A. Outdoor floodlighting by floodlight projections above the horizontal is prohibited except for lamps specifically exempted under subsections K and R below and properly adjusted motion sensing security lighting fixtures as defined in Section 8-130.A.14.

B. All light fixtures which are required to be shielded shall be installed in such a manner that the shielding complies with the definition of fully shielded fixtures. Wiring to light poles and standards must be buried underground.

C. All light fixtures, including security lighting, except street lamps, shall be aimed or shielded so that the direction illumination shall be confined to the property boundaries of the source. Particular care is to be taken to assure that the direct illuminations 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. Direct or indirect lighting must not exceed one-half (0.5) foot candle (fc) at the lot line or upon abutting residential properties.

D. No new mercury vapor light fixtures nor replacement equipment other than bulbs shall be sold or installed for use as outdoor lighting within the Town of Clarkdale after the effective date of this Code and the use of mercury vapor light fixtures for outdoor lighting is prohibited after January 1, 2005.

E. Search Light. Laser source lights, strobe or flashing lights, motion or illusion lights or any similar high-intensity light shall not be permitted, except in emergencies by police and fire personnel at their direction.

F. Class 1 lighting, including, but not limited to, sales, service, commercial, assembly, repair, maintenance, and industrial areas, may only continue in operations until 10:00 p.m., or for as long as the area is in active use. This provision is not applicable to fixtures lawfully installed or implemented prior to the adoption of the ordinance codified in this section.

G. Class 2 lighting shall have no time restrictions unless stipulated as a condition of approval for new projects.

H. Class 3 lighting, except for flagpole lighting, must be extinguished after 10:00 p.m. or at the close of business, whichever is later, except that low-wattage holiday decorations may remain on all night from November 15th to January 15th.

I. Multi-class lighting, except for security lights, must conform to the time limitations of the most strict class.

J. Except as permitted in subsections K, L, and M below, total outdoor light output, excluding streetlights used for illumination of public rights-of-way, of any development project shall not exceed one hundred thousand (100,000) lumens per net acre, averaged over the entire property. No more than five thousand five hundred (5,500) lumens per net acre may be accounted for by lamps in unshielded fixtures permitted in subsection R below.

K. Lighting, in all cases, for all outdoor athletic fields, courts, tracks or ranges shall be considered Class 1 (Color Rendition). When the proposed lumens per acre exceeds the limits of subsection J above, the installation shall be designed to achieve no greater than the minimum illuminance levels for the activity as recommended by the Illuminating Engineering Society of North America (IEDNA). The installation shall also limit off-site spill (off the parcel containing the sport facility) to a maximum of one-half (0.5) fc at any location on any residential property, as measurable from any orientation of the measuring device. Every such lighting system design shall be certified by an Arizona registered engineer as conforming to all applicable restrictions of this section.

All events shall be scheduled so as to complete all activity by 10:00 p.m. Illumination of the playing field, court, track or range shall be permitted after 10:00 p.m. only to conclude a scheduled event that was unable to conclude before 10:00 p.m. due to unusual circumstances. Fully shielded lighting shall be required for fields designed for amateur, recreational or nonprofessional sports activity. For professional level sports facilities where fully shielded fixtures are not utilized, acceptable luminaries shall include those which:

L. Lighting for outdoor display lots shall be considered Class 1 (Color Rendition), and shall conform to the lumens per acre limits of subsection J above except as follows:

All such lighting shall utilize full shielded luminaries that are installed in a fashion that maintains the fully shielded characteristics. When the proposed lumens per acre exceed the limits of subsection J above, the installation shall be designed to achieve no greater than the minimum illuminance levels for the activity as recommended by the Illumination Engineering Society of North America (IESNA). The installation shall also limit off-site spill (off the parcel containing the display lot) to a maximum of one-half (0.5) fc at any location on any nonresidential property, and one-twentieth (0.05) fc at any location on any residential property, as measurable from any orientation of the measuring device. Every such lighting system design shall be certified by an Arizona registered engineer as conforming to all applicable restrictions of this section. Outdoor display lot lighting exceeding the lumens per acre cap of subsection J above shall be turned off at 10:00 p.m. or within thirty (30) minutes after closing of business or activity, whichever is later. Lighting in the outdoor display lot after this time shall be limited to Class 2 lighting, and shall conform to all restrictions of this section applicable for this class, including the lumens per acre caps in subsection J above.

M. Lighting for service station or similar canopies shall be considered Class 1 lighting. All luminaries shall be flush with the lower surface of canopies and utilize flat glass or plastic covers. The total light output used for illuminating service station canopies, defined as the sum of under-canopy initial bare-lamp outputs in lumens, shall not exceed forty (40) lumens per square foot of canopy.

All lighting mounted under the canopy, except internally illuminated signs, shall be included in the total. Fifty percent (50%) of the lumen output of all lamps mounted within or under a canopy, except internally illuminated signs, is included in the lumen caps in subsection J above.

N. Lighting used for all externally illuminated signs shall conform to all restrictions of this section, shall be fully shielded, and shall be turned off at 10:00 p.m. or at the close of business, whichever is later.

O. All site lighting not directly associated with the special uses as permitted in Section 8-130.A.14 and subsections K, L, and M above shall conform to all lighting standards described in this section.

P. Outdoor internally illuminated advertising signs shall either be constructed with an opaque background and translucent letters and symbols or with a colored (not white, cream, off-white, yellow or other light color) translucent background, with either translucent or opaque letters and symbols. Opaque means only that the material must not transmit light from the internal illuminations source: the color of such opaque backgrounds is not restricted by this section. Lamps used for internal illumination of such signs shall not be included in the lumens per net acre limit set in subsection J above. All illuminated signs shall be turned off at 10:00 p.m. or at the close of business, whichever is later.

Q. All outdoor neon lighting shall be fully shielded and shall be turned off at 10:00 p.m. or at the close of business, whichever is later.

R. The requirements for lamp source and shielding of light emissions for outdoor light fixtures are as follows:

S. Uses other than single-family residential must have adequate exterior lighting to provide for their safe use during nighttime hours if such use is contemplated. (Revised by Resolution #1621; Revised by Ordinance #403; prior code §  8-7)