ORD 11-20 Federal Emergency Mangement Agency Flood Damage PreventionORDINANCE NO. 11-20
AN ORDINANCE OF THE CITY COUNCIL OF THE
CITY OF ORANGE AMENDING CHAPTER 15.60 OF
TITLE 15 OF THE ORANGE MiJNICIPAL CODE TO
MEET THE MINIMiJM STANDARDS AND
REQUIREMENTS OF THE FEDERAL EMERGENCY
MANAGENLENT AGENCY RELATING TO FLOOD
DAMAGE PREVENTION.
APPLICANT: CITY OF ORANGE
WII REAS, the National Flood Insurance Program ("NFIP") was established with the
passage of the National Flood Inswance Act of 1968; and
WHEREAS, the NFIP is a federal program enabling property owners in participating
communities to purchase insurance as a protection against flood losses in exchange for state and
community floodplain management regulations that reduce future flood damages; and
WHEREAS, the City of Orange entered the NFIP on May 1, 1987 through the Regulaz
Program; and
WHEREAS, Chapter 15.60 of Title 15 of the Orange Municipal Code contains the City's
Flood Damage Prevention Ordinance; and
WfIEREAS, the City is required to update the Flood Damage Prevention Ordinance to
meet the NFIP requiremenu; and
WHEREAS,modifications to the Flood Daznage Prevention Ordinance as provided in the
subject ordinance amendment is intended to reduce the risk of floodin and meet or exceed federal
requirements; and
WHEREAS, the CiTy Council believes the proposed ordinance amendment will serve the
public health, safety and welfaze of the City.
NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF ORANGE DOES
HEREBY ORDAIN AS FOLLOWS:
SECTION I:
The CEQA Guidelines, Section 15308, categorically exempts actions taken by regulatory
agencies, as authorized by state or local ordinance, to assure the maintenance, restoration,
enhancement, or protection of the environment where the regulatory process involves procedures
for protection of the environment. The subject ordinance amendment is exempt from CEQA
because it involves updating the City's existing floodplain management ordinance to address the
revisions requested by FEMA to meet additional requirements as a condition of continued
eligibility to participate in the National Flood Inswance Program.
SECTION II:
Section 15.60.015 is hereby added to Chapter 15.60 of the Orange Municipal Code to read
as follows:
15.60.015 —Statutory Authorization.
The Legislature of the State of Califomia has in Govemment Code Sections 65302,65561,
and 65800 conferred upon local governments the authority to adopt regulations designed to
promote the public health,safety, and general welfare of its citizenry. Therefore,the City Council
of the City of Orange does hereby adopt the following floodplain management regulations.
SECTION III:
Section 15.60.030 of the Orange Municipal Code is hereby amended in its entirety to read
as follows:
15.60.030 - Statement of Purpose.
It is the purpose of this chapter to promote the public health, safety, and general welfaze,
and to minimize public and private losses due to flood conditions in specific azeas by legally
enforceable regula6ons applied uniformly throughout the communiTy to all publicly and privately
owned land within flood prone, mudslide or mudflow, or flood related erosion azeas. These
provisions aze designed:
A. To protect human life and health;
B. To minimize expenditure of public money for costly flood control projects;
C. To minimize the need for rescue and relief efforts associated with flooding and
generally undertaken at the expense of the general public;
D. To minimize prolonged business interruptions;
E. To minimize damage to public facilities and utilities such as water and gas mains,
electric, telephone, and sewer lines, streets and bridges located in azeas of special
flood hazard;
F. To help maintain a stable tax base by providing for the second use and development
of azeas of special flood hazard so as to minimize future flood blight azeas;
G. To ensure that potential buyers aze notified that properry is in an azea of special
flood hazazd; and
Ordinance No. 1 I-20 2
H. To ensure that those who occupy the azeas of special flood hazazd assume
responsibility for their actions.
SECTION IV:
Section 15.60.050 of the Orange Municipal Code, "Definitions,"is hereby amended in part
to revise the following definitions:
BASE FLOOD means the flood having a one percent chance of being equaled or exceeded
in any given yeaz(also called the "100-year flood").
FLOOD WAY means the channel of a river or other watercourse and the adjacent land azeas
necessary in order to discharge the base flood without cumulatively increasing the water surface
elevarion more than one foot. Also referred to as "Regulatory Floodway."
MEAN SEA LEVEL means, for purposes of the National Flood Insurance Program, the
National Geodetic Vertical Datum(NGVD) of 1929,North American Vertical Datum(NAVD) of
1988 or other dahun, to which base flood elevations shown on a community's Flood Insurance
Rate Map aze referenced.
