A. Guidelines; Objectives Of Properly Designed Lighting:
1. To contribute to the safe and efficient use of a development site;
2. To contribute to the site security;
3. To complement and reinforce the architecture and site design character;
4. To keep on site parking lot lighting fixtures and illumination levels consistent throughout the parking lot;
5. To prevent casting glare onto adjacent lots and streets;
6. To encourage conformity with energy saving guidelines; and
7. Architecturally, to articulate and animate the particular building design, as well as provide the required functional lighting for safety and clarity of pedestrian movement.
B. Definitions: See section 11-2-2 of this title.
C. Standards: The following standards are required of all exterior lighting installed on sites immediately adjacent to any residence district; provided, however, that such standards are not intended to apply to public street lighting:
1. The maximum height of a light post permitted is dependent on the amount of cutoff provided in order to protect against excessive glare and light intruding onto adjacent residence properties.
2. When a light source has no cutoff:
a. Maximum permitted illumination equals one-fourth (0.25) foot-candle.
b. Maximum permitted height of the post equals ten feet (10').
3. When a light source has total cutoff of an angle greater than or equal to ninety degrees (90°):
a. Maximum permitted illumination equals one-half (0.50) foot- candle.
b. Maximum permitted height of the post equals fifteen feet (15').
4. When a light source has a total cutoff of light at an angle less than ninety degrees (90°) and is located so that the light source is completely shielded from the direct view of an observer five feet (5') above the ground at the point where the cutoff angle intersects the ground:
a. Maximum permitted illumination equals one foot-candle. (Ord. 99-02, 1-7-1999)
b. Maximum permitted height of the post equals twenty feet (20'). (Ord. 99-02, 1-7-1999; amd. 2011 Code)
5. Notwithstanding any other provision of this section to the contrary:
a. No flickering or flashing lights shall be permitted.
b. Light sources shall not be located within the required side or rear yard or in a portion of front yard which includes part of the side yard as extended adjacent to any residence district.
c. The fixture illuminant (bulb) shall not be visible from the property line adjacent to any residence district.
d. The maximum permitted illumination onto a residence lot shall not exceed one-tenth (0.1) foot-candle, except for right of way lighting.
6. Lighting levels shall be measured in foot-candles with a direct reading, portable light meter. The meter sensor shall be mounted not more than six inches (6") above the ground line in a horizontal position. Readings shall be taken only after the cell has been exposed long enough to provide a constant reading. Measurements shall be made after dark with the light sources in question on, then with the same sources off. The difference between the two (2) readings shall be compared to the maximum permitted illumination. This procedure eliminates the effects of moonlight and other ambient light.
7. At the time any exterior lighting is installed or substantially modified, an exterior lighting plan shall be submitted to the zoning administrator in order to determine whether the requirements of this section have been met.
D. Exemptions To Landscaping And Lighting Requirements: Where side or rear yard setbacks adjacent to a residence district are required and the landscaping and lighting standards are required, but not existing, the property shall not be subject to such regulations and standards until such time as a building permit is required. (Ord. 99-02, 1-7-1999)