Effectronica posted:

Test the soil for lead contamination. The areas with really cheap houses are well away from the really bad contaminants, but you should still check. If it's above 400 ppm, forget it. Between 100 and 400? You've gotta remove the top four inches of soil, can't use compost unless you can guarantee it's lead-free, put a barrier of mulch all around tilled areas to prevent leaded soil from contaminating plants during rainstorms or windy days, wet the soil before working in the garden, keep the soil more alkaline than 6.5 pH, wash all produce in a 10% solution of vinegar, and peel/remove outer leaves from any vegetables. Also, wear a separate suit of clothing for working in the garden and wash it by itself, and remove your gardening shoes before entering the house.

You should also check for arsenic and PAHs, (20 and 15 ppm respectively for safe agricultural usage) and I guess good luck with your goofy-rear end plan.