Item 9A (2)
Department of Planning & Development Services
S T A F F R E P O R T
January 9, 2013
PROJECT: Lighting Variance, Carroll I.S.D. Baseball and Softball Fields
EXECUTIVE
SUMMARY: Carroll I.S.D. is requesting a variance to Lighting Ordinance No. 693, as amended, to
allow field lighting at the baseball and softball fields at CISD Senior High School on
property located at 1501 W. Southlake Blvd. and described as Lot 1, Block 1, Carroll
Senior High School Addition, an addition to the City of Southlake, Tarrant County,
Texas.
REQUEST: Carroll I.S.D. is requesting a variance to Lighting Ordinance No. 693, as amended, to
allow field lighting at the baseball and softball fields at the CISD Senior High School.
The maximum intensity of any lighting permitted by the lighting ordinance is 20 foot-
candles. The maximum permitted horizontal spill-over lighting along residential
property lines is 0.2 foot-candles and the maximum permitted vertical spill-over
lighting along residential property lines is 0.5 foot-candles. The maximum luminance
value permitted to be projected onto adjacent property zoned single-family residential
is 0.02. Additionally, the lighting ordinance requires all lighting to be either high
pressure sodium lights or neutral or warm correlated color temperature Light Emitting
Diode (LED) lights (temperature equal to or less than 4300 degrees Kelvin) or other
lights giving a similar soft lighting effect. The proposed field lighting will be a metal
halide type light (white). The variances requested are as follows:
The variance request is as follows:
Lighting Regulation Allowed Maximum Maximum
Requested for Requested for
Baseball Field Softball Field
Intensity 20 foot-candles 60 foot-candles 69 foot-candles
Horizontal Spill-over Adjacent 0.2 foot-candles 2.73 foot-candles 0.6 foot-candles
to Residential Property
Vertical Spill-over Adjacent to 0.5 foot-candles 5.84 foot-candles 2.09 foot-candles
Residential Property
Luminance 0.02 4.38 0.77
Type of Lighting High Pressure Sodium, Metal Halide type Metal Halide type
LED or lighting having lighting lighting
a similar soft lighting
effect
The City Council, after receiving a recommendation from the Planning and Zoning
Commission, may grant a modification or variance from the provisions of the
Lighting Ordinance in any of the following circumstances:
1) Upon finding that strict application of the Ordinance would not forward
the purposes of this Ordinance or that alternatives proposed by the
applicant would satisfy the purposes of this Ordinance at least to an
equivalent degree.
2) Upon finding that an outdoor light or system of outdoor lights required for a
particular use cannot reasonably comply with the standard and provide
sufficient illumination for safety or security as determined by recommended
practices adopted by the Illuminating Engineering Society of North
American for the particular use or other evidence submitted by a
professional engineer or other professional organization.
3) Upon finding where a literal application or enforcement of the regulations
would result in practical difficulty or unnecessary hardship and the relief
granted would not be contrary to the public interest or the intent but do
substantial justice and be in accordance with the spirit of the regulations
and this Ordinance.
ACTION NEEDED: Consider variance request.
ATTACHMENTS: (A) Background Information
(B) Variance Request Letter
(C) Link to PowerPoint Presentation with Photometric Plans
(D) Lighting Ordinance No. 693-C
(E) Half-size plans (for Commission and Council Members Only)
STAFF CONTACT: Ken Baker (817) 748-8067
Dennis Killough (817) 748-8072
BACKGROUND INFORMATION
APPLICANT/OWNER: Carroll I.S.D.
PROPERTY SITUATION: 1501 W. Southlake Blvd.
STRATEGIC LINK: Quality Development
PLANNING AND ZONING
COMMISSION ACTION: January 3, 2013; A motion to deny the variance was approved (3-1).
STAFF COMMENTS: The variance request letter and photometric plans are attached to this report.
Attachment A
Page 1
VARIANCE REQUEST LETTER
Attachment B
Page 1
Attachment B
Page 2
Attachment B
Page 3
JULIE THANNUM E-MAIL
Attachment B
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Attachment B
Page 5
LINK TO POWERPOINT PRESENTATION WITH PHOTOMETRIC PLANS
Attachment C
Page 1
Attachment D
Page 1
Attachment D
Page 2
Attachment D
Page 3
Attachment D
Page 4
Attachment D
Page 5
Attachment D
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Attachment D
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Attachment D
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Attachment D
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Attachment D
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Attachment D
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Attachment D
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Attachment D
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