SANTURTZI C.C.P. Environmental Statement / 2017

SANTURTZI C.C.P. Environmental Statement

2017

Santurtzi Combined Cycle Plant Environmental Statement for 2017 / May 2018 Table of Contents

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1. Iberdrola Generación, S.A.U...... 6

2. Santurtzi Combined Cycle Plant ...... 9

3. Environmental Management System ...... 12

3.1 Employee involvement ...... 13

4. Environmental Policy ...... 14

5. Environmental Aspects ...... 20

5.1 Identification of Environmental Aspects ...... 21

5.2 Evaluation of Environmental Aspects ...... 21

6. Environmental Management Programme ...... 26

7. Environmental Indicators ...... 28

7.1 Emissions into the Atmosphere ...... 29

7.2 Discharges ...... 32

7.3 Waste generation ...... 36

7.4 Resource Consumption ...... 38

7.5 Biodiversity ...... 42

7.6 Noise ...... 42

8. Legislation ...... 44

9. Deadline for the next validation ...... 47

10. Validation ...... 48

Santurtzi Combined Cycle Plant Environmental Statement for 2017 6 / Iberdrola Generación, S.A.U.

1 Iberdrola Generación, S.A.U.

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IBERDROLA GENERACIÓN, S.A.U. is a wholly-owned subsidiary of IBERDROLA, S.A. dedicated to the generation of electricity. IBERDROLA S.A, its subsidiaries and affiliates do business in almost twenty countries. The main products Iberdrola supplies to its clients are electricity and natural gas. Through its subsidiaries Iberdrola also provides engineering and construction services for electrical power generation, distribution and control facilities; operation and maintenance of electrical power generation facilities; land management and development; and sale and rental of homes, offices and commercial premises.

The organisational structure of IBERDROLA, S.A. is as follows:

Secretary of the Board

Internal Audit Chairman Chairman’s Oﬃce

Country Corporate Compliance Directors

Administration and Control Finance and Resources

Legal Services Corporate Development

Business Group General Management

Group Deregulated Business Group Network Business Group Renewables Business

Santurtzi Combined Cycle Plant Environmental Statement for 2017 8 / Iberdrola Generación, S.A.U.

The installed capacity of IBERDROLA S.A. (in MW) in Spain is as follows:

Installed capacity of Iberdrola, S.A. in Spain MW

12 % 22 % Nuclear Gas Combined Cycle 3,177 Nuclear 3 % Coal 874 Coal 368 Cogeneration 15,821 Renewable

2 % Cogeneration 5,695 Gas Combined Cycle 61 % Renewable

Figure 1: IBERDROLA S.A. installed capacity

HIDROELÉCTRICA IBÉRICA S.L. UNIPERSONAL, a subsidiary of IBERDROLA GENERACIÓN S.A.U., adapted its SANTURTZI COMBINED CYCLE POWER PLANT (hereinafter SANTURTZI C.C.P.) to the Eco-Management and Audit Scheme (EMAS), approved by EC Regulation 1221/2009 of the European Parliament and of the Council of 25 November 2009 on voluntary participation of organisations in community environmental management and audit systems, amended by Commission Regulation (EU) 2017/1505 of 28 August 2017. In 2017, IBERDROLA GENERACIÓN S.A.U. reiterated its commitment to the environment by maintaining seven Thermal Generation facilities registered with the Eco-Management and Audit Scheme (EMAS). The corresponding updates to the Environmental Statements for the Thermal Power Plant of Velilla and the Combined Cycle Power Plants of Castejón, Aceca, Arcos, Escombreras, Santurce and Castellón are available to the public on the website: www.iberdrola.com. This Statement is intended to serve as an instrument of communication, providing information about the Company to any client, entity or party interested in its services. Information is provided on all environmental parameters, as well as the company’s situation with regard to current legislation. Suggestions and comments can also be emailed to [email protected], or sent by post to: Dirección de Innovación, Sostenibilidad y Calidad de Iberdrola. Calle Tomás Redondo, 1. 28033, Madrid.

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2 Santurtzi Combined Cycle Plant

Cogeneration

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SANTURTZI C.C.P, which is owned by HIDROELÉCTRICA IBÉRICA S.L.U, a wholly-owned subsidiary of IBERDROLA GENERACIÓN, S.A.U,is a plant dedicated to the generation of electricity (NACE Rev.2: 35.11 “Production of electricity from a conventional thermal source”) and it is located at Carretera Cercamar s/n in the municipal district of Santurtzi (Biscay). The plant is operated and maintained by IBERDROLA OPERACIÓN y MANTENIMIENTO, S.A.U. personnel (hereinafter IOMSA), a wholly-owned subsidiary of IBERDROLA GENERACIÓN.

Figure 2: SANTURTZI C.C.P. site

The SANTURTZI C.C.P. has one unit in operation, Unit 4, based on combined cycle technology with a net capacity of 396.40 MW. It has been operating commercially since 03/01/2005. The operation of the combined cycle generator is based on the integration of two types of thermodynamic circuit: an open gas-air circuit and a closed water-steam circuit, for the generation of electric power by converting the thermodynamic energy of the fluids into mechanical energy (in the turbines), which is then turned into electricity (in the generator). The process is described in the following diagram: Chimney

Steam

Air Gas

Transformer Alternator

Heat recovery steam generator Gas Steam turbine Turbine

Condenser

Condensate Seawater cooling open circuit

Figure 3: Electricity production process at the SANTURTZI C.C.P.

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The main plant components are: • Gas turbine that operates through the combustion of natural gas. If there is a fault in the natural gas supply, it can also operate with diesel oil. -- The natural gas is supplied by the ENAGAS gas pipeline. -- The plant has a 1,000 m3 diesel oil tank. • Heat recovery steam generator, which produces steam from the heat of the gas turbine exhaust gases. • The steam turbine, which converts the energy from the steam produced in the boiler into mechanical energy. The exhaust steam from the steam turbine moves to the condenser and the water (condensed steam) is recirculated to the heat recovery steam generator, where the cycle begins again. The cooling required by this process is carried out using sea water in an open circuit. • The alternator then converts the turbine rotation into electrical energy, which is converted to 220 kV in the transformer and sent to the mains grid. Like any other industrial activity, the consequences of electricity generation have a potentially adverse impact on the environment. The SANTURTZI C.C.P. controls that impact and tries to minimise it by adopting both preventive and corrective measures, thereby optimising the production systems. The following figure shows the production of electricity at the SANTURTZI C.C.P. in MWh during the period between 2006 and 2017:

Gross production (MWh)*

1,600,000 1,421,032

1,246,778 1,082,611 1,023,731

800,000 650,320

177,592 141,178 49,723 1,051 6,091 0 0 0 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017

* Change in gross annual electricity output. Compared to previous years, operation has been very low or null, but it should be noted that during the last quarter of 2017, the SANTURTZI C.C.P. produced electricity, thus changing the trend of recent years. Staff organisation at theSANTURTZI C.C.P. is designed to achieve safe and efficient operation of the facility's production processes while minimising environmental impact and guaranteeing the safety of the personnel. To achieve this, the personnel is organised with the following block structure: • Operation: responsible for operating the facilities and the production process • Maintenance: responsible for maintaining the facilities in correct order and resolving any anomalies that may arise • Plant Engineering: responsible for supporting the facility's planning and management processes • Chemicals and environment: responsible for ensuring legal compliance and minimized environmental impact, as well as ensuring that chemical parameters are maintained within the design levels. • Safety, quality and training: responsible for coordinating workplace hazard prevention in the facilities. as well as assuring and maintaining quality systems (ISO 9001, ISO 14001, OSHAS 18001, EMAS, monitoring current legislation), and programming continual personnel training.

Santurtzi Combined Cycle Plant Environmental Statement for 2017 12 / Environmental Management System

3 Environmental Management System

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IBERDROLA GENERACIÓN, S.A.U. holds UNE EN ISO 14001 certification for all thermoelectric generation: combined cycles and conventional thermal power plants, as well as for all hydraulic generation. These certifications are periodically reviewed, by means of internal and external audits, to ensure continuous improvements in environmental management. SANTURTZI C.C.P.has set up an Integrated Quality, Environmental, and Occupational Health and Safety Management System (SIGEC), which has been certified by various certification agencies for Environmental and Occupational Health and Safety Management. On 22/12/2005 it was granted environmental certification according to ISO 14001:2004 by the Spanish Standardisation and Certification Association (AENOR), which was renewed on 30/09/2016. Since 23 April 2008, SANTURTZI C.C.P. has been entered in the registry of centres adhered to the Eco- Management and Audit Scheme (EMAS), with registration number ES-EU-000041. The planning and operation of the SANTURTZI C.C.P. Environmental Management System focus mainly on the following: • Identification and assessment of the environmental matters arising as a result of energy production. Every significant environmental aspect has an associated operational control procedure, known to all company staff and to everyone working on behalf of or for the company. • Identification of and response to emergency situations through the establishment of a “Self-Protection Plan” and “Emergency Environmental Instructions (in Spanish, IMAE)”. • Identification and evaluation of compliance with environmental legislation applicable to combined cycle plants. • Identification of training needs and completion of the actions required to satisfy them, in order to promote greater environmental awareness among staff. • Establishment of environmental objectives and goals, approving an Environmental Management Programme, which defines the deadlines, resources and people responsible for achieving them. • Establishment of a procedure for communication among all levels and positions in the organisation, and with all external stakeholders. • Establishment of an internal audit programme to verify that the SIGEC is kept up-to-date, is effective and complies with the implemented standards. • Performance of the environmental management system review for management to ensure its ongoing adequacy, suitability, and efficiency.

