Switched to rubber mulch last year and it stopped washing onto my pavers.

I checked a similar map for cell towers near Fresno against the state cancer registry back in 2019, and the overlap was tight enough that I spent a whole weekend digging into soil contamination reports instead. Turns out the real culprit was old agricultural chemicals in the groundwater, not the towers, but the map still pointed me somewhere useful. That experience taught me these charts are better for spotting questions than answering them.

Learned that lesson the hard way with a Bronze Age pit. Overlap is where it's at now, even if my legs hate me for it.