Clarkdale City Zoning Code

CHAPTER 8

OUTDOOR LIGHTING CODE

Section 8-010 Incorporation by Reference

A.R.S., Title 49, Chapter 7, Light Pollution § 49-1101 et seq., is hereby incorporated by reference. (Revised by Ordinance #438 on 12/10/24; effective 1/10/25; prior code § 8-1)

Section 8-020 Mission Statement

To afford every citizen of Clarkdale the flexibility to engage in the pursuit of safe, inexpensive lighting practices for the purpose of commercial and private use without being impeded upon or impeding upon other citizens desiring a more pristine nighttime environment free from light pollution, waste, trespass, or clutter while providing nighttime safety, security and productivity. (Revised by Ordinance #438 on 12/10/24; effective 1/10/25; prior code § 8-2)

Section 8-030 Purpose and Intent

A. The use of outdoor lighting is often necessary for adequate nighttime safety and utility, but common lighting practices can also interfere with other legitimate public concerns. Principal among these concerns are:

1. The degradation of the nighttime visual environment by production of unsightly and dangerous glare;

2. Unnecessary waste of energy and resources in the production of too much light or wasted light;

3. Interference in the use or enjoyment of property which is not intended to be illuminated at night; and

4. The loss of the often-neglected scenic view of the night sky due to increased urban skyglow.

It is hereby recognized that these different interests, those of safety and utility and those of aesthetic appearance, need not compete. Good modern lighting practices can provide adequate light for safety and utility without excessive glare or light pollution. In nearly all cases, careful attention to questions of when, where and how much lighting is needed, will lead to better lighting practice from all viewpoints.

B. It is also recognized that the topography and atmospheric conditions in northern Arizona are uniquely suited for government, military, commercial, and private astronomical observation in the area, and that unnecessary or excessive use of outdoor nighttime lighting has an adverse impact on astronomical observation in the area, and that unnecessary or excessive uses of outdoor nighttime lighting has an adverse impact on astronomical observation, even at relatively distant observatories.

C. Accordingly, it is the intent of this section of the Zoning Ordinance to encourage lighting practices and systems which will minimize light pollution, glare, light trespass, and conserve energy while maintaining nighttime safety, utility, security and productivity. (Revised by Ordinance #438 on 12/10/24; effective 1/10/25; prior code § 8-3)

Section 8-040 Conflicting Regulations

A. In the event of conflict between the regulations set forth in this section of this chapter and any other regulations applicable to the same area, the more stringent limitations of requirement shall govern. (Prior code § 8-4)

Section 8-050 Approved Materials and Methods of Construction or Installation/Operation

A. The provisions of this section of the Zoning Ordinance are not intended to prevent the use of any design, material or method of installation or operation not specifically prescribed by this chapter, provided any such alternate has been approved.

B. The Planning Director may approve any such proposed alternate provided that such alternate:

1. Provides at least equivalence to the applicable specific requirements of this chapter; and

2. Is otherwise satisfactory and complies with the intent of this chapter. (Prior code § 8-5)

Section 8-060 Preferred Source

A. Due to their high energy efficiency, long life and spectral characteristics, low- pressure Sodium (LPS) lamps are the preferred illuminations source for outdoor lighting throughout the Town of Clarkdale. (Prior code § 8-6)

Section 8-070 Lighting Requirements

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:

1. Are provided with internal or external glare control louvers, or both, and installed so as to minimize uplight and off-site light trespass as required in Section 8-130.A.10; and

2. Are installed and maintained with aiming angles that permit no greater than two percent (2%) of the light emitted by each fixture to project above the horizontal.

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:

Shielding/Use Code: A = allowed, unshielded, F = allowed fully shielded

LAMP TYPE	SHIELDING
Class 1, 2 and 3 lighting
All lamp types above 2,050 lumens	F (See Note #1)
All types below 2,050 lumens	A (See Note #2)
All neon tube lighting	F
Lamps in motion sensing security lights (Section 8-130.A.14)	A (subsection C above)

Note #1: Examples of lamp types of 2,050 lumens and below (the acceptability of a particular light is decided by its lumen output, not wattage, check manufacturer’s specifications):

a. 100-watt standard incandescent and less.

b. 100-watt midbreak tungsten-halogen (quartz) and less.

c. 25-watt T-12 cool white fluorescent and less.

d. 18-watt low-pressure sodium and less.