3.1

Employee involvement In 2017, HIDROELÉCTRICA IBÉRICA, S.L. UNIPERSONAL, a subsidiary of IBERDROLA GENERACIÓN S.A. UNIPERSONAL, at the SANTURTZI C.C.P, continued to promote employee involvement at all levels through actions associated with establishing and achieving goals and objectives, proposing improvements to prevent pollution as part of a competition for the best idea, drafting review reports by the environmental management system division, holding Local Quality Control Committee COCAL meetings (where heads of the different departments in the plant's organisational structure are present, and through them all employees), providing environmental management training and employee information sessions, as well as the drafting of this Environmental Statement. The aim is to continue with these consultation and participation mechanisms in 2018.

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4 Environmental Policy

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IBERDROLA has established an Environmental Policy as the basis for its Environmental Management System. The Management ensures that all members of the company understand and implement this policy, which is available to all interested parties at www.iberdrola.com . The version in force during 2017, valid as of 6 April Environmental Policy / 1 2016, is reproduced below.

Environmental Policy 06 April 2016

Contents /

1. Purpose 2

2. Scope of Application 2

3. Decentralised Environmental Organisation 2

4. Environmental Commitments 2

5. Instruments for the Adoption and Promotion of Environmental Commitments 3

6. Main Principles of Environmental Conduct of the Group 3

Santurtzi Combined Cycle Plant Environmental Statement for 2017

NOTICE. This document is a translation of a duly approved Spanish-language document, and is provided for informational purposes only. In the event of any discrepancy between the text of this translation and the text of the original Spanish-language document that this translation is intended to reflect, the text of the original Spanish-language document shall prevail.

Corporate Governance System / 2 16 / Environmental/ Environmental Policy Policy

The Board of Directors of IBERDROLA, S.A. (the “Company”) is vested with responsibility for formulating the strategy and approving the Corporate Policies of the Company and for organising the internal control systems. Pursuant to the Mission, Vision, and Values of the Iberdrola group, the Company’s leadership in the development of clean energy and respect for the environment are the pillars of its energy production model and the factor that distinguishes it in its industry as one of the leading companies worldwide. In the exercise of these responsibilities and in order to further develop the Company’s corporate philosophy, the Board of Directors approves this Environmental Policy. 1. Purpose The Environmental Policy is intended to extend to all stakeholders related to the Company and to the companies belonging to the group of which the Company is the controlling entity, within the meaning established by law (the “Group”), its devotion to leadership in the development of clean energy and respect for the environment. In this regard, the Company’s Board of Directors believes the environment to be a central element of the concept of sustainability, and particularly one of the three pillars for reaching a sustainable energy model, together with competitiveness and the safety of supply. The Company, aware of its potential to contribute to the preservation and protection of the environment, has voluntarily assumed the responsibility to lead the fight against climate change and to preserve biodiversity, in accordance with the provisions of the Policy against Climate Change and the Biodiversity Policy, respectively. The Company also conceives of respect for the environment as one of the corporate values that determines its entire business strategy, as it is key to the configuration of a sustainable energy model, which in the environmental dimension translates into lower emissions and greater efficiency and the production and use of energy, as well as in complying with environmental laws and regulations and the best international practices in this area. Given all of the above, through a policy of transparent information and a strategy of constant dialogue, the Company responds to the expectations of its stakeholders with respect to the preservation of the environment, ever more stringent regulatory requirements, and constant scrutiny of management by analysts, assessors, and various agents of civil society, in line with the Sustainable Development Goals (2015-2030) recently approved by the United Nations. 2. Scope of Application This Environmental Policy applies to all companies of the Group, as well as to all investees not belonging to the Group over which the Company has effective control, within the lawfully established limits. At those companies in which the Company has an interest and to which this policy does not apply, the Company will promote, through its representatives on the boards of directors of such companies, the alignment of their own policies with those of the Company. This Environmental Policy shall also apply, to the extent relevant, to the contractors acting in the name of the Company, as well as to the joint ventures, temporary joint ventures (uniones temporales de empresas), and other equivalent associations, if the Company assumes the management thereof. 3. Decentralised Environmental Organisation The management bodies of the various companies making up the Group are responsible for the determination and implementation of the Environmental Policy within the Iberdrola group, in accordance with the corporate and governance structures and the business model of the Group defined in the Policy for the Definition and Coordination of the Iberdrola Group and Foundations of Corporate Organisation. The Company has for such purposes created an organisation that manages the environment in a decentralised manner. The Board of Directors and the management team of the Company are thus responsible for establishing and supervising the application, respectively, of environmental strategy and organisation at the Group level. For its part, the Company’s Innovation, Sustainability, and Quality Division, which reports to the Area of the Office of the Chairman, proposes the management models and systems, specifies the environmental guidelines and the goals associated therewith, coordinating all environmental action of the Group. Without prejudice to the foregoing, the Energy Policies and Climate Change Division, which also reports to the Area of the Office of the Chairman, proposes the guidelines relating to the Company’s Policy against Climate Change. Finally, applying the principle of subsidiarity, specific matters affecting the business that are related to the environment are handled and resolved in each case by the environmental divisions of each business. 4. Environmental Commitments The development of clean energy, investment in smart grids and other energy efficient technologies, and respect for the environment are the pillars of the Group’s energy production model and distinguish the Company in the energy sector as one of the leading companies worldwide. The Company considers this environmental dimension as a priority in planning its businesses. This compels it to promote innovation, eco-efficiency, and the gradual reduction of environmental impacts in the activities of the Group, in order for energy to become a sustainable driver of the economy and an ally of balanced development.

NOTICE. This document is a translation of a duly approved Spanish-language document, and is provided for informational purposes only. In the event of any discrepancy between the text of this translation and the text of the original Spanish-language document that this translation is intended to reflect, the text of the original Spanish-language document shall prevail.

Take care of the environment. Printed in black and white / and Santurtzi only if necessary. Combined Cycle Plant Environmental Statement for 2017 2 / Environmental Policy EnvironmentalEnvironmental Policy Policy / 17 / 3

