INFORMATION ON THE LAHMEYER INTERNATIONAL GROUP, NO. 49 / JANUARY 2005

BOSNIA-HERCEGOVINA:400 KV TRANSMISSION LINE

ICELAND: 690 MW HYDROPOWER PLANT

KÁRAHNJÚKAR

YEMEN:70 MW DIESEL POWER PLANT AL-MANSURA

SUDAN: BASIC SURVEYING FOR MEROWE DAM PROJECT

COVER

Mujib Dam, JordanThe Mujib Dam is located near the mostancient road in the world, which has beencontinuously in use up to now, and whichwas used in past times by Abraham andLawrence of Arabia. The Wadi Mujib is alsocalled Jordan’s Grand Canyon. It cutsthrough the Jordanian highlands and, com-ing from the east, it flows into the DeadSea, the world’s deepest lake.

MASTHEAD

Publ isher : Lahmeyer In ternat iona l GmbH, Bad V i lbe l , Germany

Edi tor ia l Off ice : Jut ta Kaufmann, Bus iness Deve lopmentDes ign and L i thography: SaarRepro, Ot twe i le r, GermanyPr in t : Ot twe i le r Druckere i und Ver lag GmbH,

Ottwe i le r, Germany

Photograph ic Ev idence: Lahmeyer In ternat iona l ’s Photo Arch ive

© Lahmeyer In ternat iona l GmbH 01/05

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p. 3 Albania: The Reform of the Power Sector

p. 4 Yemen: 70 MW Diesel Power Plant Al-Mansura

p. 4 Kingdom of Saudi Arabia: 2400 MW Combined Cycle Power and Sea Water Desalination Plant in Jubail

p. 5 Pakistan: Feasibility Study for Fauji Korangi CCPP

p. 5 Bosnia-Hercegovina: 400 kV Transmission Line

p. 6 Germany: New 110/15 kV Substation Dessau-Alten

p. 7 Georgia: SCADA/EMS and Communication Systems for High-voltage Transmission Grid

p. 7 Iran: 30 MW Wind Park in Manjil

p. 8 Korea: Consulting Services for Business Development in the Photovoltaic Industry

p. 9 Iceland: 690 MW Kárahnjúkar Hydroelectric Power Plant

p. 10 Burkina Faso: Celebration on the Occasion of "Availability of Water from the Ziga Reservoir" in Ouagadougou

p. 11 Germany: Preliminary Design for the New Pumped Storage Plant Waldeck I

p. 12 Jordan: Mujib Dam

p. 13 Mozambique: Strategic Sanitation Plans for Seven Municipalities

p. 14 Sudan: Basic Surveying for Merowe Dam Project

p. 15 Croatia: Modernization of Railway Corridor Vc

p. 15 Greece: Stavros Depot of Athens Metro

p. 16 Venezuela: Metro Los Teques

p. 17 Greece: SYGROU - FIX Transfer Station in Athens

p. 18 Germany: Modernization of the Auxiliary Klingenberg Dam

p. 19 Germany: New Development of the ‘Berliner Platz’ in the City of Gießen

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Since almost one and a halfdecade, the engineers and consult-ants of Lahmeyer Internationalrealise the technical and economicrestructuring of national utilities inseveral transition economies.

A peculiarity is presented in Albania.Almost 99 % of the electricity gen-eration is provided by domestichydropower. At the beginning of thenineties, the country exported 20 %of its power generation.

In the nineties our power plant andelectrical engineers advised KESH,the Albanian Power Corporation, onthe modernisation of the largesthydropower plant (the Drin Rivercascade), the additional extensionwith thermal power plants and theconstruction of a new hydropowerplant.

At the end of the nineties the bal-ance supply situation in theAlbanian power sector fundamental-ly changed. The steadily increasingelectricity demand (about 10 % peryear from 1992) and unfavourablehydrological conditions followed toelectricity shortages in the country.At the beginning of this century, thedomestic power plants could onlycover about 50 % of the nationalelectricity consumption. For financial

reasons, but also because thecapacities of the transmission sys-tem were not sufficient, only onepart of the electricity gap could befilled through electricity imports. Thepopulation and the economy suf-fered from massive electricity out-ages.

Very low tariffs and high technicaland non technical losses of 40 to50 % in total were essential reasonsfor the high increase in electricityconsumption. KESH could notafford the costs of the powerimports with own resources. Thegovernment felt obligated to paydirect subventions at KESH.

Due to the energy crisis in Albania,the projects for LahmeyerInternational in the country alsochanged. In 2002 our engineersand economists participated in asectoral study. They recommended,among others:

• to slow down the high increaseof the electricity consumption,

• to reduce the technical and nontechnical losses of servicethrough the improvement of thenetwork capacities and adminis-trative measures,

• to bring step-by-step the elec-tricity tariffs for all consumption

groups, under consideration offinancial and social aspects, in acost-covering level,

• to prepare the organisation ofthe power industry in Albanianot only for the commercialisa-tion and privatisation but alsofor the integration into theUCTE1 zone and the SoutheastEuropean Electrical System.

Based on this study, the Govern-ment of Albania worked out a strat-egy for the modernisation of theenergy sector. In 2004, the firstmeasures for the unbundling of thethree functions (generation, trans-mission and distribution) were intro-duced at KESH.

For further support, KESH hasengaged in November 2004Lahmeyer International with anotherproject financed by the World Bank.The objective of the project is tostate and compare the differentoptions for:

• the organisation of the Albanianelectricity generation units,

• the organisation of the Albanianelectricity distribution divisions,

• the privatisation of the genera-tion and distribution functions,

• the introduction of competition.

The project shall be finished in July2005.

It is the start for the successfulprivatisation of KESH that should befinished, according to the plans ofthe Albanian government, in theyear 2007.

Hans-Joachim Kießling,Rosa Tarragó

The Reform of the Power SectorALBANIA

Electricity generationby hydropower plantsat the river Drin

1 UCTE – Union for the Coordination ofTransmission in Europe

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70 MW Diesel Power Plant Al-Mansura

The Public Electricity Corpora-tion (PEC), the Yemeni state-ownedutility under the Ministry ofElectricity, operates approx. 50thermal power plants, out of whichthree are conventional oil-firedsteam turbine power plants. Allother plants are diesel engine drivenplants, 40 of them operated in iso-lated grids.

