He used to add water to concrete mixes from the truck, for example, to make it more fluid "because is easy to work and results in a smoother finish".  

He tells me he sits by his from window, saw a sanitation truck come by, dump the garbage in the truck, some of it fell out, it was a windy day, so it got blown away and landed on my sidewalk.

A legitimate 2 man shop in my state with mechanic, helper, truck all the insurance and expenses runs around 150k/year.