E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

• Founded in 1962 and working in Angola since the 60’s

• With 400 employees in COBA Group, COBA is the largest company of consulting engineers in Portugal

• Dam design was COBA’s first main field of activity

• Presently, COBA’s activity covers most of the fields associated with engineering activities and technical assistance

during construction of large projects, namely:

• DAMS AND HYDROPOWER PLANTS

• WATER SUPPLY SYSTEMS AND WATER AND WASTEWATER TREATMENT PLANTS

• IRRIGATION AND DRAINAGE SYSTEMS

• ROADS, MOTORWAYS, RAILWAYS AND AIRPORTS

• BRIDGES, VIADUCTS AND TUNNELS

• ENVIRONMENTAL STUDIES

• CARTOGRAPHY AND GIS

HISTORY

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

BASIC STUDIES

HydrologyGeology and geotechnicsSeismologyDemographyThematic cartography and GISDigital cartographyPedologyRegional and urban planningWater resources planning

FEASIBILITY STUDIES

Technical and economic analysesAnalysis of alternative solutionsHealth and safety plans

DESIGN

MasterplanningPreliminary Study, Preliminary Design, Detailed DesignEnvironmental and Social Impact AssessmentDesign Review/Checking

TECHNICAL ASSISTANCE TO CONSTRUCTION

PROJECT MANAGEMENT AND CONSTRUCTION

SUPERVISION

PROJECT MONITORING AND INSPECTION AND

SAFETY ANALYSIS

WORKS REHABILITATION

FIELDS OF ACTIVITY

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

In the development of its activity, COBA founded or acquired as major shareholder other companies that, although with autonomous management, support and collaborate with COBA

whenever necessary. This situation led to the formation of COBA Group, which includes offices in Portugal, Brazil, Angola, Algeria, Mozambique and the United Arab Emirates. A close

cooperation between COBA and its associated companies ensures an accurate and smooth technical, administrative and logistical interaction.

COBA Group

EMIRATES Branch

B R A S I L

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

Founded in 1982, its major shareholder is COBA from 1989. It is a consulting engineering firm in the fields of water supply,collection and treatment of domestic and industrial wastewaters and also building structures and geotechnics.

Founded in 1987 in Oporto, its major shareholder is COBA since 1993. Its main activity is the management, coordination andsupervision of civil engineering works

Founded in 1970 by COBA, it is involved in the trade of instrumentation for the monitoring of works behavior, in the assistance inthe phases of design, installation and operation of monitoring systems and their interpretation.

Founded in 1996 by COBA, SA with the main purpose of meeting with the legal conditions required in the direct contracts ofstudies and projects in the Brazilian market. Its sectors of activity are those of the parent company.

In the natural development of its activity, COBA founded or acquired as major shareholder other companies that, although withautonomous management, support and collaborate with COBA whenever necessary.

Etablished in 2003, with the main purpose of providing engineering services associated with planning, design, quality controland management of road and airport pavements, including the execution of specialised “in situ” and laboratory tests.

Established in 2005, it has the purpose of providing support in engineering and geomatics, development and implementation of information systems and production and control of digital mapping, as well as other subsidiary activities.

Established in Abu Dhabi, United Arab Emirates, with the purpose of providing engineering services and Project Management in the countries within the Persian Gulf Region.

Company that relates to the provision of consultancy services and project within the Geotechnical and Structures. Founded in 1996. It is majority owned by COBA since January 2008.

Established in 1999, and their sectors of activity of the same parent company.

Society of Algerian law founded in 2008. Owned by COBA 100%, provides engineering services in the fields of the parent company.

COBA, SA

ENGICO

EFIEFE

COESA

COBA Brasil

CONSULSTRADA

LANDCOBA

COBA Emirates

TETRAPLANO

COBA Angola

COBA Algérie

Established in 2010, its purpose is the provision of integrated engineering, management and maintenance services in the fieldof hydraulic and agricultural developments.