The Board of Directors of IBERDROLA, S.A. (the “Company”) is vested with responsibility for formulating the strategy and appro- Accordingly, aware of the importance of this factor in carrying out its corporate mission for its customers and shareholders and ving the Corporate Policies of the Company and for organising the internal control systems. Pursuant to the Mission, Vision, and for other significant stakeholders with whom it interacts, the Company and the companies belonging to the Group undertake to Values of the Iberdrola group, the Company’s leadership in the development of clean energy and respect for the environment promote innovation in this field and eco-efficiency (reduction of the environmental impact per production unit), i.e. to gradually are the pillars of its energy production model and the factor that distinguishes it in its industry as one of the leading companies reduce the environmental impacts of their activities, facilities, products, and services, as well as to offer, promote, and investiga- worldwide. In the exercise of these responsibilities and in order to further develop the Company’s corporate philosophy, the te eco-efficient solutions within their market, thus harmonizing the conduct of their activities with the legitimate right of current Board of Directors approves this Environmental Policy. and future generations to enjoy an adequate environment. 1. Purpose Along these lines, the Policy against Climate Change includes a specific goal of gradually reducing the intensity of greenhouse gas emissions. The Environmental Policy is intended to extend to all stakeholders related to the Company and to the companies belonging to The Group also optimises the management of water and hazardous and non-hazardous waste through systems that set objec- the group of which the Company is the controlling entity, within the meaning established by law (the “Group”), its devotion to tives and goals on, among other aspects, waste reduction, the use of best practices in water usage, and the use of recycled leadership in the development of clean energy and respect for the environment. materials. In this regard, the Company’s Board of Directors believes the environment to be a central element of the concept of sustainability, and particularly one of the three pillars for reaching a sustainable energy model, together with competitiveness and the 5. Instruments for the Adoption and Promotion of Environmental Commitments safety of supply. The environmental commitments of the Group are promoted through: The Company, aware of its potential to contribute to the preservation and protection of the environment, has voluntarily assu- a) An organizational structure with clearly defined responsibilities in connection with the environment and sustainability in med the responsibility to lead the fight against climate change and to preserve biodiversity, in accordance with the provisions general, which is decentralised and based on the principle of subsidiarity. of the Policy against Climate Change and the Biodiversity Policy, respectively. b) This Environmental Policy and other specific policies relating to significant specific aspects, such as biodiversity and climate The Company also conceives of respect for the environment as one of the corporate values that determines its entire business change. strategy, as it is key to the configuration of a sustainable energy model, which in the environmental dimension translates into c) The consideration of the environmental variable in risk control and management policies. lower emissions and greater efficiency and the production and use of energy, as well as in complying with environmental laws d) A global environmental management system, which allows for a reduction in environmental risks, improving the management and regulations and the best international practices in this area. of resources and optimising investments and costs. Given all of the above, through a policy of transparent information and a strategy of constant dialogue, the Company responds e) The funding of specific budgets. to the expectations of its stakeholders with respect to the preservation of the environment, ever more stringent regulatory re- f) The periodic preparation of specific strategic plans that determine strategic priorities and key matters relating to the envi- quirements, and constant scrutiny of management by analysts, assessors, and various agents of civil society, in line with the ronment. Sustainable Development Goals (2015-2030) recently approved by the United Nations. g) The establishment of specific and verifiable environmental goals. 2. Scope of Application h) Training of and provision of information to officers and employees. i) Collaboration with suppliers so that respect for the environment is a principle informing the entire value production chain of This Environmental Policy applies to all companies of the Group, as well as to all investees not belonging to the Group over which the Group. the Company has effective control, within the lawfully established limits. j) Participation in international initiatives, ratings, and indices relating to sustainability and the environment. At those companies in which the Company has an interest and to which this policy does not apply, the Company will promote, All of the foregoing such that the various levels of the organisation are aware of the importance of respect for the environment through its representatives on the boards of directors of such companies, the alignment of their own policies with those of the in the planning and subsequent implementation of all the actions of the Company, and that all employees contribute with their Company. daily work to the achievement of the goals set in this field. This Environmental Policy shall also apply, to the extent relevant, to the contractors acting in the name of the Company, as well as to the joint ventures, temporary joint ventures (uniones temporales de empresas), and other equivalent associations, if the 6. Main Principles of Environmental Conduct of the Group Company assumes the management thereof. To achieve the implementation of these commitments, the Group shall be guided by the following main principles of conduct: 3. Decentralised Environmental Organisation a) Respect applicable environmental laws and regulations in the countries in which it operates and, to the extent possible, anti- cipate the application of new legal provisions when more stringent, and comply with voluntarily assumed commitments and The management bodies of the various companies making up the Group are responsible for the determination and implementa- with international rules of environmental conduct, particularly when they are more ambitious. tion of the Environmental Policy within the Iberdrola group, in accordance with the corporate and governance structures and the b) Know and assess the environmental risk of production facilities on an ongoing basis, and constantly improve and update the business model of the Group defined in the Policy for the Definition and Coordination of the Iberdrola Group and Foundations mechanisms designed to mitigate or eradicate them. of Corporate Organisation. c) Establish indicators and reporting systems that allow for knowing and objectively comparing the environmental impact of The Company has for such purposes created an organisation that manages the environment in a decentralised manner. the various activities of the Group, classifying them and allowing for the traceability thereof, in order to be able to use such The Board of Directors and the management team of the Company are thus responsible for establishing and supervising the information efficiently in the decision-making process of the businesses of the Group. application, respectively, of environmental strategy and organisation at the Group level. d) Prevent the occurrence of such risks and, if appropriate, mitigate the consequences of such occurrence, including, when For its part, the Company’s Innovation, Sustainability, and Quality Division, which reports to the Area of the Office of the deemed appropriate, the provision of financial guarantees. Chairman, proposes the management models and systems, specifies the environmental guidelines and the goals associated e) Integrate fully the environmental dimension and respect for the natural environment into the strategy of the Group. therewith, coordinating all environmental action of the Group. Without prejudice to the foregoing, the Energy Policies and f) Ensure at all times the compatibility of environmental protection, the meeting of social needs in the energy arena, and the Climate Change Division, which also reports to the Area of the Office of the Chairman, proposes the guidelines relating to the sustainable creation of value through innovation and eco-efficiency, contributing to a sustainable and responsible energy Company’s Policy against Climate Change. model. Finally, applying the principle of subsidiarity, specific matters affecting the business that are related to the environment are g) Consume responsibly, making sustainable use of resources and increasing consumption of renewable resources to the extent handled and resolved in each case by the environmental divisions of each business. possible. 4. Environmental Commitments h) Incorporate the environmental dimension into investment decision processes and the planning and carrying out of activities, The development of clean energy, investment in smart grids and other energy efficient technologies, and respect for the envi- promoting the consideration thereof in cost-benefit analyses. ronment are the pillars of the Group’s energy production model and distinguish the Company in the energy sector as one of the i) Establish appropriate management systems, based on a philosophy of ongoing improvement, that help to reduce environ- leading companies worldwide. mental risk and that include: The Company considers this environmental dimension as a priority in planning its businesses. This compels it to promote inno- 1. Ongoing efforts to identify, assess, and reduce the adverse environmental effects of the activities, facilities, products, vation, eco-efficiency, and the gradual reduction of environmental impacts in the activities of the Group, in order for energy to and services of the Group. become a sustainable driver of the economy and an ally of balanced development. 2. Provision of information to and training of employees on the effects of the development of the Group’s processes and products to minimise the detrimental effects of its activities on their health and on the environment.

NOTICE. This document is a translation of a duly approved Spanish-language document, and is provided for informational purposes only. In the event of any discrepancy between the NOTICE. This document is a translation of a duly approved Spanish-language document, and is provided for informational purposes only. In the event of any discrepancy between the text of this translation and the text of the original Spanish-language document that this translation is intended to reflect, the text of the original Spanish-language document shall prevail. text of this translation and the text of the original Spanish-language document that this translation is intended to reflect, the text of the original Spanish-language document shall prevail.

Take care of the environment. Printed in black and white and only if necessary. Santurtzi Combined Cycle Plant EnvironmentalCorporate Governance Statement Systemfor 2017 / 4 18 / Environmental/ Environmental Policy Policy

3. Development of plans and programmes setting objectives and goals and updating of emergency plans that will make it possible to reduce risks, minimise adverse environmental effects, and regularly monitor the progress and effectiveness of the measures applied, fostering the ongoing improvement of the Group’s processes and practices. 4. Carry out monitoring, measurement, and, if appropriate, corrective activities. 5. Performance of internal and external audits. j) Identify and incorporate available technical improvements for the production and distribution of electric power from a technical financial, environmental, and social standpoint. k) Respect nature, biodiversity, and the historical and artistic heritage in the natural environment where the Group’s facilities are located. l) Foster research and development of new technologies and processes that help to address climate change and other environmental challenges with a preventive approach and allow for a more efficient use of natural resources to progress towards a more sustainable energy model, including electric mobility. m) Promote behaviour of the Group that is in line with the principles of this Environmental Policy, assigning positive value to alignment therewith, particularly in the selection of contractors and suppliers. n) Establish a constructive dialogue with Government Agencies, regulatory authorities, non-governmental organisations, multi- lateral agencies, shareholders, customers, local communities, and other stakeholders in order to: 1. Mutually understand the interests and objectives of each of the parties. 2. Work jointly in the search for solutions to environmental problems and dilemmas. 3. Contribute to the development of a useful public policy from the environmental standpoint that is efficient in economic terms. 4. Raise awareness of the importance of taking measures to reduce greenhouse gas emissions. o) Report transparently on environmental results and actions, establishing the appropriate channels to favour communication with the stakeholders and recognizing both achievements and aspects that need to be improved. p) Share acquired knowledge with their customers in order to improve their environmental behaviour in connection with energy. q) Support legal measures, initiatives and innovations focused on permitting greater electrification of consumer uses of the economy, like electric cars and trains, heat pumps, etc. as an effective and efficient vector of the fight against climate change due to the de-carbonisation that they engender.

This Environmental Policy was initially approved by the Board of Directors on 18 December 2007 and was last amended on 6 April 2016.

Figure 4: Iberdrola environmental policy valid since 6 April 2016

NOTICE. This document is a translation of a duly approved Spanish-language document, and is provided for informational purposes only. In the event of any discrepancy between the text of this translation and the text of the original Spanish-language document that this translation is intended to reflect, the text of the original Spanish-language document shall prevail.

Take care of the environment. Printed in black and white / and Santurtzi only if necessary. Combined Cycle Plant Environmental Statement for 2017 4 / Environmental Policy Environmental Policy / 19

This Environmental Policy was initially approved by the Board of Directors on 18 December 2007 and was last amended on 6 April 2016.

