OverPROJECT 65 years shaping pathways BOOK underground SUBWAY PRESENTATION OSSA, founded in 1952, is a leading company in the underground construction sector specializing in four business areas: Construction, Energy, Mining and Services. Both in underground excavations by traditional method (NATM) and in tunneling with TBM, OSSA is a solid underground works partner for important industrial and construction groups internationally. At OSSA we are highly commited to Quality, Health and Safety, and Environment, and we invest in Research and Development Projects at an international level. We promote a culture of respect and teamwork among our team. OSSA has vast recent experience in high speed railway tunnels with over 75 km of high speed rail tunneling projects, leading the Spanish market in this specialty, and also in underground power plants, having built over fifteen underground plants with some of the largest underground caverns in the world. As a recent highlight, we have built more than 10 km of tunnels for the Santiago de Chile Metro. Internationally OSSA has executed works in Hong Kong, Taiwan, Chile, Peru, Colombia, Panama, Costa Rica, Brasil and Guatemala and is recently focusing its tendering activity in North America, Central America, Asia and Great Britain. After 65 years of success, our strategy is to continue expanding internationally, and to support large civil engineering and mining industry clients at all levels, contributing our vast technical expertise and our equipment fleet, while prioritizing health and safety and innovation in all our projects. SAFETY Safety is OSSA’s main asset from the time when its operations began, demanded by the specialisation required for the works carried out underground. The company’s staff have a high degree of professionalism and specialisation, which has been achieved after many years of training and the transfer of know how. Working in confined spaces with the presence of gas, dust, noise, low visibility and the use of explosives means that OSSA’s safety department is the most relevant in the company. The use of cutting-edge, innovative techniques in the field of underground works requires the continuous training of the company’s human resources. Type: Project: CONSTRUCTION DATA SHEET SUBWAY EARTH MOVING AND CIVIL WORKS AT E-15 STATION“CANGALLO", PHASE 1B Owner: Consorcio constructor M2 Lima Minimum width: 28 m. Project photos: Maximum width: 47 m. Section: Start: 06/2021 Depth: 21 m. STATUS GEOMETRY End: 09/2022 Lenght: 130 m. STRUCTURE Metro Station OVERBURDEN N/A METHOD COUNTRY PERÚ Mechanical means. OF TUNNELING GEOLOGY AND PROVINCE LIMA COLLUVIAL GEOTECHNICAL DATA 1 Frontal Loader. PLACE LIMA 2 Excavators. 2 Generators. TUNNEL EQUIPMENT 1 Mobile crane. 1 Roller. BUDGET 1 Telehandler. 5.585.855 € (EXCLUDING VAT) 1 Backhoe. LOCATION Excavation of the station, with a volume of 88,751 m3, and execution of the roof, vestibule and bottom slabs, whose AND concrete volume is 11,555 m3. Excavation executed downwards, first executing the roof slab and then excavating ADITIONAL underneath. Once the level of the vestibule slab is reached, it is anchored to the perimeter walls and finally it is excavated INFORMATION underneath to reach the bottom slab level. Type Project EXCAVATION, SUPPORT AND LINING OF THE TUNNEL BETWEEN SAN JUAN DE DIOS CONSTRUCTION DATA SHEET SUBWAY STATION AND THE PV19 BIS SHAFT IN THE LIMA METRO. PACKAGE 1B.01 Owner: Consorcio Constructor M2 Lima (DRAGADOS-FCC-COSAPI-ANSALDO-IMPREGILO) Project photos Start: 01/2018 Shaft: Excavation 17.7 m STATUS GEOMETRY Line tunnels: 10.26 x 8.0 m y 68 m2 End: 01/2021 Gallery: section measuring 19.3 x 11.53 m and 179 m2 STRUCTURE Subway tunnel OVERBURDEN 20 m METHOD COUNTRY Peru By mechanical means OF TUNNELING GEOLOGY AND PROVINCE Lima Colluvial GEOTECHNICAL DATA 1 Telescopic lifting platform PLACE Lima 1 Shotcrete robot 1 Backhoe TUNNEL EQUIPMENT 1 Front bucket loader 1 Truck (12 m3) 1 Mixed backhoe BUDGET 21,428,939 USD 1 Mixer truck (EXCLUDING VAT) 1 Hydraulic drilling jumbo LOCATION AND The section has a length of 1,312 ml and requires a PV-19 ventilation shaft to be constructed in the centre of the ADDITIONAL section to allow access to the line tunnel being built. The project includes a gallery for 4 No. 301 ml routes. INFORMATION Type Project CIVIL WORKS, SHAFTS, TUNNELS AND STATIONS CONSTRUCTION DATA SHEET SUBWAY OF THE LINE 3, SECTIONS B AND C Owner: Metro de Santiago Project photos Cross section: Tunnel between 64 y 75 m2 Start: 01/2019 Station: 172 m2 STATUS GEOMETRY End: 07/2022 Lenght: Tunnel: 2,223 m Underground station: 120 m Metro tunnels and open cut STRUCTURE OVERBURDEN Between 7 and 14 m between micropile walls METHOD NATM for the underground works. Excavation between COUNTRY Chile OF TUNNELING micropile walls D. 1,200 mm for the open cut station GEOLOGY AND Santiago gravels from the first and second deposits PROVINCE Metropolitan Region GEOTECHNICAL DATA of the Mapocho River PLACE Santiago Excavators Loaders TUNNEL EQUIPMENT Telehandlers BUDGET Shotcrete machines (EXCLUDING VAT) 2,383,936 UF Construction of 2,223 m long tunnel, with a cross section between 64 to 75 m2, linking an underground station 120 m LOCATION long and 172 m2 in section, called Lo Cruzat, with another open-cut station of the same length, called Plaza Qulicura. AND For the excavation of the tunnel, three circular attack pits of 15 m diameter and about 20 m depth are used. For the ADDITIONAL INFORMATION excavation of the Plaza Quilicura station, 154 piles D. 1,200 mm, 17 to 24 m deep, are executed. The walls of the excavation are supported by walls between mesh piles and shotcrete with cable anchors of different lengths. 