IRPC’s internal water resource management approach is based on the 3Rs principle: Reduce, Reuse, and Recycle. That is, reduce water consumption at the source, then reuse and recycle effluent discharge that has undergone treatment to meet quality standards suitable for reuse for other purposes, such as watering plants and using treated water instead of distilled water to prepare chemical solutions. As for digitalization, the i-utility application is being used to monitor water efficiency and promote awareness. This could lead to less water being extracted from the natural sources in the first place. As part of the efforts to develop a culture of water conservation among employees, the company also launched a campaign to encourage employees to conserve water in their daily life at home and at work. Beyond employee engagement, during major scheduled maintenance, the company has collaborated with the machine cleaning contractor to calculate the amount of water consumption in the machine cleaning process. This helps to determine and control the amount of water used as appropriate. In addition, the company joins hands with the PTT Group in conducting a feasibility study to find untapped potential for further water conservation in the production process through the Water Demand Management project. Pilot projects carried out at two plants: ETP and UHV. Wastewater Management IRPC has measured and monitor wastewater based on effluent quality parameters applicable within the company’s own industrial zone to ensure it meets the standards. The Online COD system at Receiving Ponds 1 and delivers the measurement results to the Department of Industrial Works’ monitoring system. IRPC has registered two wastewater treatment plants in IRPC industrial zone in Rayong Province to ensure efficiency in the management of wastewater from the company’s operations. The operation of IRPC’s wastewater treatment plants is controlled by a pipeline network that covers all factories in the industrial zone. Wastewater quality is checked against internal standards prior to being discharged into the treatment facility to ensure the efficiency of treatment at the source and to minimize errors at the central wastewater treatment system. The company has also conducted assessments of the receiving waterbody associated with our operations to avoid any potential impacts on the current ecosystem. For the management of wastewater from major scheduled maintenance, each type of wastewater will be subject to clearly defined disposal method. Wastewater that cannot be fed into the company’s wastewater treatment system will have to be disposed of by a licensed disposal company. This is to prevent unlawful disposal of wastewater and minimize the impact on surrounding communities. To ensure water treatment management efficiency and gain stakeholders’ trust and reassure them of the company’s operational sustainability, IRPC has engaged third-party consultant and government agencies to regularly collect wastewater samples for analysis to ascertain its wastewater quality meets both internal standards and the standards prescribed by the Notifications of the Ministry of Industry. Solid Waste Management IRPC recognizes that, without efficient waste management, our business operations across the value chain may have a significant impact on the environment and society. Improper waste management can contaminate the soil and water, endangering ecosystems and lowering biodiversity. Hazardous compounds in waste streams are also critical, as they can damage public health if not properly handled. For this reason, IRPC is committed to effective waste management practices, prioritizing waste reduction at the source. 149 Business-Driven Sustainability 56-1 ONE REPORT 2023
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