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| | Health, Mental Health and Safety Guidelines for Schools : Physical Environment and Transportation |
 | | Art, theater, shop, vocational courses, science courses, and other courses that require the use of toxic substances, such as paints, solvents, wood dust, and other chemicals, require ventilation systems that are found within the American Conference of Governmental Industrial Hygienists (ACGIH) (14,15) guidelines. |
 | | The ACGIH systems, which consider industrial workers' exposures at the "threshold limit value" (TLV), must be designed to meet the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) standard of 1/10 of the TLV or lower (20-22). |
 | | Inspections should be performed at least annually for expired chemicals and/or damaged containers, which should be removed and disposed of properly. |
| www.nationalguidelines.org /guideline.cfm?guideNum=6-09&pageRefresh=true (449 words) |
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