ONE HLTNDRED YEAR FLOOD or 100-YEAR FLOOD means a flood which has a one
percent annual probability of being equaled or exceeded. It is identical to the "base flood", which
will be the term used throughout this chapter.
SECTION V:
Secfion 15.60.050 of the Orange Municipal Code,"Definitions,"is hereby amended in part
to add the following definitions:
EXISTING MANUFACTURED HOME PAI2K OR SUBDIVISION means a
manufactured home pazk or subdivision for which the construction of facilities for servicing the
lots on which the manufactured homes are to be affixed (including, at a minimum,the installation
of utilities,the construction of streets,and either final site grading or the pouring of concrete pads)
is completed before May 26, 1987.
EXPANSION TO AN EXISTING MANUFAC"PURED HOME PARK OR
SUBDIVISION means the prepazation of additional sites by the construction of facilities for
servicing the lots on which the manufactured homes aze to be affixed(including the instal]ation of
utilities,the construction of streets, and either final site grading or the pouring of concrete pads).
FREEBOARD means a mazgin of safety, expressed in feet above base flood elevation for
purposes of floodplain management,to account for waves, debris,miscalculations,lack of data,or
changes in climate.
Ordinance No. 11-20 3
HISTORIC STRUCTURE means any structure that is:
1.Listed individually in the National Register of Historic Places (a listing
maintained by the Departrnent of Interior) or preliminarily deternuned by
the Secretary of the Interior as meeting the requirements for individual
listing on the National Register;
2.Certified or preliminarily determined by the Secretary of the Interior as
contribuUng to the historical significance of a registered historic district or
a district preliminarily determined by the Secretary to qualify as a registered
historic district;
3.Individually listed on a state inventory of historic places in states with
historic preservation programs which have been approved by the Secretary
of Interior; or
4.Individually listed on a local inventory of historic places in communities
with historic preservation programs that have been cer[ified either by an
approved state program as determined by the Secretary of the Interior or
directly by the Secretary of the Interior in states without approved programs.
NEW MANiJFACTURED HOME PARK OR SUBDNISION means a manufactured
home pazk or subdivision for which the construction of facilities for servicing the lots on which
the manufactured homes aze to be afFixed(including at a minimum,the installation of utilities,the
construc6on of streets, and either final site grading or the pouring of concrete pads) is completed
on or after May 26, 1987.
RECREATIONAL VEHICLE means a vehicle which is:
1.Built on a single chassis;
2.400 square feet or less when measured at the largest horizontal projection;
3.Designed to be self-propelled or permanently towable by a light-duty truck;
and
4.Designed primazily not for use as a permanent dwelling but as temporary
living quarters for recreational, camping, travel, or seasonal use.
SUBSTANTIAL DAMAGE means damage of any origin sustained by a structure whereby
the cost of restoring the structure to its before-damaged condition would equal or exceed 50 percent
of the mazket value of the shucture before the damage occurred.
SECTION VI:
Section 15.60.150.A of the Orange Municipal Code, "Duties and Responsibiliries of the
Floodplain Administrator,"is hereby amended in its entirety to read as follows:
Ordinance No. 11-20 4
A. Permit review.
1.Review all development permits, including manufactured homes,
substantial improvement and substantial damage of existing structures, to
determine that the permit requirements of this chapter have been satisfied;
2.All other required state and federal permits required for floodplain
management purposes have been obtained.
3.The site is reasonably safe from flooding.
4.Require, until a regulatory floodway is designed, that no new construction,
substan6al improvements, or other development (including fill) shall be
permitted within Zones A1-30 and AE on the community's FIRM, unless it
is demonstrated that the cumulative effect of the proposed development,
when combined with all other existing and anticipated development, will
not increase the water surface elevation of the base flood more than one foot
at any point within the community.
5. All Letters of Map Revision (LOMR's) for flood control projects aze
approved prior to the issuance of building permits. Building Permits must
not be issued based on Conditional Letters of Map Revision (CLOMR's).
Approved CLOMR's allow construction of the proposed flood control
project and land prepazation as specified in the "start of construction"
definition.
SECTION VII:
Section 15.60.150 of the Orange Municipal Code, "Duties and Responsibilities of the
Floodplain Admuustrator," is hereby amended to add new Subsection D, and former Subsections
D and E shall be re-labelled as E and F accordingly. New Section 15.60.150.D shall read as
follows:
D. Whenever Base Flood Elevation changes due to physical alterations:
1.Within 6 months of information becoming available or project completion,
whichever comes first, the floodplain administrator shall submit or assure
that the permit applicant submits technical or scientific data to FEMA for a
Letter of Map Revision(LOMR).
