(e) Notwithstanding the provisions of subdivision (a) of this section, the operator need only attempt to check vent-connected appliances located in the basement or utility room in multifamily dwellings once in the 12-month period beginning October 1st each year.

1. (1) If the operator finds the basement or utility room locked, he must attempt to locate the superintendent in order to gain access.
2. (2) If access cannot be gained, the operator must document that no check was made for this reason.
3. (3) If another leak or odor complaint is investigated at the same location in the same 12-month period, the operator must again attempt to gain access.
4. (4) Notwithstanding paragraphs (1) and (2) of this subdivision, if there is reason to suspect that a gas leak or CO condition exists in an inaccessible area, the operator must call the police or fire department for assistance to gain access.