The large garden is divided into several plots lined up in four long rows. The central pathway bisecting the garden is a cemented walkway where garden members can temporarily park to load/unload supplies.

Do I need to be concerned that runoff from that walkway will harm my plants (since my plot is right next to the walkway)? From what I've observed it doesn't seem like many cars drive onto the property, but the paranoid side of my is concerned that I'll be eating that stuff in the veggies I grow.