall comprise of 203.2 mm x 150 mm and 5 m long as detailed in the

drawing. The sub-surface shall be well dressed with a uniform slope and compacted

satisfactorily before laying of drain. Broad specifications have been given in drawing. The

bidder will however submit the drawing along with his bid.

(j) Grouting Materials

In general, a grout is a homogenous colloidal mixture of cement and water. Where necessary,

Bentonite shall be mixed proportionately as to be readily pumpable. Admixtures like sodium

silicate ( Na2SO3) may also be added subject to the approval of the Site Engineer.


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4.5 Execution

4.5.1 Contractor’s Equipment and Construction Material

The contractor shall submit an itemized list of equipment and materials to the Project

Executor for approval in advance. The Contractor shall ensure the availability and provide

minimum 3 sets of construction equipments one set for each LOT of Hand Pumps as

detailed in Table 4.2 but not limited to the following:

Table 4.2

Item Description Quantity Specification

1 Drilling rigs 3 No. Truck mounted drilling rig capable of

drilling 203.2 mm diameter borehole

down to a depth of 100 m

2 Drilling tools 3 Sets Drilling bit, rods, accessories, etc.

3 Compressor 3 No. Discharge air capacity 165 CFM.

4 Pick-up truck for transport 3 No. 2 tonne

5 Water Tank Truck 3 No. 2000 liter minimum

6 Pumping Test

Equipment’s

3 Sets Submersible/Centrifugal Pump with a

capacity of pumping volume 6 cu-m per

hour

7 Miscellaneous 3 Sets Portable water level indicator, GPS,

Daily well drilling log sheet for each

well, etc.

The drilling rigs shall be in good condition and of such capacity as to drill to a depth of 100

meter. No worn or obsolete equipment shall be used and in no case shall the maker’s rating of

capacity for any equipment be exceeded. The Contractor shall provide a detail description of

the drilling method and type and age of the equipment for approval by the Project Executor

before the equipment is brought to the site.


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The Contractor shall provide appropriate tools, accessories, power, fuel, materials, supplies,

lighting, water, and other equipment’s; and experienced personnel necessary to conduct safe

and efficient drilling operations, on-site testing, and to restore the site as required. The Project

Executor or his representative will inspect all equipment’s before the start of the drilling

operations. If, in the opinion of the Project Executor the personnel and equipment are not

capable of satisfactorily performing the work specified, the Contractor shall immediately

substitute proper personnel and equipment’s.

Only fresh water shall be used in drilling fluids, whether employed alone or in combination

with drilling additives.

4.5.2 Drilling Bore Holes

(1) Borehole Details:

(i) Diameter of Borehole: 203.2mm (8″) for drilling in loose sedimentary formation

and 7″5/8 for drilling in rock formation.

(ii) Length of Borehole: Dependent upon site conditions, but not exceeding 100 m

(iii) Thickness of Overburden: 2m to 4m or more, depending upon site conditions

(2) Drilling Equipment

Drilling equipment shall be Rotary / DTH / Combination rigs and shall have capacity to drill

bore holes of 203.2 mm (8″) / 7″5/8 dia upto a depth of about 100 m. All equipment, plant,

and tools for carrying out drilling operations shall be in good working conditions.

4.5.3 Drilling Operation

Drilling of boreholes shall be carried out dry in 2-3m stages or less, depending upon thickness

of the overburden. After drilling through the overburden, all required observations /collection

of borehole data and samples/ testing, etc shall be conform as per specifications. MS casings

shall then be inserted upto the depth of loose formation/ overburden before proceeding for the

next stage of drilling. Diameter of the borehole in overburden shall preferably be slightly

more than 203.2mm so as to permit insertion of steel casings having internal dia of 203.2mm.


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Vol-II-21

WAPCOS Ltd. Bidder

For drilling in bed rock, diamond core drilling shall be carried out in 3m stages. Core/ drilling

cuts shall be properly preserved for inspection. Drilling shall be extended upto 3m below the

bottom of the identified aquifer so as to insert blank pipe below the aquifer. However, drilling

operation in the location shall be discontinued if contamination of Arsenic is confirmed by

field testing kit during the Preliminary Yield Test (PYT).

