(2) In order to protect public health, the state board of health shall:

• (a) Adopt rules for group A public water systems, as defined in RCW 70.119A.020, necessary to assure safe and reliable public drinking water and to protect the public health. Such rules shall establish requirements regarding:
• (i) The design and construction of public water system facilities, including proper sizing of pipes and storage for the number and type of customers;
• (ii) Drinking water quality Standard, monitoring requirements, and laboratory certification requirements;
• (iii) Public water system management and reporting requirements;
• (iv) Public water system planning and emergency response requirements;
• (v) Public water system operation and maintenance requirements;
• (vi) Water quality, reliability, and management of existing but inadequate public water systems; and
• (vii) Quality Standard for the source or supply, or both source and supply, of water for bottled water plants;
• (b) Adopt rules as necessary for group B public water systems, as defined in RCW 70.119A.020. The rules shall, at a minimum, establish requirements regarding the initial design and construction of a public water system. The state board of health rules may waive some or all requirements for group B public water systems with fewer than five connections;
• (c) Adopt rules and Standard for prevention, control, and abatement of health hazards and nuisances related to the disposal of human and animal excreta and animal remains;
• (d) Adopt rules controlling public health related to environmental conditions including but not limited to heating, lighting, ventilation, sanitary facilities, and cleanliness in public facilities including but not limited to food service establishments, schools, recreational facilities, and transient accommodations;

(1) The superintendent of public instruction may implement a model indoor air quality program in a school district selected by the superintendent.

(2) The superintendent shall ensure that the model program includes:

• (a) An initial evaluation by an indoor air quality expert of the current indoor air quality in the school district. The evaluation shall be completed within ninety days after the beginning of the school year;
• (b) Establishment of procedures to ensure the maintenance and operation of any ventilation and filtration system used. These procedures shall be implemented within thirty days of the initial evaluation;
• (c) A reevaluation by an indoor air quality expert, to be conducted approximately two hundred seventy days after the initial evaluation; and
• (d) The implementation of other procedures or plans that the superintendent deems necessary to implement the model program.

This page addresses indoor air quality plans

(1) All rooms used by students or staff shall be kept reasonably free of all objectionable odor, excessive heat or condensation. (2) All sources producing air contaminants of public health importance shall be controlled by the provision and maintenance of local mechanical exhaust ventilation systems as approved by the health officer.

School officials shall:

• (1) Provide mechanical exhaust ventilation that meets or exceeds the requirements in chapter 51-52 WAC at locations intended for equipment or activities that produce air contaminants of public health importance.
• (2) Situate fresh air intakes away from building exhaust vents and other sources of air contaminants of public health importance in a manner that meets or exceeds the requirements in chapter 51-52 WAC. Sources of air contaminants include bus and vehicle loading zones, and might include, but are not limited to, parking areas and areas where pesticides or herbicides are commonly applied.
• (3) Use materials that will not deteriorate and contribute particulates to the air stream if insulating the interior of air handling ducts. Insulation materials must be designed to accommodate duct cleaning and exposure to air flow without deteriorating. This subsection does not apply if the local permitting jurisdiction received a complete building permit application within three years after the effective date of this section.
• (4) Use ducted air returns and not open plenum air returns consisting of the open space above suspended ceilings. This subsection does not apply to:
• (a) Alterations to school facilities;
• (b) Additions to school facilities that tie into existing ventilation systems that use open plenum air returns; or
• (c) Facilities for which the local permitting jurisdiction received a complete building permit application within three years after the effective date of this section.

School officials shall:

• (1) Heat occupied areas of school buildings during school hours and school-sponsored events to maintain a minimum temperature of sixty-five degrees Fahrenheit except for gymnasiums and hallways, which must be maintained at a minimum temperature of sixty degrees Fahrenheit.
• (2) Ventilate occupied areas of school buildings during school hours and school-sponsored events. During periods of ventilation:
• (a) For school facilities constructed or sited under a building permit for which the local permitting jurisdiction received a completed building permit application on or after the effective date of this section, provide, as a minimum, outdoor air according to WAC 51-52-0403, Table 403.3, Required Outdoor Ventilation Air.
• (b) For school facilities constructed or sited under a building permit for which the local permitting jurisdiction received a completed building permit application before the effective date of this section, conduct standard operation and maintenance best practices including, but not limited to, making timely repairs, removing obstructions, and replacing filters and fan drive belts, and setting system controls so that, to the extent possible given the design of the ventilation system, outdoor air is provided consistent with WAC 51-52-0403, Table 403.3, Required Outdoor Ventilation Air.
• (3) Use and maintain mechanical exhaust ventilation installed for equipment or activities that produce air contaminants of public health importance or moisture.
• (4) Limit student exposure to air contaminants of public health importance produced by heat laminators, laser printers, photocopiers, and other office equipment by placing such equipment in appropriately ventilated spaces and providing instruction to users on how to operate and maintain equipment as recommended by the manufacturer.
• (5) Take preventive or corrective action when pesticides, herbicides, or air contaminants of public health importance are likely to be drawn or are drawn into the building or ventilation system.