ENVIRONMENT&WATER

Page 1

environment & water



The aim of the Study is the improvement of existing stretches in the C-26 road (current N-260) and N-152 road in the stretch between the interchange with the C-38 – Ripoll - Camp-devànol road and the implementation of bypasses in Colonia Llaudet, Sant Joan de les Abadesses, Ripoll and Campdevànol, along approximately 20 km, with a design that enables future duplication. •Phase A: It consists of compiling and analyzing required information and determinants to define the most suitable solutions for the N-260 and N-152 roads improvement and the implementation of bypasses in towns within the stretch subject to study. •Phase B: A detailed study on scale 1/5000 will be developed. It will include the “Selected Alternatives” from the previous phase, as well as those that can originate as a result of the Environmental Consultation process. The Environmental Impact Study (EIA in spanish) and the document that will serve as basis to the Public Information and the Environmental Impact Assessment will be included as well. •Phase C: It includes the end of the study management for approval. Arguments obtained after Public Information will be studied. It will be sent to the Environment, Marine and Rural Area Ministry, together with the Environmental Impact Assessment, for the making of the corresponding Environmental Impact Statement (DIA in spanish).

• Habitats of Community Interest map. • Territorial and Cultural Synthesis map (detailed). • Orthophoto of the study area (detailed).

N-260 AND N-152 ROADS IMPROVEMENT. STRETCH: RIPOLL-CAMPDEVÀNOL INFORMATIVE STUDY Gerona, 2009-2012


The Previous Feasibility Study includes the studies, the design, the environmental management requirements, maintenance and the corridor road exploitation between Bogota D.C. and La Calera municipality (road 153 with road 7- Siberia ChiquitaLa Calera) and junction between Carrera Septima with Calle 153. In the first stage, the project range is defined, the project is described, the difficulties are identified, the needs demand and supply are analyzed, the background is presented and the road current state analyzed, and the Geological and Environmental aspects are surveyed. Once the result of the former study are obtained and considering the different analyzed aspects, a previous feasibility geometrical design, defined by its cross type section, is presented as well as a proposal to connect the corridor links with the urban road network of Bogota D.C. and La Calera municipality.

LA CALERA – BOGOTA ENVIRONMENTAL CONNECTION ROAD PREVIOUS FEASIBILITY STUDY Colombia, 2011-2012

BOGOTĂ

LA CALERA


The main objective of this bypass is to provide an alternative route to lessen traffic congestion on roads N634, BI-3302 BI-2301 as they pass through the town. The stretch is divided into two parts, the south and west bypass, strongly influenced by the sharp orography of the town of Ermua. The west bypass is a new route connecting roads BI-3302 and BI-2301, and detours urban traffic generated by the URTI and Goitondo industrial areas. The southern bypass connects the Eibar bypass roundabout with the N-634 from Areitio, eliminating the current toll booths and creating new ones. During the first phase, the environmental works consisted in drafting the joint evaluation environmental impact study for the special road plan in order to modify in order to adjust the zoning developed previously in the General Plan. This document is submitted to the public and the Environmental Agency of Regional Autonomous Government comes up with the Final Environmental Impact Report. Taking into account the environmental conditions defined in the previous phase, during phase 2 an environmental impact study of the proposed layout of the road is drafted and submitted to the public. Based on this document the Environmental Department of the Regional Autonomous Government of Vizcaya developed the corresponding Environmental Impact Statement (EIS). Finally, in the third phase, the environmental determining factors defined in the EIS are incorporated in the construction project, the environmental and landscape restoration project and the construction and demolition waste regulation.

• Tunnel entrance integration studies • Plan showing Constraints defined in the Environmental and Cultural Synthesis and excess soil deposits. • Cross-section 2-2.

ENVIRONMENTAL ASSESSMENT OF ERMUA BYPASS CONSTRUCTION PROJECT, FEASIBILITY AND DEFINITION OF OPERATING CONDITIONS Ermua, Vizcaya. 2009-2010


Works developed by Esteyco for the Prat Nord Competition, carried out in collaboration with the architect Manuel de Solà–Morales, were based on the following aspects:

PRAT NORD

• Objetive criteria and adopted solutions. • Route and road rank. • Sustainability and efficiency of the proposed forms and systems. • Economic viability study (regarding Infraestructures).