The following sequential operations shall be carried out during and after drilling of boreholes:

i. Drilling and Collection of drill cuttings samples for every meter of drilling

ii. Checking of Alignment and Verticality of Borehole

iii. Identification of Aquifer/ Granular Zone

iv. Fabrication of Bore Well Assembly as per instruction of Site Engineer/ Geologist and

lowering of the same in the bore well and gravel shrouding, providing bentonite and

cement seal and other requirement as per GTS.

v. Development of Tube Well by air compressor initially followed by centrifugal/

submersible pump

vi. Pumping Test (APT) at constant discharge and/or Step Drawdown Test (SDT)

wherever necessary/ possible. SDT is optional and may require to be conducted

sparingly in exceptional circumstances.

vii. Collection and Testing of Tube well Water samples

viii. Disinfection through Chlorination

ix. Well Completion

4.5.4 Collection / Testing of underground soil / water of the Bore hole

During drilling operation, samples of drill cuttings and groundwater shall be collected and

tested in-situ and/or in the laboratory, as directed by the Site Engineer. The water samples

shall be collected in non-reactive translucent double corck polythene bottles of 1 liter

capacity.


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Vol-II-22

WAPCOS Ltd. Bidder

4.5.5 Alignment Checking

Well should be vertical and straight. The alignment and verticality of well shall be checked by

plummet which shall be suspended with a thin wire from tripod with winch. The verticality

test shall be carried out in presence of site Engineer. To ensure verticality of tube well, the

guides may be used with assembly pipe at the time of lowering of well assembly.

4.5.6 Ascertaining the Quality of Aquifer Water

Preliminary Yield Test (PYT) shall be conducted in naked borehole where packers test is not

possible due to operational or other reasons. The PYT shall be limited to 10 minutes or less

depending upon the ejection of ground water from the zone of aquifer after the compressor

has been run for some time.

Alternately, Drill stem test shall be carried out at the selected bore wells limited to a period of

10 minutes or less. Drill stem test (packers test) is optional and may be required in Tboung

Khmum and Krouch Chhmar Districts only where Arsenic contamination of shallow ground

water has been reported.

4.5.7 Lowering of PVC Well Assembly

Where it has been established after DST/ PYT that there is no Arsenic hazard, then only

lowering of well assembly would be taken up. However if contamination of Arsenic is

confirmed, the bore hole shall be abandoned.

The site Hydrogeologist/ Engineer shall recommend fabrication of bore well assembly based

on study of drill cuttings. Bore well assembly shall have 3.0 m blank PVC pipe at the base of

the assembly to serve as Bail Plug at the bottom. Whereas slotted section is so fixed in the

well assembly that it rests against the granular zone. Every joint shall be firmly secured.

4.5.8 Filling of Annular spaces between Tube Well and Borehole

(a) Gravel Packing

After lowering of the PVC blank pipe (3m below the bottom of the identified aquifer) and the

PVC Screens thereupon, the annular space between well assembly and the bore hole surface


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Vol-II-23

WAPCOS Ltd. Bidder

from bottom of the bore well shall be properly shrouded with approved quality pea-gravel of

2-6 mm size assorted, satisfying the filter criteria. The gravel packing shall be done in such a

manner that it wholly shrouds the slotted section of the well assembly and the level of the

gravel pack rests 6-8 m above the top of the slotted section. Shrouding of pea gravels shall be

carried out by adopting Reverse Fluid Circulation Method ensuring that no bridging takes

place. In case of thick mud available in borehole, it should be thinned by flowing fresh water

after lowering well assembly and before gravel shrouding. Filling and subsequent packing

shall be carried out in stages of one meter or so. It should be ensured that the Gravel pack

consists of well rounded, washed particles comprising at least 90% silicious material and

should not contain any clay, shale, silt and other fine material or crushed material.

(b) Bentonite Packing

The annular space between the casing pipe and the borehole from top of the gravel packing of

the screen pipe shall be shrouded with 2.0 metre thick bentonite seal by using approved

quality of bentonite pellets and well compacted with the purpose to protect infiltration of

water from the upper layer of overburden or otherwise. Pouring of bentonite pellets shall be

followed with water in stages of one meter or so to ensure proper setting and occupy the

spaces uniformly.

(c) Earth Filling

The annular space between the casing pipe and the borehole from top of the bentonite seal

extending upto 3.0 metre below ground level shall be backfilled with the excavated soil and

well compacted in stages as described above.

(d) Cement Seal

Three (3) meters of annular space from the top of the ground level shall be sealed with cement

slurry of 1.85 – 2.15 kg cement / litre grout to prevent dirty surface water and contaminants

from entering the bore hole and also to hold the well assembly tightly in place. The grout shall

be injected into the annulus in a single operation so that a complete and continuous seal is

achieved. However top 0.4 metre of annulus shall be left ungrouted (but temporarily


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Vol-II-24

WAPCOS Ltd. Bidder

backfilled with inert drill cuttings), to facilitate installation of Hand pump pedestal which will

also be sealed subsequently.

