Also, modern windows etc. can eliminate the noise almost entirely when you are inside. Airports often even pay for these upgrades.
It causes problems way further out than that. For example the expansion of Schiphol and now Lelystad airport will cause noise problems for people who live over 100 miles from the airport.
Source: am pilot
Basically, Schiphol is getting too crowded so they are opening a second location (actually, it already exist but it's a small airport now which mainly services small private planes) in Lelystad. As the new location is relatively close to Schiphol (about 32 miles) the new inbound routes and holding patterns have to be below the existing routes for Schiphol because there simply is no other place for them to go.
Plenty of information about it available online but most of it's in Dutch. This report has a couple of maps and charts which may be useful for you: http://hoogoverijssel.nl/wp-content/uploads/2017/07/20170711...
Edit: and some more info: http://www.pbbo.info/documenten/Luchtruim%20Lelystad%20ACS.p...
The noise estimations in your first link show the estimated noise in Ens which is 18 miles out and directly below the approach path at 40 dB, and for a more pathological case in Wezep 20 miles out at 45 dB. For reference that's somewhere between "noise at the library" and "quiet suburb"[1].
If you search for "Projectie Route" you can see graphs showing that the estimated approach and departure paths, planes coming in for landing are at FL60 5-10 miles out, planes departing are climbing past FL30 10 miles out.
I'm not dismissing the fact that some people in close by bedroom communities are going to be hearing airplanes regularly, but this claim that it's going to be an issue for anyone even 20 miles out is nonsense, let alone 100 miles out.
Ghent in Belgium is around 100 miles from Amsterdam, planes just crossing the Dutch-Belgian border aren't at FL50 as if they were on their final approach to Schiphol.
1. http://www.industrialnoisecontrol.com/comparative-noise-exam...
That's easily shown to be hyperbolic nonsense if you look at housing prices in the "worst" (some people like it) possible places near runways at busy international airports. There's a drop for sure, but it's marginal.
Now compare that marginal drop to the overall positive impact on the local economy from more tourism, better access to travel from people who live within hours driving distance of the city etc., and it becomes easy to make the case that the lack of airport expansion is more a case of NIMBY-ism than some optimization for the common good.
The tourism and extra revenue for other people does not help the people who suffer from the daily noise. The slight drop in house value isn't the problem, but the fact that they may have to move at all.
If your house has to be torn down to make place for a new runway, you hopefully get paid well over the market value for your house. But if your house can stay, but is suddenly right next to a runway, you may wish they'd bought your house, but airports usually don't reimburse those people the same way.
There's a good reason why airports have noise regulations. Unfortunately, it turns out those rules can be far too flexible. Around Schiphol, it turns out the measured noise doesn't count. They calculate how much noise you get, and if your experience is different, tough luck.
Of course people who don't yet get any benefits from the airport construction aren't vocal about increased investment in its infrastructure, even though collectively they'll be the beneficiaries.
This is a classic example of concentrated benefits and diffuse costs, with the concentrated benefit being the NIMBYs who live near the airport and benefit from the status quo, and the greater diffuse cost being what society at large has to lose from it not being built out.
I'm not familiar with how airport noise regulations work in The Netherlands, but the situation you're describing with Schiphol doesn't sound unreasonable at all.
Unlike a club next door the amount of noise from an airport should be easily predicted based on available data, we know where the planes were at at any given time, and can construct very accurate models of what the noise at any given point on the ground will be.
Why would the council need to show up to do noise measurements only to find that yes, the noise is pretty much exactly the same as what your neighbor next door is experiencing?
If the noise is being systematically underestimated that's another matter, which the courts could presumably sort out, but that they're relying on estimations seems like good policy to me.
The decision on whether to allow an airport to expand is a careful balance of a lot of different concerns. An honest government or regulator weighs those concerns honestly, but because of the financial concerns surrounding a big airport, there's always an incentive to game the system.