OK, so what is your advice to natalie, just accept it and live with it?
If you wish to quote on planning laws for such a use (quarry) and also landfill, I will not attempt to bore you with facts as you mention you are experienced in such matters, but I have had consnet on two such sites, neither of which I parted with “brown envelopes”, but with large sums of money for Planning and Legal representations.
The “brown envelopes”. Yes often a term kicked about, but many accusers rarely can substantiate unfortunately.
My initial response was as a guidance on not for the purpose of causing further stress.