2016 SD Report Preparation Approach

MATERIALITY ASSESSMENT

PTTGC’s materiality assessment process is considered essential to sustainable business operation and in compliance with both direct and indirect stakeholder’s expectations. The assessment process for material issues is performed in accordance with the four main phases of GRI’s principles, as follows:

STEP 1: IDENTIFICATION OF MATERIAL ASPECTS AND ESTABLISHMENT OF REPORT BOUNDARIES

Identify key economic, social and environmental issues that are material to the sustainability of the PTTGC, by examining business risks and opportunities, global business trends and industry levels, the United Nations Sustainable Development Goals (SDGs), as well as both internal and external stakeholder expectations. This process is accomplished by responsible departments via the compilation of data from a variety of sources, both primary and secondary data.

STEP 2: PRIORITIZATION OF MATERIAL ASPECTS

Prioritize and evaluate the level of importance for each aspect, based on consideration of two sustainability dimensions: 1) Key interests of stakeholders, using information from stakeholder engagement with company departments, or from company’s engagement channels as well as direct communication with stakeholders on specific issues and 2) Significance environmental and social implications in areas that are impacted by PTTGC’s business operations. Then, each material aspect is ranked from one to four according to the criteria of risk evaluation and opportunity for business operations and the degree of stakeholder’s interest. This report covers and focuses on high and medium materiality.

STEP 3: VALIDATION OF MATERIAL ASPECT

  • Compile results from the assessment of material aspects and identify relationship between material aspects and the GRI Aspects in order to prepare a summary of material aspects to PTTGC and the reporting scope on each specific area. Thenceforth, present these findings to the Sustainable Development Committee.
  • Review the results of the materiality assessment for compatibility with the company context, goals and strategy. Additionally, Sustainable Development Committee is considered consent for data disclosure on sensitive and specific information with potential repercussions on company business.
  • Prepare the report content and perform a comprehensiveness review, which is carried out by responsibility departments the Sustainable Development Committee and external agencies for the transparency, accuracy and thoroughness of disclosed information.
  • Undergo and evaluation process by independent external agencies to examine the procedures for materiality assessment, stakeholder engagement as well as the data collection and evaluation, in order to obtain accurate, clear and comprehensive information.

STEP 4: CONTINUOUS DEVELOPMENT

Perform an ongoing review of information released in the Sustainability Report, including the gathering of suggestions and recommendations from relevant stakeholders, as well as opinions from sustainability report survey. Comments and suggestions will be used for improvement of the next report and to ensure appropriate content disclosure as well as consistency with desired communication topics.

REPORTING SCOPE WITHIN AND OUTSIDE THE ORGANIZATION

The reporting scope of this report covers subsidiaries where the Company holds more than 50 percent of the share capital. These subsidiaries are part of the Company's seven business units. Data of the business units can be found in the Annual Report and website. This report emphasizes on Thailand's sustainability. The information on the Company's subsidiaries and affiliates as well as joint ventures can be found in the annual report. For more information on the subsidiaries and affiliates(G4-17), please visit http://www.pttgcgroup.com/en/aboutus/subsidiaries

According to the PTT GC implementation scope, the corporate value chain consists:

List of entities under operation control of PTTGC