B. The board or the division shall not approve a school building project if any of the following conditions exists:

1. 1. The environmental site assessment indicates that the site cannot meet, within reasonable expenditures, the same criteria established for residential properties.
2. 2. The plans incorporate flat roof construction that does not have adequate pitch towards drains in order to prevent pooling of water.
3. 3. The plans do not incorporate indoor air quality guidelines that are acceptable to the division. The division shall consider indoor air quality guidelines in accordance with the sheet metal and air conditioning contractors national association's publication entitled "indoor air quality guidelines for occupied buildings under construction".

C. Each school district governing board that installed or renovated its HVAC system on or after August 12, 2005 shall ensure that its HVAC system meets both of the following requirements:

1. 1. Is maintained and operated in a manner consistent with ventilation standards acceptable to the division. The division shall consider ventilation standards in accordance with standard 62.
2. 2. Is operated continuously during school activity hours except during scheduled maintenance and emergency repairs and except during periods for which school officials can demonstrate to the governing board's satisfaction that the quantity of outdoor air supplied by an air supply system that is not mechanically driven meets the requirements for air changes per hour acceptable to the board.