SKILLTEC

COBA Group

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

PORTUGAL, BULGARIA, GREECE, HUNGARY, IRELAND, MACEDONIA, SPAIN, TURKEY

ALGERIA, ANGOLA, CAPE VERT, EQUATORIAL-GUINEA, GHANA, GUINEA-BISSAU, GUINEA-CONAKRY,MOROCCO, MOZAMBIQUE, NAMIBIA, REPUBLIC OF CONGO, SENEGAL, SWAZILAND, TUNISIA

ARGENTINA, BRAZIL, COSTA RICA, ECUADOR, HAITI, DOMINICAN REPUBLIC, PANAMÁ, PERU, VENEZUELA

CHINA (MACAU), GEÓRGIA, IRAQ, JORDAN, OMAN, UNITED ARAB EMIRATES

COBA WORLDWIDE

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

19,7Millions €

28,1Millions €

30,2Millions €

30,6Millions €

40

30

20

10987654321

1,1Millions €

3,0Millions €

3,3Millions €

3,6Millions €

FINANCIAL INDICATORS

2007 2008 2009 2010

28,1Millions €

1,6Millions €

TurnoverOperational

Results

2011

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

RECENT

HYDROELECTRIC

PROJECTS IN ANGOLA

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

LUACHIMO HYDROPOWER DEVELOPMENT

LUACHIMO HYDROELECTRIC POWER PLANT.

POWER PLANT REHABILITATION & UPGRADE.

Client/Owner: MINEA

Technical and Economical Feasibility Study: 2006/07

Tender Design and Environmental Impact Assessment: 2012/2013

Luachimo Dam and Power Plant are located in the Luachimo River, near to Dundo

village, in Lunda-North Province.

Rehabilitation and upgrade of the power generation capacity implies:

• hydromechanical equipment rehabilitation/upgrade;

• construction of a new water intake, canal and forebay, designed for a flow of

240m3/s;

• construction of a new power plant (power plant II), located next to the existing

plant, equipped with turbine-alternator units with a total capacity of 32 MW.

• construction of a new energy substation.

ANGOLA

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S ANGOLA

GOVE HYDROELECTRIC DEVELOPMENT

Gove Dam Rehabilitation, Construction of a New Hydropower Plant,

Substation, Airport and other facilities.

Client/Owner: GABHIC - Gabinete para Administração da Bacia Hidrográfica do Rio Cunene / MINEA

Project Management and Construction Supervision: 2007/2012

DAM

• Type: Earthfill

• Height: 58 m

• Crest length: 1 112 m

• Reservoir volume: 2500 x 106 m3

HYDROPOWER PLANT

• Installed capacity: 60 MW

• Average annual energy generation: 150 GWh

SUBSTATION

• 24 MVA transformers

• 11/220 kV

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S ANGOLA

GOVE DAM REHABILITATION

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

JAMBA-IA-OMA HYDROELECTRIC DEVELOPMENT

Jamba-Ia-Oma Hydroelectric Development

Client/Owner: GABHIC - Gabinete para Administração da Bacia Hidrográfica do Rio Cunene / MINEA

Preliminary study: 2008 Tender design: 2009/11

The Jamba-Ia-Oma Hydroelectric Development is located in the

Cunene River approximately 50 km downstream from the Gove

Dam.

• Type: Gravity concrete and earthfill

• Height: 47 m

• Crest length: 2 803 m

• Reservoir volume: 1100 x 106 m3

HYDROPOWER PLANT (Cavern)

• Installed capacity: 3 Francis, vertical x 26,3 MW

• Average annual energy generation: 186 GWh

SUBSTATION

• 29 MVA transformers

• 11/220 kV

ANGOLA

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

JAMBA-IA-MINA HYDROELECTRIC DEVELOPMENT

Client/Owner: GABHIC - Gabinete para Administração da Bacia Hidrográfica do Rio Cunene / MINEA

Preliminary Design and Tender Design: 2008 / 2012

The Jamba-Ia-Mina Hydropower Development is located on the upper Cunene, downstream from the confluence with the Cuando River and approximately 160 km to the south of Huambo.

It is located 110 km downstream from the existing Gove Hydropower Development and 60 km upstream from the, also existing, Matala Dam, approximately 60 km downstream from the Jamba-Ia-Oma Hydropower Development.

Dam:

• Type: Concrete and earthfill

• Height: 27,5 m (concrete) and 23 m (earthfill)

• Crest length: 1270 m

• Reservoir volume: 522 x 106 m³

HYDROPOWER PLANT (Cavern):

• Installed capacity: 3x 75,6 MW

• Average annual energy generation: 535 GWh / year

ANGOLA

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

CAMBAMBE 2 HYDROPOWER PLANT

Client/Owner: Empresa Nacional de Electridade (ENE) / MINEA

Design Review and Construction Supervision: 2011 / ongoing

The Cambambe Hydropower Development is located in the Kwanza River, approximately 180 km southwest from the city of Luanda and about 15 km from the city of Dondo. It was initially designed and built for a phased construction.

