ning and Zoning Administrator . The City of Sun Valley Planning and Zoning Administrator .
low . The overhead glow from light emitted sideways and upwards . Skyglow is caused by the reflection and ering of light by dust , water vapor and other particles suspended in the atmosphere .
porary lighting . Lighting that is intended to be used for a special event for seven days or less , and temporary truction lighting .
slucent . The effect of a part or parts of a luminaire that provide ( s ) a barrier around the lamp that allows some light ss through the barrier in a diffused manner , such that the lamp cannot be clearly distinguished . ( See Figure 3 )
hielded . The luminaire only incorporates clear glass , which permits all light to escape . ( See Figure 5 ). ghting . Fully shielded lighting that is directed in such a manner as to shine light rays above the horizontal plane . wash . The reflectivity of artificial lighting from the exterior surface of a building or structure . -4 : General Provisions :
General Standards
1 . All exterior lighting shall be designed , located and lamped in order to prevent or minimize : a . Overlighting ; b . Energy waste ; c . Glare ; d . Light Trespass ; e . Skyglow .
2 . All non-essential exterior commercial , recreational , and residential lighting shall be turned off after business s and / or when not in use . Lights on a timer are encouraged . Sensor activated lights are encouraged to replace ing lighting that is desired for security purposes .
3 . Canopy lights , such as service station lighting or covered entries , shall be fully recessed or fully shielded so ensure that no light source is visible from or causes glare on public rights of way or adjacent properties . 4 . Area lights . All area lights shall be a minimum eighty-five ( 85 ) degree full cut-off type luminaires . 5 . Idaho Power shall not install any luminaires after the effective date of this Article that lights the public right ay without first receiving approval for any such application by the Lighting Administrator .
Use of Luminaires . No unshielded or clear glass luminaries shall be allowed ; all exterior lighting shall use full cut-off luminaires with the light source downcast and fully shielded , with the following exceptions : 1 . Luminaires that have a maximum output of one thousand ( 1,000 ) lumens per fixture ( equal to one sixty [ 60 ] incandescent lamp ) regardless of number of lamps , may be partially shielded provided the luminaire has an ue top or is under a solid overhang . ( See Figure 3 )
2 . Floodlights with external shielding shall be angled provided that no light is directed above a thirty ( 30 ) ee angle measured from the vertical line from the center of the light extended to the ground , and only if the naire does not cause glare or light to shine on adjacent property or public rights-of-way ( see Figure 6 ). Residential dlights must be turned off by 11:00 p . m . Photocells with timers that allow a floodlight to go on at dusk and off by 0 p . m . are encouraged .
3 . Residential holiday lighting is allowed from November 1st to March 15th . Flashing holiday lights on ential properties are prohibited . Holiday lights shall be turned off by 11:00 p . m .
4 . Commercial holiday lighting is allowed from November 1st to March 15th . Flashing holiday lights are ibited . Commercial holiday lights shall be turned off by 11:00 p . m . or the close of business , whichever is later .
5 . Sensor activated luminaires , provided : a . It is located in such a manner as to prevent glare an public right-of-way ; b . The luminaire is set to only go on when activated a has ceased ; c . The luminaire shall not be triggered by activity off 6 . All temporary emergency lighting needed by the Fire and P 7 . Lighting for flags provided the flag is a United States of Am mum lumen output is one thousand three hundred ( 1,300 ) lumens for lighting . The external beam shall minimize light trespass and
8 . Uplighting for landscaping and / or structures shall be revie all uplighting be fully captured for approval . All uplighting shall
9 . Lighting of radio , communication and navigation towers ; p ederal Aviation Administration ( FAA ) regulations can only be m ply with this Article . 10 . Neon Lights . Neon lights permitted pursuant to the sign o 11 . Luminaires used for playing fields and courts shall be exe isions of this Article are met and the light is used only while the f
12 . Non-residential luminaires may deviate from the requirem submitting for Planning and Zoning Commission approval a Des , detailing the specific reasons for the proposed deviation . Such a onstrates each of the following : i ) that the proposed deviation is appropriate to t neighborhood ; ii ) that the proposed deviation will not unreason of the surrounding neighborhood uses ; and iii ) that the proposed deviation will not unreason Exterior Lighting Regulations .
Commission may approve , deny , or approve with conditions any
Placement and Height of Luminaires
1 . Parking area luminaires shall be no taller than seventeen ( 1 t point . Parking area lights are encouraged to be greater in numb sed to fewer in number , higher in height and higher in lumens .
2 . Freestanding luminaires on private property in residential z ve feet ( 12 ’) from ground level to the top of the luminaire .
3 . Streetlights used on arterial roads may exceed twenty ( 20 ) Council , and only with a finding that exceeding 20 feet is necess ey .
4 . Luminaires used for playing fields shall be exempt from th is Article are met and the light is used only while the field is in u
Illuminance and Type of Lamp
1 . Illuminance levels for parking lots , sidewalks , and other w reestanding sidewalk lights ( not streetlights ) shall not exceed illu mmended Practices . The City of Sun Valley recognizes that not e
2 . Above ground parking lot lighting shall not exceed an over ior parking structure lighting shall not exceed the minimum secur NA Recommended Practices .
Appendix A : White Paper – Communities Addressing Light Pollution that Affect Nighttime Military Training