NOTICE. This document is a translation of a duly approved Spanish-language document, and is provided for informational purposes only. In the event of any discrepancy between the text of this translation and the text of the original Spanish-language document that this translation is intended to reflect, the text of the original Spanish-language document shall prevail.

Take care of the environment. Printed in black and white and only if necessary. Santurtzi Combined Cycle Plant Environmental Statement for 2017 20 / Environmental Aspects

5 Environmental Aspects

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5.1

Identification of Environmental Aspects The SANTURTZI C.C.P. has a related series of environmental aspects, defined as those elements of its activities, products or services that may affect the environment. These environmental impacts include any change to the environment—whether damaging or beneficial—caused totally or partially by the activities carried out at the SANTURTZI C.C.P. Significant aspects are considered to be those that have or could have a significant impact on the environment. The SANTURTZI C.C.P. has identified a series of direct environmental impacts, namely those that havea direct influence on management, under normal operating conditions and in emergency situations. The consideration of indirect environmental aspects is given to those over which a reasonable degree of influence can be exercised, but which cannot be completely controlled. At the SANTURTZI C.C.P., environmental aspects are identified and reviewed whenever any of the following circumstances occurs: • Introduction of new legal or regulatory requirements. • Design changes or new operational methods. • Implementation, modification, or shutdown of any activity, project or process. • Change in the nature of raw materials. • Occurrence of an environmental event or incident. Similarly, environmental aspects are reviewed annually even if none of the preceding circumstances occur.

5.2

Evaluation of Environmental Aspects A review has been carried out on all environmental aspects in the 2017 period, applying procedure 2000-CC1- PG-017 “Environmental Aspects” of the SIGEC for thermal generation. For each of the situations identified in the previous section, different assessment methodologies have been established, with a hierarchical system defined for classifying environmental aspects as significant or not significant. Some of the objectives of the Environmental Management Programme are established according to this hierarchical classification.

5.2.1 Evaluation of environmental aspects under normal and emergency conditions

The following shows the evaluation method of the environmental aspects in a normal and emergency situation.

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VALUE 10 5 2

Air emissions of SO2, NOx, CO2 air emissions. Diffuse emissions from particles, CO, heavy metals, landfills VOCs, dioxins and furanes, HCl and HF. Fugitive emissions due to fire/ - - explosion Discharges of processing water Closed-cycle refrigeration and Open-cycle refrigeration and water from hydrocarbon sanitary discharges and landfill discharges and coal separators. leachates storage yard runoff. The discharge of contaminants Fire extinction water - due to fire/explosion or from loading/unloading, transfer and storage. Hazardous waste Non-hazardous waste Domestic waste

HARMFULNESS - Waste generated due to fire/ - CRITERIA explosion Consumption of fuel/materials Electricity consumption Water consumption and chemical products

Chemical products consumption. - Water consumption

- Night-time noise emission Daytime noise emission

- - Noise emission due to fire/ explosion Contaminated groundwater Land occupancy - discharge Discharge of contaminants due to - - fire or explosion, or from loading/ unloading, transfer and storage.

VALUE 30 20 110 ≥ 90% of the maximum Between ≥ 75% and < 90% of < 75% of the maximum amount QUANTITY amount the maximum amount CRITERIA One or more incidents - No incidents

VALUE 10 6 4 2 Daily or continuous Monthly (once or more Annual (once or more Indeterminate DURATION per month but less than per year but less than regularity CRITERIA daily) monthly)

VALUE -10 -5 -2 0 There are There are two of the There is one of the There are no BARRIER technological, three: technological, three: technological, technological, CRITERIA measurement and measurement and/or measurement and measurement or alarm alarm barriers. alarm barriers. alarm barriers. barriers.

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VALUE 10 5 2 Air emissions and noise levels Air emissions and noise levels Air emissions and noise levels in an urban area or area of in an urban area or area of in an urban area or area of ecological interest ≤ 2 km ecological interest between >2 ecological interest >10 km away. km and ≤10 km away away Discharges into rivers and Discharges into the sea Discharges into a municipal reservoirs sewer/treatment plant ≥70% of the total waste ≥30% to <70% of the total <30% of the total waste supplied for elimination or waste supplied for elimination supplied for elimination or deposit in a landfill or deposit in a landfill deposit in a landfill Waste generated by fire/ MEASUREMENT explosion SENSITIVITY CRITERIA Consumption of fuel and Consumption of electricity and Consumption of water from materials, chemical products, sea water the municipal network groundwater and water from rivers and reservoirs Discharges of soil or Discharges into the ground Land occupancy gravel into the ground and and groundwater in tarmac, groundwater in green areas concrete and waterproofed areas. Landfill ≤2 km from an area of Landfill >2 km to ≤10 km from Landfill >10 km from an area of ecological interest an area of ecological interest ecological interest

Table 1: Criteria in the evaluation of environmental aspects in normal and emergency situations

For each environmental aspect, the previously-mentioned criteria are assessed and added. Significant aspects are deemed to be those that score 40 points or more, or those which have passed the established Integrated Environmental Authorisation limits or other currently applicable legislation. If there are no significant aspects, the first five from each area with the highest evaluation will be chosen, in normal and emergency situations, with a view to proposing action to decrease their score.

The result of this evaluation of Environmental Aspects at the SANTURTZI C.C.P. is as follows:

5.2.1.1 Evaluation of environmental aspects under normal conditions

The following table includes the 5 highest-scoring environmental aspects in 2016 that were significant under normal conditions and evaluated at the beginning of 2018, using data from 2017:

EVALUATION OF ASPECTS, 2016

Aspect Impact ∑ Those specific to its management and Generation of Non-hazardous Waste 46 treatment. Those specific to its management and Domestic Waste Generation 44 treatment. Those specific to its management and Generation of Hazardous Waste 36 (Negligible) treatment. Fuel and Material Consumption Depletion of natural resources 34 (Negligible)

Consumption of Chemicals Depletion of natural resources 34 (Negligible)

Santurtzi Combined Cycle Plant Environmental Statement for 2017 24 / Environmental Aspects

EVALUATION OF ASPECTS, 2017

Aspect Impact ∑ Fuel and Material Consumption Depletion of natural resources 54

Consumption of Chemicals Depletion of natural resources 54 Those specific to its management and Generation of Non-hazardous Waste 46 treatment. Water consumption Depletion of natural resources 42

Electricity consumption Depletion of natural resources 40

Table 2: Changes in significant environmental aspects under normal conditions, 2016-2017

Due to operation, the consumption of fuel and chemical products increased significantly in 2017. In 2017, the aspect associated with domestic waste generation ceased to be significant due to the reduction of the amount of paper and card generated compared to that generated in 2016, resulting from the removal and destruction of all documentation that year.

5.2.1.2 Environmental aspects under emergency conditions Both the evaluation of the environmental aspects under emergency conditions carried out in 2016, as well as that carried out during the first quarter of 2018, did not identify any significant aspects and therefore the highest-scoring have been used. EVALUATION OF ASPECTS, 2016

Aspect Impact ∑ Fugitive air emissions due to fire/ Alteration to the physical/chemical quality of 32 explosion the air and greenhouse gas generation Consumption of fire-extinguishing Depletion of natural resources 32 chemical products Discharges into water of contaminants Alteration in the physical/chemical quality of during loading/unloading/transfer/ 25 the water storage Discharges of contaminants to the ground Alteration to the physical/chemical quality of during loading/unloading/transfer/ 25 the ground and groundwater storage Consumption of fire-fighting water Depletion of natural resources 24

Noise emission due to fire/explosion Depletion of natural resources 24

EVALUATION OF ASPECTS, 2017

Aspect Impact ∑ Alteration to the physical/chemical quality of Fugitive air emissions due to fire/explosion 32 the air and greenhouse gas generation Consumption of fire-extinguishing Depletion of natural resources 32 chemical products Discharges of contaminants to the ground Alteration to the physical/chemical quality of during loading/unloading/transfer/ 25 the ground and groundwater storage Consumption of fire-fighting water Depletion of natural resources 24

Noise emission due to fire/explosion Depletion of natural resources 24

Table 3: Changes to the highest-scoring environmental aspects under emergency conditions 2016 - 2017

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Environmental Aspects / 25

During 2017, a new cut-off valve was installed on the overflow pipe of the +9 Level reservoir, creating a new barrier with regard to discharges under emergency conditions, thus reducing the significance of the aspect ‘Discharge of contaminants during loading/unloading/transfer/storage’ which is no longer among the highest-scoring.

5.2.2 Evaluation of indirect environmental aspects The following shows the evaluation method of the indirect environmental aspects.