Phase II of the project is currently ongoing and includes the construction of the Cambambe 2 Power Plant. The Phase II works are divided into two lots: civil construction works (power plant 2) and electrical and mechanical equipment.

Power plant 2 will have an installed capacity of 700 MW. It includes the following main components:

- a new water intake, water conveyance tunnel;- a power plant, the respective units, transformers, substation and ancillary systems:

access tunnel and control building;-A feeder canal and discharge tunnel located downstream.

The works provided by COBA within the scope of this project are as follows:- Project management;- Review of studies, design and tender documents pertaining to the civil construction works and to the electrical and mechanical equipment, as well as the review of the model test results;

- Approval of the design of the civil construction works and of the electrical and mechanical equipment;

- Construction supervision;- Start-up and initial operation; - Assistance during the warranty period.

ANGOLA

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

LARGE SCALE

HYDROELECTRIC

PLANNING

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S PORTUGAL

NATIONAL DAM PROGRAM

Client/Owner: EDP (Portuguese Electricity Company)

Establishment of the program: 2007

COBA lead consultant

• Development plan for large hydroelectric developments in the

country

• Covering years 2007-2020

• Power generation and optimization of water resources

• Strong environmental constraints

• 25 dams involved

• 10 developments identified to be built in order to meet the required

capacity for 2020

• These developments will have a capacity of 1100 MW, generating

1630 GWh/year

• Together with power stregthenings in existing developments, total

capacity in 2020 to achieve >7 000 MW

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

PORTUGUESE HYDROPOWER PLAN

PORTUGAL

HYDROPOWER

CAPACITY (2006/07)

HYDROPOWER

GENERATION BY NEW

SCHEMES

HYDROPOWER

GENERATION TARGETPERIOD

~5000 MW>1100 MW> 7000 MW2010-2020

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

OTHER STUDIES

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

ANGOLAN NATIONAL WATER PLAN

Client/Owner: Ministério de Energia e Águas (MINEA) Instituto Nacional dos Recursos Hídricos (INARH)

Date: 2012 / onging

The Angolan National Water Plan (ANWP) evaluates the current

situation, and diagnosis the major problems and potentialities on a

short, mid and long term basis.

Besides the physical, economic and social characterization of the

water sector, the ANWP is especially focused on:

- Characterization of water resources (surface and groundwater),

concerning quantity and quality;

- Identification and quantification of water uses (urban water supply,

industry, irrigation, hydropower, environment, etc.);

- Execution of the water balance of water availabilities vs. water

demands;

- Identification and characterization, in space and time, of the principal

problems, namely floods, droughts, pollution, etc., as well as current

and potential conflicts that may arise pertaining to water use;

- Definition of a short-term physical and financial programme.

ANGOLA

Location of high potential areas

for irrigation and hydroelectric

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S ANGOLA

WATER SUPPLY AND SANITATION MASTER PLANS FOR 8 MAJOR CITIESHUAMBO, N’DALATANDO, KUITO, ONDJIVA, MALANJE, DUNDO, SAURIMO and MENONGUE

The studies envisaged the execution of water supply and sanitation master plans

for the cities of Huambo, N’Dalatando, Kuito, Ondjiva and Malanje and associated

engineering preliminary designs. These cities have an estimated population

between 100 000 and 600 000 inhabitants, and usually disposed ancient and

rudimentary water supply and sanitation networks.

• i) Preparation of master plans for water supply and sanitation, including short

and long term analysis.

• ii) Evaluation of the sanitary and socio-economic impact of the proposed

schemes, expected benefits and communitarian participation;

• iii) Execution of preliminary engineering studies associated to priority

rehabilitation / expansion works, and preparation of ToR for construction and

detailed design;

• iv) Identification of alternative technologies in light of the available technical,

financial and human resources (operation and maintenance).

Client/Owner: : Direcção Nacional de Águas (D.N.A.). (National Water Directorate)

1st Masterplans: 2001/2007

Masterplans updating:2011/M

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

LUANDA SEWERAGE MASTER PLAN

ANGOLA

Client/Owner: ELISAL – Empresa de Limpeza e Saneamento de Luanda

Masterplan: 2007/2008

The purpose of this study was to update the guidelines established in the Master

Plan developed by COBA in 1995, taking into account the new urban characteristics

of the city, maintaining as principal aim the acquisition of new sewerage and

environmental data, suitable for a city with Luanda’s dimension and projection in a

national and international context.