2.All LOMRs for flood control projects are approved prior to the issuance of
building permits. Building Permits must not be issued based on Conditional
Letters of Map Revision (CLOMRs). Approved CLOMRs allow
construction of the proposed flood control project and land prepazation as
specified in the "start of construction" definition.
Ordinance No. 11-20 5
Such submissions aze necessary so that upon confirmation of those physical
changes affecring flooding conditions, risk premium rates and floodplain
management requirements aze based on current data.
SECTION VIII:
Section 15.60.150 of the Orange Municipal Code, "Duties and Responsibilities of the
Floodplain Administrator,"is hereby amended to add new Subsection H to read as follows:
H. Notify FEMA in writing whenever the corporate boundaries have been modified
by annexation or other means and include a copy of a map of the community cleazly
delineating the new corporate limits.
SECTION IX:
Section 15.60.160 of the Orange Municipal Code, "Standards of Conshuction," is hereby
amended in its entirety to read as follows:
A. Anchoring.
1.All new wnstruction and substantial improvements, including
manufactured homes, shall be adequately anchored to prevent flotation,
collapse or lateral movement of the structure resulting from hydrodynamic
and hydrostatic loads, including the effects of buoyancy.
2.All manufactured homes shall meet the a choring standazds of Section
15.60.190.
B. Construction Materials and Methods.
All new construction and substantial improvements, including manufactured
homes, shall be constructed as follows:
1.With materials and utility equipment resistant to flood damage;
2.Using methods and practices that minimize flood damage;
3.With electrical, heating, ventilation, plumbing and air conditioning
equipment and other service facilities that are designed and/or located so as
to prevent water from entering or accumulating within the components
during conditions of flooding; and
4.If within Zones AH or AO, so that there aze adequate drainage paths azound
structures on slopes to guide flood waters azound and away from proposed
structures.
Ordinance No. 11-20 6
C. Elevation and Floodproofing. (See Section 15.60.050 definitions for
FREEBOARD," "LOWEST FLOOR," "NEW CONSTRUCTION,"
SUBSTANTIAL DAMAGE" and "SUBSTANTIAL IMPROVEMENT.")
All new, substantially improved, and substantially damaged structures, including
manufactured homes,need to be elevated at a minimum to the base flood elevation,
as shown on the effective Flood Insurance Rate Map, plus one-foot freeboazd.
1.Residential construction, new construction or substantial improvement,
shall have the lowest floor, including basement:
a.In an AO Zone,elevated above the highest adjacent grade to a height
exceeding the depth number specified in feet on the FIRM, by at
least one foot, or elevated at least three feet above the highest
adjacent grade if no depth number is specified.
b.In an A Zone, elevated at least one foot above the base flood
elevation, as determined by this community.
c.In all other zones, elevated at least one foot above the base flood
elevation.
Upon the completion of the structure, the elevation of the lowest floor
including basement shall be certified by a registered professional engineer
or surveyor, or verified by the community building inspector to be properly
elevated. Such certification or verification shall be provided to the
Floodplain Administrator.
2. Nonresidential construction st all either be elevated to conform with Section
15.60160.C.1, or together with attendant utiliTy and sanitary facilities,
a.Be floodproofed below the elevation recommended under Section
15.60.160.C.1 so that the structure is watertight with walls
substantially impermeable to the passage of water;
b. Have structural components capable of resisting hydrostatic and
hydrodynamic loads and effects of buoyancy; and
c.Be certified by a registered professional engineer or azchitect that
the standards of this section 15.60.160.C.2 aze satisfied. Such
certification shall be provided to the Floodplain Adminisffator.
3. All new construction and substan6al improvement with fully enclosed azeas
below the lowest floor (excluding basements) that aze usable solely for
pazking of vehicles, building access or storage, and which aze subject to
flooding, shall be designed to automatically equalize hydrostatic flood
forces on exterior walls by allowing for the entry and exit of floodwater.
Ordinance No. 11-20 7
Designs for meeting this requirement must exceed the following minimum
criteria:
a.Be certified by a registered professional engineer or azchitect; or
b.Be certified to comply with a local floodproofing standard approved
by the Federal Insurance Administration, Federal Emergency
Management Agency; or
c.Have a minimum of two openings on different sides having a total
net azea of not less than one square inch for every squaze foot of
enclosed area subject to flooding. The bottom of all openings shall
be no higher than one foot above immediately adjacent grade.
Openings may be equipped with screens, louvers, valves or other
coverings or devices provided that they permit the automatic entry
and exit of floodwater.