VALUE 3 1 Smoke emission from vehicle fires, fuel Dust emissions from transport, natural gas leakage emissions from transport Discharges into water of transported Discharges into water of transported solids liquids - Noise derived from transport HARMFULNESS Fuel consumption during transport Transport container and packaging consumption Waste from vehicle spills or fires - Discharges to ground of transported Discharges to ground of transported solids liquids

VALUE 8 4 2 1 Daily or Monthly Annually Indeterminate FREQUENCY continuous (once or more per (once or more per year regularity month) but less than monthly)

VALUE 4 1 High Low PROBABILITY (certain to occur) (occurs occasionally)

VALUE 4 2 1 The company offers no The company has confirmed it The company holds the ENVIRONMENTAL environmental training. meets IBERDROLA environmental ISO 14001 certificate TRAINING CONTRACTOR requirements. or is listed on the EMAS register. Table 4: Criteria for the assessment of indirect environmental aspects For each indirect environmental aspect identified, the aforementioned criteria are assessed and added. When assessing aspects to which a number of values can be applied, the most restrictive should always be taken. Significant aspects are deemed to be those that score 15 points or more. If none obtain this score, the first five with the highest score will be chosen. The result of this evaluation of Indirect Environmental Aspects at the SANTURTZI C.C.P. is as follows: In the case of indirect environmental aspects, no changes have occurred when compared with the assessment carried out in the preceding period. As there is no significant aspect, those with the highest score are:

Evaluation of aspects data from 2016 and 2017

Aspect Impact ∑ Air emissions from combustion in Alteration to the physical/chemical quality of the air 13 transportation and greenhouse gas generation Fuel consumption in transport Depletion of natural resources 13

Air emissions due to natural gas leakage Generation of greenhouse gases 12 Dust emissions in transport Alteration in the physical/chemical quality of the air 11

Container and packaging consumption Depletion of natural resources 11

Transportation vehicle noise Increase in the noise level 11

Table 5: Highest-scoring indirect environmental aspects 2016 - 2017

Santurtzi Combined Cycle Plant Environmental Statement for 2017 26 / Environmental Management Programme

6 Environmental Management Programme

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Annually and based on the general target set by Generación Térmica, SANTURTZI C.C.P.through COCAL, which involves the managers from the various departments of the plant's organisational structure and in which all employees are represented, draws up an Environmental Management Programme that includes the specific goals and targets for the facility, the planned activity schedule, the parties responsible for the actions that are planned, and the human and financial resources to execute the planned actions. In order to establish the objectives and goals, the significant environmental aspects and the applicable legal requirements, as well as other criteria, are taken into account. The assessment of the 2017 objectives is favourable. All the set objectives were met. The plant continues to work to improve its environmental aspects, adapting its goals and targets to current circumstances. The last follow-up performed in 2017 is detailed below, including all actions carried out as well as the degree of compliance with each objective evidencing the plant’s environmental behaviour. OBJECTIVE: Continue to apply continuous improvement in minimising the environmental impact, through the SEARCH and EXECUTION of actions aimed at reducing the environmental impact. In order to achieve this, comply with the 2017 ENVIRONMENTAL IMPROVEMENT PLAN.

RESOURCES RELATED ANTICIPATED ACTUAL ENVIRONMEN- INITIAL SIT- FINAL FINAL ECONOM- HUMAN TAL TARGETS INDICATOR UATION SITUATION SITUATION IC (€M) (HH) ASPECT Perform at least 1 % Target 0 % 100% 100% 0 20 Discharges practical simulation, Achieved to water in independent from emergency corporate safety, of situations an environmental emergency at the plant. Carry out at least 2 % Target 0 % 100% 100% 0 50 Discharges environmental training Achieved to water in sessions emergency situations Preparation of project to % Target 0 % 100% 100% 6.00 200 Discharge of adapt land at old boiler Achieved contaminated area substances into ground Installation of cut-off Accomplished 80 % 100% 100% 12.00 50 Emergency valve in Level 9 reservoir

The target has been achieved: the target of at least 95% progress in ENVIRONMENTAL actions defined in the 2017 ENVIRONMENTAL ACTIONS PLAN has been achieved. A level of fulfilment of 100% has been attained. All targets have been met in full.

Santurtzi Combined Cycle Plant Environmental Statement for 2017 28 / Environmental Indicators

7 Environmental Indicators

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The SANTURTZI C.C.P. carries out a review of its environmental performance, in order to assess its compliance with current legislation that applies to it, as well as of its Environmental Management Programme. In general terms, the SANTURTZI C.C.P. situation from 2006 to 2017 can be summarised in the following sections. These involve monitoring the indicators significant to the organisation, making it possible to quantify and notify their environmental behaviour and perform annual comparisons of the data. In order to calculate the basic indicators included in Annex IV to EC Regulation No. 1221/2009, the gross production unit has been used as figure B to adapt them to the organisation's activity, gross electricity production, given in MWh. Electricity was produced during the last quarter of 2017 with 31 start-ups, and therefore an increase in specific emissions has been observed.

7. 1

Emissions into the Atmosphere SANTURTZI C.C.P. has identified gas emissions deriving from combustion in its gas turbine as an environmental aspect.

The Combined Cycle plant monitors the emission of sulphur dioxide (SO2), nitrogen oxides (NOX), particulate and carbon monoxide (CO). The limits imposed on these are stipulated in the Integrated Environmental Authorisation (IEA).

SO2, NOX, CO, and particles are monitored constantly using two automatic gauges installed in parallel in the chimney, and the signal from one of them is sent to the plant control panel. This prevents loss of data during maintenance work or when one of the units malfunctions. These gauges are checked and calibrated regularly in order to ensure that they work properly. The monthly emission reports, as well as the calibration certificates for the metering equipment, are sent to the competent authorities.

CO2 emissions are calculated monthly on the basis of fuel consumption (according to the specific procedure "Monitoring and notification of greenhouse gas emissions"). These are verified by an accredited body and sent to the Department of the Environment and Regional Planning of the Vice-Ministry for the Environment of the Basque Government.

SANTURTZI C.C.P. also calculates the emission of CH4 and N2O, also based on fuel consumption. During

2017, the emission of CH4 and N2O, expressed in equivalent tonnes of CO2, represented 0.04 and 0.05 %, respectively of the plant's total greenhouse gas emissions, as shown in Section 7.1.4.

As far as other greenhouse gases are concerned, such as HFC, PFC and SF6, the first two can be found in air-conditioning units and fire-fighting equipment and SF6 can be found in high-voltage electrical equipment, which is checked for leaks in accordance with current legislation. In 2017 there was a leak of 7.5 kg of R-407C

gas, the equivalent of 13.3 t of CO2. 1 The following graphs show the total PAI emission (tonnes) of the parameters for SO2, NOX and particles and greenhouse gas emissions for the 2006-2017 period.

1 PAI are the reporting periods according to the Order PRA/321/2017, of 7 April, which regulates the procedures for determining the emission of atmospheric pollutants SO2, NOx and particles coming from large combustion plants, the control of measurement and treatment equipment, and the processing and reporting of information on said emissions.

Santurtzi Combined Cycle Plant Environmental Statement for 2017 30 / Environmental Indicators

7.1.1 SO2 Emissions Emissions - 2006-2017

PAI SO2 emissions (t)* SO2 emissions (t/MWh)* 3.90 4.00 1.00E-05 9.22E-06 6.66E-06 2.95 5.47E-06 7.17E-06

2.00 5.00E-06 4.10E-06 1.40 1.27 1.30 3.13E-06 2.07E-06 1.29E-06 0.25 0.27 0.03 0 0.01 0 0 0 3.8E-07 00 0 0.00E+00 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 * Annual change SO2

The modification of the 2015 Integrated Environmental Authorisation does not set a legal limit for SO2 natural gas fuel emissions.

7.1.2 NOx Emissions NOx emissions - 2006-2017

Total Emissions PAI NOx (t)* NOx emissions (t/MWh)*

250 2.50E-04 213.39 2.05E-04 2.00E-04 1.76E-04 167.60 1.69E-04 1.37E-04 1.50E-04 1.50E-04 1.31E-04 1.24E-04 1.17E-04 125 8,49E-05 91.90 85.48 1.00E-04 6.60E-05 66.47

31.29 5.00E-05 0.72 28.90 0 8.42 0.013 0 0 00 0 0.00E+00 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 * Annual change NOx

It should be noted that whilst operating in 2017, the specific emissions of NOx increased compared to previous years due to the number of start-ups and stoppages that took place in relation to the number of operating hours.

7.1.3 Particulate Emissions Due to the absence of particles in the emissions from natural gas combustion, the Integrated Environmental Authorisation does not establish a legal maximum value for particles for this fuel. The controls for the 2006- 2017 period show no emission of particles: 0 tonnes of total emission and therefore, 0 tonnes emitted per unit of gross energy produced.

