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2021 INTEGRATED MANAGEMENT REPORT

AMOUNT OF DRILLING WASTE BY TYPE AND TREATMENT METHOD* Type of waste (tons) Treatment / Destination 2020 2019** 2018 2017

Non-water based waste

Treatment for offshore disposal - - - 462 202

Thermal desorption - - - - -

Inerting - - - 35 1,648

Onshore dispos-al/incineration in con-trolled areas - 851 - - -

Total - 851 - 497 8,339

Water based waste

Treatment for offshore disposal - 2,669 2,815 7,198 81

Onshore disposal in controlled areas - - - - 7,464

Recycling - - - 2,441 11,749

Onshore dispos-al/incineration in con-trolled areas - - - - 2

Total - 2,669 2,815 9,639 19,295

* These data include estimates for the last month of the year. ** The data which may differ from those reported in the Integrated Management Report for previous years are explained by the adjustments and consolidation of the

figures.

WASTE DATA COLLECTION AND CONTROL

Information on the external management of waste is channelled through the Identification Document (or a similar document depending on the country) completed by all those involved in the process and, ultimately, by the waste managers, by means of which Cepsa and the competent body are accredited for their appropriate environmental management.

Internally, information on waste is input into the control applications at each facility. It is analysed and reviewed by the plant technicians so as to keep track of the waste entering the temporary storage facilities and schedule deliveries to the waste manager, as well as other relevant information. This information serves as a basis for the preparation of the legal documentation that the facilities must submit to the competent authorities on a regular basis.

DRILLING WASTE

The drilling muds used are generally water-based and reuse is encouraged through minimisation techniques such as filtration and reverse osmosis.

For fields where oil-based mud is required, thermal desorption is used as a treatment method to remove the hydrocarbons and render the waste inert before on-site disposal.

SIGNIFICANT ENVIRONMENTAL SPILLS

VOLUME OF HYDROCARBON SPILLS (NO. OF BARRELS)

2021 2020 2019 2018 2017

Exploration and Production 2 2 6.16 0 0

Refining 327.07 0 0 57.97 18,628.57

Chemicals 0 0 0 0 0

Distribution and Marketing 9.43 14.47 150.96 37.74 0