ORD NO. 2017-04 FEMA FLOOD PLAIN MAP UPDATEORDINANCE NO. 2017-04
AN ORDINANCE of the City of Bainbridge Island, Washington, relating to
updated FEMA Flood Maps and flood damage prevention and amending
Sections 15.16.030 and 15.16.050 of the Bainbridge Island Municipal Code.
WHEREAS, in order to ensure the City of Bainbridge Island's participation in the
National Flood Insurance Program (NFIP), the City is required to administer and enforce the
floodplain regulations contained in Chapter 15.16 BIMC,thereby enabling the Federal
Emergency Management Agency(FEMA)to continue to allow flood insurance to be sold in
the City; and
WHEREAS,the Flood Insurance Study revision was the result of a multi-year
effort conducted by the FEMA within Kitsap County, Washington, to provide updated
digital floodplain maps showing areas that would be inundated by the base flood (100-
year flood) as well as the regulatory floodway; and
WHEREAS, representatives from the FEMA, the Washington State Department of
Ecology, the Kitsap County Department of Emergency Management, and the Bainbridge
Island Department of Planning and Community Development conducted a cooperative
public open house regarding the updated digital floodplain maps on May 13, 2014,
including mailed notifications and significant public outreach in 2014; and
WHEREAS, the Floodplain Management Specialist from the Washington State
Department of Ecology provided recommendations from that agency for the City to amend
Chapter 15.16 BIMC in order to ensure compliance with NFIP and state floodplain
regulations; and
WHEREAS,the FEMA requires adoption by the local jurisdiction of the updated
digital floodplain maps by no later than February 3, 2017, in order to ensure City
compliance with NFIP and state floodplain regulations; and
WHEREAS,the City Council considered this proposed Ordinance No. 2017-04 at
its Study Session on January 17, 2017, and a public hearing was set for January 24, 2017;
and
WHEREAS, a public hearing on this Ordinance No. 2017-04 was conducted at the
Council's Business Meeting on January 24, 2017;
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF
BAINBRIDGE ISLAND, WASHINGTON, DOES ORDAIN AS FOLLOWS:
Section 1. Section 15.16.030.B of the Bainbridge Island Municipal Code is amended to
read as follows:
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B. Basis for Establishing the Areas of Special Flood Hazard. The areas of special
flood hazard identified by the Federal Insurance Administration in a scientific
and engineering report entitled, "The Flood Insurance Study for Kitsap County
and Incorporated Areas" dated November 4, 2010, February 3, 2017,with
accompanying Flood Insurance Maps and any revisions thereto, is adopted by
reference and declared to be a part of this chapter. The Flood Insurance Study is
on file at the office of the city clerk. The best available information for flood
hazard area identification as outlined in BIMC 15.16.040.D.2 shall be the basis
for regulation until a new FIRM is issued that incorporates data utilized under
BIMC 15.16.040.D.2.
Section 3. Section 15.16.050 of the Bainbridge Island Municipal Code is amended to add
the following sections following Section 15.16.050.K:
L. Coastal High Hazard Areas. Located within areas of special flood hazard
established in BIMC Section 15.16.030.B are Coastal High Hazard Areas,
designated as Zones V1-30, VE and/or V. These areas have special flood
hazards associated with high velocity waters from surges, and therefore, in
addition to meeting all provisions in this code,the following provisions shall
also apply:
1) All new construction and substantial improvements in Zones V1-30 and VE
and V if base flood elevation data is available) on the community's FIRM
shall be elevated on pilings and columns so that:
i) The bottom of the lowest horizontal structural member of the lowest
floor (excluding the pilings or columns) is elevated one foot or more
above the base flood level; and
ii) The pile or column foundation and structure attached thereto is
anchored to resist flotation, collapse, and lateral movement due to the
effects of wind and water loads acting simultaneously on all building
components. Wind and water loading values shall each have a one
percent chance of being equaled or exceeded in any given year (100-
year mean recurrence interval).
A registered professional engineer or architect shall develop or review the
structural design, specifications, and plans for the construction, and shall
certify that the design and methods of construction to be used are in
accordance with accepted standards of practice for meeting the provisions
of BIMC Section 15.16.050.L(1)(i) and (ii).
