HomeMy Public PortalAbout120_030_4Ord 13A-2014 residential driveways MAYOR a CITY MANAGER
Jason Buelterman Diane Schleicher
CITY COUNCIL CITY CLERK
Wanda Doyle,Mayor Pro Tern Janet LeViner
Barry Brown i 1§)
Rob Callahan CITY ATTORNEY
Bill Garbett Edward M.Hughes
Monty Parks 40044 �
Paul Wolff
CITY OF TYBEE ISLAND
City Council Agenda Item Request
Agenda Item Requests and supporting documentation must be submitted to the Clerk of Council by
4:00PM on the Thursday prior to the next scheduled Council meeting, If this form is received after the
deadline, the item will be listed on the next scheduled agenda.
Council Meeting Date for Request: March 13, 2014
Item: Public Hearing—First Reading
Explanation: Text Amendment—Ordinance 13A-2014; Section 3-080, Off-street Parking Requirements; City
of Tybee Island, petitioner; consideration of amendment to residential driveway requirements
Budget Line Item Number (if applicable): N/A
Paper Work: Attached*
Audio/Video Presentation**
* Electronic submissions are requested but not required. Please email to
jleviner@cityoftybee.org.
** Audio/video presentations must be submitted to the IT department at City Hall
by 4:00PM on the Thursday prior to the scheduled meeting.
Submitted by: Dianne Otto
Phone/Email: (912) 472-5031 /dotto @cityoftybee.org
Comments:
Date given to Clerk of Council: March 6, 2014
* * *
P.O. Box 2749—403 Butler Avenue,Tybee Island, Georgia 31328-2749 *Certified
(866) 786-4573—FAX(866) 786-5737 , City of
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www.cityoftybee.org s��� £L��
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PLANNING COMMISSION
NOTICE OF DETERMINATION
Meeting date: February 18, 2014
Project Name/Description: Sections 3-080 — Off-street Parking Requirements
Action Requested: Text Amendment
Special Review Subdivision:
Site Plan Approval Sketch Plan Approval Conceptual
Zoning Variance Preliminary Plan Approval
Amendment to Zoning Map Final Plat Approval
Text Amendment to Land Development Code X Minor Subdivision Major Subdivision
Petitioner has met all documentation requirements, all external approval requirements, and
all code requirements, except for the following:
VOTE FOR AGAINST COMMENTS _
Bishop X
Borkowski X
Bramble X Motion to approve w ith changes
Livingston X
Major X Second
Marion Chair
McNaughton X
The Planning Commission recommen . ® Appro'val ❑ Denial ❑ Continued
Planning Commission Chair: Date: Z - i4 — f *1-
r
Planning & Zoning Manager: IP __, . %pi InI Date: -4 5 -- 14
PROPOSED ORDINANCE - REDLINE
Sec. 3-080. Off-street parking requirements.
(C)(5) For water quality purposes, all newly constructed driveways and replacements of more than 50 percent of
existing driveways serving residential uses shall be constructed of materials designed to allow retention of
the first one-inch of stormwater. A new driveway includes the initial placement of any material on bare soil.
Such new driveways and replacements of more than 50% of an existing driveway are subject to permitting
and inspection(s). A permit and inspection(s) are also required for repair of less than 50% of an improved
driveway. The retention requirement is based on a 24-hour, 25-year Type III SCS storm. A permit is
required for installation of a new or replacement driveway. An inspection is required of each layer prior to
the next layer being installed. The permit applicant shall be responsible for all engineering fees incurred by
the city for review of materials, even when a material is not approved. Acceptable materials include:
a. Stone must be either AASHTO #57, #67, #78, or #89 open-graded with no fines, or pea gravel with no
fines, or a combination of two or more. Graded aggregate base (also known as "crusher run" or "crush
and run") is not allowed.
