We have a place here
that you get a voucher for (from the county) 1 time a year,
then you'll pay thru the ***, the next times
it's free to dump 1 pickup or utility trailer a year
of green waste/slag, tree trimmings or mulching material etc.
it's an old concept here
I think they charge to remove any mulch or shredded materials
I wouldn't know, I never asked or wanted any...
If I needed to grind the stuff up I went & rented a grinder...
We had a bunch of trees removed that were dying or rotten
I couldn't hardly give the mulch/grindings away,
I asked everyone if they needed any for the yards or gardens...
Nope most already had enough of their own & I had to haul it off...
Oh well, such is life....
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I too, have gravel & decorative, grey, white & road base rock everywhere...
All mostly it's because of a good fire break (
not really I hate to do yard work)
I do still have plenty of trees all around me & 5 cedars in the back
& mainly because I really don't like to have to, be mowing lawns
&/or doing yard work constantly, pulling or chopping down weeds etc.
every damn week 
in nice weather (
which in Ca. is a lot)
Killing myself off even quicker

When I could be working on my RR, enjoying the nice weather
or shooting, hunting, fishing, skiing, playing with the dog, cruising
or drinking

instead of yard work...