Vanuatu

Hydrological Baseline Studies

Stage 1: Technical Assistance to the Department ofGeology, Mines and Water Resources

By

Harald Scholzel

November, 1998 SOPAC Preliminary Report 101

This project is funded by AusAID through bilateral support to the Vanuatu Government

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Table of Contents

VANUATU ..............•.•...................•.........................•.............................................................................................. 1

HYDROLOGICAL BASELINE STUDIES 1

STAGE 1: TECHNICAL ASSISTANCE TO THE DEPARTMENT OF GEOLOGY, MINES ANDWATER RESOURCES 1

1 PURPOSE OF THE VISIT 3

2 WATER LEVEL RECORDERS 3

2.1 RECORDER INSTALLATION 4

2.2 RIvER GAUGING 4

2.3 ASSESSMENT OF THE INSTALLATION AND GAUGING PROCEDURES 5

3 OFFICE PROCEDURES 5

3.1 GENERAL 5

3.2 HYDROLOGICAL DATA PROCESSING SOFTWARE 7

4 SITING OF WATER LEVEL RECORDER LOCATIONS ON SOUTH MALAKULA 7

5 CONSULTATIONS AND CO-ORDINATION WITH DGMWR AND AUSAID 8

APPENDIX 1: INSTALLATION AT THE ADSONE RIVER 10

APPENDIX 2: INSTALLATION AT THE WAMBU RIVER 13

APPENDIX 3: DRAFT PROPOSAL FOR THE REVISION OF THE TERMS-OF-REFERENCE OFTHE HYDROLOGICAL BASELINE STUDIES 16

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Hydrological Baseline Studies, Stage 1 Page 3

1 Purpose of the Visit

This visit to Vanuatu was the third of a series of visits to the Department of Geology, Minesand Water Resources (DGMWR) to provide Technical Assistance to the AusAID fundedHydrological Baseline Studies (HBS) project. The initial visits (Scholzel and Scott, 1998 andScott, 1998) were devoted to field work required to identify suitable recorder sites in SouthSanto, to test equipment recently recovered from the field and to strengthen the basis forongoing co-operation on the project. This visit was planned to address the following issues:

1. to supervise the installation of two water level recorders on two sites in Santo,2. to assess DGMWR's capabilities to install and calibrate those recorders,3. to assess DGMWR's capabilities to undertake all related activities such as river gauging,4. to site two more water level recorder locations in South Malakula,5. to discuss with DGMWR, office procedures for the secure storage of retrieved data,6. to install the selected hydrological database software TIDEDA on DGMWR computers,7. to provide an introduction to TIDEDA,8. to initiate the data processing procedures, and9. to consult with the Director of DGMWR, the Permanent Secretary of the Ministry of Land

and Resources and AusAID on the project progress.

The following sections record the installation process, recommendations and, wherenecessary, any follow-up actions.

2 Water Level Recorders

The two sites seen as most suitable locations for the water level recorders in South Santowere identified during a field trip earlier this year (Scholzel and Scott 1998). The selectionprocess was based on the following criteria:

• Geographical relation to area of best prospectivity• Hydrological performance• Accessibility• Catchment Size

The equipment planned for installation at the Adsone River and at the Wambu River wastested prior to this mission (Scott 1998). Though some concerns had been raised withrespect to the accuracy and reliability of one of the pressure transducers (signal drift of SPINo. 5068) a second test carried out by DGMWR showed that after some maintenance workthe transducer worked satisfactorily. Considering the time frame of Stage 1 it was decided toinstall the SPI and see whether it worked satisfactorily and, in case problems occurred, toreplace it when other equipment became available. This strategy ensured at least that theconstruction parts were in place and only equipment replacement would be necessary.

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Hydrological Baseline Studies, Stage 1 Page 4

2.1 Recorder Installation

The recorder installation at the Adsone River consisted of the following parts:

A solid concrete foundation located behind a rock to protect it from floating debris orrocks which might be transported by the river in times of flood.

