What should be done with obstructions in a well before abandonment?

During the process of well abandonment, it is crucial to ensure that the well is sealed properly to eliminate any potential hazards and prevent contamination of groundwater. Removing obstructions from a well before abandonment is an essential step because any remaining debris or materials can create channels for contaminants to enter the groundwater.

When a well is abandoned, it needs to be filled in a way that prevents any future water flow through the well bore. If obstructions such as debris, old casing, or pump parts are left in place, they can interfere with the structural integrity of the fill material, leading to voids that might allow surface water or contaminants to migrate downward.

By removing all obstructions, the well can be properly sealed with appropriate materials, such as cement or bentonite, ensuring that the well no longer serves as a conduit for contamination and that it is safely decommissioned in accordance with regulations and best practices. This not only protects the surrounding environment but also upholds public health and safety standards regarding water supply and quality.