The steam turbines in RasKanastib at Al-Hodeidah, in Al-Mukha and in Al-Hiswa at Adenhave a total capacity of 450 MW.The diesel power plants in the net-work compound have a combinedcapacity in excess of 200 MW, whilethe diesel power plants operating in

isolated grids have a capacity of235 MW. However, the contributionof the grid connected diesel plantsto the power generation is consider-ably lower. Numerous plants – even

of higher capacities – generateintermittent only due to outages andmaintenance, resulting in an overallavailability of around 60 %. TheMinistry of Electricity estimates thedemand on new power plants until2020 at 1,650 MW.

The 70 MW Diesel Power PlantAl-Mansura is being built on thesouth coast of the country in Aden.It will comprise seven mediumspeed diesel generator sets of simi-lar type incl. auxiliary equipment,waste heat recovery steam system,electrical plant installation with33 kV GIS switch gear, instrumenta-tion and control systems, watertreatment as well as interim fuel

storage capacities, in addition to thepipeline connection. The plant isdesigned to operate initially onheavy fuel oil as the main fuel andlight fuel oil as backup, and to be

YEMEN

convertible to dual fuel / natural gasoperation in the future.

The project is financed by a loanfrom the Saudi Fund for Develop-ment and by funds from the YemenGovernment. Lahmeyer International

was selected among ten short-listedconsulting firms under Quality- andCost-Based Selection (QCBS) toprovide the consulting services forthis project.

The consulting services duringthe implementation period of 18months comprise the project man-agement, design review andapproval, witness of factory tests,supervision of construction includingcommissioning, testing and handingover, as well as assistance to theclient during the 12 months defectsliability period.

Harald Neff

Aden site inspection in Mai 2004

The future location ofthe 70 MW dieselpower plant Al-Mansura near Aden

In July 2004, LahmeyerInternational, leading an advisoryconsortium, has been commissionedby the Power & Water UtilityCompany for Jubail and Yanbu(Marafiq) as Owner’s Engineer for theso called Independent Water &Power Project (IWPP) in Jubail, beingone of the first and biggest privatelyfunded projects in Saudi Arabia.

The dual-purpose installationshall provide power and desalinatedwater to the customers in JubailCity at the Saudi Arabian EastCoast, one of the most importantindustrial areas in Saudi Arabia. TheIWPP comprises a 2400 MW powerstation and a sea water desalinationplant of 300,000 m3 per day.

Bid submission from internation-al pre-qualified developers isexpected in February 2005.

Dr. Uwe Dammel

2400 MW Combined Cycle Power andSea Water Desalination Plant in Jubail

KINGDOM OF SAUDI ARABIA

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Feasibility Study for Fauji Korangi CCPP

Fauji Foundation has been declaredas pre-qualified by Private PowerInfrastructure Board (PPIB), Govern-ment of Pakistan and intends tosetting up a 150 MW dual-firedcombined cycle power plant (CCPP)at Korangi nearby Karachi under anIPP scheme.

The consortium LahmeyerInternational GmbH (LI) – NationalEngineering Services Pakistan (Pvt.)Limited (NESPAK) has been award-ed to undertake a feasibility studyfor this new CCPP. LI is consortiumleader.

Fauji Foundation is Pakistan’s largestwelfare cum industrial organizationand a fully self-supported private

sector entity. Its welfare operationsare financed through its industrialand commercial projects. It has 9million beneficiaries and has welfareoperation in education, health andvocational training areas. It spends80 % of its earnings on welfare.

The PPIB is the contract point toprivate sector investors concerningestablishing Independent PowerProducer (IPP) projects and relatedinfrastructure in Pakistan, includingthe negotiation of theImplementation Agreement (IA).PPIB also provides support to thepower purchaser and fuel supplierwhile negotiating the PowerPurchase Agreement (PPA), FuelSupply Agreement (FSA) / Gas

PAKISTAN

Supply Agreement (GSA), otherrelated agreements, and liaison withthe concerned local and interna-tional agencies for facilitating andexpediting progress of private sec-tor power projects.

The LI-NESPAK consortium will pro-vide the following services:

• Review of existing pre-feasibilitystudy report

• Data collection of the selected site• Review of basic project parame-

ters and conditions• Determination of general plant

requirements• Transportation study• Identification of optimized tech-

nical plant concept/configuration• Preparation of plant conceptual

design and implementation con-cept

• Environmental impact assess-ment (EIA)

• Review of existing project agree-ments

• Estimation of project cost andfinancing plan

• Financial analysis and tariff cal-culations

• Risk analysis• Identification of required permits

and approvals• Preparation of feasibility study

report

The successful co-operationbetween LI and NESPAK has beenproven in several former projects.

Bernhard Paulus,Michael Dürr

The site for the future Combined Cycle Power Plant Fauji Korangi nearby the city of Karachi

400 kV Transmission Line

Prior to the Balkan War, theentire installed power generationcapacity in Bosnia-Hercegovina was13 Gigawatt (GW), while the maxi-mum demand was 11 GW. 40 % ofthe generation was by hydropowerstations, and 60 % by thermalpower stations. During the war, 56% of the installations were damagedor rendered unusable.

The transmission network com-prised a total length of 5,400 km,and the local distribution networks92,000 km. The transmission back-bone consisted of a 400 kV networkwith 8 substations, which was inter-connected with the transmissionsystems of Croatia, Montenegroand Serbia. 60 % of the intercon-nections were also damaged during

BOSNIA-HERCEGOVINA

the war. The energy supply is nowbeing reconstructed in three steps:

• Power I, Emergency Programmefor Energy Supply

• Power II, Rehabilitation ofEnergy Supply

These two steps have alreadybeen completed.

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In June 2002, LahmeyerInternational (LI) was contracted bythe World Bank, to provide consul-tancy services for the third step(Power III). This project is beingfinanced by a credit from the WorldBank, and comprises the rehabilita-tion of the damaged 110/220 and400 kV transmission network, andrehabilitation of the hydropower sta-tion Rama.

For these works, LI establishesthe technical specifications and bid-ding documents for an internationalcompetitive bidding (ICB). The localpower utilities ElektroprivredaBosne i Hercegovine (EP-BiH),Elektroprivreda Hrvatske ZadjedniceHerceg-Bosne (EP-HZHB) andElektroprivreda Republike Srpske(EP-RS) are being assisted duringthe bidding stage, in bid evaluationand during contract negotiations, aswell as the future constructionsupervision.