4.5.9 Development of Tube Well

The Tube wells shall be developed by air lift through air compressor and over pumping unit to

ensure sand free discharge/ optimal yield as follows :

a) Development by Air Compressor (Air Lift and/or Surging)

During, development by air compressor, the operation shall be carried out as under:

1) Development by compressor with variable discharge shall be carried out using

compressor of suitable capacity 100 PSI/165 CFM or more air pressure as per site

requirement to achieve development upto the bottom of the tube well.

2) Suitable dia Eductor pipe shall be used as discharge pipe and 25 mm diameter air line

should be used for air supply/ observation and recording of water levels during

different stages of development if deem necessary.

3) The development shall be carried out from the top of aquifer to the bottom of the

aquifer and vice versa.

4) The development with Air compressor should be carried out for till the water becomes

mud/sand free and gravel is fully set in the annular space. Development should be

carried out atleast for 24 running hours.

b) Development by pumping Unit

Suitable low capacity submersible pump/centrifugal pump having a discharge range of 0.5 to

6 m3/hr and lift upto 40 m shall be lowered for development of bore wells to ensure sand free

discharge. Alternatively turbine pump of suitable capacity can also be used for development

by pumping unit.


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Vol-II-25

WAPCOS Ltd. Bidder

c) Treatment of newly constructed tube well (Optional)

Where the water of the newly constructed structure is not getting clear /sand free, the tube

well shall be treated as follows:

1. Treatments by Hexametaphosphate for removal of Bentonite cake/scales if any[ in Kampong Cham Province].

Duration: 24 hrs.

2. Treatment by commercial hydrochloric acid in Limestone terrain to open up solution cavities/caverns [in Banteay Meanchey Province].

Duration: 24 hrs.

Note: Chemical treatment of the tube wells shall be resorted to only in cases where prolonged

development procedure (compressor and pump separately) fail to obtain clear sand free water.

Thus the chemical treatment of the tube well is optional which may or may not be required

at all.

d) After the completion of mechanical (or even chemical) development of the tube well, the

contractor shall accurately sound the well to determine the level of accumulated sediments

within the tubage assembly. The contractor shall record the level of accumulated sediments in

the driller’s daily log. The contractor shall ensure removal of such accumulated sediments

through air lift.

4.5.10 Pumping Test

Actual pumping test shall be preceded by short duration Preliminary Yield Test (PYT) for a

period not exceeding 2 hours during which water level data, before and after pumping and

recovery period shall be recorded. After development of a tube well, an Aquifer Performance

Test (A.P.T.) of 6 - 8 hours duration shall be carried out at constant discharge for evaluation

of aquifer yield characteristics, well efficiency and aquifer parameters. To carry out such tests,

the following equipment shall be required:

i) A suitable pump and prime mover (where electric power is not available at the well site).


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Vol-II-26

WAPCOS Ltd. Bidder

ii) Measuring devices for time, discharge, water level recorder (engraved steel tape) and/or

acoustic water level recorder, Electric water level recorder, flow pipe of suitable dia and size.

iii) 25 mm dia airline needed to be lowered in the test well as well as observation well up to

required depth for measurement of water levels during the test.

iv) Discharged water from the bore well shall be removed through pipe system (without involving

spillage of water at the bore well site) to at least 200m away from the site.

Pumping test shall be conducted on the bore well to be fitted with Hand pump at constant

discharge varying between 0.5 to 6 lps. The duration of pumping test shall be 6-8 hrs. During

the pumping test, monitoring of water levels at the time of Pumping as also the recovery

period shall be recorded with their frequency as given in Table-4.3.

Table-4.3: Frequency of Pumping and Recovery for Pumping Test

S.No. Pumping Period Recovery Period

Minutes Frequency Minutes Frequency

1. 1-10 Every Minute 1-10 Every Minute 2. 10-30 Every 2 Minute 10-30 Every 2 Minute 3. 30-60 Every 5 minute 30-60 Every 5 minute 4. 60-120 Every 10 Minute 60-120 Every 10 Minute 5. 120-240 Every 20 Minute 120-240 Every 20 Minute 6. 240-360 Every 30 Minute 240-360 Every 30 Minute 7. 360-480 Every 60 Minute 360-480 Every 60 Minute

Depending upon the behavior of the bore well as reflected by the water level (WL) data the

pumping test may have to be continued upto maximum of 8 hours. In case where the

drawdown gets stabilized and the WL data does not show decline during pumping, the test

may be completed earlier than intended 6-8 hours. All such measurements shall be undertaken

using embossed steel tape and/ or Electric Sounder/ Acoustic sounder.

