In support of sustainable infrastructure development in the mining sector, Urban Plastic continues to show its commitment to environmental responsibility and operational efficiency. Recently, the company successfully delivered nine rolls of 1mm (1000-micron) HDPE geomembrane to a mining site in Eastern Indonesia. The product will be used to line a coal stockpile area, helping to prevent environmental contamination and improve the site’s waste management system.
Why Geomembrane Matters for Coal Stockpiles
Coal stockpiles are open storage areas where mined coal is placed before distribution. While essential to mining operations, these stockpiles can pose serious environmental risks. When rainwater mixes with coal, it creates leachate—a liquid that can carry harmful particles, heavy metals, and other pollutants. If not properly contained, this runoff can seep into the ground or nearby waterways, leading to serious soil and water contamination.
That’s where HDPE geomembranes come in. Acting as a protective liner, HDPE geomembrane is a highly effective solution to minimize leachate leakage. According to research by Giroud and Bonaparte (1989), geomembrane liners significantly reduce fluid leakage, especially when installed correctly using quality materials.
Among geosynthetic materials, HDPE (High-Density Polyethylene) stands out in mining applications due to its excellent resistance to harsh chemicals, mechanical stress, and UV exposure—making it ideal for outdoor use in extreme environments. As highlighted by Koerner (2012) in Designing with Geosynthetics, HDPE is an industry standard thanks to its outstanding durability and long-term performance.

Why 1mm Geomembrane is the Right Choice
For this project, the selected geomembrane thickness was 1mm (1000 microns). This size offers an ideal balance between strength, durability, and cost-effectiveness. In large-scale projects, selecting the right thickness is critical—it must meet technical needs while keeping budgets in check. A 1mm geomembrane is strong enough to withstand the pressure and tough conditions of a stockpile, while also being easier to handle during installation.
Trusted Supply Partner: Urban Plastic
Urban Plastic is a trusted manufacturer and distributor of geomembrane and geosynthetic products in Indonesia. All our geomembranes undergo rigorous international testing, including ASTM D5885, which measures a material’s long-term resistance to oxidation. This ensures the products are not only technically reliable but also safe and long-lasting in real-world conditions.
This recent delivery highlights our logistical strength as well. Despite the geographic challenges of reaching remote Eastern Indonesia, Urban Plastic ensured the shipment arrived safely, smoothly, and right on schedule through careful planning and efficient coordination.

Ready to Support Projects Across Indonesia
Urban Plastic is dedicated to being your reliable partner in providing geomembranes and other geosynthetic solutions. We support a wide range of projects in mining, waste management, and infrastructure development. Our geomembrane products are available in various thicknesses to meet specific technical requirements.
In addition, we offer technical support and consultation services to assist clients with geomembrane installation. With a professional approach and commitment to international standards, we’re ready to help you design effective, sustainable lining systems for your project—wherever you are in Indonesia.
For more information about Geomembrane please contact: Whatsapp/Mobile Phone: +62 822 9933 3938 (Ms. Panni) or Email : info@baligeotex.com
Reference
- Giroud, J. P., & Bonaparte, R. (1989). Leakage through liners constructed with geomembranes—Part I: Geomembrane liners. Geotextiles and Geomembranes, 8(1), 27–67.
- Koerner, R. M. (2012). Designing with Geosynthetics (6th ed.). Xlibris Corporation.
- ASTM D5885 – Standard Test Method for Determining Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry.
U.S. Environmental Protection Agency (EPA). (2011). Using Geosynthetic Liners for Coal Ash Ponds.
