3/29/12 – Langenheim & Thomson install block walls per THP details.

County reviewed THP proposed test of replacing block wall with reinforced stud wall system. Due to security concern, wall is to remain a block wall system. THP to complete test installation of block wall system with control joints.

3/29/12 – THP issued preliminary summary letter and will follow-up with detailed letter report.

3/30/12 – THP issued final report with all test repairs complete.