Anyplace that ships large stuff (probably including a UPS store) should be able to weigh it. Many places (including where I work) have scales that can take (indeed: they're designed to take) a loaded pallet.
Thanks. I actually got to talk to the district state weights and measures guy. He suggested a couple of places. It's become clear than a "drive on" scale is not going to be accurate enough..........which brings us full circle
If you have 'someoldguy' in his 'little old pickup' with a garbage can or two, how is it that the effin waste transfer station WEIGHS him/ us with any degree of accuracy????