02 Type Project CIVIL CONSTRUCTION WORKS LOS LEONES STATION: CONSTRUCTION DATA SHEET SUBWAY LINE 6 SANTIAGO METRO Owner: Metro de Santiago Project photos Start: 01/2016 Cross section: North Level 10,221 m2. South Level 4,239 m2 STATUS GEOMETRY End: 03/2018 Lenght: 120 m STRUCTURE Subway Tunnels OVERBURDEN Medium METHOD Mechanical NATM. Mechanical excavations COUNTRY Chile OF TUNNELING and reinforced concrete structures GEOLOGY AND PROVINCE Región Metropolitana Silts and gravels GEOTECHNICAL DATA PLACE Santiago TUNNEL EQUIPMENT Standard machinery for civil works BUDGET (EXCLUDING VAT) 13,834,738,742 CLP Los Leones station is both a terminus and an interchange between Line 1 and Line 6. The project also includes the civil work for the entrances to the station: • One called LOS LEONES NORTH, located at the intersection of Av de Providencia and Calle Suecia that provides access to the Line 6 station LOCATION • The other called LOS LEONES SOUTH, located at the intersection of Calle Suecia and Av Nueva Providencia, which AND is the connection between Line 6 and Line 1 ADDITIONAL INFORMATION • Both entrances are connected by a120m long underground tunnel The following works have been carried out: excavation, reinforced concrete structure, pillars, perimeter walls, beams, slabs and surfacing. Also include dare the mechanical, electrical sanitary and telecommunications installations including terminations in ceilings, walls and floors. Furthermore, the external works of urban planning, surfacing and landscaping have been carried out. 03 Type Project CONSTRUCTION DATA SHEET SUBWAY ELEVATORS METRO LINE 5 Owner: Metro S.A. Project photos Start: 01/2018 Cross section: — STATUS GEOMETRY End: 03/2019 Lenght: — STRUCTURE — OVERBURDEN — METHOD COUNTRY Chile — OF TUNNELING GEOLOGY AND PROVINCE Metropolitan Region Various GEOTECHNICAL DATA PLACE Santiago de Chile Tower cranes Lorry mounted cranes TUNNEL EQUIPMENT Trucks BUDGET 4 telehandler (EXCLUDING VAT) 16,138,000 € LOCATION AND In order to comply with the current accessibility regulations, Metro has set up elevators in all existing stations. ADDITIONAL This contract includes 26 elevators in 9 stations. INFORMATION 04 Type Project SECONDARY LINING OF CONVENTIONAL TUNNEL. PACKAGE 01, PHASE 1A, CONSTRUCTION DATA SHEET SUBWAY CONNECTING COLECTORA INDUSTRIAL STATION AND SHAFT PV 19 BIS. LINE 2 AND BRANCH TUNNEL AV. FAUCETT – AV. GAMBETTA OF THE LIMA & CALLAO BASIC METRO NETWORK Owner: Consorcio Constructor M2 Lima (DRAGADOS-FCC-COSAPI-ANSALDO-IMPREGILO) Project photos Start: 10/2016 Cross section: 68 m² STATUS GEOMETRY End: 08/2017 Lenght: 2,240 m STRUCTURE — OVERBURDEN Medium METHOD Lining of tunnels excavated by conventional methods COUNTRY Peru OF TUNNELING using concrete formwork trolleys GEOLOGY AND PROVINCE Lima Compacted gravel intercalated with sand and slime GEOTECHNICAL DATA PLACE Lima Self-propelled formwork trolleys Concrete pumps TUNNEL EQUIPMENT Telescoping handlers BUDGET Vertical elevating devices (EXCLUDING VAT) 9,277,995 USD Secondary lining and drainage of the previously executed tunnels between the Colectora Industrial Station and LOCATION Ventilation Shaft PV 19b. The application of concrete has been carried out using formwork trolleys. Access for AND equipment and materials is provided by three vertical shafts linking the tunnel required to be lined with the surface. ADDITIONAL INFORMATION Consequently, vertical elevating devices needed to be installed in the three access shafts. In order to complete the lining within the scheduled timeframe, two concrete application units were required. 05 Type Project CONSTRUCTION DATA SHEET SUBWAY STAGE 1A. PACKAGE 01. LIMA SUBWAY (PERU) Owner: UTE DRAGADOS - FCC - COSAPI - ANSALDO - IMPREGILO Project photos Start: 03/2015 Cross section: 68 m² STATUS GEOMETRY End: 06/2017 Lenght: 2,244 m STRUCTURE Subway Tunnel OVERBURDEN Medium METHOD Conventional methods for the excavation COUNTRY Peru OF TUNNELING and supports according to NATM GEOLOGY AND PROVINCE Lima Compacted gravels with sand and silt insertions GEOTECHNICAL DATA PLACE Lima Model L2C 2-boom jumbo Model PM-500 shotcrete robot TUNNEL EQUIPMENT Backhoe loader Front loader BUDGET Telehandler (EXCLUDING VAT) 22,387,000 € The work involves excavating 3 vertical ventilation shafts with an excavation diameter of 16.5 m and a tunnel with 2 LOCATION an excavation length of 2,243.8 m and an excavation cross-section of 68 m , with primary support by NATM, in AND compacted gravels with sand and silt insertions at the crown and invert in various stretches.