SUSTAINABILITY STUDY Barcelona, 2008

• River Areas Planning (Plan de Espacios Fluviales, PEF in spanish) of 2,003 (Catalan Water Agency, Agencia Catalana del Agua, A.C.A. in spanish). Extent of flooding for return periods of 100 and 500 years. • Noise levels in Viaduct solution (top) and in semi-underground roof solution (mouth). • El Prat de Llobregat noise map. Levels during the day (left) and at night (right). • Use Zoning in the Planning Proposal of the Management Centre.

TABLE MEASURING CO2 TONS GENERATED IN EL PRAT. Population: 63.402 inhabitants

1.597.619 toneladas CO2/año

ENERGÍA 508.556 toneladas CO2/año

Industrial

470.887

Doméstica

30.426

Aeropuert o

7.243

RESIDUOS 63.477 toneladas CO2/año Urbano TRANSITO 1.012.529 toneladas CO2/año

CONTRIBUCIÓN HUMANA 13.057 toneladas CO2/año

49.404

Interurban o

716.288

Aviones

246.837

Ciudadano s de El Prat

10.182

Pasajeros del aeropuerto

2.875


After carrying out a study and analysis process about the documentation related to rainwater included in the Master Plan of Zorrozaurre, it is proposed to introduce a series of measures in the Action, that in accordance with sustainability criteria and depending on the scope can be divided among: • General measures related both to the geometrical configuration and typology of the development and to the rainwater drainage network designed to be put into practice in the whole area. - Clarify the maximum levels of flood in the ria, which will set the minimum elevation of the dock. • Proposal for measures to introduce for the buildings that will be constructed during the action process. - Introduction of green or garden roofs should be a top priority, separative water collection should be demanded and a greywater treatment system, a material handling system and a energy recovery system following the CTE (Technical Code in Building, Código Técnico de la Edificación in spanish) should be arranged inside the development. • Proposal of uses linked to sustainability criteria which could be analyzed to be introduced in common areas of the action.

• Development general plan marking flood zones (lower elevation +4,00m). • Plan of modelization of the ground. • Plan showing possible location of the rain holding tanks

ZORROZAURRE

SUSTAINABILITY STUDY Bilbao, 2006


Selected criteria to asses the sustainability of La Hacienda residential development stem from the objectives and targets set by the policies and programs related to urban planning and sustainability that are being developed internationally, nationally and particularly in Andalusia, such as those contained in the Documento de Bases para la Agenda 21 (2000) and the CIUDAD 21 Program. These criteria should be applicable to the development and construction of buildings throughout their entire life cycle, from the urban planning stage to the waste from demolition and houses, and the exploitation and maintenance operations management . PLANNING AND RATIONAL LAND USE A balance between residential use and facilities and open spaces has been the objective of the zoning. Buildings in the area have been organized in three levels: separate houses, terraced houses and clustered houses. An excessive number of separate houses is avoided since they have a high land consumption in an area with such a marked topography. The road network tries to alter the current topography the least possible, and in fact, the existing road (Camino Loma del Retamar) is used as the main access to the new population centre, improving its route conditions. The network is completed with other access roads to each of the development areas and to the streets located in the inside of the plots, guaranteeing the required accessibility. • Plan showing most important ecologic zones as well as vulnerability of the environment of the Partial Plan: the “River Guadalmansa” Site of Community Importance and the “Vereda de Ronda” livestock trail. They are both separated from the residential area limit with the green reserved areas. • General plan.

MONTEMAYOR BAJO RESIDENTIAL DEVELOPMENT IN BENAHAVIS SUSTAINABILITY STUDY Málaga, 2006-2007


The HSL corridor in the PancorboAmeyugo stretch runs through areas of special environmental and landscape importance. These areas are the Montes-San Zadornil Obarenes Natural Park, which is also a Site of Community Importance (SCI) and a Special Protection Area for Birds, and the Montes de Miranda de Ebro and Ameyugo Special Protection Area. The stretch runs through a series of tunnels: Pancorbo, Ameyugo and Montes de Miranda, and viaducts across the NI road. The object of the present documents is to summarize the environmental studies that were carried out at the same time as the drafting work, in order to ensure environmental considerations were taken into account throughout the development. To this end, environmental factors, derived from climate, geology, soil, hydrology, hydro-geology, vegetation, fauna, landscape, cultural heritage, social-economic and environment issues, that determine the layout are analyzed taking into account the requirements determined in the Environmental Impact Statement. The project defines the necessary preventive and corrective measures in detail, in order to minimize the negative environmental impact and integrate the infrastructure in the surroundings. The landscape and visual integration study of the viaducts has been particularly relevant, given the special sensitivity of the territory, and so has the project of proposed compensatory measures for the affected “Montes Obarenes - San Zadornil” Natural Park, defined according to the Natural Park Directors and the Regional Planning Environmental Service of Burgos.

