OH is a death sentence. Not a matter of if, but how.
Okay honestly OP, I live in OH, it's a wonderful quiet community full of all kinds of families. I love the parks, the proximity to the shopping center and schools, and to me it's a nice balance between somewhat remote and still close to businesses I visit often.
Yes it's in a fire hazard area. I was evacuated twice in 2020 and it sucked. Our fire fighters are amazing though. Real actual living heroes. There was basically no property damage.
Yes there's an asphalt plan a few miles away. Of the 6 years I've lived here I've smelled fumes less times than I can count on one hand. But there are people who believe otherwise and are committed to spreading their views.
I've never smelled pesticides from the orchards, but whatever, probably just a matter of time until they get me. /s
Anyway, you're going to hear all kinds of opinions on the internet from anonymous strangers. Take it all with a grain of salt.
Maybe visit some of the parks on a weekend mid morning to ask real families that live here about your concerns. There's no utopia in Irvine. Every community has pros and cons. Good luck.