Here's the standard advice: https://extension.oregonstate.edu/gardening/soil-compost/should-i-worry-about-heavy-metals-my-garden-soil https://extension.oregonst

Here's the standard advice: https://extension.oregonstate.edu/gardening/soil-compost/should-i-worry-about-heavy-metals-my-garden-soil https://extension.oregonstate.edu/gardening/soil-compost/sho... If soil lead is sufficiently high, leafy greens and root vegetables are not recommended.