Two horizontal U-profile steel sections sunk into the concrete.

Two vertical U-profile sections hinged together to accommodate the SPI and fastened tothe horizontal sections.

A staff gauge riveted to the hinged U-profile.

A buried 30 m flexible Polyethylene pipe to provide protection for the SPI cable.

A waterproof Polyester cabinet to house the datalogger, power regulator and the backupbattery. The cabinet is mounted to steel racks set in concrete. The steel racks alsosupport the solar panel.

All parts i.e. the cable and pipes have been carefully secured against extreme flow events.For figures and photographs please refer to Appendix 1. Photograph A 1.1 and A 1.2 show thefinal installation. Figure A 1.1 displays the cross-section for the gauging.

Total time required for the installation and calibration was 2 days (21 st and 22nd of October)not including 1 day (20th of October) to travel from Port Vila to Luganville and to organisetransport, labour and the purchase of locally available material in Luganville. All parts workedperfectly at the time the installation team left the site.

The installation at the Wambu River was very similar to the one at the Adsone River, though,the site was less favourable due to steep slopes making it difficult to find a safe spot for thedatalogging cabinet within 30 meters (cable length for the SPI). For figures and photographsplease refer to Appendix 2.

By the time the installation was finished we could no longer establish communication with theSPI and the solar panel was failing to charge the battery, though producing sufficient voltage.During the various checks the logger cable was damaged and snapped (there may havebeen internal cable faults before that occurred.). The broken cable and the charging failurecould not be repaired. Since we could not locate the exact source of the failure all equipmentwas left in the field. Action to rehabilitate the installation will be taken very soon and isdiscussed further below. It should be noted that we were installing equipment which, thoughcarefully tested, had already been in the field for up to a decade. In any case, failures duringtransportation can always occur.

2.2 River Gauging

During this trip no river gauging could be undertaken due to further equipment breakdown.Two counters for the current meter would not work, though tested for functionality prior to thetrip. However, suitable gauging sites were selected and prepared so that gauging can becarried out as soon as the equipment was repaired.

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2.3 Assessment of the Installation and Gauging Procedures

The capabilities of DGMWR's Hydrologist Mr. Morris Stephen to install and calibrate theElsyde Chloe water level recorders are more than adequate. Mr. Stephen is capable ofjudging on a case by case basis which particular steps should be taken during the entireprocess and adjusts swiftly to changing situations. The only cause of concern is that moreattention should be paid to the fragility of the equipment to avoid problems as occurred withthe Wambu River installation. It would be very useful if he could undertake some training tofurther develop the ability to diagnose and repair equipment faults.

Gaugings could not be carried out and therefore that capability was not assessed. But fromour previous co-operation with DGMWR it is believed that Mr. Stephen has sufficientexperience to independently carry out river gauging. However, though pure gauging skills aresufficient, background knowledge of river hydraulics particularly on the concept of flowcontrols in rivers and site selection for gauging should be enhanced by further theoreticaland on-site training.

With respect to the training there are serious concerns about the focus of the project on oneperson. Mr. Morris Stephen represents DGMWR's entire corporate knowledge on hydrology.If h.ewas to leave his post for whatever reason the project would inevitably fail. Currently theproject doesn't contribute in any way to the resolution of this situation since all activities havebeen grouped around Mr. Stephen. There is an urgent need to address this problem.

This point has already been discussed with DGMWR and AusAID representatives.Considering that DGMWR doesn't seem to be in the position to contract a secondHydrologist or technician with its own funds consideration should be given to hiring aqualified person through project funds until DGMWR disposes of sufficient funds to establishthe second position. Proposals concerning this problem will be discussed further below.

