The Contra Costa California Relinquishment Provision is a legal provision that applies to all offset wells in the region. It is designed to regulate the relinquishment of oil and gas wells in Contra Costa County, California, in order to ensure proper environmental and safety measures are taken during the decommissioning process. Under this provision, operators of offset wells must follow specific guidelines and procedures when permanently closing and abandoning their wells. This ensures that the relinquishment process is carried out in a manner that protects the environment and prevents any potential hazards to public health and safety. The Contra Costa California Relinquishment Provision mandates the proper plugging and abandonment of wells, including the removal or isolation of all equipment and infrastructure associated with the well. It also requires operators to notify the appropriate regulatory agencies, such as the California Department of Conservation's Division of Oil, Gas, and Geothermal Resources (Dog), before initiating the relinquishment process. There are different types of Contra Costa California Relinquishment Provisions depending on the specific characteristics of the offset wells. These may include vertical wells, horizontal wells, directional wells, or unconventional wells such as fracked or enhanced oil recovery (FOR) wells. Each type of well may have its own set of regulations and procedures to ensure safe and responsible relinquishment. The Contra Costa California Relinquishment Provision also addresses the potential for groundwater contamination during the decommissioning process. It requires operators to take appropriate measures to prevent any leakage or discharge of hazardous substances into aquifers or other water sources. Overall, the Contra Costa California Relinquishment Provision — All offset Wells is a comprehensive regulatory framework that aims to ensure the proper and safe relinquishment of oil and gas wells in Contra Costa County. By adhering to these provisions, operators can contribute to the protection of the environment and the well-being of the local community.