4.5.11 Collection of Water Samples/ Testing of Tube Well Water

Two samples of the ground water shall be collected in 1 litre capacity translucent non-

reactive double cork polythene bottle of good quality. The first sample shall be collected


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Vol-II-27

WAPCOS Ltd. Bidder

any time during the initial 20-40 minutes of pumping and the second sample just before the

termination of pumping. At the time of collection of water samples, the Contractor shall

record the temperature, pH and Electric Conductivity (EC) of the ground water sample and

precisely label the container. The two ground water samples thus collected shall be analysed

in the field itself through the field testing kit for the parameters as given in Table 4.3:

Table 4.3 Parameters to be tested at site for each Hand Pump

Sr. No. Parameter Desirable Limit

1. pH 6.5 – 8.5

2. Total Dissolved Solids (TDS) 500-800 mg/l

3. Total Hardness (CaCO3) 300-600 mg/l

4. Turbidity 5-10 NTU

5. Chloride (Cl) 250-1000 mg/l

6. Fluoride (F) 1.0-1.5 mg/l

7. Nitrate (NO3) 45-50 mg/l

8. Iron (Fe) 0.3-1.0 mg/l

9. Arsenic (As) 0.01-0.05 mg/l

10. Fecal Coliform Totally Absent

Each Bore Well is required to be tested for presence of Fecal Coliform. Where it indicates

positive presence, the well would need to be adequately bleach chlorinated to make it totally

disinfected.

At least one representative ground water sample shall also be collected from cluster of Hand

Pumps constructed in the village for determination of concentration of various parameters as

cited below at Table 4.4 in the chemical laboratory for establishing chemical characteristics

of the ground water. The number of such samples shall not exceed 380.

Table 4.4 Parameters to be tested in Laboratory


1. pH 6.5 – 8.5



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Vol-II-28

WAPCOS Ltd. Bidder




6. Sulphate (SO4) 200-400 mg/l



9. Calcium (Ca) 75-200 mg/l

10. Magnesium (Mg) 30-100 mg/l

11. Manganese (Mn) 0.1-0.3 mg/l

12. Iron (Fe) 0.3-1.0 mg/l

13. Arsenic (As) 0.01-0.05 mg/l

14. Total Coliform < 10 per 100 ml


However, ground water samples collected from Tboung Khmum and Krouch Chhmar need

special attention regarding contamination of Arsenic. Selected samples from suspected

Arsenic infested area will have to be analysed for concentration of Arsenic in the ground

water. The total number of such samples shall not exceed 20.

4.5.12.1 Disinfection of Bore Well through Chlorination

Every well is required to receive a chlorine bleach treatment. The treatment shall be by

pouring one 1.5 litre bottle of chlorine bleach (6% solution) per well. The chlorination

treatment shall be done prior to installation of Hand Pump and kept for 24 hours for proper

disinfection of well. The Contractor shall then pump out this water until the residual

chlorine is less than 0.1 mg/l.

4.5.12.2 Completion of Installation of Hand Pumps & Platform

After satisfactory commissioning of the Hand Pumps, 4 holes of 50 mm dia shall be drilled

radially upto a depth of 3m from GL, within an area of 1.5 m radius from the base of the

hand Pumps. A mixture of cement, sand, bentonite and / or sodium silicate solution,


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Vol-II-29

WAPCOS Ltd. Bidder

depending upon soil grains, shall then be poured through these holes with appropriate

pressure such that no upheaval occurs. After grouting, a RCC platform (M-15) with nominal

reinforcement and 125mm thickness shall be laid over the ground surface duly consolidated

and leveled, covering an area of 1.5m radius from the base of the Hand Pumps as per the

drawing in Section 5 of GTS. The platform shall be provided with a drainage outlet as per

the drawing over the consolidated ground formation with an uniform slope to facilitate

proper drainage of water. The inlet and outlet of the drain shall be smoothly finished. The

surface of the platform shall also be plastered with 20mm thick cement plaster

(1cement:4sand, finished with neat cement coating.

For all successful well the Contractor shall engrave on the Platform, well number, well

depth, SWL, DWL & date of installation.

The drawing attached with the bidding document is for reference only. The bidder shall

however provide the design and drawing of the Platform and drainage outlet and

specifications along with the bid.

5.0 Definition of Successful Well

Bore well is considered successful when 25 liters of water of an acceptable water quality are

produced per minute and the dynamic water level does not exceed 40 meters depth from the

ground surface in case of over 50 meters drilled borehole.

