The following LSPA compliance tip was introduced at the June 2025 Membership Meeting, which was held via Zoom on Wednesday, June 11, 2025, from 3:45 PM - 5:00 PM.

Compliance Tip  
When OHM from an upgradient source migrates onto a disposal site being addressed for other releases, and regardless of whether DPS has been established, that OHM must be included when evaluating risk and/or otherwise seeking to achieve a Permanent Solution for the disposal site. OHM from an upgradient source is not considered “background” and, for example, cannot be excluded as a contaminant of concern.

Click here to view all published compliance and practice tips. This document is also posted in the Members Only section of the website under Technical Resources.