• Vertical noise map in the El Molino hotel and restaurant (measured during the day, evening and night). • Landscape units that the Basic Project layout crosses • Views of the landscape integration measures for the transition area between the Pancorobo tunnel and the Obarenes Mountains viaduct.

PANCORBO-AMEYUGO STRETCH OF THE MADRIDBASQUE COUNTRY-FRENCH BORDER HIGH SPEED LINE LANDSCAPE STUDY, ENVIRONMENTAL RESTORATION AND INTEGRATION PROJECT Burgos, 2009-2010


The aim of the projects is to carry out the definition of the preventive measures and of the environmental integration of the Detailed Designs of six Rest Areas located in the following roads of Andalusia: • (39-MA-4570) A-45, marker post 158.8 left side, province of Málaga; • (39-Al-3460) A-7, marker post 454.4 right side and (39-al-3470) A-7, marker post 457 left side, in the province of Almeria. • (39-J-4250) A-4, marker post 276. left side; (39-J-4260) A-4, marker post 284,5. right side and (39-J-4270) A-4, marker post 328, both sides, in the province of Jaén. During a first phase, environmental factors which condition the project: climate, air quality, noise, hydrology, geology, nature reserves, vegetation, fauna, urban planning, drover’s roads and landscape are analyzed. Later on, they proceed to the identification and assessment of the impact derived from the execution of the project, with the aim of finally defining the necessary preventive measures and corrective actions to minimize negative effects in the receptive environment and favour their landscape integration, with the planting of autochthonous species present in habitats of communal interest in the surroundings. The proposed management of all areas is configured with two separate parking areas for trucks and cars, which are separated by the rest area itself. It is a rectangular enclosure that includes the following amenities: toilets, picnic area covered by a wooden pergola, playground, information about arrangement of autochthonous species, garden zones and a household waste recycling centre, connected by a treelined avenue that runs lengthwise along the block.

• Street furniture and fixtures planned for the rest areas, wooden pergola. • Distribution plan of a rest area. • View of the future site of the rest area in the road A-4, marker post 328, Jaén. • Plan of the Habitats of Community Interest in the study area of the A-7 road, marker post 457,00 rest area in Almería

6 REST AREAS IN ANDALUSIAN ROADS DETAILED DESIGN Málaga, Jaén and Almería, 2008-2010


The aim is to carry out the definition of the preventive and environmental integration measures of the detailed designs of the new Fornells, Sant Gregori and Medinyà interchanges in the AP-7 motorway, in the province of Gerona. For that purpose, the environmental factors that condition the project have been analyzed. Some of them are: geology, hidrology, vegetation, fauna and urban planning, taking into account the prescriptions imposed by the Environmental Impact Assessment and the Approval of the Record of Public Information. Later, the identification and assessment of the impact derived from the construction of the interchange is carried out. This enables the definiton of the necessary preventive and corrective measures to minimize the negative effects in the area and to integrate the infrastructure in its environment.

• Plan of the new Fornells interchange in connection with the green ring of Girona. • Plan and infographics of the wildlife crossing in Fornells. • Transverse section with the proposed environmental restoration measures. • Picture showing the zoning against light pollution protection with the distribution of the planned luminaire in the Sant Gregori interchange and Cross section with the representation of the lighting system.

