11. A monetary administrative penalty of $1,500 in the case of a natural person and $7,500 in other cases may be imposed on any person who(1) installs, or has installed, in a new residential building, a boiler, furnace or water heater powered in whole or in part by oil, in contravention of section 5;
(2) installs, or has installed, in an existing residential building, a boiler, furnace or water heater powered in whole or in part by fossil fuel, in contravention of section 6;
(3) repairs, or has repaired, a boiler, furnace or water heater powered in whole or in part by oil, in contravention of section 7.