Light Pollution Reduction - SSc8 Intent To minimize the light trespass from the building and site, reduce sky-glow to increase night sky access, improve nighttime visibility through glare reduction and reduce development impact from lighting on nocturnal environments Requirements Interior Lighting - Non-emergency luminaires shall be automatically controlled to turn off during non-business hours. After-hours override may be provided by a manual or occupant-sensing device provided the override lasts no more than 30 minutes Exterior Lighting - Light areas only as required for safety and comfort. Do not exceed 80% of lighting power densities for exterior areas and 50% for facades and landscaping as per ASHRAE/IESNA 90.1-2004 The intent and requirements described on this webpage are paraphrased from the copyrighted works of the USGBC "LEED 2009 for New Construction and Major Renovations Rating System November 2008", and, the CAGBC "LEED Rating System & Addendum for New Construction and Major Renovations LEED Canada-NC version 1.0 December 2004", and are presented here strictly for informational purposes and are not intended to supplant or be used in place of the original copyrighted works.