The services of LI for eleventransmission lines with differentdesigns cover the following:

• reconstruction and repair of wardamages,

• landmine clearing in the trans-mission routes, the accessroads, and clarification of rightsof way,

• reconstruction of existing tow-ers, and erection of new towers(including foundations),

• removal and replacement ofdamaged conductors includingall components like insulatorstrings and fittings,

• installation of new optical cablesfor the damaged 400 kV trans-mission network, and

• the clearing of tower locations.

When the works will be com-pleted by the end of April 2005, acomprehensive supply of power willbe secured for Bosnia-Hercegovina

and its metropolis Sarajevo, Mostarand Banja Luka as well as the inter-connection with the UCTE Grid.

Joachim Lezim

In spring 2004, DessauerStromversorgung GmbH (DSV)entrusted Lahmeyer International (LI)with the design, engineering, ten-dering and site supervision of the110/15 kV Substation Dessau-Alten.

The scope of services containsamongst others the design for a110 kV air insulated switchgear(AIS), one 15 kV SF6 gas insulatedswitchgear (GIS), double busbartype which will be situated in a sep-arate switchgear building, electricalprotection and control systems,remote control implementation tothe existing SCADA systems and

interconnection to the load controlcentre of the Dessauer Stromver-sorgung (DSV).

The main components of thesubstation are as follows:

• Implementation of four 110 kVtransmission lines

• 110 kV AIS outdoor switchyard,nine bays

• 15 kV SF6 insulated indoorswitchgear, 31 feeders

• 110/15 kV transformers, 2 x 40 MVA

• 110/15 kV transformer, 1 x 31,5 MVA

• Arc-suppression coil• Auxiliary systems• Electrical protection and control

systems• Remote substation control sys-

tem• Switchgear control building

The new installations will beerected and installed on the existingpremises, close to the old outdoorswitchyard.

The project execution will becarried out mainly by the LI office inDresden, Germany. Up to now thefollowing services were performed:

New 110/15 kV Substation Dessau-AltenGERMANY

Model of the new 110/15 kV Substation Dessau-Alten, anticipated to be in service in 2006

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• Conceptual design• Preparation of EU-wide tender

documents• Tender evaluation• Support during tender negotia-

tions

LI has entrusted a local engineer-ing office in Dresden for the civildesign works.

The following services will beperformed by LI during the projectexecution:

• Design approval of contractorsdesign

• Site supervision, including timescheduling and cost controlling

• Supervision of commissioningactivities

• Performing of acceptance tests• Review and approval of the “as-

built” documentation

Special emphasis has to be paidto the co-ordination of the commis-sioning activities. Outages of thepower supply must be avoided

Lahmeyer International (LI) wasassigned by Georgian StateElectrosystem (GSE) in June 2004with the preparation of tender docu-ments for SCADA/EMS systemsand communication installations forthe transmission grid of GSE with500 kV, 220 kV and 110 kV substa-tions as well as the connection ofmetering installations for monitoringof energy exchange between GSEand its partners.

LI will also participate in con-tracting with suppliers, in projectmanagement and controlling, inquality assurance of deliveries, the

supervision of installations andimplementation of the systems aswell as the acceptance tests. Thetender documents will be complet-ed after reviewing and adaptation ofthe preliminary design studies.

The project serves in continuationof the commercialisation of GSE with-in the framework of an extensivereform programme of Georgia’s ener-gy sector. The objective is the unbun-dling of generation, transmission anddistribution in order to develop a lib-eralised energy market. Financing isshared by the World Bank and otherinternational organisations.

The network control system willimplement SCADA functions forsupervision and control of 39 sub-stations and power plants as well asenergy management functions andnetwork application modules.

In addition to new radio linksand new own fibre optic cable links,existing transmission capacities onfibre optic systems of otherproviders will also be used for com-munication.

Walter Buckow, Dr. Siegmar Leutloff

SCADA/EMS and Communication Systems for High-voltage Transmission Grid

GEORGIA

Lahmeyer International togetherwith the Iranian engineering compa-ny Moshanir was assigned to devel-op a technical and a financial feasi-bility study for 30 MW wind parklocated next to Manjil in theprovince of Gilan. The Japanesegovernment is supporting this pro-ject with a US Dollar 60 mill. credit.

Manjil is situated about 220 kmnorth-east of Teheran and 80 kmsouth of the Caspian Sea in theprovince of Gilan. The wind condi-tions are characterized by average

wind speeds of about 6 m/sec (at40 m measuring height aboveground) in winter and by superbwind conditions especially in sum-mer. The strong north-wind in themonths from May to Septemberwith an average wind speed of 14m/sec (at 40 m above ground) andmore can be explained with thelocal climatic and geographic cir-cumstances. Through the differentdistribution of temperature of theCaspian Sea and the landmassessouth of the Caspian Sea, a forma-tion of sea breeze especially in

30 MW Wind Park in ManjilIRAN

those months which have powerfulsolar radiation is observed. The longdrawn-out valley in north-southdirection and the sudden contrac-tion near the city Manjil, additionallyleads to a jet-effect with exception-ally high wind speeds.

During the last years, two windparks were constructed in Manjilwhich presently will be extended.Already in 1995 a 10.1 MW parkwith 300 kW and 500 kW turbineswas installed with support of theGlobal Environment Facility (GEF). In

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under all circumstances during theswitch-over and interconnectionactivities from the existing switch-yard to the new switchyard. Thistask requires a close and duly co-ordination of all parties concerned,since the Substation Dessau-Altenis the central grid station betweenDessau city and the nation-widepower supplier.

Klaus-Uwe Huhnke

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In the Republic of Korea arenewable energy law similar to theone implemented in Germany wasenacted in 2004. The goal was setto increase the renewable energyshare in primary energy consump-tion to 5 % by 2011, which requiresan expansion of the renewableenergy generating capacity by 20 %per year. This will be achieved main-ly through the utilisation of photo-voltaic (PV), wind and biomassenergy systems – technologieswhich are supported by the law.

In Korea, at the moment, photo-voltaic systems with a total powerof 2 MW are installed each year.Thus the market is small comparedto Germany, where about 250 MWof PV systems are installed everyyear. Nevertheless, it is expectedthat due to favourable feed-in tariffsfor photovoltaic generated electrici-ty, set by the Korean RenewableEnergy Law and other financial ben-efits, the volume of PV systeminstallations per year will rapidlyincrease in Korea to about 40 MWby 2006.

In October 2004 the Koreancompany Dongbu contracted withLahmeyer International for advisoryservices with regard to their photo-voltaic systems business develop-ment in Korea. Dongbu is a largeKorean Group with business activi-ties primarily in manufacturing andchemical production. LahmeyerInternational conducted a study forDongbu of the European PV market

as well as of European PV compa-nies. Lahmeyer International furtherfacilitated contacts to possible busi-ness partners for the Dongbu Group.

