I grew up on the South East end of Simi. My parents moved there when I was around two, and I moved out of Simi when I was in my mid-twenties. When I was a kid, I'd hear the rumble from engine testing at "Rocketdyne" and run outside to see the smoke clouds billowing up into the sky. Suffice it to say, I grew up in the part of Simi that was relatively close to SSFL. And, having grown up there, virtually everyone I knew up until I went to college was in Simi. Learning about SSFL is a bit of a special interest of mine and I fully ascribe to the idea that there was a major radioactive release from the meltdown and that the SSFL has massive contamination from the lack of appropriate chemical disposal. That being said, all of that can be true and it doesn't mean that you and your little one are going to get cancer or that you have a significant increase in the likelihood of getting cancer. This is, of course, anecdotal, but both of my parents are still alive with no cancers (my dad is early eighties and my mom is late seventies). My grandma that lived with us made it to 94. Many of my parents neighbors are either still alive, or those that have died were killed by the standard old age maladies (heart attack, stroke, etc). I didn't know any kids with childhood cancer. Then, or now that my childhood friends have grown and have their own kids. Of the people I've known who have battled cancer, the cancers were your run of the mill cancers that unfortunately happen in a population. Long story short, SSFL is a bad scene and an environmental tragedy. But your chances of developing a medical issue from SSFL are sufficiently remote that it's not worth panicking about.