North Carolina Subsurface Underground Storage Conveyance refers to a system of underground storage mechanisms used in the state of North Carolina to safely store various substances and materials below the surface of the Earth. These storage systems are imperative for efficiently managing and safeguarding resources and substances such as natural gas, petroleum products, chemicals, and hazardous materials in North Carolina. The use of North Carolina Subsurface Underground Storage Conveyance systems is crucial for maintaining the integrity and organization of the state's infrastructure, ensuring the safety of valuable resources, protecting the environment, and minimizing potential risks associated with storing and transporting various substances. Some different types of North Carolina Subsurface Underground Storage Conveyance systems include: 1. Underground Storage Tanks (Uses): These are containers used for storing liquids, such as petroleum products, gasoline, and chemicals. Uses are designed to prevent leaks and contamination of soil and groundwater by complying with strict regulations regarding installation, maintenance, and monitoring. 2. Natural Gas Underground Storage: This type of subsurface storage facility is specifically designed for the storage of natural gas. It involves the utilization of depleted natural gas reservoirs or formations exclusively dedicated to storing excess natural gas during periods of low demand. These facilities play a crucial role in ensuring a consistent supply of natural gas to meet fluctuating demands throughout the year. 3. Chemical and Hazardous Material Storage: Subsurface storage systems are also used for the safe storage and containment of hazardous materials and chemicals. These storage units are built with robust engineering controls to prevent leaks, spills, and potential environmental hazards associated with storing such volatile substances. 4. Aquifer Storage and Recovery (ASR): ASR systems store surplus water during times of abundant supply and recover it during times of drought or increased demand. By injecting excess water into underground aquifers and retrieving it as needed, ASR systems contribute to water resource management and improve resilience against water shortages. The North Carolina Subsurface Underground Storage Conveyance systems play a pivotal role in supporting the state's industrial, commercial, and residential needs while ensuring maximum safety, environmental protection, and efficient resource utilization. Stringent regulations and oversight are in place to ensure proper installation, maintenance, monitoring, and compliance with both state and federal regulations to guarantee the integrity and safety of these underground storage systems in North Carolina.