Yes indeed only the shop owners and supervisors are considered legally responsible and may be criminally liable if they knowingly allow or participate in environmental violations.
Environmental violations may include littering, releasing of harmful gasses that may affect the ozone layer, improper disposal of wastes, etc.
So if any of these environmental laws are violated, the owner and supervisors of that shop are truly responsible for this violation and can be considered legally responsible for their act and are criminally liable as well, if they knowingly violate such laws.