Arizona Carbon Dioxide Storage Agreement (ACS Agreement) is a legally binding contract established between the state of Arizona and entities involved in carbon dioxide (CO2) storage activities. This agreement sets forth the terms and conditions for the safe and regulated storage of CO2 in underground formations within the state. The purpose of the ACS Agreement is to facilitate the development and implementation of carbon capture, utilization, and storage (CCS) projects in Arizona. It outlines the responsibilities and obligations of both the state government and the project proponents to ensure compliance with environmental regulations and safeguard the health and safety of nearby communities. There are primarily two types of Arizona Carbon Dioxide Storage Agreements: 1. Arizona CO2 Storage Lease Agreement: This type of agreement specifically focuses on leasing the subsurface rights of land for storing captured CO2. It establishes the terms for accessing and using underground storage formations while accounting for the rights of landowners and ensuring proper monitoring and verification of the stored CO2. 2. Arizona CO2 Storage Unit Agreement: This agreement pertains to the establishment and operation of CO2 storage units within specific areas designated by the state. It defines the roles and responsibilities of the parties involved, including the state government, project operators, and interested stakeholders, to ensure the appropriate management and operation of the storage unit. Both types of agreements share common goals, such as maintaining secure storage, preventing CO2 leakage, and promoting long-term monitoring and closure of storage sites. They also include provisions for risk assessment, financial responsibilities, liability mechanisms, and reporting requirements to guarantee transparency and compliance throughout the CCS project lifecycle. The Arizona Carbon Dioxide Storage Agreement plays a crucial role in advancing sustainable carbon management strategies, supporting the reduction of greenhouse gas emissions, and fostering the transition to a more climate-friendly energy sector. Through such agreements, Arizona strives to encourage responsible CO2 storage practices while promoting innovation and sustainable development in the field of CCS technology.