Levels of illumination to achieve a certain function or desired effect should also reduce or eliminate the hazardous aspects and nuisance of glare and light spillage. All exterior lighting, with the exception of street lighting, that is used around buildings, recreation areas, parking lots, and signs, shall be designed to protect against the spillage of light to adjacent properties.

Effective on: 1/1/1901

1. A.
   Outdoor lighting shall not shine directly into the yard or into the windows of an adjacent residence.
2. B.
   Outdoor lighting shall be designed, located, and mounted at heights no greater than 18 feet above grade for pedestrian lights, or 35 feet above grade for street or parking area lights.
3. C.
   Light sources may be located within the perimeter landscaped area and along pedestrian walkways providing provision Subsection 11.2.E is met.
4. D.
   All outdoor and parking lot lighting fixtures, including: metal halide, mercury vapor, fluorescent, induction, white high-pressure sodium and color-improved high-pressure sodium lamps used in non-cutoff fixtures shall be coated with an internal white frosting inside the outer lamp envelope.
5. E.
   All lighting must be located at least ten feet from property lines defining rear and side yards or required perimeter landscaped areas required by this Code.
6. F.
   All outdoor lighting shall be designed and located such that the maximum illumination measured in foot-candles at the property line shall not exceed one foot candle. The average intensity illumination for outdoor lighting shall not exceed four foot candles in intensity (except where noted) as measured at grade. Fixtures should be placed to provide uniform distribution of light and to avoid intense lighting that produces excessive glare. General parking lot lighting shall not exceed a maintained average of two and one-half foot-candles.
7. G.
   Lighting fixtures scaled for pedestrian activities shall provide for uniform lighting distribution to produce minimal shadows.
8. H.
   Floodlights, spotlights or any other similar lighting shall not be used to illuminate buildings or other site features unless approved as an integral architectural element on the development plan. On site lighting may be used to accent architectural elements and not be used to illuminate entire portions of building(s). Floodlights or other type of lighting attached to light poles that illuminate the site and/or building(s) are prohibited.
9. I.
   Outdoor illumination of building, landscaping and signs:

   1. 1.
      Exterior lighting should be integrated with the architectural character of the building. To avoid light spillage, only full cutoff fixtures shall be used.
   2. 2.
      The unshielded outdoor illumination of any building or landscaping is prohibited.
   3. 3.
      Lighting fixtures used to illuminate an outdoor advertising sign either shall be by directed ground lighting sign or mounted on the top of the sign and shall point downward, and shall comply with shielding requirements.
   4. 4.
      Illumination of signs shall be limited to ten lumens per square foot.
10. J.
    No flickering, rotating, or flashing lights, or search lights shall be permitted.
11. K.
    Wall packs on buildings may be used at entrances to a building to light unsafe areas. They are not intended to draw attention to the building or provide general building or site lighting. Wall Packs on the exterior of the building shall be fully shielded (true cut-off type-bulb or light source not visible from off-site) to direct the light downward and be of low wattage (preferably 100 watts or lower). Other accent lighting projected onto buildings may be allowed provided that it is approved through the development plan process.
12. L.
    Gas station/convenience store aprons and canopies:

    1. 1.
       The lighting fixture bulbs shall be recessed into a canopy ceiling so that the bottom of the fixture is flush with the ceiling so that light is restrained to no more than 85 degrees from vertical.
    2. 2.
       As an alternative to recessed ceiling lights, indirect lighting may be used where the light is directed upward and then reflected down from the underside of the canopy. In this case, light fixtures shall be shielded so that direct illumination is focused exclusively on the underside of the canopy.
    3. 3.
       Lights shall not be mounted on the top or sides (facia) of the canopy, and the sides of the canopy shall not be externally illuminated.
    4. 4.
       The lighting for new facilities (pump islands and under canopies) shall have a minimum of 1.0 foot-candle at grade and not exceed the average horizontal illumination cannot exceed 10 foot-candles at grade level. These standards are based on the IESNA (Illuminating Engineering Society of North America) RP-33, Lighting for Exterior Environments.
13. M.
    Canopies used for building accents over doors, windows, etc. shall not be internally lit (i.e. from underneath or behind the canopy).

( Ord. No. 2020-34 , § 1(Exh. A), 12-7-20)

Effective on: 1/1/1901

The quantity of fixtures to be provided shall be based upon the desired level of uniform illumination as established by the current standards of the IESNA. Fixture locations should be chosen to minimize the hazards of glare.

The level of illumination shall be based upon the primary activity in each area to be lighted. The standards for various activities prescribed by the following Illuminating Engineering Society chart represent a number of exterior lighting uses for general reference. Foot-candle designations represent measurements for the average intensity at grade.

Effective on: 1/1/1901

Effective on: 1/1/1901

1. A.
   Minimum average street light spacing:

   1. 1.
      Single family homes and duplex lots (greater than 100 feet wide): 500 feet.
   2. 2.
      Single family homes and duplex lots (less than 100 feet wide): 300 feet.
   3. 3.
      Multi-family uses: 150 feet.
   4. 4.
      All other uses: 300 feet.
2. B.
   Preference in placement shall be given to street intersections and street curves.
3. C.
   Pedestrian lighting should be prioritized over automobile lighting. Lighting should be placed in a manner to limit the casting of shadows on sidewalks.
4. D.
   All lighting shall utilize full-cut-off fixture.
5. E.
   Alleys are excluded from the spacing and placing requirements of this chapter but are encouraged to be illuminated using private security lights, wall packs, or similar low level decorative lighting.
6. F.
   The requirement that street lights be provided may be waived by the approving authority in mountainous areas where street lights would be visible from the valley floor.

Effective on: 1/1/1901