In Germany the RenewableEnergy Law has significantly stimu-lated the PV market volume, whichgrew over the last few years at arate of 30-40 % annually. In thisstrongly expanding market sectorprices are decreasing by more than5 % per year, and various newcompanies have been establishedsuccessfully with different strategies:There are highly vertically integratedcompanies with manufacturingactivities at almost every step of thevalue chain from silicon productionto the complete installation of a PVplant. Other companies are spe-cialised, e.g. in the production of

solar cells or in system integration.Both strategies have permitted highgrowth rates in relation to the worldmarket, which currently has a vol-ume of Euro six billion.

After intensive co-operation,successful meetings and a studytour of projects and manufacturers,our Korean client has the chance todecide on the attractive options forco-operation with several EuropeanPV industry companies.

Furthermore, the delegationfrom Dongbu acquired informationrelevant and helpful for their busi-ness planning, strategy develop-ment and joint ventures.

Werner Klaus

Dr. Jeong, Dr. Yeo and representatives of RWE Schott Solar in Alzenau, Germany

an additional wind park near thereservoir of Manjil, further turbines ofan Iranian manufacturer wereinstalled.

With the goal to achieve theadded value for industrial parts inthe country itself, the Iran initiatedvarious activities with regard to thewind industry.

Under the umbrella of an Iraniancorporate group a company is

focussed on the production of windenergy plants.

The company has signed a con-tract with the international marketleader regarding technical co-opera-tion and technology transfer with abudget of Euro 25 mill. In close co-operation of the partners, a 660 kWwind energy plant will be produced.

Bert Hagenkort

Factory for the production of wind energyplants in Teheran

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Consulting Services for Business Developmentin the Photovoltaic Industry

KOREA

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Iceland’s largest hydroelectricpower plant with a total capacity of690 MW is currently under con-struction in the north-eastern part ofthe country, built by the nationalIcelandic Power CompanyLandsvirkjun. The generated powerwill be exclusively used for alumini-um production for which a new alu-minium smelting factory is concur-rently under construction in thenearby seaport, Reyđarfjörđur.

The future Hálslón reservoir, witha capacity of 2100 million m3, willbe created by a 193 m-high con-crete-faced rockfill dam supportedby two saddle dams. From thepower intake the water will be trans-ferred via a 40 km-long headracetunnel to two 415 m-high steel-linedpressure shafts feeding six Francisturbines with a capacity of 115 MWeach. The electro-mechanical instal-lations will be accommodated intwo caverns, which are accessiblevia a tunnel approx. 1 km long. Thegenerated electric power will betransmitted via a cable tunnelapprox. 1 km long to an open-airsub-station, from where it is trans-ferred to the final consumer by anew high-voltage overhead trans-mission line, also currently underconstruction. After passing the tur-bines the water will be dischargedinto the Jökulsá i Fljótsdal River viaa tailrace tunnel approx. 1.3 kmlong and an open-air channel.

In August 2003 the contract forconstruction supervision on behalfof the Owner for lot KAR-15 wasawarded to the joint venture withLahmeyer International as leadingfirm, in co-operation with theIcelandic partners Hönnun,Almenna, VSO and Rafhönnun. LotKAR-15 powerhouse area compris-es all structures from the top of thepressure shafts to the water dis-charge into the river. TheContractor, Fosskraft, which is ajoint venture of Germany’s Hochtief,as sponsor, and three Icelandicpartners, is carrying out the con-struction works.

The physical conditions prevail-ing in this area, only about 300 kmto the south of the Arctic Circle,demand immense efforts and untir-ing engagement from the peopleinvolved. The equipment is subjectto considerable wear and tear.Regardless of partly adverse weath-er conditions, the progress of worksachieved up to now in lot KAR-15 isenormous. Underground workscommenced in October 2003 with

the access tunnels to the caverns.All excavation works for the under-ground structures, with the excep-tion of the raise bored pressureshafts, are being carried out by theDrill & Blast Method. All excavationworks will be completed byDecember 2004. Works at certainsections are currently six to eightmonths ahead of schedule.

The excellent progress achievedcan be attributed to the high por-tion and standard of mechanisedwork and to the fact that, to themaximum extent possible, variousphases of the work were carried outin parallel. Spray robots, providedwith multiple booms, were used forapplying shotcrete, generally rein-forced with steel fibres. The excava-tion of the two 415 m-long pressureshafts was carried out by a RaiseBoring Machine and was completedin five months, i.e. in two and a halfmonths per shaft.

The first electric power genera-tion is scheduled for April 2007. Theuse of these hydropower resourcesfor the production of aluminium isconsidered a valuable contributionto Iceland’s economic developmentand the improvement of its infra-structure.

Rolf-Günter Köhn,Gunnar Gudmundsson

ICELAND

690 MW Kárahnjúkar Hydroelectric Power Plant

Status of powerhouse hall in September 2004

Raise Boring Machine for pressure shaft excavation

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On 10th July 2004 celebrationstook place at great expense and inthe presence of the State Presidentof Burkina Faso to mark the mostsignificant phase of the Ziga Project:For the first time water from theZiga reservoir was available in thecapital.

A glance at the history of thisproject shows why this symbolicevent was met with so much enthu-siasm by the local media and thepopulation.

In 1984 Lahmeyer International(LI) carried out the first studies forwater supply for Ouagadougoufinanced by Kreditanstalt für Wieder-aufbau. Nevertheless, LI could exe-cute the final design of the main lotbetween 1994 and 1996 and projectimplementation began in 1998.

The main cause of the delaywas the funding at that time of 107billion CFA Francs (163 million Euro)by 12 different international devel-opment banks with various credit

conditions. ln Burkina Faso this isstill a record amount for a project.

The water deficiency in the capi-tal is chronic, with recurring emer-gencies at the end of each dry sea-son. There has been no importantimprovement in the water supplysystem concerning water quantitiesover the last 20 years, which makesthe urgency of the situation particu-larly clear.

On the day of the celebration,10,000 people gathered at the mainpump station. This area wasreserved for invited guests and wasdecked out with a large fountain,stands and tents.

The ceremony was celebratedwith music, traditional and moderndance performances, speeches and

awards to firms who had con-tributed to the success of the proj-ect, some of which – including LI –are still involved.

