Solid Waste Landfill
San Marcelino, Philippines
B&N completed a feasibility study for Dizon Copper-Silver Mines to turn an abandoned copper mine pit into a solid waste landfill.
Dizon proposed the landfill as an alternative solution to a solid waste problem being faced by the Metro Manila Development Authority (MMDA). MMDA is a regional authority that supports the development requirements of 17 municipalities and cities that make up Metro Manila, which has a population of about 12 million. Metro Manila has been experiencing a solid waste crisis, with existing solid waste disposal facilities closed or near full capacity.
The proposed landfill will provide Metro Manila with solid waste disposal capability for the next 50 years.
B&N’s study developed the elements of the solid waste disposal system, which includes three marine transfer loading stations, a marine transfer unloading station, access road and landfill, as well as defined design criteria and environmental compliance. The primary mode of waste transport will be the waterway and a dedicated landfill access road.
Waste will be transported by barges from three marine transfer loading stations along Manila Bay to a marine transfer unloading station at Cawag in Subic Bay. A fleet of trucks will haul the waste along a 25-mile dedicated access road to the landfill in San Marcelino. The distance from Manila to Cawag is about 80 nautical miles.
To guard against the release of contaminants to ground and surface water and into the air, the landfill will include a protective clay liner covering the bottom and side slopes, an additional synthetic liner on the bottom, a leachate collection system and a gas extraction system. The landfill is designed to handle 6,500 tons of waste per day and can accommodate a total of about 180 million cubic meters. Maximum depth of waste will be 300 meters.
B&N’s experience in landfill environmental projects will facilitate the Dizon mine site and provide Dizon with cost-effective methodology and comprehensive environmental protection.