3 Office Procedures

3.1 General

A review of the present office procedures in DGMWR was undertaken during the first andsecond trip resulting in the outline of a draft manual submitted to DGMWR during this trip.This manual will describe the office practices to be used by the Department of Geology,Mines and Water Resources (DGMWR) to register, process, archive and review hydrologicaldata. The procedures are designed to ensure that:

o A high standard of hydrological data is archived,o The processing of all field data is consistent and traceable,o Stored data are secure and accessible,o Information can be supplied to data users with confidence.

The above sub-division of office practices can be elaborated on as follows:

• Register: This involves the maintenance of the following indexes or registers.

o Hydrological sites (river and rainfall)o Site history

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Hydrological Baseline Studies, Stage 1 Page 6

o Flow gaugingo Data (recorder cartridge or batch of manual data)o Equipment (transducers, recorders, power supplies, raingauges, flow meters, etc)

• Process: This involves the conversion of data from recorder cartridges, charts or manualrecords into the database.

o Transfer of data from recorder cartridges to computer databaseo Calculation and computer storage of flow gauging informationo Preparation and computer storage of stage-discharge relationshipso Input of manually recorded datao Production of reports for site history and data registers

• Archive: This involves systems for the secure storage of manual and computer files.

o Storage of original recordso Update of computer archiveo Computer archiving procedures

• Review: This involves the routine analysis of recorded data to check and report on itscompleteness and accuracy.

o Six-monthly report on the state of the archiveo Annual data audit

The above practices are to be carried out within an office system that provides clearstandards for:

o Site numberingo Computer file namingo Computer directory structure organisationo Data processingo Item naming

The development of the Office Procedures Manual is proceeding and a companion FieldProcedures Manual is planned. Mr. Stephen is involved as a partner in the development ofthese procedures as it is essential that he takes ownership of the documents and becomesresponsible for their implementation. Where appropriate, organisations that can be expectedto have a stake in particular matters will be consulted. Already while developing a sitenumbering system for the hydrological data archive we have consulted with the VanuatuMeteorological Service (VMS), the Bureau of Statistics, the Department for Agriculture, theDepartment of Forestry and Lands and Survey to ensure that DGMWR's system would, asfar as possible, be compatible with any existing conventions. As a consequence DGMWRhas adopted The Bureau of Statistics island numbering convention to contribute to a sitenumber made up as follows:

o A two digit island number, e.g. 55 for Efateo A two digit catchment number, e.g. 04o A three digit number for the station within the catchment with the first digit to identify

the type of the station, e.g. 102

The result of this procedure is a unique identification number, e.g. 5504102 would clearlyidentify a water level recorder located at the Epule River on Efate. The system was tested byDGMRW and the first data sets using the unique numbering system were produced for the

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Hydrological Baseline Studies, Stage 1 Page 7

island of Efate. A separate site index will be maintained to keep track of the site numberingsystem.

Work was further initiated to produce maps (on hardcopies) for Santo and Efate showing thedifferent river catchments supporting the site index. Since DGMWR has most of its spatialdata stored within Geographical Information Systems (GIS) these maps should be madeavailable in digital format at a later stage.

3.2 Hydrological Data Processing Software

Currently DGMWR is using different data processing, analysis and archiving software, eachspecific to the respective manufacturer of the equipment in use producing different format asoutput files. This fragmentation has inhibited the development of a straightforward andsystematic approach to data management. Evaluation of water level recorder data, ifretrieved at all, has been done by ORSTOM in Noumea, New Caledonia. Therefore DGMWRknowledge of data analysis and presentation is fairly sketchy and undeveloped.

After discussions with his SOPAC counterparts, Mr Stephen expressed a preference for theTIDEDA (Time Dependent Data Analysis) software developed by the National Institute ofWater & Atmospheric Research Ltd (NIWA) in New Zealand. Mr Stephen has already hadsome experience with the DOS version of the program, which DGMWR has owned since1983 (paid for by NZ ODA). In addition there is an outstanding commitment from NIWA tosupply a TIDEDA for Windows upgrade together with a week of training (both also suppliedthrough NZ ODA). This training opportunity will be addressed further below.

