Not as much as you think it is. Our clients are becoming more and more proactive about maintenance.
Here's a good example of how screwed up a government regulation can be.
I hired a another contractor to clean out and restore a stormwater pond outside of Chicago (was not government mandated). We filed the application and paperwork for a beneficial reuse permit to send the excavated silt and debris for recycling instead of disposal after about 4 weeks it still wasn't approved but I was told it should be signed off within a couple days. There was a snow storm coming in so my contractor went ahead and started hauling the waste on a Thu to beat the snow, permit was signed on the following Monday. Now IL is telling us that debris has to removed from the landfarm and taken to a disposal facility not because it is contaminated but because it was hauled a couple days before the permit was signed. No consideration for the fact they sat on the application for weeks, had to beat the storm or it would have sat another couple weeks (costing money) or the whole project was voluntary and not mandated.