• Description of the situation of existing infrastructures;

• Definition of a study area compatible with the project horizon year (2025);

• Study of population estimated up to the project horizon year (2025);

• Assessment of the polluting hydraulic loads and study of the receiving

environment;

• Evaluation and mapping regarding different types of sewerage systems;

• Evaluation and location of required wastewater treatment facilities;

• Study of the principal infrastructures that comprise the drainage and stormwater

drainage systems;

• Suggestion of priority action works, including cost estimates and task planning.

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S ANGOLA

“BAÍA DOS TIGRES” ISLAND MASTER PLAN

• Water supply system

• Non potable water supply system

• Waste and industrial waters drainage system

• Electrical power supply and distribution

• Telecommunications

• Solid wastes management

• Approach roads

• Protection against sands

Client/Owner: Ministry of Agriculture, Rural Development and Fisheries

Master Plan

Date: 2004/2007

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

SALTINHO POWER TRANMISSION LINE

Saltinho Power Transmission Line

Client/Owner: UNDP United Nations Development Programme

Tender Design and Tender Documents

Saltinho Hydropower Development.

110 kV SUBSTATION.

Saltinho-Bissau ENERGY TRANSMISSION LINE at 110 kV (152 km)

GUINEA-BISSAU

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S ANGOLA

MARINE SUPPLY BASE IN PORT AMBOIM

• Area: 15 ha

• Supports offshore activities of HMC’s installation vessels in West

Africa (supply of materials and resources)

• Functions included:

• Multi-Joint Fabrication Facility;

• Storage of project related materials;

• General storage of HMC equipment;

• Offices and facilities for (yard) workers.

Client/Owner: HMC – Heerema Marine Contractors Nederland, B.V. / Government of Angola

Licencing Design: Environmental and Social Impact Assessment

Date: 2007/08

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S ANGOLA

NAMIBE PORT

• One of the most important ports of Southern Angola, offering

accommodation for large vessels. Used for goods, minerals and oil

transportation.

• Study focused on the commercial port (total area: 170 000 m2)

• Services included:

• Site survey of infrastructures

• Assessment of the maintenance state of embankments, wharfs,

access roads, water supply networks, sewerage networks,

administrative buildings, silos, etc.

• Inventory of available equipment

• Design of urgent repairing works

Client/Owner: Ministry of Planning

Design of Rehabilitation of Namibe Port

Design

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

PORTUGALCentral/Southern RegionAv. 5 de Outubro, 3231649-011 LISBOATel.: (351) 210 125 000, (351) 217 925 000Fax: (351) 217 970 348 E-mail: coba@coba.ptwww.coba.pt

Av. Marquês de Tomar, 9, 6º.1050-152 LISBOATel.:(351) 217 925 000Fax:(351) 213 537 492

Northern RegionRua Mouzinho de Albuquerque, 744, 1º.4450-203 MATOSINHOSTel:(351) 229 380 421Fax:(351) 229 373 648E-mail: engico@engico.pt

ANGOLA - COBA ANGOLAPraceta Farinha Leitão, edifício nº 27, 27-A - 2º DtoBairro do Maculusso, LUANDATel./Fax: (244) 222 338 513 E-mail: coba-angola@netcabo.co.ao

MOZAMBIQUECentro de Escritórios. Pestana Rovuma Hotel. Rua da Sé nº114, 4º Andar - 401 A, MAPUTOTel.: (258) 21 328 813Fax: (258) 21 016 165Tlm: (258) 820 047 454E-mail: coba.mz@gmail.com

ALGERIA - COBA ALGERIE09, Rue des Frères HocineEl Biar - 16606, ARGELTel.: (213) 21 922 802Fax: (213) 21 922 802E-mail: coba.alger@coba.pt

BRAZIL - COBA, LTDARua Buenos Aires 68, 25°Centro. Rio de Janeiro, RJ - CEP 20.070-022Tel. (55 21) 3553 67 30Tel. (55 21) 8366 00 06E-mail: geral@coba.com.br

FortalezaAv. Senador Virgílio Távora 1701, Sala 403Aldeota - Fortaleza CEP 60170 - 251Tel.: (55 85) 3261 17 38Fax: (55 85) 3261 50 83E-mail: coba1@eisenhower.com.br

U.A.E. – COBA EMIRATESLLJ Business Center, Al Jazeera StadiumP. O. Box 38360 ABU DHABITel.: (971) 2 495 0675 Fax: (971) 2 445 4672

CONTACTS

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

E N G I N E E R I N G A N D E N V I R O N M E N T A L C O N S U L T A N T S

JUNE | 2013