The data processing procedure was initiated and several original Chloe recorder data fileswere transformed into TIDEDA data format using a program developed by SOPAC for thispurpose. The new site numbering system was applied and data evaluated introducing MorrisStephen to the data analysis and graphical features of TIDEDA. The main intention here wasto enable DGMWR to transfer and enter all available hydrological data and provide a soliddatabase which can later be used to provide a focus for the specific TIDEDA training to beprovided by NIWA.

4 Siting of water level recorder locations on South Malakula

Work on Malakula was hampered from the very beginning of the project, by transportproblems. The original arrangement with ISCOR, the mining company operating in SouthSanto and South Malakula, was that they would provide helicopter support when necessaryto the project. The problem has been addressed by consulting with Tamara Penny fromAusAID during a meeting held on the 19th of October 1998. It was agreed that clarification onthe commitment of ISCOR should be sought while the work in Santo was carried out.

During a consultation with the Senior Exploration Geologist of ISCOR, Mr. Jim Kerr itbecame clear that ISCOR was no longer working in Malakula because mineral prospectivityin the respective licenses was very poor. Mr. Kerr further thinks that it was highly unlikely thatISCOR will resume mining operations in South Malakula. In response to that, no furtherattempts have been undertaken to site water level recorders in South Malakula. The issue

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Hydrological Baseline Studies, Stage 1 Page 8

has been brought to the notice of DGMWR and AusAID and discussed during a meeting heldon the zs" of October 1998.

The preliminary outcome is that due to the unlikelihood of any mining operations in SouthMalakula no water level recorders will be installed on Malakula.

5 Consultations and Co-ordination with DGMWR and AusAID

Monday, 19th of October 1998, 1:30 PM at AusA10

Prior to the trip to Santo a co-ordination meeting was held with Tamera Penny (AusAID),Morris Stephen (DGMWR) and (Harald Scholzel). The principal objectives of this meetingwere:

1. to come to a decision on the installation of two water level recorders in South Malakula,i.e. the delays due the unavailability of adequate transport in Malakula;

2. to decide whether the project should be extended to Pentecost;

3. to discuss the staffing situation at DGMWR;

4. to brief AusAID on the general project progress; and

5. to discuss equipment purchase for Stage 1 originally scheduled for Stage 2 of the project.

Since most of the problems raised during the meeting have a crucial effect on the entireproject it was agreed that the consultation of Senior staff from DGMWR and AusAID shouldbe sought to make the relevant decisions, particularly on the extension to Pentecost and thecontinuation of the program in South Malakula as well as the staffing situation in DGMWR.

Wednesday, 2ath of October 1998, 10:00 AM at the Ministry of Land and Resources

The following people attended the meeting:

Mr. Stanley Temakon, Permanent Secretary of the Ministry of Land and ResourcesMr. Steve Hogg, First Secretary, AusAIDMr. Robert Ferraris, Natural Resources Adviser, AusAIDMs. Victoria Hillman, Senior Project Officer, AusAIDMs. Tamera Penny, Project Officer, AusAIDMr. Chris loan, Acting Director, DGMWRMr. Morris Stephen, Hydrologist, DGMWRMr. Harald scholzet, SOPAC

The objectives of the meeting were similar to those of the previous week. The outcome ofthis meeting can be summarised as follows:

1. The newly discovered fact that mining operations are highly unlikely to be started inSouth Malakula and Pentecost due to bleak prospectivity results suggests that no waterlevel recorders should be installed in either of the two islands. A definite decision on thismatter will be submitted to AusAID shortly by DGMWR.

2. This leads to the question whether more water level recording stations should be set upand, therefore, whether new equipment should be purchased.

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Hydrological Baseline Studies, Stage 1 Page 9

3. Procedure development and training requirements are greater than originally perceived.

4. The staffing problem cannot be resolved with resources from DGMWR in the near future.The project should seek short-term alternatives to the contracting of staff by DGMWR.

