After about a year of searching Google Maps and driving around the EPZ, my map of the current system around the Susquehanna Steam Electric Station in Berwick, PA, is now 100% complete. These are the locations of all 78 of the current ASC T-121s in the system, which infamously replaced a rejected system of 76 ATI HPSS32-R's. Additionally, with the help of my memory, satellite image history, and a handful of NRC documents, I have included some of the locations of the sirens in the old system (Thunderbolts, STH-10s, & Model 5s), as well as where remains are present (marked by an X icon). I intend to add additional locations as I find them.
Anyways, you can view the map here. Enjoy! https://www.google.com/maps/d/drive?sta ... sp=sharing