Alright, guys, I'll put it this way...
If i'm out on the job, and I'm digging a trench in Downtown L.A., and there are utility lines' that we find underground that weren't on the plan, and I break one with the backhoe...I'm looking at my final paycheck from that company. The customer( In this case, the Metro rail authority) is going to complain loudly, and even though the line I go through might just be some PVC counduit and some wires inside, I will not be able to say, "Sorry, sir, I'm here to dig, not to be abused," Load the backhoe back up on the trailer, and leave the job with someone from the City planners' office sitting there gaping.
Although I will say this: Doing business with Gov't. entities, vs. Private Citizens, is a totally different onion to peel. You are usually dealing with people who are at work themselves, paid to be there, and don't take anything personally. Private Citizens, who pay for things directly, are going to be a different story. I would guess that it boils' down to honesty, then. But the honesty has to carry across to both sides' of the aisle.