5. SOPAC, after consulting with DGMWR, will redraft the original project proposal toaccommodate the newest developments. The proposal has been attached asAppendix 3.

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Appendix 1 Page 10

Appendix 1: Installation at the Adsone River

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Appendix 1 Page 11

Photo A1.1: Installation of the SPI at the Adsone River

Photo A 1.2: Datalogger and solar panel installation at the Adsone River

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Appendix 2 Page 13

Appendix 2: Installation at the Wambu River

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Appendix 2 Page 14

Photo A2.1: SPllnstallation at the Wambu River, Assistants

Logger Installation

SPI Installation

Photo A2.1: Water level recorder installation at the Wambu River

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Appendix 3 Page 16

Appendix 3: Draft Proposal for the Revision of the Terms-of-Reference of the Hydrological Baseline Studies

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Appendix 3 Page 17

Australian AidGovernment of VanuatuDepartment of Geology, Mines and Water ResourcesHydrological Baseline Studies- Revision of Terms of ReferenceBackground

The original Terms of Reference (TOR) for the Hydrological Baseline Study (HBS) describeda two stage project which had the objective to develop capacity and capability withinDGMWR for environmental monitoring by installation of a hydrological recording network,and establishment of an environmental monitoring program as components of a hydrologicalbaseline study in mineral prospecting areas.

The project was designed to provide environmental baseline data in areas of high mineralprospectivity in South Santo and South Malakula. Stage 1 of the project was to provide anetwork of four water level recorders within those areas and, as required, to provide trainingon survey techniques, sampling methodology, quality assurance, statistical analysis and datastorage. Stage 2 was to provide an environmental monitoring program with an emphasis oncommunity participation in aquatic biological surveys.

Stage 1 commenced with Technical Assistance from the South Pacific Applied GeoscienceCommission (SOPAC) and the following key results have been achieved:

• Water level recorder sites have been identified in South Santo.

• Two water level recorders have been installed in South Santo.

• An evaluation of training needs in the field and office was undertaken.

• An Office Procedures Manual is in preparation in collaboration with DGMWR.

• Hydrological data processing software has been selected and installed.

• Required data translation utility software has been developed and used.

• Development of a National Hydrological Archive commenced; and

• On-site field and office training was carried out.

These results are described in detail in three SOPAC Preliminary Reports'.

The work done to date revealed a number of issues which require a review of the originalTOR in order to ensure that the objective of the project can be met. These issues are asfollows:

• New prospectivity results on South Malakula (and Pentecost) indicate that futuremining operations are highly unlikely in those areas;

• DGMWR has only one staff member working on project implementation whereasthe original project indicated that three staff would be available;

• The training needs analysis and the associated need for the development ofprocedures to ensure a basic level of quality assurance will require more technicalassistance than originally budgeted for;

• The condition of previously used equipment recently recovered from the field willrequire earlier procurement of replacement items than allowed for;

I Scholzel and Scott (1998), Scott(1998), Scholzel (1998)

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Appendix 3 Page 18

• Changes in instrumentation technology raise questions about the appropriatenessof the equipment specified in the original project; and

• The perceived need, at this stage of mineral prospecting and exploration, for higherpriority for basic hydrological monitoring compared with environmental monitoring.

These issues were discussed at a meeting at the Ministry of Lands and Resources on thezs" of October 1998 with representatives from AusAID, DGMWR and SOPAC. It was agreedthat, without revision of the scope of the project, the original project objectives could nolonger be achieved. As a result SO PAC was asked to provide AusAID and DGMWR with adraft proposal to adjust the project to the present situation.

The following sections describe a revised project designed to address the concerns notedabove. The basic objective of the project remains unchanged but the scope of the project hasbeen adjusted to take account of the demonstrated needs and changing priorities. Acommentary is provided to highlight the changes to the original project.

