TRW Global has been consulting on subsurface units since 1995. Each consult includes a site visit with pictures and information on the next steps to repair, remove, or replace.
Future work from sub surface inspection site visits:
The Florida Times article via Jacksonville.com: (copy/paste link in browser)
The Greens Encroachment Barrier Gallery
The Water Wick Drainage System Gallery
Subsurface Equipment Repair & Installation Gallery