The highlight of the celebrationswas the opening by State PresidentBlaise Compaoré of the shut-offvalve of the distribution line, causinga 10-metre-high fountain.

The water from the Ziga reser-voir is still not available to the major-ity of the consumers. It will take afurther two to three years before allthe planned new pump stations,water towers, distribution pipes andhouse connections have been built.LI is responsible for site supervisionand technical assistance on theproject and will be involved in theregion for some time to come.

Harald Hechler

BURKINA FASO

Celebration on the Occasion of „Availability of Water from theZiga Reservoir“ in Ouagadougou

Everybody is happy about the water from the Ziga reservoir

Technical Data of the Ziga Project

Catchment area of the Ziga dam 20,800 km2

Storage capacity 200 million m3

Flood relief 2,400 m3/sDistribution pipeline DN 1000 43 km lengthWater treatment plant and pumping station 4 500 m3/hWater towers 8 x 2000 m3

Main distribution network 54 km DN 300 to DN 900 Distribution network 103 km DN 100 to DN 300New house connections 50,000 Estimated project costs 2004 230 million Euro

State President BlaiseCompaoré, at the

opening of the Zigadistribution line

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The pumped storage plantWaldeck I, owned by E.ON Wasser-kraft GmbH, has been operationalsince 1932 and is situated down-stream of the Edertal dam on theEder river near Kassel, Germany.The four conventional generatingsets, with a head of 297 m and atotal installed capacity of 140 MW,are out-of-date and, after 70 yearsof continuous operation, in need ofsubstantial repair or even replace-ment. At present it is anticipatedthat a new shaft-type powerhouse,equipped with a single 70 MWpump turbine unit, will be added tothe existing structure. Furthermoretwo of the old turbines of the con-ventional sets are to be refurbishedto provide short-term reservecapacity.

As basis for the investment deci-sion of E.ON Wasserkraft GmbH,Lahmeyer International executed thepreliminary design between Mayand August 2004 for a new shaftpowerhouse with 70 MW, alterna-tively 50 and 90 MW installed capac-ity as well as for the necessaryrehabilitation works at the upperreservoir and on the old turbines.

The location for the new shaftpowerhouse was chosen adjacentto the existing powerhouse. As aconsequence of a straight extensionand connection to the existing pen-stocks, this location leads to min-imised hydraulic losses, allows - asa result of a perpendicular arrange-

ment of the new pressure tunneland the draft tube/shaft - for a com-pact and thus cost-effective layoutof the shaft powerhouse, has anumber of operational advantagesresulting from the unchangedaccessibility of the existing struc-tures, and provides enhanced flexi-bility in the arrangement of the drafttube/shaft and the outlet structure.

The shaft powerhouse has adiameter of 17 m and a depth of35 m to provide the required suc-tion head for the new 70 MW pumpturbine of –25 m. In addition, majorparts of the existing switchyard, thelower reservoir and - after a neces-sary rehabilitation - also the upperreservoir continue to be used for the new pumped storage plantWaldeck I.

The design provided contains atechnically sound and excellentlyexecutable concept, which makesbest use of the existing componentsso as to contribute to an economicimplementation. Provided that aprompt decision for construction ismade, it may be possible to com-mence the new plant’s commercialoperation in spring 2009.

Dr. Volker Spork

GERMANY

Preliminary Design for the New Pumped Storage Plant Waldeck I

Powerhouse and penstocks of the existing pumped storage plant Waldeck I

Powerhouse withelectro-mechanicalequipment from 1932

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The Mujib Dam built for irrigationpurposes is located some 100 kmsouth of Amman on Wadi Mujib.The owner is the Jordan ValleyAuthority. The maximum height ofthe dam is 67 m and the crestlength is 764 m – of which the cen-tral 466 m are made of roller com-pacted concrete (RCC). The floodrelease is effected by an ungatedspillway across the RCC dam.Construction started in January1999 and was completed inDecember 2003. The inaugurationby King Abdullah II took place onEaster, April 12, 2004.

The construction contracts hadalready been signed when LahmeyerInternational came into the project.After reviewing the tender designsome design changes were intro-duced. These included:

• change of RCC with high to onewith low cementitious content,

• omitting the concrete slab in thestilling basin, i.e. rock excavationonly,

• introduction of clay core rockfilldams at both abutments inorder to bridge a weak and softmudstone layer surfacing abovethe valley floor,

• curving the dam axis at the leftabutment in order to improvefoundation conditions.

A total of 660,590 m3 RCC andeach 26,000 m3 facing mix andbedding mix were placed. For therockfill dams 1.3 mil. m3 were used.The possible maximum flood (PMF)is 5840 m3/s and results in a specif-ic discharge of 19.5 m3/s/m overthe dam.

The design adjustments werecaused by the geological and geo-

technical site conditions which wereonly revealed in detail after the con-struction started. It was alsorequired to optimise the RCC mixdesign to take account of the avail-able aggregates, the climatic condi-tions and the load conditions to beapplied.

Because of the ongoing con-struction contract the design adjust-ments had to be done underextreme time pressure. Everyoneworking in the construction field canimagine that such a situation resultsin some contractual difficulties.

The trivial insight that adequategeotechnical and material investiga-tions are imperative for the success-ful execution of a dam project wasonce again confirmed.

Bernhard Stabel

JORDAN

Mujib Dam

Mujib Dam with full reservoir

Mujib Dam with partial impounding

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MOZAMBIQUE

Strategic Sanitation Plans for Seven Municipalities

Lahmeyer International, in cooper-ation with German and local partners,prepared Strategic Sanitation Planscovering storm water drainage, waste-water and waste management andinstitutional development for themunicipalities of Maputo, Matola,Beira, Dondo, Nampula, Pemba andQuelimane in Mozambique.

Since the end of the civil war in1991 strong efforts have beenmobilised to rehabilitate urban infra-structure at a minimal level. The devel-opment policies of the Governmenthave concentrated since the end ofthe nineties on the elaboration ofmedium and long-term perspectivesfor the efficient upgrading of infrastruc-ture and the improvement of servicequality considering the extremely limit-ed financial and human resources.

The Project is part of the FirstNational Water Development Project(1998-2003), implemented by theGovernment with support of the WorldBank and other bi and multilateralpartners. During the first years of theProject, activities concentrated onwater resources management andimprovements to the water supply. InOctober 2002 the National Directorateof Water, Ministry of Public Works andHousing, commissioned a JointVenture of German consulting firmswith Lahmeyer International as leadfirm, to establish the complex anddemanding master planning.