2) A registered professional engineer or surveyor shall obtain and certify the
elevation(in relation to mean sea level)of the bottom of the lowest structural
member of the lowest floor(excluding pilings and columns) of all new and
substantially improved structures in Zones V1-30, VE, and V on the
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community's FIRM and whether or not such structures contain a basement.
The (Local Administrator) shall maintain a record of all such information.
3) All new construction within Zones V1-30, VE, and V on the community's
FIRM shall be located landward of the reach of mean high tide.
4) All new construction and substantial improvements within Zones V1-30,
VE, and V on the community's FIRM shall have the space below the
lowest floor either free of obstruction or constructed with non-supporting
breakaway walls, open wood lattice-work, or insect screening intended to
collapse under wind and water loads without causing collapse,
displacement, or other structural damage to the elevated portion of the
building or supporting foundation system. For the purposes of this section,
a breakaway wall shall have a design safe loading resistance of not less
than 10 and no more than 20 pounds per square foot. Use of breakaway
walls which exceed a design safe loading resistance of 20 pounds per
square foot (either by design or when so required by local or state codes)
may be permitted only if a registered professional engineer or architect
certifies that the design proposed meets the following conditions:
i) Breakaway wall collapse shall result from water load less than that
which would occur during the base flood; and
ii) The elevated portion of the building and supporting foundation system
shall not be subject to collapse, displacement, or other structural
damage due to the effects of wind and water loads acting
simultaneously on all building components (structural and non-
structural). Maximum wind and water loading values to be used in this
determination shall each have a one percent chance of being equaled or
exceeded in any given year (100-year mean recurrence interval).
If breakaway walls are utilized, such enclosed space shall be useable
solely for parking of vehicles, building access, or storage. Such space shall
not be used for human habitation.
5) Use of fill for structural support of buildings within Zones V1-30, VE, and
V on the community's FIRM is prohibited.
6) Person-made alteration of sand dunes within Zones V1-30, VE, and V on
the community's FIRM which would increase potential flood damage is
prohibited.
7) All manufactured homes to be placed or substantially improved within
Zones V1-30, V, and VE on the community's FIRM on sites:
i) Outside of a manufactured home park or subdivision;
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ii) In a new manufactured home park or subdivision;
iii) In an expansion to an existing manufactured home park or subdivision;
or
iv) In an existing manufactured home park or subdivision on which a
manufactured home has incurred "substantial damage" as the result of
a flood;
shall meet the standards of paragraphs BIMC Section 15.16.050.L(1)
through (6), and manufactured homes placed or substantially improved on
other sites in an existing manufactured home park or subdivision within
Zones V1-30, V, and VE on the community's FIRM shall meet the
requirements of BIMC Section 15.16.050.F(4).
8) Recreational vehicles placed on sites within Zones V1-30, V, and VE on
the community's FIRM shall either:
i) Be on the site for fewer than 180 consecutive days;
ii) Be fully licensed and ready for highway use, on its wheels or jacking
system, attached to the site only by quick disconnect type utilities and
security devices, and have no permanently attached additions; or
iii) Meet the requirements of BIMC Section 15.16.050.F(5) and BIMC
Section 15.16.050.L(1) through (6).
Section 4. To the extent that the requirements set forth in the provisions of this ordinance
amending or adding sections to the Bainbridge Island Municipal Code are inconsistent with
requirements set forth in other City code provisions,the requirements set forth in this
ordinance shall supersede the requirements in the other City code provisions.
Section 5. This ordinance shall take effect and be in force on and after five days from its
passage and publication as required by law, resulting in the ordinance being effective by
February 3, 2017.
PASSED BY THE CITY COUNCIL this 24th day of January, 2017.
APPROVED BY THE MAYOR this 24th day of January, 117.
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ATTEST/AUTHENTICATE:
Christine Brown, City Clerk
FILED WITH THE CITY CLERK: January 13, 2017
PASSED BY THE CITY COUNCIL: January 24, 2017
PUBLISHED: January 27, 2017
EFFECTIVE DATE:February 1, 2017
ORDINANCE NUMBER: 2017-04
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