NEW FORNELLS, SANT GREGORI AND MEDINYÀ INTERCHANGES, IN THE AP-7 MOTORWAY RESTORATION AND ENVIRONMENTAL INTEGRATION Gerona, 2007-2008


The conceptual, legal and economic reserve of the proposed measures to make up for the imapct of the A-14 highway in its way through a Red Natura 2000 area, Special Protection Areas for Birds (ZEPA in spanish) and Place of Importance in the Region (LIC in spanish) Plans de la Unilla, are the result from a long reflection with the different agents involved to be able to guarantee the technical and economical viability of the proposal and its long term efectiveness. It is studied to add in the Project the necesary corrective and compensatory measures to minimize the highway impact. It is made in coordination with the Serveis Territorials a Lleida del Departament de Medi Ambient i Habitatge (Regional Services in Lleida of the Department of Environment and Housing), the project drafting technicians and the responsible from the Ministry of Civil Works. They are searching for solutions for the correction and compensation of the space fragmentation (barrier effect) and for the reduction of the loss of fauna habitats. The alteration of the Clot de la Unilla catchment basin and the loss of extensive rainfed agricultural land is compensated.

• Location plan. • Current state El Clot de la Unilla lake. • Plan of the catchment basin of The Clot de La Unilla wetland. • Detail of the section of the retaining wall and transverse section of the highway.

A-14 HIGHWAY THROUGH PLANS DE LA UNILLA STRETCH: ROSELLÓ- ALMENAR CONSTRUCTION PROJECT Lérida, 2006-2007


A wetland in the new viaduct over the Guadalhorce River has been proposed. It will have similar conditions to natural wetlands including vegetation related to periodic flooding, with its own dynamics. Furthermore, it will also contribute to create a new habitat as a feeding area. This will attract waterfowls such as herons, anatidaes, waders and seagulls which breed in the mouth of the river. Thus, it will reinforce the wetlands’ role as wildlife corridors. The new flooding area, which consists of an artificial hollow covering 90,000 m2 and an average depth of 1 metre, is located at the right side of high-water bed; specifically, in the area between abutment 1 and the diversion dam, flooding piles from 1 to 6. This plot of land belongs to Andalusian Water Agency. Water intake will come from the Churriana ditch and it will be necessary to dam up around 90,000 m3 with an average bed of 1.403 m3/s. The fitting-out and re-vegetation of the wetland banks and embankments are also aimed at creating a River Park in the viaduct area, which is −at the same time − compatible with next urban developments in the area.

• Initial sketch of the River Park. • Integration of the new viaduct in the River park. • Photomontage including proposed fittingout and re-vegetation measures. • Infographics of the new viaduct.

GUADALHORCE RIVER PARK

CONSTRUCTION PROJECT Malaga, 2006-2007


Protection from railway acoustic activity through noise protectors and vibration absorbers throughout the AtochaChamartin high speed tunnel at the stretch of Atocha-Torrejon de Velasco of the Levante High Speed Line.

Client: ADIF MAIN CHARACTERISTICS: Noise study: Stretch length: 34,021 m Noise protectors: 47,772 m2 Noise protectors cost: 22,121.40 € Vibration study : Atocha-Chamartín tunnel length: 7,040 m Vibration absorber layer surface: 8,105 m2 (1,026 m) Vibration absorber cost: 356,555 € Fees: 556,346 €

• Building vibration model of one of the first stretches. • Noise protection study (inventory plan). • Vibration Study (Receptors study plan).

STRETCH: CHAMARTÍN - TORREJÓN DE VELASCO VIBRATION AND NOISE PROTECTION IN THE NEW RAILWAY ACCESSES OF LEVANTE´S HIGH SPEED LINES Madrid, 2011


The project takes places along the suburban train railway corridor between Hospitalet de Llobregat and the current covered area next to Sants square, between the marker posts 1+040 to 1+738 of the High Speed Line that runs in tunnel under this corridor. The resolution of 9 December 2004 formulates an environmental impact assessment. It establishes that the habitability conditions of the neighborhoods at the South of Sants station should improve with the railway remodelling of this area. It will reduce the impact produced by the railway. Therefore, the Project is developed to improve environmental conditions in the urban area close to the Station. It will minimize noise and vibration impact and improve the transverse permeability and visual impact. In a great part of its development, the covering of the suburban train and tube are joined in plan, leaning both of them on a shared central wall. Lateral closures located at both sides of the Antoni Capmany street and at the installations area of the Metropolitan Tranports of Barcelona are made up of in situ reinforced concrete in certain stretches, and of a precast concrete diagonal wall, with appearance of a triangular structure, in others. To mitigate noise, the gaps of the lattices are closed with transparent or translucent glass surfaces that avoid visual barriers.