b. Standard brick pavers are 4-inch by 8-inch with minimum 5/64-inch average continuous
joints/borders with eight 1/8-inch wide spacers per paver filled with masonry sand. See item (c) for
base and header requirements. If larger bricks are used, thereby creating less linear joint and surface
area joint, calculations by a Georgia licensed design professional must be reviewed and approved by
the city. See engineering fee information in paragraph 1.
c. Permeable interlocking concrete pavers (PICP) are solid structural units installed with openings as
described in the Coastal Stormwater Supplement (CSS) through which stormwater runoff can rapidly
pass into the underlying reservoir of a 4-inch minimum depth open-graded stone, no fines. Openings
may be filled only with pea gravel or larger stone, or with masonry sand. A concrete header curb or
paver/concrete block ribbon with a maximum width of 8-inches (flush or 1/8-inch higher than the
contained permeable pavement) must be installed around the perimeter of the pavers. Building
foundations and garage floors may serve as a portion of the perimeter. The edge of a paved road may
not serve as a perimeter. Headers and ribbons are included in the driveway measurements.
d. Ribbon driveway designs are normally constructed of concrete but other materials may be
considered. The ribbons are to be a maximum of 18-inches wide with a 1%-2% cross slope to route
runoff to adjacent im pervious areas rather than down the strips to the street. The area between the
strips may be either grass or stone as described in item (a). The area between the drive strips is to be
flush or 1/8-inch below the driving strip to encourage the percolation of stormwater runoff between the
driving strips.
e. Concrete grid pavers (CGP) are precast concrete units that allow rainfall and stormwater runoff to
pass through large openings that are filled with pea gravel, sand or topsoil and turf. A concrete header
curb or brick/concrete block ribbon with a maximum width of 12-inches (flush or 1/8-inch higher than
the contained permeable pavement) must be installed around the perimeter of the permeable
pavement. Building foundations and garage floors may serve as a portion of the perimeter. The edge of
a paved road may not serve as a perimeter. Header and ribbons are included in the driveway
measurements.
f. Plastic grid pavers (PGP) consist of flexible, interlocking plastic units that allow rainfall and
stormwater runoff to pass through large openings that are filled with gravel, sand or topsoil and turf. A
header curb is required and is included in the driveway measurement.
g. Pervious concrete (also known as porous concrete) is similar to conventional concrete in structure
and form, but consists of a special open-graded surface course, typically 4- to 8-inches thick, that is
bound together with portland cement.
h. Porous asphalt is similar to pervious concrete, and consists of a special open-graded surface course
bound together by asphalt cement.
For all other proposed materials, calculations are required from a Georgia licensed design professional
demonstrating compliance with the retention requirement of this ordinance.
03/03/2014
ORDINANCE NO. 13A-2014
AN ORDINANCE TO AMEND THE CODE OF ORDINANCES
PERTAINING TO SECTION 3-080(C)(5) REGARDING
OFF-STREET PARKING REQUIREMENTS
FOR THE CITY OF TYBEE ISLAND, GEORGIA
WHEREAS, the duly elected governing authority for the City of Tybee Island, Georgia,
is authorized under Article 9, Section 2, Paragraph 3 of the Constitution of the State of Georgia
to adopt reasonable ordinances to protect and improve the public health, safety, and welfare of
the citizens of Tybee Island, Georgia, and
WHEREAS, the duly elected governing authority for the City of Tybee Island, Georgia,
is the Mayor and Council thereof, and
WHEREAS, the governing authority desires to adopt ordinances under its police, zoning,
and home rule powers, and
WHEREAS, the City of Tybee Island so as to amend Section 3-080(C)(5), Off-street
parking requirements, so as to clarify its terms; and
NOW, THEREFORE, it is hereby ordained by the governing authority of the City
of Tybee Island that Section 3-080(C)(5) of the Code of Ordinances of the City of Tybee Island
shall be amended.
SECTION 1
Section 3-080(C)(5), shall be amended so that hereafter it will read as follows:
Sec. 3-080. - Off-street parking requirements.