4. Manufactured homes shall also meet the standazds in Section 15.60.190.
SECTION X:
Subsections A and B of Section 15.60.180 of the Orange Municipal Code, "Standazds for
Subdivisions,"aze hereby amended to read as follows:
A. All preliminary subdivision proposals, including proposals for manufactured home
pazks and subdivisions,greater than SO lots or 5 acres,whichever is the lesser,shall
identify the flood hazard azea and the elevation of the base flood.
B. All final subdivision plans will provide the elevation of the lowest floors of all
proposed structwe(s)and pad s. If the site is filled above the base flood elevation,
the final first floor and pad elevations shall be certified by a registered professional
engineer or surveyor and provided as part of an application for a Letter of Map
Revision based on Fill (LOMR-F)to the Floodplain Administrator.
SECTION XI:
Section 15.60.190 of the Orange Municipal Code, "Standazds for Manufactured Homes,"
is hereby amended in its entirety to read as follows:
A. All manufactured homes within Zones A1-30, AH, and AE that aze placed or
substanrially improved, on sites located: (1) outside of a manufactured home pazk
or subdivision; (2) in a new manufactured home pazk or subdivision; (3) in an
expansion to an existing manufactured home park or subdivision; or (4) in an
existing manufactured home pazk or subdivision upon which a manufactured home
has incurred "substantial damage" as the result of a flood, shall be elevated on a
permanent foundation such that the lowest floor of the manufactured home is
Ordinance No. 11-20 8
elevated at least one foot above the base flood elevation and be securely fastened
to an adequately anchored foundation system to resist flotation,collapse,and lateral
movement.
B. All manufactured homes to be placed or substantially improved on sites in an
existing manufactured home pazk or subdivision within Zones A1-30,AH, and AE
on the community's Flood Insurance Rate Map that aza not subject to the provisions
of Section 15.60.190.A will be securely fastened to an adequately anchored
foundation system to resist flotation, collapse, and lateral movement, and be
elevated so that either the:
1. Lowest floor of the manufactured home is one foot above the base flood
elevarion; or
2.Manufactured home chassis is supported by reinforced piers or other
foundation elements of at least equivalent strength that aze no less than 36
inches in height above grade.
SECTION XII:
Section 15.60.195 is hereby added to Chapter 15.60 of the Orange Municipal Code to read
as follows:
15.60.195 - Standards for Recreational Vehicles.
A. All recreational vehicles placed in Zones A1-30, AH, and AE will either:
1. Be on the site for fewer than 180 consecutive days; or
2. Be fully licensed and ready for highway use. A recreational vehicle is ready
for highway use if it is on its wheels or jacking system, is attached to the
site only by quick disconnect type utilities and security devices, and has no
permanently attached additions; or
3. Meet the pemut requirements of Section 15.60.130 of this ordinance and
the elevation and anchoring requirements for manufactured homes in
Sec6on 15.60.190.
SECTION XIII:
Should any section, subsection, clause, or provision of this Ordinance for any reason be
held to be invalid or unconstitutional, such invalidiTy or unconstitutionality shall not affect the
validity or constitutionality of the remaining portions of this Ordinance; it being hereby expressly
declazed that this Ordinance, and eacti section, subsection, sentence, clause and phrase hereof
Ordinance No. 11-20 9
would have been prepazed,proposed, approved and rafified inespective of the fact that any one or
more sections, subsections, sentences, clauses or phrases be declazed invalid or unconsfitutional.
SECTION XIV:
The City Clerk is hereby directed to certify the adoption of this Ordinance and cause a
summary of the same to be published as required by law. This Ordinance shall take effect thirty
30) days from and after the date of its final passage.
ADOPTED this 12th day of May 2020.
Mazk A. Murphy, Mayor, City O ge
ATTEST:
1( • P1<f
Pamela Coleman, City Clerk, CiTy of Orange
STATE OF CALIFORNIA )
COUNTY OF ORANGE )
CITY OF ORANGE )
I, PAMELA COLEMAN, City Clerk of the City of Orange, California, do hereby certify
that the foregoing Ordinance was introduced at the regular meeting of the City Council held on the
14th day of Apri12020, and thereafter at the regulaz meeting of said City Council duly held on the
12th day of May 2020, was duly passed and adopted by the following vote, to wit:
AYES: COLINCILMEMBERS: Alvazez, Murphy,Nichols, Monaco
NOES: COiJNCILMEMBERS: None
ABSEN'I': COiTNCILMEMBERS: None
ABSTAIN: COiJNCILMEMBERS: None
C/
J t ,( .QC..Lh1.fR
Pamela Coleman, City Clerk, CiTy of Orange
Ordinance No. 11-20 10