• Transverse section of the stretch. • Infographics of the project proposal. • General plan of the urban planning showing the affected receivers.

NOISE PROTECTION OF THE RAILWAY ACCESS TO SANTS STATION CONSTRUCTION PROJECT. PHASE I Barcelona, 2005-2010


The aim is to define the acoustic shielding measures required to guarantee the acoustic quality objectives established by the Environmental Impact Assessment (Resolution of 9 of May, 2002. B.O.E. –Official State Gazette- no. 113 of 11/05/2002). Forty seven noise affected receivers are identified. Different solutions of acoustic shielding are modelized in 3D on computer models, optimizing their acoustic efficacy by means of an interactive process.

• Examples of analyzed sensitive points before and after the corrections. • Examples of acoustic shields placed in different stretches. • Transverse section of the Xátiva Station stretch with the proposed corrective measures.

NOISE PROTECTION AT THE RAILWAY CORRIDOR XÁTIVA – BENIFAIÓ CONSTRUCTION PROJECT Madrid - CLM - C. Valenciana - R. Murcia High Speed Line. Valencia. 2007


Strategic noise maps expect to assess the impact of the predominant noise sources in the current society, to define action plans in a later phase to mitigate the affected areas. The study sphere for which these Strategic Noise Maps have been developed - noise level maps, noise exposure maps and noise impact maps – correspond to 12 roads of Valencia with more than 6 millon vehicles per year, to the A-3 y A-7 expressways, which are longer road axis, the V-11 and N-220, which are urban through roads, to the V-30, which is the Valencia bypass, etc. Criteria adopted for assessing the affected population, the tools used and the solutions proposed to obtain reliable and representative information have been developed taking into consideration the directions of the General Directorate of Roads, the good practice guide of the working group WGAEN and the experience in acoustics of our experts. Maps at scale 1:25.00 and contour lines every 10m are developed in the A phase. Later on, the areas which will be studied in detail in the phase B are selected at scale 1:5.000, and contour lines every 5m.

• Plan of the study area. • Example of map developed during Phase A. • Study three-dimensional model. • Examples of area analyzed in detail.

NOISE STRATEGIC MAPPING OF STATE ROADS IN THE PROVINCE OF VALENCIA PRELIMINARY STUDY Valencia. 2007


The project consists on defining the necessary measures to create an acoustic baffle to guarantee the quality objectives established in the Regulations of protection against noise pollution in Andalusia. The stretch length is, approximately, 55 km long, with many viaducts and tunnels, Gobantes, Abdalajís, Álora, Espartal, Tevilla, Gibralmora and Cártama, and starts at the beginning of Section IX, Antequera – Bobadilla Station and ends in the Section XXI, Los Prados – Arroyo Las Cañas. The proposed solution collects the conclusions of the foreseeable acoustic levels survey, based on a Threedimensional prediction model (IMMI), that determines the points where those quality objectives will be exceeded. From the 201 possible benefited places from the project –buildings, schools, health centers– comprised in the study strip (with 200/300 m wide to both sides of the platform), 68 sensitive points were selected for their three-dimensional modeling, finally deciding the need of establishing noise protection systems in 4 of them, with the following solutions: • 3,712 meters of steel/aluminum metallic baffles, from 2 to 5 m high, on structures, in cut and fill head. • 4,194 metes of concrete baffles, from 3 to 6 m high, in cut and fill head. • 215 meters of concrete/methacrylate mixed baffles, of 2+2 m high, at the entrance of Malaga station. At the base of the external side of the baffles located in cut and fill, plantations with evergreen trees and bushes species have been planned –savin, bougainvillea and myoporum– to favor their visual integration in full view of observers from the outside of the High Speed Line.

• Plan with corrective measures. • Examples of analyzed sensitive points: base situation and corrected situation.