(C)Control of access to structures used for residential purposes including but not limited to single
family, duplex, triplex, two family, multifamily, townhomes, apartments, time shares, and
condominiums whether owner occupied or held for rental. In order to promote the safety of
motorists and pedestrians, the following regulations shall apply to all newly constructed
driveways:
(5) For water quality purposes, all newly constructed driveways and replacements of more than
50 percent of existing driveways serving residential uses shall be constructed of materials
designed to allow retention of the first one-inch of stormwater. A new driveway includes the
initial placement of any material on bare soil. Such new driveways and replacements of
more than 50% of an existing driveway are subject to permitting and inspection(s). A permit
and inspection(s) are also required for repair of less than 50% of an improved driveway. The
retention requirement is based on a 24-hour, 25-year Tybee Ill SCS storm. A permit is
required for installation of a new or replacement driveway. An inspection is required of each
layer prior to the next layer being installed. The permit applicant shall be responsible for all
engineering fees incurred by the city for review of materials, even when a material is not
approved. Acceptable materials include:
a. Stone must be either AASHTO #57, #67, #78, or #89 open graded with no fines, or
pea gravel with no fines, or a combination of two or more. Graded aggregate base (also
known as "crusher run" or"crush and run") is not allowed.
b. Standard brick pavers are 4-inch by 8-inch with minimum 5/64-inch average
continuous joints/borders with eight 1/8-inch wide spacers per paver filled with masonry
sand. See item (c) for base and header requirements. If larger bricks are used, thereby
creating less linear joint and surface area joint, calculations by a Georgia licensed design
professional must be reviewed and approved by the city. See engineering fee information in
paragraph 1.
c. Permeable interlocking concrete pavers (PICP) are solid structural units installed
with openings as described in the Coastal Stormwater Supplement (CSS) through which
stormwater runoff can rapidly pass into the underlying reservoir of a 4-inch minimum depth
open-graded stone, no fines. Openings may be filled only with pea gravel or larger stone, or
with masonry sand. A concrete header curb or paver/concrete block ribbon with a maximum
width of 8-inches (flush or 1/8-inch higher than the contained permeable pavement) must be
installed around the perimeter of the pavers. Building foundations and garage floors may
serve as a portion of the perimeter. The edge of a paved road may not serve as a perimeter.
Headers and ribbons are included in the driveway measurements.
d. Ribbon driveway designs are normally constructed of concrete but other materials
may be considered. The ribbons are to be a maximum of 18-inches wide with a 1%-2%
cross slope to route runoff to adjacent pervious areas rather than down the strips to the
street. The area between the strips may be either grass or stone as described in item (a).
The area between the drive strips is to be flush or 1/8-inch below the driving strip to
encourage the percolation of stormwater runoff between the driving strips.
e. Concrete grid pavers (CGP) are precast concrete units that allow rainfall and
stormwater runoff to pass through large openings that are filled with pea gravel, sand or
topsoil and turf. A concrete header curb or brick/concrete block ribbon with a maximum
width of 12-inches (flush or 1/8-inch higher than the contained permeable pavement) must
be installed around the perimeter of the permeable pavement. Building foundations and
garage floors may serve as a portion of the perimeter. The edge of a paved road may not
serve as a perimeter. Header and ribbons are included in the driveway measurements.
f. Plastic grid pavers (PGP) consist of flexible, interlocking plastic units that allow
rainfall and stormwater runoff to pass through large openings that are filled with gravel, sand
or topsoil and turf. A header curb is required and is included in the driveway measurement.
g. Pervious concrete (also known as porous concrete) is similar to conventional
concrete in structure and form, but consists of a special open-graded surface course,
typically 4-to 8-inches thick, that is bound together with portland cement.
h. Porous asphalt is similar to pervious concrete, and consists of a special open-
graded surface course bound together by asphalt cement.
For all other proposed materials, calculations are required from a Georgia licensed design
professional demonstrating compliance with the retention requirement of this ordinance.