With regard to water quality, only the wells with quality not exceeding the following

parameters and value shall be considered successful as indicated in Table 4.5:

Table 4.5 Parameters of successful Hand Pump


1. Ph 6.5 – 8.5






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Vol-II-30

WAPCOS Ltd. Bidder



8. Iron (Fe) 0.3-1.0 mg/l

9. Arsenic (As) 0.01-0.05 mg/l


5.1 Unsuccessful Wells in Respect of Water Yield

When using the DTH hammering method, it is possible to judge whether the well is

successful or not during drilling. In rotary drilling success or failure can only be judged after

drilling is completed, such as installation of screen casings, gravel packing, well

development and pumping test. Therefore if well is determined to be unsuccessful in respect

of water volume (yield) the Contractor shall provide a written record of the actual quantities

of drilling, casing, screens and well development for the Project Executor and the payment

will be released accordingly for the item of works actually carried out.

5.2 Unsuccessful Wells in Respect of Water Quality

In case of unsuccessful wells in respect of water quality, success or failure can only be

judged through works after drilling is completed, such as installation of screen casings,

gravel filling, well development, pumping test and water quality analysis. Therefore if a well

is determined to be unsuccessful due to poor water quality, the Contractor shall provide a

written record of the actual quantities of drilling, casing, screens and well development for

the Project Executor for consideration of payments.

In case the presence of Fecal Coliform is observed in respect of any Hand Pump site, the

well would need to be adequately bleach chlorinated to make it totally disinfected and

successful.


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Vol-II-31

WAPCOS Ltd. Bidder

5.3 Countermeasures for Unsuccessful Wells

It is dangerous to leave the drilled boreholes as they are, the holes shall be filled in the

drilled holes are to be filled up with clean sand and this shall be well compacted with water

for proper settling.

5.4 Alternative Drilling Sites

After a well is declared as unsuccessful the same shall be abandoned and an alternate site

will be taken up for drilling and installation of the Hand Pump after the approval from

Employer/ Project Executor or his authorized representative.

The payment for the unsuccessful well site so declared and abandoned will be paid as per the

provisions of the Contract.

6.0 Hand Pump Installation, Commissioning, Operation & Maintenance and Training on

Operation and Maintenance of Hand Pumps

6.1 The Contractor shall install and commission the Hand Pump according to the

Manufacturer’s instruction. After the installation, Hand Pumps shall be continuously

operated for 100 strokes to check for installation quality. Necessary performance and other

tests would be conducted as detailed in the GTS before handing over the completed Hand

Pump to the concerned authorities.

6.2 After successful installation and handing over of the Hand Pump to the Employer/ Project

Executor or his authorized representative, the Contractor will carry out the Operation and

Maintenance of each pump during the defects liability period for one year. During the

above period of one year, continuous availability of good drinking water through these

Hand Pumps will be the responsibility of the Bidder/ Contractor. In case, availability of

water through any of these 1500 hand Pumps during DLP is interrupted for any reason, the

Hand Pump will have to be re-commissioned at the other location as approved by the

Employer/ Project Executor at the Bidder/ Contractor’s risk cost and responsibility.


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Vol-II-32

WAPCOS Ltd. Bidder

6.3 The representatives of Project Executor/ MoRD/ Village Community will also be

associated by the contractor right from the preparation of the site till the commissioning of

the hand pump for on work training. The Contractor shall provide extensive operational

training to the nominated community/ and Staff of MoRD after commissioning of the

Pumps in each area. The training shall be imparted by the Contractor for running, upkeep

and maintenance of various pump components at each location as approved by MoRD.

This Training has to be provided before handing over of the Hand Pump to the Employer/

Project Executor or their representative.

6.4 A set of essential tools and spares parts for one year shall also be provided free of cost to

the community members at each pump site for operation, maintenance and upkeep of Hand

Pumps along with the standard “User Manuals” for the installation, operation and

maintenance procedures produced by Manufacturer both in English and Khmer languages.

The list of the set of essential tools and spare parts which shall be supplied by the

Contractor at each location shall be provided along with the bid.

6.5 The Contractor shall install a plaque as per the drawing given in Section 5 at each location

of Hand Pump. The relevant matter to be printed on the plaque will be given to the

successful Bidder.


========================================================================================

SECTION-5

DRAWINGS


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Vol-II-33

WAPCOS Ltd. Bidder

SECTION 5

DRAWINGS

5.1 Typical drawing for well structure as well as the drilling well with Afridev Hand

Pump.

5.2 Typical drawing for Platform with the drainage outlet.

5.3 AFRIDEV Hand Pumps (SKAT Revision 4) shall be installed at each identified

location. The bidder shall however provide the design and drawing of the Afridev

Hand Pump (SKAT Revision 4) with list of accessories, tools and spare parts along

with his bid.