The Strategic Sanitation Plans for the most important cities ofMozambique, with a present popula-tion of more than 3 million, approxi-mately 50 % of the urban populationof the country in 2003, consider aplanning horizon of 15 years up to2017 and cover the following infra-structure sectors:

• Storm water drainage• Wastewater management and

excreta disposal • Collection and disposal of munici-

pal waste• Disposal of hazardous and health

care wastes

The work programme was imple-mented in three project phases andcomprised the following main compo-nents:

• Data collection and situationanalysis of all sectors in all munic-ipalities, considering existing plan-ning documents and ongoingprojects e.g. for water supply

• Analysis of urban developmentplans, present and planned landuse, population projections

• Immediate measures• Socio-economic assessments• Discussion of development con-

cepts / options, comparison ofalternatives, preliminary designsfor all main components as partof feasibility studies

• Assessment of the potentials forservice improvements and reor-ganisation of the responsiblemunicipal departments, optionsfor private sector participation

• Cost estimates and budget plan-ning for the implementation phas-es of 2, 5 and 8 years

• Financial analyses, options forcost recovery and tariff systems

Personnel of the NationalDirectorate of Water was continuous-ly and intensively involved in the plan-ning process. The municipalities wererepresented by multi-disciplinaryworking groups chaired by the may-ors.

For the planning horizon theStrategic Sanitation Plans defined,structured and estimated costs formore than 200 subsequent projects(around 80 planning and general sup-port projects and approx. 120 reha-bilitation and expansion projects),which are summarised in sectorbudget plans for each municipality.

The implementation costs areestimated at more than USD 250million; preference was given only tothe most cost effective solutions. Forstorm water drainage cost estimatescover the primary system compo-nents. In 2 municipalities seweragesystems shall be rehabilitated andextended to a total capacity of500,000 population equivalents.

After completion of the servicesin August 2004 the Client is to pre-pare the implementation of Phase 1and 2, with a duration of 2 and 5years, respectively.

Rolf Koch

Preliminary design of the main components of the proposed sewerage in the centre of Maputo

Preliminary design for the rehabilitation and expan-sion of storm water drainage in the centre ofNampula

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At the fourth cataract of the NileRiver during the next seven yearsthe Merowe Dam is under construc-tion. This is considered to be a keyproject for the economical andsocial development of North Sudan.

Since 2000 LahmeyerInternational (LI) is commissioned bythe Merowe Dam Project Implemen-tation Unit (MDPIU) of the Ministry ofIrrigation and Water Resources,Khartoum, to carry out extensivesurveying works within the frame ofthe Merowe Dam Project. By mid2003 LI was instructed to carry outthe basic surveying for the planningand the construction execution ofthe project.

The basic surveying comprisesthe installation of a long-range con-trol network and the bathymetricsurvey of the Nile River. The newcontrol point network was sup-posed to provide a planimetric andaltimetric accuracy at centimetrelevel which was in view of the localcircumstances a very challengingstipulation.

Consisting of 200 new controlpoints the network stretches fromAbu Hamed downstream toDongola over a length of 600 kmalong the river Nile. Pillars made ofconcrete with a 3-D-Mark on topwere especially produced for themarking of the control points. Dueto the high demand in accuracy dif-ferent surveying methods wereapplied for the determination of thecoordinates: The static DGPSmethod for the determination of theplanimetric coordinates and preciselevelling for the determination of theelevations.

During the 42 days of the DGPScampaign 1.3 GB of raw data weregained for the calculation of 1044baselines. The precise levelling wascarried out by means of digital level-ling instruments. In inhospitable ter-rain with temperatures of almost50° Celsius a distance of approx.2000 km had to be covered bywalking.

The evaluation of the surveyingdata showed that the demandedaccuracy was not only kept buteven exceeded. With the completedcontrol network the Merowe DamProject dispose of a very homoge-nous, precise and permanentmarked surveying network whichsuites in all respects for the futuredemands and tasks.

The bathymetric survey of theriver Nile totally consisted of 312cross sections at intervals of about2 km. The average length of onesection amounts to approx. 1 km. Inthe future reservoir area the sectionwidth ranges between 2 and 10 km.Three different methods wereapplied for the cross section sur-veys. With GPS supported echosounding measurements the depthsof the riverbed were defined, RTKGPS observations provided data forislands and riverbanks and in addi-tion an existing terrain model wasused for the reservoir area.

The field work was a challengefor team and equipment due to themany cataracts and the numerousoutcropping and hidden rocks with-in the Nile itself and required anextraordinary logistical effort. Themeasurements were carried outduring the flooding season in order

to survey the fourth cataract at thehighest water level. But even thenmany passages could only be navi-gated with great difficulties.

In contrast to this the riverbankswere surveyed during the low waterseason in order to obtain an overlapbetween echo sounding measure-ments and RTK GPS measure-ments.

With the completion of the rawdata processing and production ofcross and longitudinal sections,detailed and comprehensive infor-mation about the Nile River topog-raphy between Abu Hamed andDongola is now available for the firsttime.

Leonhard Weimper

Basic Surveying for Merowe Dam ProjectSUDAN

GPS measurement in one of the 200 new controlpoints

Overcoming thefourth cataract

Location of project area

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To improve the European trans-portation corridors, the railway corri-dor Vc running north-south throughCroatian territory will be rehabilitatedand modernized.

The line sections in questionwere originally developed for a max-imum speed of 160 km/h. The lineextends southwards over some123 km from northeast of BeliManastir through Osijek andSlavonski Samac to Metkovic andthe port of Ploce on the AdriaticCoast.

The total cost for the modern-ization of the railway infrastructurefacilities will be Euro 96.62 million. A portion of the costs are beingfinanced by a loan of Euro 40 millionfrom the European Investment Bankto the Republic of Croatia. On July26th 2002, Lahmeyer International(LI) has been commissioned asConsultant together with Germanand Croatian partners by theCroatian Railways for track works,station buildings, tunnels, bridgesas well as signaling, telecommuni-cations and catenary.

The main services to be provid-ed by LI and its partners cover thereview of existing preliminary anddetailed designs, assistance in com-piling the relevant tender documentsand in the tender evaluationprocess, the construction supervi-sion and issue of reports.

