Patent ID: 7815400

Claim:
A retainer assembly comprising: a retainer structure comprising a flexible mesh bag arranged to hold remediation materials contained within a porous container that is separate from the mesh bag, the flexible mesh bag comprising a plurality of openings to permit adequate fluid flow through the mesh bag and to the porous container containing the remediation materials; and an anchor assembly comprising a plurality of rigid shaft members passing through the openings in the mesh bag, each rigid shaft member having a distal end larger than the opening in the mesh bag through which the rigid shaft member is passed, each rigid shaft member securing the mesh bag at the location of the opening through which that rigid shaft is passed to an anchor point, the flexible mash bag comprising sufficient flexibility to conform to contours of the porous container containing the remediation materials and to permit motion of the porous container containing the remediation materials within the mesh bag in three dimensions with respect to each anchor point.