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Environmental Indicators / 31

7.1.4 Greenhouse Gas Emissions

Below follows the emission of greenhouse gases. The values shown of equivalent t of CO2 correspond to the 2 3 sum of CO2 +N2O+CH4 + fluoride gases. Greenhouse gas emissions - 2006-2017

Greenhouse gas emissions* Greenhouse gas emissions* (equivalent t of CO2) CO2 (t) 5 556 65 66 65 5 5 6

5. 5 6 55. .6 55 20072006 2008 200 20172016201520142013201220112010 20072006 2008 200 20172016201520142013201220112010

Greenhouse gas emissions: CH4 and N2O * (equivalent t of CO2)

4,000 6

2,000

5 6 5 6 . . . 5 5 5 . . .5 0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

2 C4 Greenhouse gas emissions* (equivalent t of CO2 / MWh)

0.800 .

. . . . . . . . .6 0.400

. . 0.000 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 *Annual change

2 CO2 emissions are calculated in accordance with Regulation (EU) 601/2012. 3 CH4 and N2O have been calculated based on the plant's fuel consumption for each natural year applying the emission factors contained in the document “Emission Calculation Methodologies”, recorded in the latest National Atmospheric Emissions Inventory: Thermoelectric Power Plant Sector, published by the Ministry of the Environment. The tonnes of CH4 and N2O calculated are converted into equivalent tonnes of CO2 (CO2e for a time horizon of 100 years) using the atmospheric heating potentials published by the Intergov- ernmental Group for Climate Change in the Directives of the IPCC for the national greenhouse gas inventories (IPCC Fourth Assessment Report: Climate Change 2007 (AR4).

Santurtzi Combined Cycle Plant Environmental Statement for 2017 32 / Environmental Indicators

7. 2

Discharges The SANTURTZI C.C.P. periodically monitors its discharges to ensure that the limits set in its Integrated Environmental Authorisation are not exceeded at any time. The discharges of the combined cycle process are processed in the installation’s effluent treatment plant (V1). The plant bases its operation on a physical-chemical purification process: effluent pH adjustment and elimination of solids in suspension by coagulation-flocculation, a process by which sludge is extracted, then dried and sent to the waste manager. The wastewater (V2) is treated in three biological purifiers located at different points on the facility. Finally, discharges from water potentially contaminated with hydrocarbons (V3) are treated by a separation and filtration process before discharge. Finally, the discharge of the open circuit cooling waters (V4), which uses seawater, is returned directly into the sea via a discharge mechanism that continually checks for the presence of free chlorine and for increases in temperature. This is discharged together with the remaining effluents at Discharge Point (PV1). The site has one single authorised discharge point through which all its effluent is passed. This is located in the outer sea wall of the outer dock of the port of Bilbao. This is shown in the following pictures:

Figures 5 and 6: SANTURTZI C.C.P. discharge and control points

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The following shows the total discharge volume and the volumes of the four different discharges ofSANTURTZI C.C.P. in 2006-2017: Discharge - 2006-2017

Total discharge Total discharge/Electricity production* (m3) (m3/MWh)

Mill. Miles 56 66 200 1.6 65 5665 5.

556 100 0.8

65 5. . . . 655 6 5.5 . 65. . 65 65 6.5 . . 0 0 20072006 2008 200 20172016201520142013201220112010 20072006 2008 200 20172016201520142013201220112010

V1 Industrial Water* Indicator V1/Electricity Production (m3) (m3/MWh)

Miles

40 200 .5 6 5 100 20

55 665 5 6 . .6 . .5 .5 . .6 .6 . 0 0 20072006 2008 200 20172016201520142013201220112010 20072006 2008 200 20172016201520142013201220112010

V2 - Waste water* V2 Indicator/Electricity Production* (m3) (m3/MWh)

5,000 1.00 . 66

2,500 0.5

56 66 . .6 . . . . . 0 0 2010 2011 2012 2013 2014 2015 2016 2017 2010 2011 2012 2013 2014 2015 2016 2017

V3 - Fuel Handling Area Water* Indicator V3/Electricity Production* (m3) (m3/MWh)

Miles

600 60.0 .

556 300 30.0 5 6 5 65 . 56 5 . . . . . .5 . . . 0 0.0 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

Santurtzi Combined Cycle Plant Environmental Statement for 2017 34 / Environmental Indicators

V4 - Unit 4 Cooling Water* V4 Indicator/Electricity Production* (m3) (m3/MWh)

Mill. Miles 5 200 1.6 56 . 555

66 100 0.8

65 .6 . 5. .6 6. 65 6 566 5. 6. 65 .6 . 65 . . 0 0 20072006 2008 200 20172016201520142013201220112010 20072006 2008 200 20172016201520142013201220112010

*Annual change The results of the analysis on existing discharges performed in 2017 by URIKER, the entity that works with the administration, is as follows:

V1 - Industrial Water, Effluent Treatment Plant LIMIT 2017

PARAMETERS UNIT Value JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC

pH - 5.5 – 9.5 7. 47 7.36 8 7. 76 7. 7 8.39 8.91 8.48 7.98 7. 9 8 7. 6

Suspended solids mg/l 80 4 4 4 5.2 4 5.6 14 3.3 16 5.6 3.8 3.2

Sedimentary solids mg/l 0.5 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1

mg COD 160 23.6 12.3 10 10 10 11.7 56 29.9 87 36 30 10 O2/l Ammonium mg/l 15 1 2.07 1 1 1 1 1 1.3 1 1.8 1.2 1

A & G floating Absence abs abs abs abs abs abs abs abs abs abs abs abs

A & G emulsified mg/l 20 2 4 4 5.8 4 2 2 8.7 15.8 2 4.2 13.4

HC totals mg/l 15 2 4 2 2 2 2 2 2 2.7 2 2 2

P total mg P/l 10 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.11 0.1 0.1 0.01

Fe mg/l 2 0.048 0.06 0.123 0.23 0.038 0.061 0.273 0.196 0.7 0.1 0.56 0.16

Cu mg/l 0.2 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.01 0.01 0.0023

Flow rate (m3/ m3 - 1900 1860 2180 970 1170 1100 440 950 1390 3090 11590 6530 month)

Table 6: Industrial Water Discharge Analysis

V2 - Wastewater LIMIT 2017 PARAMETERS UNIT Value 1st Quarter 2nd Quarter 3rd Quarter 4th Quarter EDAR 2.1 2.2 2.3 2.1 2.2 2.3 2.1 2.2 2.3 2.1 2.2 2.3 pH - 5.5 – 9.5 8 7 8 7. 59 7.53 7.29 7.16 7.56 7.46 7. 4 7 7. 6 Suspended solids mg/l 80 9.6 4.4 4 10.4 5.6 4 10.4 6.4 2.2 21 26 2

COD mg O2/l 160 43.9 20.7 10 47. 5 19.8 10 46.4 29.8 16 100 110 26 DBO5 mg/l 40 9.7 7 7 8.5 7 7 11 7 7 15.4 7 7 A & G emulsified mg/l 20 4 4 4 2.7 2 2 2 2 2 3.3 4.1 2 Detergents mg/l 2 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

Table 7: Analysis of Wastewater Discharge

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V3 - Fuel Handling Area Water

LIMIT 2017 Val- PARAMETERS UNIT ue JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC HC totals mg/l 15 2 4 2 2 2 2 2 2 2 2 2 2

Table 8: Fuel Management Area Discharge Analysis

V4 - Unit 4 Cooling Water 1st half of the year 2nd half of the year PARAMETERS Units LIMIT Incoming-outgoing Input. Output O-I AOX mg Cl-Cl2/l 0.15 214 <175 0 COD mg/l There has been no <454 <454 0 Total phosphorous mg/l 3 operation <0.2 <0.2 0 Zinc mg/l Absence <0.1 <0.1 0

Table 9: Refrigeration Water Discharge Analysis

In the first half of 2017 there was no operation of the unit, and therefore no analyses were conducted of the Cooling Water. The unit was in operation during the second half of the year. The results of the analyses performed on the cooling water inflow and outflow show that there have been no discharges of contaminants into the sea. The values analyses for all parameters are within the legal limits established in the Integrated Environmental Authorisation.