5.4 Typical drawing of the Plaque to be installed at each location of Hand Pump. The

relevant matter to be printed on the plaque will be given to the successful Bidder

Note: The above drawings attached with the Bidding documents are for reference only. Based upon site visit and experience, the EPC Contractor shall prepare the Layout of the Project works as well as the Infra-structure development works with details and submit his Technical Bid along with all the relevant drawings and specifications along with the bid.


========================================================================================

SECTION-6

BROAD VILLAGE WISE LOCATION FOR


Sr. N

O.

DIS

TRIC

TC

OM

MU

NE

VILL

AGE

No.

of H

AND

PU

MP

REC

OM

MEN

DED

DR

ILLI

NG

DEP

TH (m

)R

EMAR

KS

1TH

MA

PE

CH

I2

40-5

02

THM

A P

EC

H II

I3

50.0

3K

OK

340

-50

4O

PIR

340

-50

5D

ON

G2

40-5

06

CH

HIE

S II

340

-50

7B

OE

NG

PR

UO

L LE

U6

50-6

08

TUO

L K

AM

PO

T TI

MU

OY

660

.09

TUO

L K

AM

PO

T TI

BE

I6

50-6

010

MA

SIN

SR

AU

V5

50-6

011

VIH

EA

R K

RA

OM

750

-60

12B

ATD

EI K

RA

OM

750

-60

13B

EU

NG

KA

MB

AO

450

-60

14TU

OL

DA

MB

AN

G4

50-6

015

SP

EA

N C

HH

EU

350

-60

16B

EU

NG

KO

R3

60.0

17B

EU

NG

PR

AH

350

-60

18C

HO

B M

UO

Y4

40-5

019

CH

OB

PIR

440

-50

20C

HO

B K

RA

O4

40-5

021

CH

RO

RK

CH

AM

BO

RK

440

-50

22S

LAB

KD

AO

NG

350

.023

AN

DA

UN

G L

VE

440

-50

24TU

OL

TRE

A T

BO

NG

440

-50

25TU

OL

TRE

A C

HH

EU

NG

440

-50

26TU

OL

SA

MB

O4

40-5

027

KA

ND

IEN

G2

40-5

028

TRA

PE

AN

G S

NA

O4

45.0

29C

HH

I PE

AN

G2

40-5

030

CH

HIN

KLA

340

-50

31TH

NO

NG

340

-50

32C

HH

RO

Y C

HA

NG

HA

R3

40-5

033

TRA

PE

AN

G K

RA

PE

U2

50.0

34P

AU

N2

40-5

035

RO

KA

R K

HN

UO

CH

CH

HE

UN

G2

40-5

036

STU

EN

G P

EN

H2

50.0

37K

HN

AC

H K

RA

SA

NG

240

-50

38S

AM

AK

I2

40-5

039

CH

HI K

O2

40-5

040

TUO

L K

AN

DA

L TB

ON

G2

50.0

KAM

PON

G C

HAM

PR

OVI

NC

ELI

ST O

F FA

VOU

RAB

LE V

ILLA

GES

FO

R D

RIL

LIN

G A

ND

INST

ALLA

TIO

N O

F H

AND

PU

MPS

CH

OB

THM

A P

EC

H

BO

EN

G P

RU

OL

TBO

UN

G K

HM

UM

CH

IKO

R

MO

UN

G R

IEV

Sr. N

O.

DIS

TRIC

TC

OM

MU

NE

VILL

AGE

No.

of H

AND

PU

MP

REC

OM

MEN

DED

D

RIL

LIN

G D

EPTH

(m)

