Item 7A
AGENDA ITEM #7A
FEBRUARY 27, 2006
CITY OF ATLANTIC BEACH
CITY COMMISSION STAFF REPORT
AGENDA ITEM: Proposed revisions to the definition of Impervious Surface within
~• Section 24-17 of Chapter 24, the Land Development Regulations, related to the
use of pavers, pervious concrete or open grid paving systems, and the
applicability of Impervious Surface limits to existing developed lots and
redevelopment.
SUBMITTED BY: Rick Carper, P.E. ,1t' ~
„~ Public Works Director
DATE: February 15, 2006
~* BACKGROUND: At the December 12th Commission Meeting, Staff was requested to
include in a proposed change to the definition of Impervious Area a revision that
eliminated the 50% impervious credit for use of pavers. This requested change was
""' included in Draft Ordinance 90-06-188 and referred to the Community Development
Board at the January 9th meeting.
The Community Development Board considered this revision to the definition of
Impervious Surface at their January 17th meeting. After considerable discussion by
the CD Board and comments from the public, the CD Board recommended that the
'°" changes related to the use of pavers, pervious concrete or open grid paving systems
be adopted by the City Commission.
~"' In addition, the proposed ordinance clarifies the applicability of the City's 50%
Impervious Surface Area (ISA) limit with respect to existing development. This
clarification is necessary because of recent ISA waiver applications for properties
~` within older PUDs where an allowable ISA limit was not specified in the ordinance
creating the PUD.
BUDGET: No budget issues.
RECOMMENDATION: Approve on First Reading Ordinance 90-06-188 related to the use
of pavers, pervious concrete or open grid paving systems.
ATTACHMENTS: Draft Ordinance Number 90-06-188
REVIEWED BY CITY MANAGER:
February 27, 2006 regular meeting
AGENDA ITEM #7A
FEBRUARY 27, 2006
ORDINANCE NUMBER 90-06-188
AN ORDINANCE OF THE CITY OF ATLANTIC BEACH, FLORIDA,
AMENDING CHAPTER 24 OF THE ATLANTIC BEACH CODE OF
ORDINANCES, THE LAND DEVELOPMENT REGULATIONS, SECTION
24-17, DEFINITIONS, AND PROVIDING AN EFFECTIVE DATE.
NOW THEREFORE, BE IT ENACTED BY THE CITY COMMISSION ON
BEHALF OF THE PEOPLE OF THE CITY OF ATLANTIC BEACH,
FLORIDA:
SECTION 1. The Zoning, Subdivision and Land Development Regulations, adopted as
~'"' Chapter 24 of the Code of Ordinances of the City of Atlantic Beach, Florida, is hereby amended by
modifying Article II, Section 24-17, Definitions, Impervious Surface, and upon enactment of this
Ordinance, said definition shall read as set forth below.
Impervious Surface shall mean those surfaces that prevent the entry of water into the soil. Common
Impervious Surfaces include, but are not limited to, rooftops, sidewalks, patio areas, driveways,
parking Lots, and other surfaces made of concrete, asphalt, brick, plastic, or any surfacing material
with a base or lining of an impervious material. Wood decking elevated two or more inches above
the ground shall not be considered impervious provided that the ground surface beneath the decking
is not impervious. Pervious areas beneath roof or balcony overhangs that are subject to inundation by
stormwater and which allow the percolation of that stormwater shall not be considered impervious
areas. Swimming pools shall not be considered as Impervious Surfaces because of their ability to
retain additional rainwater, however, decking around a pool may be considered impervious
depending upon materials used. Surfaces using pervious concrete or other similar open grid paving
systems shall be calculated as fifty percent (50%) Impervious Surface, provided that no barrier to
natural percolation of water shall be installed beneath such material. Open grid Pavers must be
installed on a sand base without liner in order to be considered 50% impervious. Solid surface
pavers (e ~ brick or brick appearing pavers as opposed to open grid pavers) do not qualify for any
reduction in impervious area, regardless of type of base material used.
Unless otherwise and specifically provided for in these Land Development Regulations, or within
another Ordinance or by other official action establishinpyspecific Impervious Surface Limits for a
particular Lot or Development Project the fifthpercent (50%) Impervious Surface limit shall be the
maximum Impervious Surface limit for all new residential Development and redevelopment. In such
cases where a previously and lawfully developed residential Lot or Development Proiect exceeds the
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exceed the pre-construction Impervious Surface limit provided the stormwater and drainage
requirements of Section 24-66 are met.
Ordinance Number 90-06-188
~.
AGENDA ITEM #7A
FEBRUARY 27, 2006
SECTION 2. This Ordinance shall take effect immediately upon its final passage and
adoption and shall be recorded in a book kept and maintained by the Clerk of the City of Atlantic
Beach, Duval County, Florida, in accordance with Section 125.68, Florida Statutes.
Passed upon first reading by the City Commission of the City of Atlantic Beach this th day of
2006. Passed upon final reading and public hearing this th day of ,
2006.
DONALD M. WOLFSON
Mayor and Presiding Officer
Approved as to form and correctness:
ALAN C. JENSEN, ESQUIRE
City Attorney
~.
ATTEST
DONNA BUSSEY
City Clerk
Ordinance Number 90-06-188