The construction works includethe line overhaul and diversion of apart of the line, reconstruction orrefurbishment of bridges, tunnelsand stations. For electrical works,power and telecommunications:

• Reconstruction of electric powersupply facilities,

• electrification of the line fromBeli Manastir to Strizivojna/Vrpolje,

• new catenary on the sectionsStrizivojna/Vrpolje – SlavonskiSamac and Metkovic – Ploce,

• the reconstruction or improve-ments to the low voltage net-work for stations incl. lighting,

• the installation of Auto-Stopequipments, securing of levelcrossings to improve trafficsafety,

• installation of Railway AutomaticTelephone network andexchange,

• installation of fibre optic cablesalong the whole length of theline,

• the establishment of a remotecontrol of train traffic system andthe installation of GSM-R andUHF networks in the main sta-tions.

The project started in June2002. Construction works in thesouthern section were completed inJune 2004. Start of constructionworks in the northern section arescheduled for the middle of 2005.Completion of the project is sched-uled for the end of 2006.

Dieter Krüger

CROATIA

Modernization of Railway Corridor Vc

Chart showing the CroatianRailway Networks with Corridor

Vc from the Hungarian borderto the border of Bosnia and

Hercegovina; from the border ofBosnia and Hercegovina to the

Adriatic Coast

The Stavros Depot is located atthe end of Metro Line 3, in thedirection of Athens InternationalAirport. The Depot had to be com-pleted before the Olympic Games inAthens in 2004 to improve efficiencyof the public transport systembetween the airport and the city. In2002, Lahmeyer International wasawarded the detailed final structuraland electro-mechanical design byThemeliodomi S.A.

GREECE

Stavros Depot of Athens Metro

Stavros Depot during construction

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The Stavros Depot has an areaof 27.000 m2 and is for the mainte-nance and repair of the rolling stockof Line 3. Furthermore, the futurerapid rail connection to AthensInternational Airport will be linkedwith the Metro at Stavros.

The metro maintenance buildingis 130 m by 90 m wide having 13tracks. The roof of the building willalso serve as the ground floor foran 8-storey high car park which willaccommodate some 2,400 cars.The car park will have direct accessto the Attiki Odos highway and thenearby bus transfer station.

The track level of Stavros islocated some 8 m below groundlevel, supported by retaining wallsup to 12 m high, and about 800 mlong. The retaining walls are partlyconstructed as twin walls, with anaccess ramp in between. At the farend, there is a cut-and-cover tunnelwhich widens like a trumpet for theentry of the trains into the depot.

An underground rainwater catchbasin, capacity of 4,500 m3, wasplanned as a temporary buffer incase of heavy rainfall. To gain time,this basin was built after the depotbuilding. Due to restricted space a

top-down method to constructionwas used. Diaphragm walls wereused as perimeter walls and boredpiles as columns. The roof slab waspoured directly on the ground, andthe excavation was through anopen area in one corner of the roofslab.

Dr. Gertraud Lappas

Caracas, the capital of Venezu-ela, has a population of over 4.5million, and is the economic centreof the country. The explosive growthof the population is attributed tomigration of the rural populationfrom the poorer areas to the city.

This rural exodus requires thatthe infrastructure of the city and theregion has to be continuously devel-oped. To date there is still a lack ofan efficient public transport systemin the region.

Because of the difference in alti-tude, the climate in the suburb ofLos Teques is milder than that inCaracas, which is why people preferto live in Los Teques and commuteto their work in Caracas.

The only direct link is the"Panamericana", which is one of themost used roads in Venezuela. Withthe construction of the Metro LosTeques, the daily congestion of thislink road will be avoided or at leastreduced.

The Metro Los Teques is 9.5 kmlong and runs through a topographi-cally difficult area in the narrow,winding Rio San Pedro valley, whichis also characterized by highly ero-sive surface conditions. Several rivertraining measures were necessaryto protect respective valley sectionswhere heavy landslides can occur inthe rainy season.

The Metro climbs the mountain-ous track in less than ten minutes ata speed of 80 km/h. At the terminalstation the track of the Metro LosTeques will be connected to theLine 2 of Metro Caracas, which runsinto the centre of the city ofCaracas.

In 2003, Lahmeyer Internationalformed a consortium with a localpartner and another internationalconsulting firm to perform studies toestablish the design criteria andspecify in broad terms the rollingstock, the power supply and the

tunnel ventilation system, giving pri-ority to the operational safety andsecurity. One critical aspect was thecompatibility of the existing infra-structure with Metro Caracas.

In the next project phase thesestudies will be the basis for the ten-der documents and for tendering ofall electro-mechanical equipment forMetro Los Teques.

Max Läuchli

VENEZUELA

Metro Los Teques

Terminal Los Teques during construction

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The Athens Metro has been inoperation since 2000 and is contin-uously being extended. Transfer sta-tions are necessary to allow pas-sengers to change from private car,bus or tram to the Metro.

The first of these transfer sta-tions "Sygrou - Fix" is located closeto the centre of Athens betweentwo busy roads. Construction wascompleted before the OlympicGames in August 2004, allowingtraffic diversions to be removed. In2002 the Greek contractor AEGEK-EKTER-METON awarded LahmeyerInternational the design works forthe excavation support and the finalstructural, architectural and electro-mechanical works.

The station comprises an under-ground car park with 6 parking lev-els. Shops occupy part of the firstparking level. On the ground levelthere is a bus stop with space for 4articulated busses. An external cor-ridor for pedestrians from level -1 tolevel -2 allows direct access to theMetro Station. A tram stop is locat-ed on the opposite side of one ofthe roads.

The car park accomodates 650cars having an area of 5100 m3 anda volume of 110,000 m3. A 5-storeybuilding is planned to be built ontop of the car park.

Initially, Lahmeyer Internationalsuggested the Top-Down Method,to minimize interference with theneighbouring Metro station and tun-nel. However, for reasons of con-struction time and to protect possi-ble archeological findings, the cutand cover method was decidedupon, using reinforced concretepiles with ground anchors.

During excavation, one side ofthe Metro station was completelyexposed, which resulted in unsym-metrical loads due to soil and waterpressure from only one side.Therefore, re-calculations of the sta-bility of the Metro station were nec-essary.

Detailed calculation of the upliftpressure showed that before con-struction of the planned 5-storey

building, the safety against upliftwas insufficient. Permanent soilanchors were not permitted to beused. The thickness of the slabs intwo thirds of the area was increasedfrom 0.30 m to 0.42 m to improvestability of the structure. The rein-forced concrete piles of the retain-ing wall of the excavation pit wereintegrated into the structure asadditional weight, where possible.This was achieved by constructingcorbels on the external walls belowthe cap beams, which connect thepiles.

