The Washington Carbon Dioxide Storage Unit Agreement is a legally-binding agreement that governs the storage of carbon dioxide (CO2) in underground storage units within the state of Washington. The main objective of this agreement is to ensure the safe and effective storage of captured CO2 to reduce greenhouse gas emissions, promote clean energy technologies, and support environmental sustainability efforts. Under this agreement, the Washington Department of Ecology provides regulatory oversight and establishes standards for storage unit operators, ensuring compliance with environmental regulations and minimizing potential risks associated with CO2 storage. The agreement outlines specific requirements and procedures to be followed during the selection, development, and operation of storage units. The agreement encompasses different types of Washington Carbon Dioxide Storage Unit Agreements, which can be categorized as: 1. Permitting Agreement: This type of agreement focuses on the permitting process required for establishing a CO2 storage unit. It includes details about the application process, environmental impact assessments, and the criteria for granting permits to storage unit operators. 2. Operation Agreement: Once a storage unit is permitted, an operation agreement is executed between the storage unit operator and the Department of Ecology. It outlines operational guidelines, monitoring protocols, and reporting requirements to ensure ongoing compliance with regulations and safety standards. 3. Monitoring and Verification Agreement: This type of agreement governs the monitoring and verification activities associated with CO2 storage units. It specifies the frequency and methods for monitoring stored CO2, assessing storage unit integrity, and verifying CO2 containment over time. Such agreements are crucial for ensuring the long-term effectiveness and safety of carbon capture and storage (CCS) projects. 4. Closure and Post-Closure Agreement: Storage unit operators are required to execute closure and post-closure agreements, which lay out the steps and responsibilities involved in decommissioning and closing a storage unit once it reaches the end of its operational life. These agreements often address site restoration, long-term monitoring, and financial assurance requirements to ensure ongoing mitigation of potential environmental impacts. Overall, the Washington Carbon Dioxide Storage Unit Agreement has been designed to regulate and promote responsible CO2 storage practices, facilitating the transition to a low-carbon future while mitigating the impacts of climate change.