Most likely, the plumber did not to dig down 3 ft and do the work of installing a pit less adapter in order to properly bury the water line to the tank. I operate 16 wells with submersible pumps around two industrial facilities with well depths ranging from 35 feet to 300 feet. Some pumps are 220 volt others are 120 volt. Been running these pumps for 27 years. No problems!! I do not have check valves installed in any of these pumps due to potential freeze issues. When using a well tank, I would think a check valve is necessary.
Yes you can put a pump in your well at that depth.
Support 2A. Because a dog without teeth has no bite.
Being married is work. Work is management and labor. We all know how well management and labor get along.