One thing you can do is to report the IP addresses. From the header of the emails you can get the IP address of the sender (https://www.xmyip.com/trace-mail). Next, you may find the “owner” of the IP address and report the abuse. The IPs are probably used by proxies or VPN...
It is a highly difficult job since workers must evaluate a variety of scenarios that might still occur in a particular city or plan for the possibility that the city could alter, rebuild, or grow in the future. These personnel must accomplish all these goals for the city to function ...