NOISE AND VIBRATION PROTECTION IN THE ANTEQUERA/SANTA ANA–MÁLAGA STRETCH CONSTRUCTION PROJECT Córdoba-Málaga High Speed Line. Málaga. 2006


This study envisages the design of a proposal aimed at correcting and solving environmental deficiencies, high sound levels and air pollution in order to improve the integration of open spaces and residential buildings in the C-58 motorway (MP 5+400 to 6+500) on its way to Ripollet (Barcelona). Nowadays, the AADT in C-58 is around 145,000 vehicles which transmits maximum sound values at night of 80 dB in the residential building area. This study is divided into two different areas of intervention aimed at solving, in a specialized and local manner, problems of the different involved areas. This proposal has a common objective: the construction of a big linear park with the purpose of minimising the visual and acoustic impact of the motorway, consolidating the southern façade of the Pont Vell - Tiana neighbourhood and providing, on an urban scale, an area of common interest similar to the Park located at the other side of the Ripoll river. The proposal to widen the existing footbridge over the motorway and river, the new car park and the new façades of the most acoustically affected buildings is part of the landscaping project of the linear park. The residential buildings’ new façade will act as an acoustic screen of curtain-walling type, and, at the same time, it will create an additional 15 m2 habitable space in each house. These proposals will decrease sound levels at night to 50 dB in the area of residential buildings, being the main problem to be solved in this study.

• Section of the area of Verge de Montserrat residential buildings. Curtain walling and acoustic screens • General plan of the proposal. • Photomontage of the curtain-walling proposal. • Section of the new gallery of acoustic control.

C-58 MOTORWAY ENVIRONMENTAL INTEGRATION. RIPOLLET PRELIMINAR STUDY Barcelona, 2006


Hydrological and hydraulic study of Salubita, Oaska and Luzuriaga streams in the area of the Gipuzcoa branch of the New Railway Network in the Basque Country (the so-called Basque “Y”). It goes opposite to the urban area in Tolosa, along the steep mountainside of the left bank of the Oria river, into which the above mentioned streams flow. The work consists of analysing each of the streams by using HEC_RAS program. Previously, its drainage area as well as the hydrological characterisation of it have been defined in order to establish the required conditions to not affect the railway infrastructure.

•GIS treatment of drainage areas for the hydrological study. •3D view of the Salubita, Oaska and Luzuriaga streams.

HYDRAULIC STUDY OF SALUBITA, OASKA AND LUZURIAGA STREAMS PLATFORM OF THE NEW RAILWAY NETWORK IN THE BASQUE COUNTRY Guipúzcoa, 2007-2008


Tenders for Waste Water Treatment Plants (WWTP) of LAMIAREN in Aramburu (Bermeo, Vizcaya) and the Oria medio in Aduna (Guipúzcoa) .

WASTE WATER TREATMENT PLANTS OF LAMIAREN IN ARAMBURU AND ORIA MEDIO IN ADUNA

Among the deciding factors of the conception and design of the plant, we can stress the following ones: the plot location and environmental characteristics thereof.

CONSTRUCTION PROJECT AND WORK SITE MANAGEMENT, TENDERS. Bermeo, Vizcaya and Guipúzcoa. 2007

Taking into account those preliminary determinants, the project aims to integrate the WWTP in this environment, minimizing visual impact and paying great attention to the layout and design of the buildings and to the components of the plant.

• Lamiaren WWTP in Aramburu, Bermeo. • Photomontage, infographics of the operations building and the development general plan. • Oria Medio WWTP in Aduna. Plan with corrective measures.


The 7.7 km long water pipe, designed to carry a flow of 50 m3/s, goes along a short but very complex stretch. The project, which also considers environmental and economical issues, and was designed to be easily built, includes: Four stretches consisting of a 18.4 m high trapezoidal channel. Four tunnels with a total length of 4,455 m, with a 5.5 m Ø inner circular section. Six types of sections have been adapted for the 16 different types of geologicalgeotechnical formations which are crossed. The Campillo tunnel is 750 m long and goes through 4 different soils. The Fanzara tunnel, 1,955 m long, is of a great complexity because it goes through 6 formations of very different resistance, having to revert to N.M.A. and strengthening of the cover, using an inverted vault, micropile shields in the areas with front stability problems and waterproofing of the back face. In order to avoid the strict impact on the landscape at the valley of the Mijares River, a Site of Community Importance, an 878 m long siphon and a siphon holder have been designed. There is a 100 m long ditch before the 278 m long elevated siphon which goes over the channel and the Mijares River, with a maximum span of 60 m. By its side, there is a 580 m long underground siphon, with double 3,300 mm Ø tube. The Solsida Aqueduct has a length of 104 m and 3 spans. The crossings over the channel were also designed, across every stretch of the Diversion Channel, with a trayshaped section in order to reduce the elevated slope.

