Are you purposely missing my statement that the club paid people to pick up the spent ammunition?  They had done so for many years.

Interestingly enough, the county biologist sent to check a pond on the property walked right into the water to take samples, carrying who knows what on her boots from wherever else she'd been into the pond she was testing.  Nonetheless, they were unable to actually prove any significant lead contamination on the property, and certainly nothing outside the area occupied by the gun club.  The claim of lead contamination was not substantiated, yet they used the fear of it as a pretext to get rid of the club.  The club was located in a remote area of a very large county park, far from hikers, houses, or any other users.