An area of the home may be used for child care only if it: Has been approved for use by the office; Meets the requirements of all applicable fire codes; and Does not have a condition that may pose a risk to the health, safety, or welfare of the children in care. The space used for child care purposes may include space within the family living area of the residence. A minimum of 35 square feet of floor space shall be provided for each child in care, except that a minimum of 30 square feet of floor space shall be provided for each child in a large family child care home that was licensed as a small center before December 1, 1971. A child care home currently approved by the office to operate with less square footage per child than required by §C of this regulation may continue to operate with that reduced square footage as long as the: Provider demonstrates to the satisfaction of the office the impossibility of complying with the minimum square footage required by §C of this regulation while maintaining the economic viability of the program; and Office determines that the reduced square footage does not threaten the health, safety, or welfare of any child in care. Calculation of the square footage of floor space provided for each child: May include furniture and equipment routinely used for child care purposes, such as but not limited to infant high chairs, diapering stations, tables and chairs used for program activities, and open shelves for storage of items belonging to children in care or related to program activities; and May not include any floor space, rooms, or areas within the area approved for child care that are not suitable or available for the daily program activities of the children, such as but not limited to columns, vestibules, corridors, and equipment or storage space reserved for used by a resident. If approved to provide care for infants or toddlers, the provider shall designate space for mothers to breastfeed or express breast milk that: Is not located in a bathroom; Has access to an electrical outlet; Has appropriate seating; and Has access to running water.