SECTION 2
The sections, paragraphs, sentences, clauses and phrases of this ordinance are severable
and, if any phrase, clause, sentence, paragraph, or section of this ordinance shall be declared
illegal or invalid by the valid judgment or decree of any court of competent jurisdiction, such
illegality shall not affect any of the remaining phrases, clauses, sentences, paragraphs and
sections of this ordinance.
SECTION 3
All ordinances and parts of ordinances in conflict herewith are expressly repealed.
SECTION 4
It is the intention of the governing body, and it is hereby ordained, that the provisions of
this ordinance shall become effective and be made a part of the Code of Ordinances, City of
Tybee Island, Georgia, and the sections of this ordinance may be renumbered to accomplish such
intention.
SECTION 5
This ordinance shall be effective upon its adoption by the Mayor and Council pursuant to
the ordinances of the City.
ADOPTED THIS DAY OF , 2014.
MAYOR
ATTEST:
CLERK OF COUNCIL
FIRST READING:
SECOND READING:
ENACTED:
Tybee/Ordinances/2014/13A-2014 Sec 3-08005 driveways 03.04.14
This Ordinance shall become effective on day of , 2013.
ADOPTED THIS DAY OF , 2013.
MAYOR
A1°1'EST:
CLERK OF COUNCIL
FIRST READING:
SECOND READING:
ENACTED:
EMH/Tybee/Ordinances/2012/240-2012-Sec.3-080,off-street parking requirements—10.31.12
Rev 11.01.12
24C-1-2012 rev as per council mtg 12.05.12
04-2013/Sec 3-080,off street parking requirements—01.02.13
04A-2013/Sec.3-080,off street parking requirements---02.06.13----redlined
04B-2013/Sec 3-080(C)(5)-09.04.13 -clean
13-2014 Sec 3-080 off-street parking 01.13.14
GUIDE TO PERMEABLE PAVEMENT ON TYBEE ISLAND
The Georgia Coastal Storm water Supplement (GCSS) provides information on common types of permeable pavements.
The City of Tybee Island adopted the GCSS on April 12, 2012. Section 7 of the GCSS is located at
http://www.gaepd.org/Files PDF/techguide/wpb/CoastalStormwater/Section 7 Georgia Coastal Stormwater Supple
ment 2009.pdf. The entire manual is at http://www.gaepd.org/Documents/CoastalStormwaterSupplement.html. A
description of permeable pavement in paragraph 7.8.4, Permeable Pavements, reads: "Permeable pavements represent
an alternative to traditional impervious paving surfaces. They typically consist of an underlying drainage layer and an
overlying permeable surface layer. A permeable pavement system allows stormwater runoff to pass through the surface
course (i.e. pavement surface) into an underlying stone reservoir, where it is temporarily stored and allowed to infiltrate
into the surrounding soils or conveyed back into the storm drain system through an underdrain (see Figure 7.28). This
allows permeable pavement systems to provide measurable reductions in post-construction stormwater runoff rates,
volumes and pollutant loads on development sites."
Five types of permeable pavement the GCSS recommends and Tybee Island supports are briefly described below. Figure
7.29 of the GCSS provides photos of each of these except porous asphalt.
1. Pervious Concrete (also known as imp
porous concrete) is similar to - .
conventional concrete in structure - - _ .,,,. -. k�+ "'"' -s—;:
and form, but consists of a special - '� '' '.4.74-.....-;.-........,
open-graded surface course, typically logo' ' .4 ��+�.. >.,}•,;,�
4- to 8-inches thick, that is bound `` r, + +.>���+4'.� 4
together with portland cement. �40.�#4, A*..°ip'►+" r
♦;4'r, ♦ a0p, 4►
2. Porous Asphalt is similar to pervious - _r ' 00. .x.
concrete, and consists of a special Pervious Concrete Concrete Grid Pagers
open-graded surface course bound WW1 I
together by asphalt cement. (There
are no known uses of porous asphalt -
_ .�vr
within the City of Tybee Island.) - _ '-�,.} - -
3. Permeable interlocking Concrete --
Pavers (PICP) are solid structural
units (e.g. blocks, bricks) that are
installed in a way that provides , ,,, ,.:,,
regularly spaced openings through
Permeable Interlocking Concrete Pavers Plastic Grid Pavers
which storm water runoff can rapidly
pass through the pavement surface Figure 719:Various Permeable Pavement Surfaces
and into the underlying stone reservoir(Figure 7.28). ''‘•.Nr. •E W
•
4. Concrete Grid Pavers (CGP) are precast concrete units that allow rainfall and .' r Surface
storm water runoff to pass through large openings that are filled with gravel, sand or t
topsoil and turf. See GCSS Figure 7.28. A concrete header curb or brick/concrete k.,4 s. ;'. .
block ribbon with a maximum width of 12-inches (flush or 1/8-inch higher than the ,:- . "->. 4, y ,,,
contained permeable pavement) must be installed around the perimeter of the * f
permeable pavement. Building foundations and garage floors may serve as a portion -Base 14). `°,
of the perimeter.The edge of a paved road may not serve as a perimeter. Tk". • 4'.
C Underdrnin
A
5. Plastic Grid Pavers (PGP) are similar to CGP. They consist of flexible, interlocking ���
plastic units that allow rainfall and stormwater runoff to pass through large -- '£-``` '! `_ ter, ec.:
`'-.. Subbase ij ;.,7 r -
openings that are filled with gravel, sand or topsoil and turf. A header curb is -
required. GCSS Figure 7.28:Components of a
Permeable Pavement System
An Additional Option
A. Ribbon Driveway designs have been used successfully on Tybee
Island. These are normally constructed of concrete but other ,',,'• '!
materials can be considered. The ribbons are to be a maximum of = .
18-inches wide with a 1%-2% cross slope to route runoff to _ .
adjacent impervious areas rather than down the strips to the
street. The area between the strips may be either grass or stone.
In such installations the stone must be #57 or #89 with no fines.
Limestone (Bahama White Rock or native stone) may be used as
impact from vehicles is not anticipated. The area between the
drive strips should be flush or 1/8-inch below the driving strip to
encourage the percolation of stormwater runoff between the -
driving strips.
http://www.a pa rtmenttherapy.com/oldfash ioned-ri-119857
Driveway installations require a permit.
Should you or your designer have any questions regarding permeable pavements,
please contact the Planning and Zoning Department at (912) 472-5030.
Sec. 3-080. -Off-street parking requirements.
(C) Control of access to structures used for residential purposes including but not limited to single family, duplex, triplex,
two family, multifamily, townhomes, apartments, time shares, and condominiums whether owner occupied or held for
rental. In order to promote the safety of motorists and pedestrians, the following regulations shall apply to all newly
constructed driveways:
(1) A driveway opening which connects a lot with a public street shall not be greater than 25 feet in width at the
property line. Driveways that serve duplex lots shall not have a width greater than 15 feet per unit measured at
the property line. This section is not intended to prevent the installation of flared driveway ends. These flared
ends, when constructed in accordance with adopted standards and specifications, shall not count towards the
width of the driveway.
(2) There shall be no more than two driveway openings on any lot of any width. The total of the widths at the
property line of two driveway openings shall not be greater than 25 feet.
(3) No driveway opening shall be constructed within 25 feet of an intersection, measuring from the nearest
improved portion of the right-of-way. However, in any instance where there is not adequate space available and
other access is not feasible, staff may permit a reduction in the distance to an intersection from a driveway in
order to permit safe access to the property provided the speed limit on abutting or adjacent roads is 30 miles per
hour or less.
(4) No curb on any city street or right-of-way shall be cut or otherwise altered without prior written approval of the
designated city official.
(5) All newly constructed and replacements of more than 50 percent of existing driveways serving residential uses
shall be constructed of materials designed to allow retention of the first one-inch of stormwater.
10/30/2013