Brine that may exist under the repository in the Castile Formation is not a problem for WIPP because there are not any pathways between the two locations. Panel Closures are not seals because VOCs will continue to seep out of the closed panels. However, particulate waste will not come out. Closures will employ commonly used materials, but the design and materials have never been used under these exact conditions before. Some shaftsealing design materials, like compacted salt, have never been used for sealing shafts before.
Proper closure is dependent on proper funding.
This waste would come before the Permit was issued. The DOE did not consider the impact of this waste on the Permit Application when they made the decision to ship it. The only possible transport mechanism into the Culebra is up the shafts. There are no monitoring wells planned for the Magenta because the Culebra is so much more transmissive. Only borehole WIPP-33 to the west of the site showed caverns and evidence of karst.