• Site plan, typical cross sections photomontage of the layout.

and

SOUTHERN BRANCH. EBRO DIVERSION CHANNEL. BLOCK 15: CAMPILLO TUNNEL(N) - ONDA TUNNEL (S) CONSTRUCTION PROJECT Castellón, 2003-2004


• Elevation, plan and geology of the layout in the valley of the Mijares River. In order to avoid severe environmental impact at the valley, declared a Site of Community Importance, the solution chosen in the Environmental Impact Study (an 800 m long aqueduct and 60 m high piles) was changed to an 878 m long siphon and siphon holder. • The geological report has been quite detailed and thorough, due to the complexity of the area and the differences between the IGME geological maps E/1:50.000 and 1:200.000, and the strict repercussions in the design of the tunnels.


The decisive factor for the concept and design of the Waste Water Treatment Plant (WWTP) of the Lower Bierzo was that the site is located far from urban centres, in a flood-prone area in the valley of the Sil River, close to the confluence with the Cúa River and the incorporation of the Turbia River. Consequently, it is an area of great environmental interest, with lush vegetation made up of poplars with interspersed alder groves, on marshland and by the riversides, willow groves and meadows, in addition to a wide variety of other subspecies of riverbank vegetation. With these conditioning factors, the design attempts to integrate the WWTP in this environment while ensuring the facility’s optimum functionality. The plant will process the waste water of the large towns of the Bierzo and Laviana, with a maximum flow rate of 2,873 l/s (a daily peak flow rate of 1,288 l/s and a daily average flow rate of 644 l/s). A fourth treatment line extension is planned. Special consideration was given to the environmental integration, both in the building’s elevations and in the replanting and environmental adaptation of the facility and its surroundings.

 Detail of the secondary decanting distribution and degasification camera. • Birdseye view of the WWTP during construction. To avoid the risk of flooding, 253,000 m3 of earthfill were necessary on the 71,392 m2 site, which was designed for floods with a 25 year return period. The soil was obtained from the surrounding plots in which, at the end of the construction work, the marshy environments where the current riverside flora and fauna develop, will be reproduced. • Views of the biological reactors and their ballast concrete during the execution of the construction work.

WASTE WATER TREATMENT PLANT OF THE LOWER BIERZO IN VILLADEPALOS CONSTRUCTION PROJECT AND TECHNICAL ASSISTANCE TO THE SITE MANAGEMENT León, 2001 / 2002-2003



The Waste Water Treatment Plant (WWTP) of the Lower Bidasoa, in the municipal district of Hondarribia, is located in an area with a high quality landscape, in the vicinity of the of Higuer Cape lighthouse and the adjacent campground. This campground is the starting point of several rural pathways that run along the Mount Jaizkibel cliffs. Therefore, the main aim in the design of the civil engineering works was to attempt to minimise the visual impact by studying the situation of the different elements of the scheme, with a careful design of the buildings and other integrating elements, a suitable integration of the necessary dumps and a final restoration of the resulting landscape and the surrounding paths. The final result, reflected in the development plan, involves a compact distribution in which the sludge treatment tanks, which are larger and higher, are "concealed" between the hillside and the sludge treatment building. On the rest of the site the water treatment tanks (like swimming pools that hardly protrude above the ground) and the main buildings are laid out more freely.

• Access floor-plan to the Control building. • Aerial view of the WWTP. • Views of the main buildings, including the Pre-treatment and Blower Buildings, two simple rectangular volumes designed with a striking “u-glass” glazed walls with a horizontal pattern, and the Control Building, composed of three intersecting volumes in exposed concrete half-way up the hillside.

WASTE WATER TREATMENT PLANT OF THE LOWER BIDASOA IN HONDARRIBIA CONSTRUCTION PROJECT AND TECHNICAL ASSISTANCE TO THE CONSTRUCTION MANAGEMENT Guipúzcoa, 1999 / 2000-2003


Turn static files into dynamic content formats.

Create a flipbook
Issuu converts static files into: digital portfolios, online yearbooks, online catalogs, digital photo albums and more. Sign up and create your flipbook.