The main part of the statical cal-culation was done using a three-dimensional finite element model.This model comprised beam andcolumn elements, which are com-bined with plane elements repre-senting slabs, walls and ramps. Thefoundation slabs and the externalwalls were assumed to be elasticallybedded on the surrounding soil.

The following load cases wereconsidered in the analysis:

• Dead loads of the car park andof the 5-storey building

• Earth pressure due to dead andlive loads from each side (effec-tive after failure of the anchors)

• Water pressure, inclusive uplift• Live loads inside and on top of

the car park• Live loads of 5-storey building• Earthquake earth pressure• Earthquake loads of the under-

ground structure and of the 5-storey building

A non-linear analysis was carriedout. For all possible load combina-tions (before and after failure of theground anchors, maximum or mini-mum ground water level, with orwithout earthquake) the requiredreinforcement for each structuralmember was calculated separately.Envelopes of the required reinforce-ment were used for detailed engi-neering drawings.

Dr. Gertraud Lappas

GREECE

SYGROU - FIX Transfer Station in Athens

The transfer station Sygrou-Fix is located close to the centre of Athens between two busy roads.

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Modernization of the Auxiliary Klingenberg Dam

The Klingenberg dam in theWilder Weisseritz Valley was con-structed in the years 1908–1914according to plans prepared by theRoyal Hydraulic EngineeringAdministration of Saxony, to secureflood protection and also improvemanagement of low water flows inthe lower reaches as well as thedrinking water supply for Dresden.

The auxiliary dam at the root ofthe Klingenberg dam was commis-sioned in 1954 in order to improvethe water quality. The auxiliary damwas badly damaged by theextremely high floods of August2002 and has been provisionallyrepaired in the meantime.

In order to carry out the plannedfull-scale reconstruction of the maindam, the reservoir must be com-pletely emptied. During this time therelease of raw water will be fromthe auxiliary dam reservoir, whichwill be enlarged.

The Dams Administration of theFree State of Saxony commissionedHydroprojekt in December 2003 tomodernize the auxiliary dam includ-ing the construction of a replace-ment inflow gauging station.

The modernization measures willinclude the construction of a homo-geneous dam on the same sitewhich will be 4 metres higher thanthe existing one. This will increasethe operating volume from 70,000to 240,000 m3. The new dam con-

struction will have a height ofapprox. 12 metres and the length ofits crest will be around 144 metres.The dam volume will be approx.25,000 m3.

The spillway – because of itsground plan named duck’s bill – hasa height of 10 metres. The fixedspillway edge is a good 45 metreslong. In addition, a vertical slidegate (4 x 2) for controlling the floodprotection capacity will be fitted onthe front face. During normal opera-tion the gate is open. It will beclosed when necessary to preventthe body of raw water in the main

dam being affected by the inflow ofdisturbed sediment. Two bottomoutlets, each with a nominal diame-ter of DN 800, will be integrated intothe front face of the flood relief spill-way.

Additionally, to improve thewater quality and management, thecross-connection to the auxiliarydam will be converted into a lowoverfall, the inlet section and thedownward gradient step at the oldBeerwalde gauging station will beconverted river bottom slide and anoil barrier also installed. Further, theBeerwalde gauging station will be

GERMANY

The existing auxiliary Klingenberg dam and flood relief spillway

The proposed site of the new gauging station for themeasuring of water levels and water quality parameters

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The Municipal Council of theCity of Gießen intends to bringtogether all its Municipal employees,who are currently based in differentbuildings spread over the city, underone roof, in the new development ofthe Berliner Platz (Berlin place), inthe centre of the city. The existingbuilding ensemble currently accom-modates 200 employees and apolice station. These buildings areno longer suitable to provide up todate, both, community and localgovernment services.

The site will be big enough toaccommodate the Municipality aswell as commercial and/or privatedevelopments.

To find a company or group ofcompanies that will develop an inte-grated concept for both, the munici-pal administration and the commer-cial sector remains one of the lead-ing goals.

The total project is split into thefollowing sub-projects:

• Architectural competition,• Master plan development,• Removal of the present users• Demolition and soil remediation,• Tendering and investors' com-

petition,• Design and construction,• Procurement of architects /

consultants.

Due to the complexity, a toughco-ordination of the various sub-projects is required to manage andmonitor the project successfully.

Further tasks to be achieved:

• Definition of project tasks,• Establishment of an internet

based communication,• Project manual including project

specifications, job description,documentation structure,

• Scrutinising architectural andengineering design.

In respect to the various sub-projects, involved parties and inter-faces, the establishment of a soundproject structure and project organi-sation is the key factor for a suc-cessful execution of the project.

The technical project manage-ment is carried out by LahmeyerRhein-Main, while the legal projectmanagement by the law firm FPS,Fritze Paul Seelig, Frankfurt a.M.,Germany.

The reason for establishing a

Public Private Partnership (PPP)model is not limited to find the bestinnovations comprising design, con-struction, operation and mainte-nance, but also to find the bestfinancial investments for the project.

The current running architecturalcompetition will close at the end ofJanuary 2005. The purpose of thiscompetition is to identify the bestconcept regarding design, invest-ment costs and operating costs andto select an architect to carry outthe detailed planning work.

All the design proposals submit-ted for the competition will beexhibited for a period of 3 weeks.

We look forward to the selecteddesign which will henceforth beintensified in the following stages.

Thomas BörnerLahmeyer Rhein-Main

GERMANY

New Development of the ‘Berliner Platz’ in the City of Gießen

Berliner Platz

renaturized, the replacement inflowgauging station constructed, a float-sam barrier erected and improve-ment of forest roads carried out.

The existing inlet gauging stationwill be filled in the future and there-fore no longer usable.

For the management of the damit is important that low and mean

flows are measured with a highdegree of accuracy. In the same way,flood discharges up to 50 m3/s areto be recorded. As with the existinggauging station, besides water lev-els, water quality parameters will bemeasured also in the future.

Parallel recording of measuringdata of the new and old levels willbe necessary for at least one year in

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order to take into account the dis-placement at the site.

The planning documents for thenew gauging station are presently inthe hands of the authorities forapproval. Construction is expectedto begin in early 2005.

Jörg JahnHydroprojekt

Ingenieurgesellschaft mbH

Lahmeyer International GmbHFriedberger Str. 17361118 Bad VilbelGermany

Tel.: +49 (61 01) 55-0Fax: +49 (61 01) 55-22 22E-Mail: info@lahmeyer.deInternet: www.lahmeyer.de