Santurtzi Combined Cycle Plant Environmental Statement for 2017 36 / Environmental Indicators

7. 3

Waste generation SANTURTZI C.C.P. generates hazardous and non-hazardous waste as a result of its activity. No legal non- compliance was detected regarding waste management in the verifications established in the Environmental Management System. The following table describes the tonnes of hazardous waste generated by the site during the 2006-2017 period:

TYPE HAZARDOUS WASTE (t) 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 Absorbent materials and textiles 8.57 3.224 3.978 2.538 1.895 1.552 1.381 0.29 0.289 0.489 0.240 0.442 contaminated with hydrocarbons

Absorbent materials and textiles 0.25 1.159 0.109 0.00 0.00 0.00 0.00 0.00 0.055 0.00 0.078 0.247 contaminated with paint Chlorinated hydraulic oil 0 0.063 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Used oil 3.62 4.035 6.448 1.911 0.00 0.567 0.355 0.363 1.203 0.785 0.437 0.625

Oil-contaminated water and sludge 8.33 1.574 0.29 0.207 0.00 0.719 0.00 0.00 0.00 0.00 0.00 0.00

Lead batteries 14.22 0.00 0.16 0.471 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Ni-Cd batteries 0 0.00 0.58 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Halogenated solvent 0 0.263 0.00 0.112 0.00 0.00 0.00 0.151 0.00 0.00 0.00 0.00

Water-oil emulsion 4.58 0.388 0.565 0.591 0.28 1.114 0.168 0.00 1.933 0.180 0.00 0.00

Glass containers contaminated with 0 0.00 0.094 0.00 0.00 0.00 0.085 0.00 0.00 0.077 0.064 0.090 hazardous substances Metal containers contaminated with 0.13 0.262 0.133 0.087 0.00 0.00 0.12 0.133 0.093 0.114 0.00 0.00 hazardous substances

Plastic containers contaminated with 0.21 0.306 0.127 0.058 0.045 0.00 0.06 0.047 0.063 0.130 0.00 0.115 hazardous substances

Diesel oil 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.335 0.00 0.00

Aqueous mud from filtration plant 74.78 23.58 0.00 0.00 0.00 0.00 0.00 0.00 0.00 16.320 0.00 0.00

Sludge from on-site effluent treatment 220.2 51.58 52.66 12.92 4.88 2.88 4.8 0.00 0.00 0.00 0.00 0.00

Monitors, electrical and electronic 0 0.00 0.103 0.123 0.1 0.00 0.00 0.00 0.00 0.105 0.00 0.00 equipment Discarded chemicals 0 0.00 0.173 0.00 0.00 0.00 0.00 0.536 0.066 0.161 0.760 0.892

Resins from ionic exchange 0 0.677 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.080 0.260 1.080

Type II bio-sanitary waste 0 0.001 0.001 0.001 0.00 0.00 0.0065 0.00 0.00 0.00 0.00 0.00

Fluorescent tubes 0.14 0.285 0.195 0.18 0.21 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Materials contaminated with sewage 0 0.00 3.422 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sludge Aerosols 0 0.00 0.00 0.055 0.00 0.045 0.00 0.051 0.00 0.00 0.053 0.00

Heavy grease 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.200 0.00

Mercury batteries 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.001 0.00

TOTAL 335.03 87.397 69.038 19.254 7. 4 1 6.877 6.970 1.571 3.702 18.776 2.093 3.491

Table 10: Hazardous waste generation

It has been observed that during 2017 there has been an increase in the production of hazardous waste compared to 2016. This is partly due to the production of a waste product that is not habitual, i.e. ionic exchange resins, due to the breakdown of several collection devices.

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Environmental Indicators / 37

Waste - 2006-2017

Annual Hazardous Waste Production (t)* Indicator for Annual Hazardous Waste Production/Electrical (t) Production* (t/MWh) .5E 500 1.6E-03

250 8.0E-04 6.E 6. . .E 6.E5 .E5 .E . 6. . . .5E5 .5 .5E5 .E5 .E5 6. .5 .6 . 0 0 20072006 2008 200 20172016201520142013201220112010 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

* Hazardous waste generation

In July 2017 the Hazardous Waste Minimisation Plan was presented for the 2017-2020 period, proposing measures for reducing the waste identified as suitable for improvement, and quantifying the anticipated targets for the reduction. Given that the minimisation plan is a four-year plan, the average of the last four years is taken, together with the target for the next four years for the waste generated per unit of production at the site (kg/GWh). The objectives are a 5% reduction of the weight of the average value of the production of “Absorbents and textiles contaminated with hydrocarbons” and “Used Oils” compared to the production during the 2013-2016 period. In 2017 there was a sharp reduction of 98% for both hazardous waste elements, due to the operation of the unit. The SANTURTZI C.C.P. also generates non-hazardous waste which is separated properly to ensure suitable subsequent treatment. These are listed below:

TYPE HAZARDOUS WASTE (t) 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017

Non-metallurgical process 7.58 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 linings

Inert Industrial Waste 53.04 68.96 80.13 53.54 28.55 50.00 24.09 0.00 28.23 52.800 43.770 9.560

Construction and demolition 13.74 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10.86 0.00 3.180 25.740 waste

Paper and Cardboard 6 3.92 3.64 4.955 1.85 1.99 1.23 1.44 1.14 0.850 14.914 1.440

Scrap metal 0.00 0.00 67.86 0.00 10.36 0.00 0.00 9.780 8.4 9.780 17.480 14.880

Wood 28 m3 5.67 5.735 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 9.700

Compressor rinse water 13.3 15.4 26.62 44.02 32.68 35.84 11.78 0.00 11.56 0.00 0.00 0.00

Biological purification sludge 14.42 16.56 16.6 17.46 19.8 16.94 15.26 16.88 16.84 15.540 11.860 17.040

Plastic and containers 2 m3 1.48 0.25 0.15 0.35 0.6 0.6 0.6 0.36 0.300 0.330 0.300

Saline and alkaline batteries 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.077 0.00

Toner 0.04 0.02 0.001 0.05 0.035 0.00 0.020 0.00 0.00 0.00 0.0236 0.000

Glass 0 0.00 0.558 0.00 0.783 0.00 0.200 0.00 0.00 0.00 0.00 0.00

Domestic-type waste 0.00 0.00 7 7. 5 7. 5 7. 5 7. 5 7. 5 2.5 2.200 2.300 2.300

Pruning waste 1.02 5.240 5.200 1.500

TOTAL 108.12 112.01 208.394 127.675 101.908 112.87 60.68 36.2 80.91 86.710 99.1346 82.460

Table 11: Non-hazardous waste generation

Santurtzi Combined Cycle Plant Environmental Statement for 2017 38 / Environmental Indicators

Non-hazardous waste - 2006-2017

Annual Non-Hazardous Waste Production* Annual Non-Hazardous Waste Production* (t) (t/MWh)

300..000 4.0E-02 .E

150.000 2.0E-02 . .65 . . . . 6. .E . .6 6.6 6. .E .E5 6.E 5.E .E5 .E .6E .E 0.000 0.0E+00 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017

*Non-hazardous waste generation

The year 2017 saw a decrease in the amount of Inert Industrial Waste produced, given that less waste of this type is being generated, whereas there was an increase in the production of Construction and Demolition Waste due to the carrying out of works. Total SANTURTZI C.C.P. waste production is as follows: Total Waste Production - 2006-2017

Annual Waste Production* Waste Indicator/Production* (t) (t/MWh)

500.00 4.0E-02 .5 .6E

. 250.00 2.0E-02 . .E 6. .5 . . 5. .6 5.5 6.65 . .E .E 6.E 6.E .6E .6E .E .E 0.00 0.0E00 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

*Total waste generation

7. 4

Resource Consumption

7.4.1 Energy Efficiency Consumption of electricity during stoppages in MWh, as well as fuel, natural gas, and diesel oil in MWh for 2006-2017, is shown in the following graphs together with the total energy consumption obtained as the sum of all:

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Environmental Indicators / 39

Consumption - 2006-2017

Consumption of Auxiliary Units during stoppage* NG consumption* (MWh) (MWh)

Mill.

,000 3 56 66 555 66 6 56 565 4,500 1.5 6

5 6 6 5 65 5 0 0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

Diesel oil consumption* Total energy consumption* (MWh) (MWh)Mill.