Objectives

The purpose of the Technical Assistance is to develop capacity and capability withinDGMWR for environmental monitoring by

the installation of a hydrological recording network;

the establishment of an environmental monitoring program;

the participatory implementation of a data processing and archiving system forhydrological and biological data and their standardisation for Vanuatu; and

the temporary funding of an Hydrologist or a Technician to support the project

Rationale for change:

1) The need for standardisation within a National system is made explicit.

2) The need for additional staff support is recognised.

Scope of the Project

Stage 1 (NB: Only the changes from the original scope are noted here.)

In collaboration with DGMWR staff, develop Office & Field Procedure manuals to ensure thatbasic levels of quality assurance can be achieved and maintained.

Rationale: The specific need for documentation in support of quality assurance goalsis incorporated.

Facilitate DGMWR's recruitment of a Hydrologist or Technician.

Rationale: The need for additional staff is addressed.

Organise procurement of three replacement water level recorders.

Rationale: The procurement of water level recorders is rescheduled from Stage 2 inorder to replace faulty or obsolete equipment.

Organise procurement of ten rain gauge data cartridges.

Rationale: DGMWR already have Obsermet rain gauges with unusable datacartridges. Procurement of ten data cartridges will allow deployment of at least fivegauges for less than the cost of the planned purchase of two new gauges.

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Appendix 3 Page 19

Establish five water level and flow recording stations on Santo in areas of high miningprospectivity .

Rationale: One additional water level recorder is proposed in consideration of thepriority being given to the establishment of a hydrological network. Monitoring isfocussed on Santo where mineral prospectivity is still high,

Establish five recording rain gauges within the monitored river catchments.

Rationale: Several more rain gauges are proposed but without an increase inequipment procurement costs,

Stage 2

The broad scope of Stage 2 has not been changed. However, the allowance for fees hasbeen reduced and the allowance for car rental nearly eliminated in order to provide savingsto strengthen Stage 1. Equipment procurement was moved from Stage 2 to Stage 1 toensure that equipment is available for installation.

Duration

The duration of the project is not expected to be affected by the proposed modifications.

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Appendix 3 Page 20

Attachment AEquipment specificationsWater level recorders(Elsyde Chloe E brand) comprisingSensors:S2 submersible pressure transducer type water level sensors, with probe of + 0.5% accuracytemperature compensation, working range 5-30°C. Accuracy should be + 10 mm or betterRecorder:3 data loggers capable of storing in excess of 3 months data from sampling periods rangingfrom 1 to 60 minutes. Real time capability.6 Elsyde EEPROM memory cartridges for the transfer of dataCable:3 x 30 m cable connecting recorder to probeHousing:3 robust housings for the recorder, with 12 V sealed lead acid rechargeable batteries and75W and 53W solar panels

To be replaced by:Transducer: 3 Greenspan PS200/210 (0.1 % precision)Datalogger: 3 Unidata 6508 MicrologgerCable: 3 30 m cable connecting datalogger and transducerHousing: 3 Aluminum cabinetsSoftware: 1 Datalogger support softwareDownload: 1 microccomputer to download recorded data

Rationale: Water level recorders: The French manufactured water level monitoringequipment specifed in the original proposal is no longer available (manufactureceased in 1993). New equipment available from the same manufacturer is moreexpensive than equivalent equipment manufactured in Australia. Technical supportand maintenance are more economic and convenient if obtained from a supplierwithin the region. The equipment proposed is manufactured in Australia andcustomised for hydrological applications in New Zealand

Data Cartridges2 automatic recording rain gauges with 0.2 mm buckets complete with an internal electronicdatalogger capable of storing in excess of three months data. Standard 200 mm diameteropening

To be replaced by:10 omc-041 data cartridges with external power supply compatible with the OMCOBSERMET tipping bucket raingauge

Rationale: DGMWR already own 10 Obsermet tipping bucket rain gauges which areunuseable because the data cartridge batteries are fully discharged and cannot bereplaced. Purchase of 10 new upgraded data cartridges (with external powersupplies) will make it possible to deploy at least five rain gauges for a lower total costthan the proposed purchase of 2 new complete rain gauges.