REM

ARK

S

41C

HEU

TEAL

CH

HR

UM

245

.042

TRAP

EAN

G C

HR

OR

K2

40-5

043

KRAO

Y VA

T2

40-5

044

TA K

EB2

40-5

045

PAO

N3

40-5

046

POU

RO

UN

G3

50.0

47N

EI P

HSA

R3

40-5

048

TA T

RAV

340

-50

49D

AMN

AK C

HAR

240

-50

50PR

EK K

AMPE

NG

240

-50

51EI

SA M

EAN

CH

EY2

40-5

052

CH

HIE

CH

HO

UN

GR

OK

240

-50

53D

OU

NG

PR

EAH

245

.054

RO

UN

G3

40-5

055

TRAC

H2

40-5

056

ANC

HAE

UM

240

-50

57N

EAM

EUN

KH

EUN

G3

40-5

058

CH

AN T

OU

NG

440

-50

59TR

APEA

NG

TH

OM

440

-50

60BR

A YA

B2

40-5

061

SAN

GKO

M T

HM

EI4

40-5

062

ANG

KOR

CH

EA3

40-5

063

SRA

LOR

B3

40-5

064

DAN

G K

AMBE

T3

40-5

065

KHLA

ON

G4

50.0

66TR

APEA

NG

DO

M4

40-5

067

KHN

AR5

40-5

068

ANG

KOR

CH

EY8

45.0

69VE

AL K

HN

ACH

440

-50

70TR

A BO

KS3

40-5

071

NIK

OM

LEU

340

-50

72N

IKO

M K

RAO

M5

40-5

073

TRAP

EAN

G S

ANG

KE4

40-5

074

BRA

THEA

T2

40-5

075

TRAP

EAN

G K

OU

440

-50

76KI

EN R

OM

IET

740

.077

AND

AUN

G P

OK

440

-50

SRAL

AB

ANH

CH

AEU

M

TBO

UN

G K

HM

UM

Sr. N

O.

DIS

TRIC

TC

OM

MU

NE

VILL

AGE

No.

of H

AND

PU

MP

REC

OM

MEN

DED

DR

ILLI

NG

DEP

TH (m

)R

EMAR

KS

78LN

GIE

NG

350

.079

KO K

I5

40-5

080

CH

RAB

340

-50

81SM

AOG

N7

40-5

082

LVEA

TH

UM

250

.083

PHU

M B

UO

N D

ABBR

AMM

UO

Y3

40-5

084

THLO

K PO

NG

RO

440

-50

85PH

UM

PI D

ABR

AMPI

350

.086

KIEN

CH

OR

K4

40-5

087

LVEA

TO

CH

240

-50

88TE

P N

IMIT

H3

40-5

089

KBAL

BEU

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========================================================================================

ANNEXURES

BORE WELL SCHEDULE ANNEXURE I For Official use only Date Received: Entered by (name):

Date Entered: Signature

Standard Well Number: Other Number: 1. GENERAL INFORMATION Province: ……………………………………………………………….

Implementing Organization: …………………………………………...

District: ……………………………………….....................................

Supervisor: ………………………………………………………………

Commune: ……………………………………………………………..

Estimated Number of Beneficiaries: …………………………………...

Village: …………………………………………………………………

X-Coordinate of Well (UTM): ………………………………………….

Location Description: …………………………………………………

Y-Coordinate of Well (UTM): ………………………………………….

………………………………………………………………………….. Elevation by GPS (m above MSL): ………………………………….. Successful Well Dry Well 2. TECHNICAL DATA Type Drilled Well Purpose: Domestic Use DRILLING INFORMATION INFORMATION ON MATERIALS

Date Start: ……………………... End: ………………………………… Gravels (m3): …………………………………………………………….

Rig Type: ………………………………………………………………... Cement (Bags): …………………………………………………………..

Drilling Method: ………………………………………......................... Bentonite (Bags): ………………………………………………………..

Flushing Medium: ……………………………………………………… Sand: …………………………………………………………………….

Borehole Diameter (mm): …………………………………………….... Other (Specify): …………………………………………………………

Total Drilling Depth (m): ……………………………………………….

Inner Casing Diameter (mm): ………………………….......................

Total Length of Casing (m): …………………………………………....

Casing Material: ………………………………………………………...

ID Screen (mm): …………………. Slot Size (mm): ………………….

Screen Setting (m): From: ……………… To: ………………............. PUMP INFORMATION

Screen Material: ………………………………………………………... Pump Installed: Yes No

Static Water Level (m): ………………………………………………… Type of Pump: Hand Pump Motor Pump Other

Dynamic Water Level (m): …………………………………………….. Model: ………………………………………………………………….

Yield (m3/hour): ………………………………………………………... Date of Installation: ……………………………..…………………….

Well Development: Compressor …………………………..hr Turbine / Submersible ………………hr Chemical Treatment ……………….. hr

Depth Setting (m): …………………………………………………….

Method: ………………………………………………………………..... Yield (m3/hour): …………………………………………………………

Date Start: ………………… Total Duration (h): …………………….. Rising Main Material: ………………………………………………….

3. WATER QUALITY 6. LITHOLOGY AND WELL SPECIFICATION

Taste: Sweet Salty Bitter Tasteless Screen Casing Seals Depth (m) Log Lithology Description and

Remark Color: Clear Gray Yellow Brown

Odour: No Yes

10

pH: …………………………………………………………………..

Electrical Conductivity (μS): ……………………………………….