300 3,000 6

150 1,500 6

65 5 0 0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

*Change in energy consumption

During stoppages it is not possible to determine the origin of the electric power absorbed from the grid by the SANTURTZI C.C.P, as there is no information available that allows the "total renewable energy consumption" indicator to be calculated. When the plant is in operation, the power consumed is thermal in origin and originates from the plant itself. The following sets out the change in the energy efficiency indicator that compares the total consumption of energy resources with the SANTURTZI C.C.P.electrical energy production over the 2006-2017 period, which is in line with the years of production: Energy efficiency - 2006-2017

“Energy efficiency” indicator* (MWh/MWh)

.00 .6

4.50 . .5 . . .6 . .6 . .5

. . 0.00 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 *Annual change

Santurtzi Combined Cycle Plant Environmental Statement for 2017 40 / Environmental Indicators

7.4.2 Chemicals Consumption The following chart shows the chemical products consumed by the SANTURTZI C.C.P, mainly in the water treatment process, the purification of effluents and preparation of the water-steam cycle water for the period 2006-2017, for which the indicators are similar to the years of production:

Consumption of chemical products - 2006-2017

Change in sulphuric acid consumption* Change in sulphuric acid consumption* (t) (t/MWh)

150.0 6.0E-04 .E 5. 5. .6

75.0 3.0E-04 .E . 5. .E5 . . .E5 .E5 .E5 .E5 . . . . . 0.0 0.0E0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

Change in caustic soda consumption* Change in caustic soda consumption* (t) (t/MWh)

300.0 1.2E-03 66. .E

5.5 150.0 6.0E-04 . 6. . .E . .E5 .E . .E . .E .E . . . . .E5 0.0 0.0E00 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

Change in ammonia consumption* Change in ammonia consumption* (t) (t/MWh)

5.00 1.6E-03 .55 .E . .65 . . 2.50 8.0E-04 . . . .E6 .E6 6.E6 .E5 5.E6 .E6 .6E6 0.00 0.0E00 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

*Change in the use of chemical products

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Environmental Indicators / 41

7.4.3 Water Intake As well as the sea water used in the cooling circuit, all of which is returned, the cycle needs potable water to carry out its production activity. This is provided by the Bilbao Bizkaia Water Consortium. The annual volume of water intake is shown for the 2006-2017 period in total and by process. The intake indicator for cooling was slightly lower than in other years of operation. This is due to the fact that at times only one cooling water pump was in operation.

Water intake - 2006-2017

Total intake Total intake (m3) (m3/MWh) TTA CAPTACI m MWh) Mill.

250 1,500 5 5 665 565

125 65 750

56 6 5 5 5 65 65 6655 6 0 0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

Open cooling circuit* Cooling intake/Gross production* (m3) (m3/MWh)

Mill.

250 1,500 5 56 555

125 66 750

65 6 5 5 6 6 566 65 65 65 0 0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

Other services: Processing water and Consumption water* Intake for Other Services/Gross production* (m3) (m3/MWh)

Miles

400 30 66

200 15 6 5 5 . 6 5 . 6 5 5 . . . . . .5 . . . 0 0 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

*Change in water intake

Santurtzi Combined Cycle Plant Environmental Statement for 2017 42 / Environmental Indicators

7. 5

Biodiversity The surface area occupied by the SANTURTZI C.C.P. remained unchanged throughout the period under consideration (2006-2017): 131,229.5 m2 in ground area and 4,760 m2 in buildings. The specific constructed surface area is indicated as follows (m2/MWh):

Constructed surface area* m2/MWh

6.000 .5

3.000

. . .5 . . . . .6 . . . 0.000 2006 2007 2008 200 2010 2011 2012 2013 2014 2015 2016 2017

*Change in constructed surface area

7. 6

Noise During 2017, and coinciding with the operation of the plant, noise measurements were taken at SANTURTZI C.C.P. by an entity authorised by ENAC, as indicated in the Integrated Environmental Authorisation. The measurement points are located along the perimeter of the site according to the map below:

mites Puntos de medida C

A A Focos

5 E

Figure 7: SANTURTZI C.C.P. noise control points

The measurements taken COMPLY with that established in the IEA, as can be seen in the following table:

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Environmental Indicators / 43

Daytime Manage- Afternoon Measure- Measurement ment Daytime Limit ment Afternoon Limit Night-time Meas- Night-time Limit Point dB(A) dB(A) dB(A) dB(A) urement dB(A) dB(A) 1 58 75 55 75 55 65

2 62 75 60 75 60 65

3 60 75 60 75 60 65

4 62 75 60 75 60 65

5 56 75 56 75 56 65

Table 12: Noise measurements

Santurtzi Combined Cycle Plant Environmental Statement for 2017 44 / Legislation

8 Legislation

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SANTURTZI C.C.P. has the authorisations, licenses and permits required for its activity. The most relevant are listed below:

LEGAL REQUIREMENT PROVISION DATE Environmental impact Resolution of the General Secretary's Office for the Environment 10/12/2001 statement giving an Environmental Impact Statement for a construction project of a combined cycle power plant of approximately 400 MW rated electric power, using natural gas as the main fuel at the Santurce (Biscay) power station.

Installation authorisation Directorate-General for Energy Policy and Mines of the Ministry 25/02/2002 of Finance authorising the installation of a combined cycle electric power station located in the municipal district of Santurce (Biscay). Building permit. Business Building and business activity permit 03/06/2002 activity permit Integrated Environmental Resolution of 29 October 2004 awarding Iberdrola Generación 29/10/2004 Authorisation S.A.U. an Integrated Environmental Authorisation for the Santurtzi Power Plant, Unit 4-Combined Cycle Plant project in the municipal district of Santurtzi. Integrated Environmental Resolution of 2 December 2008 putting into effect the Integrated 2/12/2008 Authorisation Environmental Authorisation granted to Hidroeléctrica Ibérica, S.L.U. for the Santurtzi Power Plant, Unit 4-Combined Cycle Plant project in the municipal district of Santurtzi. Business license Opening Licence for the Combined Cycle Thermal Power Station, 22/06/2009 Unit IV Integrated Environmental Resolution of 20 October 2012 of the Vice-Ministry for the 17/10/2012 Authorisation Environment amending the integrated Environmental Authorisation granted to Hidroeléctrica Ibérica, S.L.U. for its Combined Cycle Plant project, in the municipal area of Santurtzi. Integrated Environmental Resolution of 30 December 2015 of the Vice-Ministry for the 30/12/2015 Authorisation Environment amending the Integrated Environmental Authorisation granted to Hidroeléctrica Ibérica, S.L.U. for its Combined Cycle Plant project in the municipal district of Santurtzi. EMAS RESOLUTION of 17 November 2016 of the Vice-Ministry for the 17/11/2016 Environment renewing the registration of Hidroeléctrica Ibérica S.L.U for its Santurce Combined Cycle Unit 4 facility in the Eco- Management and Audit Scheme (EMAS) with Registration No: ES- EU-000041 Integrated Environmental Amendment to Section 2 G - Conditions relating to the protection 07/07/2017 Authorisation of the land of the IEA of 17 October 2012 and 30 December 2015.

Environmental impact statement Resolution of 25 July 2017 of the State Secretariat for the 04/08/2017 Environment amending the Resolution of 10 December 2001 concerning the environmental impact statement of the combined cycle plant unit 4 project in Santurce (Vizcaya). Table 13: Most relevant authorisations, licences and concessions

The evaluation of compliance with legislation made in accordance with the procedure titled "Monitoring, measurement and analysis of data" shows that the SANTURTZI C.C.P. meets the applicable legal requirements for controlling the environmental parameters associated with its aspects, as shown in Section 7 of this statement, and sends the documentation associated with said aspects to the competent bodies as required. The following indicates the applicable regulations identified for the plant issued in 2017.

Santurtzi Combined Cycle Plant Environmental Statement for 2017 46 / Legislation

• Royal Decree 39/2017 of 27 January, amending Royal Decree 102/2011 on the improvement of air quality. • Order PRA/321/2017 Order dated 7 April, regulating the procedures for determining the emissions of the air pollutants SO2, NOx, particles and CO from large combustion facilities, the control of metering equipment, and the processing and sending of the information relating to such emissions. • COUNCIL REGULATION (EU) 2017/997 of 8 June 2017 amending Annex III to Directive 2008/98/EC of the European Parliament and of the Council as regards the hazardous property HP 14 ‘Ecotoxic’. • Order APM/1040/2017, dated 23 October, establishing the date from which the constitution of the mandatory financial guarantee will be required for the activities of Annex III of Law 26/2007, of 23 October, on Environmental Responsibility, classified as priority level 1 and 2 by way of Order ARM/1783/2011, of 22 June, thereby modifying the annex thereof. • Royal Decree 1042/2017, of 22 December, on the limitation of emissions into the air of certain pollutants from medium combustion plants and updating Annex IV of Law 34/2007, of 15 November, on air quality and atmosphere protection. This Royal Decree transposes Directive (EU) 2015/2193 of the European Parliament and of the Council of 25 November 2015 on the limitation of emissions of certain pollutants into the air from medium combustion plants (≥ 1 MW y < 50 MW).

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017 Deadline for the next validation / 47

9 Deadline for the next validation

The next validation of the Environmental Statement for 2018 in accordance with Regulation (EU) 1221/2009, amended by Regulation (EU) 2017/2015, will take place during 2019.

Santurtzi Combined Cycle Plant Environmental Statement for 2017 48 / Validation

10 Validation

ENVIRONMENTAL STATEMENT VALIDATED BY

IN ACCORDANCE WITH REGULATION No. 1221/2009 Amended by REGULATION (EU) 2017/2015

CERTIFIED ENVIRONMENTAL AUDITOR No. ES-V-0001

Validation date:

/ Santurtzi Combined Cycle Plant Environmental Statement for 2017