Light, Circulation, Temperature, Noise Requirements

At least every three years, an independent, qualified source shall document that all living areas have: (1) Lighting of at least 20 foot candles at desk level and in the personal grooming areas; (2) Circulation of at least ten cubic feet of outside or recirculated filtered air per minute; (3) Temperatures appropriate to summer and winter comfort zones; and, (4) Noise levels that do not exceed 70 decibels in daytime or 45 decibels at night.