where can i find like a list of all the types of work i can do with just a city business liscense? i know i cant spry herbicide and that sort of thing. but can i use a gas powered cultivator for flower beds. i want to be as legal as possible. i do have my city license for landscape maintinence. what all can i do under that. where do i find out? i live in Oregon. i know the rules and regs are different for each state. thanks.