Decided to stop off on the way home from work and nab a couple of close-by Benchmarks today (CS3388 and CS2808). OK, they are my first.
Found both pretty easily. I did find out that these things need to be cleaned off for photographic purposes. Between the dirty disks and the glare on the Garmin screen, it makes a pretty interesting photo challenge.
Tried another one, CS1325, which looks to be covered over with a road. There are a couple of water department access holes that are within a few feet of where I think the Benchmark should be. Wonder if it is under one of those covers?