Stream sediment sampling equipmentOne set of bedload samplers for wading measurements, to complement existing equipmentat DGMWRWater sampling equipmentGeneral items such as cooler, ice pads, sample bottles and bailers for the collection ofsamples for water quality testing

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Appendix 3 Page 21

Indicative CostsGOA indicative costs (A$)

Original Terms of Reference

Stage 1

TA Personnel (SOPAC)

Per diems (Vt15000 x 40 days)

Travel Suva-Vila return x 4 (2 visits peryear)

Training and survey

Proposed Revision

Per diems(18000 VT x 50 days)

Travel Suva-Vila rtn 5 trips (3 fist year, 2 second year)

Subtotal:

Equipment and Counterpart:

Purchase of three complete water level recorders

Purchase of 10 OBSERMET data cartridges

Hiring of counterpart (60.000 VT @ month @ year)

Communication, reports

Subtotal:

TA Personnel (SOPAC) fee 20 days @A$600

Internal travel- Vila, Malekula, Santo rtn 8 Internal travel- Vila, Santo rtn 12 (2 pers @6 a year)x 2pers x 2 yrs

Stage 2

TA Personnel

Fees (147 days @ $600 + 2 days for brief,debrief)

Per diems

Accommodation

Travel Syd-Vila return x 5

brief, debrief

internal air travel

Car rental (147 days, Vila and field)

Communications, reports

Equipment

3 x water level recorders, pressuretransducers, cables etc.

2 x tipping bucket rain gauges withancillary equipment

Stream sediment sampling equipment

Water sampling equipment

Training and survey

Training materials

Subsistence (3 counterparts x 112 d @$22)

Counterpart travel Vila - Suva

Counterpart per diem ( $100 x 14days)

Subtotal:

Total Stage 1

Transport will be basically provided by DGMWR

Subtotal:

Removed to Stage 1

Removed to Stage 1

Subtotal:

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Old Cost A$ Pro. Costs A$

$7,500.00 $11,600.00

$5,000.00 $6,250.00

$12,500.00 $17,850.00

$15,000.00

$6,000.00

$10,000.00

$1,000.00

$12,500.00 $48,850.00

$4,000.00

$12,000.00

$8,000.00

$4,000.00

$16,500.00

$1,000.00

$1,400.00

$20,000.00

$72,250.00

$89,400.00 $89,400.00

$11,760.00 $11,760.00

$14,700.00 $14,700.00

$11,650.00 $11,650.00

$400.00 $400.00

$5,000.00 $5,000.00

$14,700.00 $1,950.00

$2,000.00 $2,000.00

$149,610.00 $136,860.00

$37,000.00

$6,000.00

$1,200.00 $1,200.00

$700.00 $700.00

$44,900.00 $1,900.00

$5,000.00 $5,000.00

$7,400.00 $7,400.00

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GOA indi e costs (A$)

Original Terms of Reference Proposed Revision Old CostA$ Pro. Costs A$

Travel for counterparts (3 x 3 sites x 8 $18,000.00 $18,000.00trips @ $250)

Labour $3,000.00 $3,000.00

Water sample analysis (21yr) $56,000.00 $56,000.00

Sediment analysis (baseline only) $12,000.00 $12,000.00

Subtotal: $101,400.00 $101,400.00

Total Stage 2 $295,910.00 $240,160.00

Grand Total Stage 1 and Stage 2 . $312,410.00 $312,410.001

GOV costs (A$)

Staff salaries Hydrologist 2 yr @ 25% Staff salaries 1 Hydrologist 2 yr @ 50% $7,200.00 $14,400.00

2 Technicians 2 yr @ 25% Staff Salary Director 2 yr @ 20 % $3,750.00 $5,000.00

Total $10,950.00 $19,400.00

Grand Total $10.950.00 $19.400.001

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