Dynamic Purchasing System for handling contaminated masses such as shooting range masses and PFAS/PFOS Click here: https://permalink.mercell.com/132077075.aspx This DPS will primarily cover the need for handling of shooting range masses and PFAS/PFOS masses, but can also in some cases be used for other types of masses such as oil-contaminated masses or concrete. Each project includes a competition for this DPS where qualified tenderers will be invited to participate.