This is really well presented, but wouldn't it be more accurate and useful with actual cancer case data instead of estimated cancer risk?
I'm thinking of where I grew up. A local anti-establishment rag noted a cancer cluster in one part of town and wouldn't let go even when shown the truth. The end result of the mess was it went from a cheap but decent area to somewhere I wouldn't want to venture even by day.
The only toxic stuff in the neighborhood was benzene from all the old cars about--the "cluster" was because it was the cheapest decent area in town, people who got sick and had medical bills and couldn't work ended up moving there. The rate of *diagnosis* of cancer there was below average, the cluster was purely due to immigration.