Note #2: Lights shall be shielded whenever feasible to minimize light spilled into the night sky or adjacent properties. Unshielded light (all types) are limited to a minimum of 5,500 lumens per net acre (see subsection J above). Residential parcels and development projects containing one net acre or less are allowed 5,500 lumens of unshielded light (all classes).

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 on 2/25/20; Revised by Ordinance #403 on 2/25/20; effective 3/26/20; prior code § 8-7)

Section 8-080 Parking Lot Lighting Standards

A. Lighting Standards (poles) shall be sized in such a manner that the top of any luminary does not exceed twenty-four (24) feet above adjacent grade, unless otherwise approved for new projects. (Revised by Ordinance #438 on 12/10/24; effective 1/10/25; prior code § 8-8)

Section 8-090 Temporary Lighting Permits

A. The Community Development Director may grant a permit for temporary lighting if he/she finds all of the following:

1. The purpose for which the lighting is proposed is not intended to extend beyond (30) days,

2. The proposed lighting is designed in such a manner as to minimize light pollution as much as is feasible;

3. The proposed lighting will comply with the general intent of this chapter, and

4. The permit will be in the public interest.

B. The Community Development Director shall rule on the application within five (5) business days from the date of submission of the request and notify the applicant in writing of his/her decision. The Planning Director may grant one (1) renewal of the permit for an additional thirty (30) days if he or she finds that, because of an unanticipated change in circumstances, a renewal would be in the public interest. The Community Development Director is not authorized to grant more than one (1) temporary permit and one renewal for the same property within one (1) calendar year. (Prior code § 8-9)

Section 8-100 Nonconforming Uses

A. Mercury vapor lamps in use for outdoor lighting on the effective date of this chapter shall not be so used after January 1, 2005.

B. Bottom or side-mounted outdoor advertising sign lighting shall not be used after January 1, 2005.

C. No outdoor lighting fixture or use which was lawfully installed or implemented prior to the enactment of this chapter shall be required to be removed or modified except as expressly provided herein; however, no modification or replacement shall be made to a non-conforming fixture unless the fixture thereafter conforms to the provisions of this chapter, except that identical lamp replacement is allowed.

D. In the event that an outdoor lighting fixture is abandoned or is damaged to the point of requiring repairs for safe operation, the repaired or replacement fixture shall comply with the provisions of this chapter. Commercial light installations that are removed or relocated during a building remodel or expansion will be required to meet the provisions of this chapter. (Prior code § 8-10)

Section 8-110 Variances

Any person desiring to install an outdoor lighting fixture in violation of this chapter may apply to the Board of Adjustment for a variance from the regulations in question. Such variances shall be allowed only as provided by Section 17-2-2.C of the Town Code.

A. Whenever a person is required to obtain a building or electrical permit for outdoor lighting or signage, a conditional use permit, subdivision approval or any development plan needing Town approval, including all Town projects, or whenever a person requests rezoning, the applicant shall, as a part of said application, submit sufficient information to enable the Community Development Director to determine whether the proposed lighting will comply with this chapter. All commercial remodeling or expansion of current buildings will be subject to review and approval through design review and must comply with this chapter.

B. All applications, except those for single-family residences, shall include the following:

1. A site plan indicating the proposed location, type and size of all outdoor lighting fixtures;

2. A description of each illuminating device, fixture, lamp, support and shield. This description may include, but is not limited to, manufacturer’s catalog cuts and drawings (including sections where required), lamp types and lumen outputs; and

3. Such other information as the Community Development Director may determine is necessary to ensure compliance with this chapter. For large developments this may include a single detailed sheet which specifically lists all fixtures and outputs for the entire project to enable the Community Development Department to determine compliance to this chapter.

C. If the Community Development Director determines that the proposed lighting does not comply with this chapter, the permit shall not be issued or the plan approved. (Revised by Ordinance #438 on 12/10/24; effective 1/10/25; prior code § 8-11)

Section 8-130 Definitions

A. As used in this chapter, unless the context clearly indicates otherwise, certain words and phrases shall mean the following:

1. Discontinued: means the discontinuation of use for a period of six (6) months.

2. Class 1 Lighting: means all outdoor lighting used for but not limited to outdoor sales or eating areas, assembly or repair areas, advertising and other signs, recreational facilities and other similar applications where color rendition is important.

