e. Any owner required to provide, install and maintain a window guard pursuant to subdivision a or d of this section who fails to provide, install or maintain a window guard shall be liable for a class C immediately hazardous violation. Notwithstanding any other provision of law to the contrary, the time within which to correct such violation shall be twenty-one days after service of the notice of violation.
f. Notwithstanding any other provision of law to the contrary, the department shall be the sole agency of the city authorized to seek a monetary penalty from an owner who is required to provide, install and maintain a window guard for failure to provide, install or maintain such window guard. Nothing in this section shall limit the authority of the department of health and mental hygiene to investigate a fall from any window or to issue an order to correct any condition that such department determines contributed to such fall.