What characterizes a liner system required by Subtitle C?

A liner system required by Subtitle C is characterized by the inclusion of a double liner system along with a leachate collection system. Subtitle C of the Resource Conservation and Recovery Act (RCRA) sets stringent requirements for hazardous waste landfills to minimize the potential for environmental contamination. The use of a double liner system effectively provides an additional layer of protection, as the first liner can contain any leachate that might escape the waste, while the second liner serves as an extra precaution to prevent leakage into the surrounding environment.

The accompanying leachate collection system is critical because it allows for the monitoring and removal of any liquid that collects at the bottom of the landfill. This helps to prevent the build-up of pressure and potential leakage through the liners, ensuring that leachate is managed in a way that protects groundwater and other environmental resources.

This comprehensive approach effectively reduces the risk of contaminants reaching the environment, which is a fundamental objective of Subtitle C regulations.