We had a 6" pc of 4" PVC cuts at each location, used orange spray paint, and documented each location on the site drawings. Removal was not really that bad, using the Lull forklifts, a web strap, and a Klien line grip (Chicage Grip) that nicely fit the 5/8" rods. Got them all out within a ten day total period of the teardown. About 50% were 'salvaged' to the event contractor for re-use somewhere else; the rest were mangled and trashed.
The complete teardown (electrical) was completed in 21 days.