20

4. OTHER INFORMATION 5. SKETCH OF WELL LOCATION:

30 40 50 60

70

80 90 100

Log Legend:

Hard Rock Soft Rock Gravel Coarse Sand Fine Sand Clay

Static Water Level:

Province: ……………………………………………………………………………………

hour min hour min

(m) (l/min} (m3/h) (m)

0 0

1 1

2 2

3 3

4 4

5 5

6 6

7 7

8 8

9 9

10 10

12 12

14 14

16 16

18 18

22 22

24 24

26 26

28 28

30 30

35 35

40 40

45 45

50 50

1h 00 60 1h 00 60

70 70

80 80

90 90

100 100

110 110

2h 00 120 2h 00 120

140 140

160 160

3h 00 180 3h 00 180

200 200

220 220

4h 00 240 4h 00 240

270 270

5h 00 300 5h 00 300

330 330

6h 00 360 6h 00 360

7h 00 420 7h 00 420

8h 00 480 8h 00 480

Measure Discharge by 'V' notch (90)/ Orifice Plate & Discharge

Pipe/ Measured Container

Location: ……………………………………………………………………………………

Description: …………………………………………………………………………….. Name of Operator: ……………………………………………………………………………

Signature: ……………………………………………………………….

Date: ……………………………………………………………………….

Time: Time:

Elapsed time

Record Water Recovery Level

(Step Start)

Name of Technician: ……………………………………………….

(Step Start)

(Q) DischargeGround

Water Level

Elapsed time

2. Record Dynamic Water Level (Pumping Test) 3. Record Recovery Water Level (Recovery Test)

Village Code Number: ……………………………………………….Standard Well Number: ……………………………………………………………

District: ………………………………………………………………………………………

Commune: …………………………………………………………………………………

Village: ………………………………………………………………………………………

Implementing Company: …………………………………………………………………

Capacity of Pump: ………………… M3/h. Max Total head …………………

Pump Depth Installation: ……………………………………….m

Starting Date: …………………………………………………………………………………….

Finishing Date: …………………………………………………………………………………

1. General Information

PUMPING AND RECOVERY TEST RECORDING SHEET

PUMPING DATA SCHEDULE

ANNEXURE II

ANNEXURE III

WELL PUMP TRAINING & RECEIPT OF TOOLS AND SPARE PARTS RECORD

STANDRD WELL NUMBER:…………………………………. VILLAGE:…………………………………..

PROVINCE:…………………………………………. District:……………………………………………………… Commune:………………………………………….. Village:………………………………………………………..

CONTRACTOR:………………………………………………………………………………………………………………..

HEAD OF WSUG NAME:………………………………………………………………………………………………….

Member of WSUG (Trained Repairer):………………………………………………………………………….

Members of WSUG:……………………………………………………………………………………………………...

NAME OF TRAINEES:………………………………………………. and:……………………………………………..

SIGNATURE:…………………………………………………………… and:……………………………………………...

SIGNATURE:…………………………………………………………… and:……………………………………………...

DATE OF TRAINING:………………………………………………………………………………………………………

We acknowledge that we have receive the following…………………………………………………………………………………………………………………

Training on the operation and Maintenance of Afridev Hand Pump:…………………………………………………………………………………………………………………………

Tool kit:…………………………………………………………………………………………………………………………

Spare Parts for three years:……………………………………………………………………………………………

cc:

Trainees:…………………………………………………………………….

Contractor:…………………………………………………………………

Project Manager:………………………………………………………..

ANNEXURE IV

PUMPING TEST RECORDING SHEET

For office use only Date Received:………………………………………….. Date Entered:………………………………………. Entered by (Name):………………………………….. Signature:…………………………………………….

BOREHOLE WELL WITH HANPPUMP

Standard Well number: /MRD/ Village code Number: 1. GENERAL INFORMATION

Province:………………………………....... Implementing organization:…………………………… District:…………………………….............. Starting date:………………………………………..…………. Commune:………………………………… Finishing Date:……………………………………..…………. Village ::…………………………………….. Name of Operator:…………………………….…………….. Location Description:………………. Casing diameter (mm):……………………………………. .................…………………………………….. …………………………………………………..

2. PUMPING RESULT Static water level:……………………………. Dynamic Water level (mm):………………………… Pumping Rate (m3/h):……………………. Drawdown (m):…………………………………………….. Duration of pumping test (h):………… Well Depth (m):……………………………………………..

3. RECOMMENDATION FOR PUMP DEPTH INSTALLATION Type of Hand Pump Afridev Installation Depth (m):……………………………………………

Name of Technician: _______________________________ Date: ______________________________________

Signature: __________________________________________