Its the Netherlands. NZ isn't even top 10.

https://www.statista.com/statistics/1061281/trade-value-of-leading-salt-exporter/

No, there is not radioactive lead and polonium everywhere.

Yes, but they are talking about radioactive materials being present: lead-210, polonium, and radium. The 22x amount specifically for the lead-210, not radiation level in general.

Here is the actual report. Its pretty bad. They specifically call out the Army Corps of Engineers for doing a negligent job on earlier testing.

https://drive.google.com/file/d/124fnZz3VJ2KozmhmbYiiedqaPKetRST9/view

It was literally declared a superfund site 30yrs ago. That shouldn't be surprising in and of itself.

I wish they released the actual measured amounts detected. It says they detected "22x the amount of radioactive lead-210 expected at the playground". Uhh... what exactly is the "expected amount" of radioactive material that is found at an elementary playground?

EDIT: Here is the actual report. Its pretty bad. They specifically call out the Army Corps of Engineers for doing a negligent job on earlier testing.

https://drive.google.com/file/d/124fnZz3VJ2KozmhmbYiiedqaPKetRST9/view

When I did it they kept us there until ~10pm and only provided a single medium pizza for all of us for dinner. (We weren't allowed to leave)

I'm assuming the buyer didn't have an agent, so there was only one realtor involved (OP's/the sellers). With only one realtor, OP would only have to pay one commission, but if the buyer had a realtor he would have to pay their commission too (traditionally the seller pays both commissions). So OP's realtor tried to get the buyer to sign him as his realtor, after the deal had already been made, just so he could double dip on the commission (screwing over his actual client) without doing any work.