The consortium leaded by GPO was awarded by the Catalan Water Agency (ACA) with the Detailed Design for the reparation of the pipes and the pumping station of the treatment plant of Tarragona, so that the flow of treated water can reach the treatment plant in Vila-Seca (province of Tarragona), where the future tertiary plant was placed. The tertiary treatment system was designed to treat 45,000 m3 of water a day, using a system of reverse osmosis that achieves the quality required by the industries (end-user).
Llobregat’s Desalination plant
Service: Construction Supervision and Project Monitoring Client: Aigües Ter-Llobregat (ATLL) Period: 2006 – 2011
GPO developed the Project Monitoring for the construction of the Llobregat’s Desalination Plant to supply water to the Metropolitan Area of Barcelona, the extension of the Abrera – Fontsanta pipelines to el Prat del Llobregat to connect the desalination plant to the regulating reservoirs in Barcelona, the complementation of the connection between the Barcelona, Abrera and Cardedeu desalination plants, and other compensatory measures.
GPO was awarded with the Detailed Design of the Regulating Reservoirs in elevation 70 and 95, pumping station and pressure regulating reservoir of elevation 95 in Sant Boi de Llobregat. The purpose of the project is providing the basic design and the subsequent integration into the planning, as well as the environmental impact assessment of two drinking water reservoirs of 45.000 m3 and 25.000 m3 in elevation +70.00 and +95.00 respectively placed in Montbaig Forest Park of Sant Boi de Llobregat.
Pumping, Piping and Dam construction in Vall Baixa
Service: Construction Supervision Client: Depuradora del Baix Llobregat, S.A. (DEPURBAIX) Period: 2008 – 2009
GPO was awarded by Depurbaix with the Construction Supervision of a Pumping, Piping and Dam station in Vall Baixa to reuse the effluent of the Industrial Water Treatment in Baix Llobregat. The constructed infrastructures allowed the pumping of part of the treated water in the reversal osmosis treatment plant at Sant Boi to the starting point of the main irrigation canal parallel to Llobregat river, where it is regulated thanks to a dam to irrigate the area known as “Vall Baixa”.
Sant Vicenç Railway Urban Integration
Service: Feasibility Study Client: GISA – Infrastructure Administration of Catalonia Period: 2010
GPO was awarded by GISA with the Feasibility Study and the Environmental Report of the urban integration of the railway in the city of Sant Vicenç dels Horts, Barcelona. The studied segment, 1.889 m long, was located in a fully consolidated urban environment, with buildings adjacent to the tracks and with all the disadvantages of a railway segment creating an urban opening to the city. The projected solution divides the project into four segments. For the first one (around 500 m long), a covering which gave total access to the urban segment is designed, through a structure compatible with the railway crossing. The other three segments were provided with precise solutions improving the connection between both sides and allowing the visual and acoustic integration of the railway into the city.
The crossing of the high speed railway through the city of Beniel required the design of several impact mitigation measures. GPO was awarded with the Detailed Design for the landscape and urban mitigation measures. The project included the design of an urban park along the corridor, linking the city with the station. It also included the design of noise barriers and several overpasses crossing the rail line to improve urban connectivity along the 4 km long corridor.
REGSA awarded GPO with the Detailed Design for the Segarra – Garrigues irrigation system. The project consisted of defining and assessing the works required to transform the dry land area into irrigated land, within the municipalities of Alfés, Sunyer and Aspa. The net irrigable area is 2,097 Ha and the total water requirement (water deficit) is 6,500 m3/Ha-year.
The services of the project consisted of the definition and assessment of the works corresponding to the primary network infrastructure to turn 2,577.7 ha of Terra Alta into an irrigation system. It also includes the electric connection for the whole irrigation system (control, operation and monitoring) and the adaptation to the former system in Terra Alta.
GPO was awarded by REGSA the Detailed Design of the distribution network of the area corresponding to the pond No. 3 of the irrigation of Terra Alta. The project included the necessary works, installations and equipment to irrigate a gross area of 2,450 Ha in La Fatarella, Corbera and Vilalba dels Arcs. The project included also the irrigation system advertising.
Irrigation System of Southern Segrià
Service: Construction Supervision Client: Regs de Catalunya, S.A.U. (REGSA) Period: 2008 – 2012
GPO was awarded by REGSA with the Construction Supervision for the Regulating and Distribution Network for the Irrigation of Southern Segrià. The works included the pumping station, the primary pressure piping, the regulating and distribution pool and the distribution network.
Besós Water Treatment Plant
Service: Construction Supervision Client: Depuradora del Baix Llobregat, S.A. (DEPURBAIX) Period: 2002 – 2004
The most relevant part of the project was the construction of biological reactors and secondary settlers with concrete slabs and walls. The water treatment plant has 47,000 m2 of support and 55,000 m2 of walls between 4 and 15 m high and, at the end of the works, about 110,000 m3 of concrete were poured. The need of integrating the treatment plant into the urban scene of the Forum de las culturas 2004 and, at the same time, building an esplanade forced to cover it up. The cover was entirely built with concrete prefabricated elements.
Baix Llobregat Wastewater Treatment
Service: Detailed Design and Construction Supervision Client: Spanish Ministry of Public Works Period: 2004 – 2006
Depuradora del Baix Llobregat, S.A. awarded GPO with the Detailed Design and Construction Supervision for the reuse of Baix Llobregat wastewater to help solving the problem of water deficit for ecological and environmental uses, suffered by the internal basins of Catalonia. The system supplies 50 hm3/year of recycled water from the Baix Llobregat Industrial Water Treatment, which is used as an ecological flow for the Llobregat River, as replacement of agricultural irrigation and as the maintenance of damp areas.
GPO was awarded by the ACA (Agència Catalana de l’Aigua) with the Detailed Design of the collectors that run mainly through the bed of the Magarola stream and the Mal torrent, in Esparreguera and Abrera. These collectors presented a clear lack of capacity and an important structural deficit. Thus, the present project includes the necessary works for the execution of a collector of about 6 kilometres in length and different diameters (between 400 and 1,200 mm), which replaces part of the current waste water pipeline of the Abrera system.
The plans for the improvement of water supply in southeastern Spain, a region experiencing cyclic draughts, contemplated the development of different actions. One of them was the Ebro river transfer in the community of Aragon, consisting in an enormous infrastructure running for 914 km. GPO contributed to the design of one of the sections of this project, located in the area of Molina Segura in the community of Murcia. One of the main challenges was the need to maximize energy efficiency, which required the design of a tunnel to pass through Sierra de la Espada mountain area. The 4,75m-diameter tunnel was conceived for hydraulic use and runs through the zone of marls and calcareous rocks in Sierra de la Espada (300m above sea level).
GPO was awarded by ATLL with the construction supervision services for the segment of pipelines between ETAP TER and the distribution chamber of Sant Celoni. The characteristics of the works were as follows: construction of a 11.8 km long pipeline’s segment; execution of 28 discharge chambers and 39 air ventilation chambers, as well as the construction of 3 derivation chambers provided with the necessary elements for the realization of the future municipal connections.
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