Shrug, you can try to fight city hall or you can hire a crew and clean the place up.
If you choose to fight city hall I hope you have deep pockets. If they do any one of a number of things like declaring it a blight and seizing it as part of eminent domain, report it to the EPA so you have to pay for cleanup and monitoring wells to make sure the soil isn't leaking chemicals into the water. And good luckgetting it rezoned residential if you intend to live there. Sure seems pretty and green for industrial zoning.
If you clean the place up and dispose of the trash you can work with them and install a system like you want.
Big problem of course is you didn’t get the prior owner to clean it up as a condition of sale. A Senior Chief Petty Officer in the Navy once told me, trade ot take anything excep for Hazmat, never take that because then you gotta figure out how to dispose of it
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