ASTM D5299/D5299M

ASTM D5299/D5299M is a technical guide for decommissioning groundwater wells, vadose zone monitoring devices, boreholes, and other devices used for environmental activities. It helps users approach closure work in a consistent, environmentally responsible way when monitoring systems are no longer needed. By outlining a practical framework for decommissioning, this standard supports careful planning, reduced site risk, and more reliable compliance with project or regulatory expectations.

Overview of ASTM D5299/D5299M

The ASTM D5299/D5299M standard focuses on the decommissioning of environmental monitoring installations that may remain in the ground after site investigation or long-term monitoring. Its guidance is intended to help users address wells, boreholes, and similar devices in a controlled manner, with attention to protecting subsurface conditions and limiting unintended pathways. As a guide rather than a prescriptive construction standard, it is commonly used to support consistent decision-making during closure activities and documentation.

Common use cases of ASTM D5299/D5299M

This standard is commonly used when groundwater wells or vadose zone monitoring devices are being taken out of service after environmental assessments, remediation projects, or monitoring programs. It is also relevant for boreholes and related devices that no longer need to remain open or maintained. ASTM D5299/D5299M can support field teams, consultants, and project managers working on decommissioning plans, closure records, and site restoration steps where environmental equipment must be safely retired.

Benefits of using ASTM D5299/D5299M

Using ASTM D5299/D5299M can improve consistency across decommissioning tasks and help reduce uncertainty during closure work. It provides a recognized technical reference that supports compliance-focused decision-making, better coordination between stakeholders, and more defensible project documentation. For organizations managing environmental monitoring assets, the standard may also help reduce site risk by encouraging careful handling of abandoned openings and other subsurface devices, while supporting quality control in field procedures and procurement specifications.

• Decommissioning guidance for environmental devices
• Groundwater well and borehole closure
• Vadose zone monitoring device retirement
• Support for planning and documentation
• Consistent closure practices for site work