3. Class 2 Lighting: means all outdoor lighting used for but not limited to illumination for walkways, roadways, equipment yards, parking lots and outdoor security where general illumination of the grounds is the primary concern.

4. Class 3 Lighting: means any outdoor lighting used for decorative effects, including but not limited to architectural illuminations, flag monument lighting, and illumination of trees, bushes, etc.

5. Planning Director: means the Planning Director for the Town of Clarkdale or his/her representative.

6. Development Project: means any residential, commercial, industrial, mixed use subdivision plan, individual building development or remodeling plan which is submitted to the Town for approval.

7. Direct Illumination: means illumination resulting from light emitted directly from a lamp. Luminary or reflector, not light diffused through translucent signs or reflected from other surfaces such as the ground or building faces.

8. Fully Shielded Fixture: means that fixtures are shielded in such a manner that light rays emitted by the fixture, either directly from the lamp or indirectly from the fixture, are projected below a horizontal plane running through the lowest point on the fixture where light is emitted.

Examples of fixtures that are Fully Shielded:

Examples of fixtures that are NOT Fully Shielded:

9. Installed: means attached, or fixed in place, whether or not connected to a power source.

10. Light Trespass: is spill light falling over property lines that illuminates adjacent grounds or buildings in an objectionable manner.

11. Lumen: is the unit used to measure the actual amount of visible light, which is produced by a lamp as defined by the manufacturer. A lumen is the light produced by one candle.

12. Luminary: means the complete lighting assembly, less the support assembly.

13. Multi-class Lighting: means any other outdoor lighting used for more than one (1) purpose, such as security and decorations, when those purposes fall under the definitions for two (2) or more lighting classes as defined for Class 1,2, and 3 Lighting above.

14. Motions Sensing Security Lighting: means a fixture designed, and properly adjusted, to illuminate an area around a residence or other building by means of switching on a lamp when motion is detected inside the area or perimeter, and switching the lamp off when the detected motion ceases.

15. Neon Lighting: means lighting using luminous gas filled tubes often formed into text, symbols or decorative elements. Neon Lighting includes tubes with typical diameters of 10 to 20 millimeters filled with neon, argon, xenon, or other gasses and producing various colors of light. Not included are replaceable T-8 (1 inch diameter) and T-12 (1.5 inch diameter) or PL (“compact”) fluorescent tubes.

16. Net Acreage: means the remaining ground area of a parcel after deleting all portions for proposed and existing public rights-of-way and undeveloped area.

17. Outdoor Light Fixtures: means all outdoor illuminating devices, reflective surfaces, lamps and other devices, either permanently installed or portable, which are used for illumination or advertisement. Such devices shall include, but are not limited to, search, spot and floodlights for:

a. Buildings and structures

b. Recreational areas

c. Parking lot lighting

d. Landscape and architectural lighting

e. Billboards and other signs (advertising or other)

f. Street lighting

g. Product display area lighting

h. Building overhangs and open canopies

i. Security lighting

18. Outdoor Recreation Facility: means an area designed for active recreation, whether publicly or privately owned, including but not limited to parks, baseball, soccer or football fields, golf courses, tennis courts and swimming pools.

19. Person: includes a corporation, company, partnership, firm, association or society, as well as an individual.

20. Security Lighting: is lighting designed to illuminate a property or grounds for the purpose of visual security. This includes full shielded lighting designed to be left on during the night time hours as well as motion sensing lighting fixtures.

21. Temporary Lighting: means lighting which does not conform to the provisions of this chapter and which will not be used for more than one thirty (30) day period within a calendar year. Temporary lighting is intended for uses which by their nature are of limited duration; e.g. holiday decorations, civic events, or construction projects.

22. Total Outdoor Light Output: means the maximum total amount of light, measured in lumens, from all 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 value to be considered.

23. Unshielded Fixture: means a fixture that allows light to be emitted above the horizontal directly from the lamp or indirectly from the fixture or a reflector.

24. Watt: is the unit used to measure the electrical power consumption (not the light output) of a lamp. (Prior code § 8-13)