LRQA Independent Assurance Statement Relating to PTT Global Chemical Public Company Limited’s Integrated Sustainability Report for the calendar year 2021 This Assurance Statement has been prepared for PTT Global Chemical Public Company Limited in accordancewith our contract but is intended for the readers of this Report. Terms of engagement LRQA Group Limited (LRQA) was commissioned by PTT Global Chemical Public Company Limited (GC), to provide independent assurance on its Integrated Sustainability Report for the calendar year 2021 (“the report”) against the assurance criteria below to a limited level of assurance and at the materiality of the professional judgement of the verifier using LRQA’s verification procedure. LRQA’s verification procedure is based on current best practice, is in accordance with ISAE 3000 and uses the following principles of - inclusivity, materiality, responsiveness and reliability of performance data. Our assurance engagement covered GC’s operations and activities in Thailand, including its subsidiary companies where GC has addressed economic, environment and social impacts and specifically the following requirements: • Confirming that the report is in accordance with the: - GRI Standards; core option - GRI Oil and Gas Sector Supplement • Evaluating the reliability of data and information for selected specific standard disclosures: Energy consumption within the organization (GRI 302-1); Total energy consumption outside the organization (GRI 302-2); Energy intensity (GRI 302-3); Water withdrawal, discharge – included COD load and consumptions (GRI 303-3 to 5); SOx, NOx and other significant air emissions (GRI 305-7); Waste generated, diverted from disposal and directed to disposal (GRI 306-3 to 5) – 2020 edition; Type of injury and rates of injury as LTIFR, occupational diseases, lost days and total number of work-related fatalities (GRI 403-9 and 10), Number of process event safety (OGSS OG13), Community investment (GRI 2011) and Ratio of basic salary and remuneration of women to men (GRI 405-2). Our assurance engagement excluded the data and information of GC’s operations and activities outside of Thailand. LRQA’s responsibility is only to GC. LRQA disclaims any liability or responsibility to others as explained in the end footnote. GC’s responsibility is for collecting, aggregating, analysing and presenting all the data and information within the report and for maintaining effective internal controls over the systems from which the report is derived. Ultimately, the report has been approved by, and remains the responsibility of GC. LRQA’s Opinion Based on LRQA’s approach nothing has come to our attention that would cause us to believe that GC has not: • Met the requirements above • Disclosed reliable performance data and information for the selected specific standard disclosures, as no errors or omissions were detected • Covered all the issues that are important to the stakeholders and readers of this Report. The opinion expressed is formed on the basis of a limited level of assurance and at the materiality of the professional judgement of the verifier. Note: The extent of evidence-gathering for a limited assurance engagement is less than for a reasonable assurance engagement. Limited assurance engagements focus on aggregated data rather than physically checking source data at sites. Consequently, the level of assurance obtained in a limited assurance engagement is substantially lower than the assurance that would have been obtained had a reasonable assurance engagement been performed. LRQA’s approach LRQA’s assurance engagements are carried out in accordance with our verification procedure. The following tasks though were undertaken as part of the evidence gathering process for this assurance engagement: • Assessing GC’s approach to stakeholder engagement to confirm that issues raised by stakeholders were captured correctly. We did this by interviewing GC’s Management who engage directly with stakeholder groups as well as reviewing documents and associated records. 272 PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED บริษัท พีทีที โกลบอล เคมิคอล จำ �กัด (มหาชน)
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