NIGHT SKY AND DARK ENVIRONMENTS: BEST MANAGEMENT PRACTICES FOR ARTIFICIAL LIGHT AT NIGHT ON BLM-MANAGED LANDS TECHNICAL NOTE 457 41 Notes: Development of a lighting plan must consider safety and security, as well as any federal (e.g., Federal Aviation Administration, Occupational Safety and Health Administration, Mine Safety and Health Administration), state, or local laws and regulations that govern lighting practices at a facility. The Architecture and Engineering Branch (OC-670) at the BLM National Operations Center is available on a cost reimbursable basis to provide lighting design services, review lighting plans prepared by others, or procure lighting design services for BLM projects. The branch is also available on a cost reimbursable basis to provide consultation and review lighting plans submitted to the field and district offices as a condition of approval of an authorized land use by a non-BLM entity. The National Fire Protection Association code #101, Life Safety Code, Chapter 7.8 has specific requirements for lighting that provide for safe egress from buildings during emergencies. Minor installations with facility components and layout that are essentially identical for all applications might not require customized lighting designs; instead, a “preapproved” design from a qualified lighting designer could be used, unless special circumstances (e.g., unusual terrain, habitat for sensitive species) indicate that a custom design would be appropriate. 5.1.2 Select Outdoor Luminaires Certified to Minimize Light Pollution Select outdoor luminaires that meet the DesignLights Consortium LUNA requirements (DLC 2021) or the Illuminating Engineering Society (IES) “Luminaire Classification System for Outdoor Luminaires” (IES 2020) to minimize light pollution and glare within natural habitat and nighttime environments. The Luminaire Classification System (LCS) provides a backlight, uplight, and glare (BUG) rating system (Figure 3). This resource aids the evaluation of an outdoor luminaire’s light output—especially the light escaping in unwanted directions. Figure 3. Representation of BUG system and light pollution.
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