Waste Management

Waste Identification

The Company’s operational activities generate solid and liquid waste of both Toxic and Hazardous (B3) and Non-B3. Therefore, the Company is committed to managing waste in an integrated manner based on national and international standards and strives to comply with the applicable provisions. This effort is conducted in order to mitigate the impact of our waste on the surrounding environment. [306-1] The Company has classified two types of waste management, including

  1. Non-Toxic and Hazardous Waste (Non-B3)
  2. Toxic & Hazardous Waste (B3).

Management of Solid Non-B3 Waste [F.14]

All domestic waste that comes from residential and office areas is disposed to the Final Disposal Site (TPA). The Company involves the surrounding community to manage organic waste by processing them into compost which can be used as fertilizer for land revegetation. As for other materials that are not directly related to production aspects, such as used plastic paper and the like, all of them are managed by competent third parties as recycled materials. [306-1]

B3 Waste Management [F.14] [306-2]

The Company manages its B3 Waste by collaborating with a licensed third party, in accordance with the prevailing regulations. The B3 waste generated from the Company’s operational activities is: used lubricating oil, used grease, used batteries, and other B3 waste that can potentially have an adverse impact on the environment.

The first step taken by the Company in managing B3 waste before handing them over to a third party is to collect them at the Temporary Disposal Site (TPS) with the following general procedures:

  1. The packaging is carried out according to the shape and characteristics of B3 waste, free of rust, no leaking nor spilling, and equipped with symbols and labels for B3 waste;
  2. The TPS for B3 waste is labeled with the B3 waste name and symbol, ventilated, and protected from sunlight and rainwater, equipped with a holding tank and storage using a block system with pedestals/pallets;
  3. The TPS building is equipped with emergency response equipment, emergency response routes, SOP for storage, delivery, and emergency response, a log book, and a B3 waste storage board;
  4. Quarterly reporting is submitted to the relevant agency of B3 waste management as referred to Government Regulation No. 22 of 2021, every operational area and work unit of PT TIMAH Tbk must have TPS for B3 waste with a permit from the local government.

Management of Liquid Waste/Effluent [F.14] [306-1]

The Company generates wastewater or effluents from the electrolytic refining (ER) process, tin ore washing process, factory activities, oil-containing water from Fuel Tanks, and diesel power plant activities at the PLTD Metallurgical Unit. In managing wastewater, the Company is committed to always having wastewater quality standards as stipulated by the regulations before disposing of them into the environment. Therefore, the Company built a Wastewater Treatment Plant (WWTP) and oil trap tanks in its main operating facilities in order to ensure that the quality standards of wastewater are in compliance with the regulations. In addition, the Company also actively treats mining operational wastewater in sludge settling ponds by adding lime into it, thus, the water quality can meet the Environmental Quality Standards (BML).

The Company collaborates with a third party to examine the quality of wastewater and all the result parameters are in accordance with the provisions of BML and the Ministry of Environment through the Minister of Environment and Forestry of the Republic of Indonesia Decree No. SK.242/ Menlhk/ Setjen/PKL.1/6/2020 concerning the Extension of Permit for Discharging Wastewater into the Sea on Behalf of PT TIMAH Tbk - Metallurgical Unit. During 2022, the Company has no spill incidents. [F.15] [306-3]

Environmentally Friendly Material Management [F.5]

The processing of mining materials or extraction carried out by the Company originates from tin ore (mining materials) which are then converted into tin metal and some are further processed into tin solder and tin chemicals. The coal mining activities are only carried out through a subsidiary, namely PT Tanjung Alam Jaya so that the Company does not process the coal produced and does not require materials or recycled materials to be processed into products. Therefore, discussions on material management are only on the Company's main activities, namely mining, and processing of tin ore into tin metal. The Company has not been able to display the percentage of product reuse and packaging materials for each product category. [301-2] [301-3] Material daur ulang yang digunakan dalam proses peleburan merupakan material sirkulasi seperti :

Artisanal Mining

Artisanal mining is a simple mining activity that in general is conducted by the communities around the mining areas. Illegal mining activities are carried out without paying attention to the principles of sustainable mining, potentially causing negative impacts on the environment or society, such as damage to resources and reserves, as well as work accidents for these miners. The Company has carried out several mitigation efforts related to illegal mining around PT TIMAH Tbk’s WIUP, such as:

  • Carrying out security patrols at the Company's WIUP
  • Providing guidance through mining and conservation partnership programs
  • Securing tin ore assets in accordance with the security of national vital objects.

Mining Leftovers Management (SHP Management)

The processing of tin alluvial concentrate is conducted based on the weight type, between heavy mineral sand with sand and quartz sand, which are contained in the tin mineral reserves. The Company carries out the separation process using gravity concentration equipment that utilizes the difference in magnetic properties and conductivity properties of minerals. During the processing of mining products to obtain tin concentrate, the Company does not use additional chemical substances, so it does not produce tailings as a residue of the processing.

In line with the Government Regulation on Good Mining Practices, especially related to Mineral Conservation Program, the Company is committed to managing the mining leftovers (SHP) of the tin washing process both in offshore mining objects and onshore mining objects.

  1. In Mining Bucket Chain Dredger and Cutter Suction Dredger, SHP material will be brought in to be processed at the processing site, while most of the other material will be returned to the excavation pit as backfilling material, so it is expected that the open areas will be closed again.
  2. For onshore mining objects, the Company manages the mining leftovers by implementing the closed circulation method. This method is carried out by making pits, as material sediment ponds. The Company also uses mine water, which comes from the collection of rainwater, surface water, and groundwater storage. The collected mine water is used in mining operations for the spray process and the tin ore washing process. After being used, the water is processed again in the sediment pond to clean it so that can be reused in mining operations.