YAVAPAI COUNTY PLANNING AND ZONING ORDINANCE Page 150 excluded. Total Outdoor Light Output: means the maximum total amount of light, measured in lumens, from all lamps used in outdoor light fixtures on a property. For lamp types that vary in their output as they age (such as high pressure sodium and metal halide), the initial output, as defined by the manufacturer, is the value to be considered. Includes lighting from all area lighting fixtures, external sign illumination and decorative (non-sign) neon tubes, but does not include lighting used for permitted internally illuminated signs. Also does not included interior lighting, provided however such lighting is directed and or shielded in such a manner that it will not project primarily outside the building or create glare or light trespass. Lighting used under service station canopies is included toward the total output at twenty-five percent (25%) of the rated output of the lamps (see Subsection C.4.d.(4)). Street lighting is exempt from total lumen count. Unshielded Fixture: means an outdoor light fixture that allows light to be emitted above the horizontal direction from the lowest point of the bulb within the fixture. Watt: is the unit used to measure the electrical power consumption (not the light output) of a lamp. C. LIGHTING REQUIREMENTS: 1. Preferred Source: Due to their high energy efficiency, long life and spectral characteristics, low-pressure sodium (LPS) lamps are currently the preferred illumination source throughout the County. Their use is encouraged for outdoor illumination whenever its use would not be detrimental to the use of the property. a. Class 1 Lighting: Businesses who choose to use at least eighty percent (80%) LPS for their Class 1 application are eligible to apply for an additional ten percent (10%) increase in the lumens per acre allowed for their site. b. Class 2 Lighting: LPS lamps are required though up to ten percent (10%) of the total lumens used for Class 2 lighting may be non-LPS light. Ten percent (10%) white light added to the LPS light permits nearly normal color perception. 2. General: a. Outdoor floodlighting by flood light or spot light projection above the horizontal is prohibited except for unshielded fixtures specifically permitted under Subsections C.4.e and C.4.f and properly adjusted motion sensing security lighting fixtures as defined in Subsection B. b. All commercial light fixtures are required to be shielded and shall be installed in such a manner that the shielding complies with the definition of fully shielded fixtures. Residential requirements and exceptions are provided in Subsection C.3. Building lighting that incorporates the colors of a company logo, trademark or sign shall be considered as signage. c. All light fixtures, including security lighting, except street lamps, shall be aimed or shielded so that the direct illumination shall be confined to the property boundaries of the source. Particular care is to be taken to assure that the direct illumination does not fall onto or across any public or private street or road. Motion sensing lighting fixtures shall be properly adjusted, according to the manufacturer’s instructions, to turn off when detected motion ceases.