HomeMy WebLinkAboutOrdinance - 2473 - Amend Title 16
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SUMMARY OF
CITY OF REDDING
ORDINANCE NO. 2473
The following is a summary Report of the City of Redding's Ordinance No. 2473, an
ordinance of the City Council ofthe City of Redding amending Redding Municipal Code Title 16
by adopting, amending and adding new model building codes.
The proposed ordinance was introduced and read by the Redding City Council on November
16, 2010, and will be considered for adoption at its next regular meeting. The Ordinance establishes
applicable building regulations and local modifications areas:
· California Building Code and local amendments thereto.
· California Residential Code and local amendments thereto.
· California Mechanical Code and local amendments thereto.
· California Plumbing Code and local amendments thereto.
· California Electrical Code and local amendments thereto.
· California Energy Code and local amendments thereto.
· California Green Building Standards Code and local amendments thereto.
· California Uniform Housing Code.
A copy ofthe full ordinance containing details of the above summarized content is available
for inspection in the City of Redding, Office of the City Clerk.
DATED: November 23,2010
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SUMMARY OF
CITY OF REDDING
ORDINANCE NO. 2473
The following is a summary Report of the City of Redding's Ordinance No. 2473, an
ordinance of the City Council of the City of Redding amending Redding Municipal Code Title 16
by adopting, amending and adding new model building codes.
The Ordinance establishes applicable building regulations and local modifications areas:
· California Building Code and local amendments thereto.
· California Residential Code and local amendments thereto.
· California Mechanical Code and local amendments thereto.
· California Plumbing Code and local amendments thereto.
· California Electrical Code and local amendments thereto.
· California Energy Code and local amendments thereto.
· California Green Building Standards Code and local amendments thereto.
· California Uniform Housing Code.
Ordinance No. 2473 was introduced and read at a regular meeting of the City Council ofthe
City of Redding on the 16th day of November, 2010, and was duly read and adopted on the 7th day
of December, 2010, at a regular meeting of the City Council by the following vote:
Ayes:
Noes:
Absent:
Abstain:
Council Members:
Council Members:
Council Members:
Council Members:
Bosetti, Dickerson, Jones, Sullivan, and McArthur
None
None
None
A complete copy of Ordinance No. 2473 is on file and available for review in the Office of
the City Clerk.
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ORDINANCE NO. 2473
AN ORDINANCE OF THE CITY OF REDDING AMENDING REDDING
MUNICIPAL CODE TITLE 16 (BUILDINGS AND CONSTRUCTION)
CHAPTER 16.01 (BUILDING OFFICIAL PERMITS), SECTION 16.01.050;
CHAPTER 16.02 (BUILDING CODE) BY AMENDING SECTION 16.02.010;
RENUMBERING AND AMENDING CHAPTERS 16.03, 16.04, 16.05 AND
16.06 AND THE SECTIONS CONTAINED THEREIN TO CHAPTERS 16.04,
16.05,16.06 AND 16.09 RESPECTIVELY; ADDING A NEW CHAPTER 16.03
(RESIDENTIAL CODE), 16.07 (ENERGY CODE) AND 16.08 (GREEN
BUILDING CODE) AND MAKING FINDINGS OF FACTS RELATING TO
LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHIC CONDITIONS,
ALL RELATING TO THE ADOPTION OF THE CALIFORNIA BUILDING
STANDARDS CODES
THE CITY COUNCIL OF THE CITY OF REDDING DOES ORDAIN AS FOLLOWS:
Section 1. Findings of fact and need for changes or modifications to the 2007 State Building
Standards Code because of local conditions.
A. Changes or Modifications. Pursuant to Section 17958.5, 17958.7 and 18941.5 of the State
of California Health and Safety Code, the City of Redding adopts and amends the 2006
edition of the International Building Code, the 2006 edition of the Uniform Plumbing and
Mechanical Codes, and the 2005 National Electric Code and the 2007 State Building
Standards Code as they pertain to the regulation of buildings and structures.
B. Findings. Pursuant to Sections 17958.5, 17958.7 and 18941.5 ofthe State of California
Health and Safety Code, the City of Redding has determined and finds the attached changes
or modifications are needed and are reasonably necessary because of local climatic,
geological, and topographic conditions.
C. Local Conditions. Local conditions have an adverse effect on the potential for life and
property loss, making necessary changes or modifications to the 2007 California State
Building Standards Code in order to establish and maintain an environment which will
provide the community a desirable level of protection.
Below are listed adverse local climatic, geological, and topographic conditions:
1. Climatic.
a.
Precipitation. The normal rainfall for the City of Redding is approximately
33.6 inches annually. Winter storms are responsible for the heaviest intensity
of precipitation, with two-thirds of the rain coming between December and
March and 15 percent between April and June. The City typically
experiences snow once or twice a year, with depth ofless than a foot. Snow
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depths have attained 18" or more at least twice in the last 1 00 years. In both
cases, there were building failures due to the weight of the snow. Snow in
Redding is typically wet and is frequently rained upon. Drifting snows have
not been an issue within the City.
b. Temperature. Summer sunshine is abundant in the Redding area, with over
39 days a year with temperatures of 100 degrees or higher. The Northern
California valley sees approximately 200 days of clear skies, with May
through September having temperature ranges between 95 and 115 degrees.
Winter temperatures occasionally dip below freezing at night.
2. Geological and Topographic.
a. The City of Redding is located in Shasta County in Northern California. It
is approximately 100 miles south ofthe Oregon border and 160 miles north
of Sacramento. Redding's population in 2010 was approximately 90,000,
which makes Redding the largest city in Shasta County, along with being the
largest city in California north of Sacramento.
The City encompasses approximately 61 square miles, was founded in 1872,
and incorporated in 1887. Much of the downtown area is comprised of
construction dating back to the late l800s and the early 1900s.
Soil conditions often consist of varying types of soils at different depths,
leading to saturated soil conditions during winter rains and underground
migration of water at all times of the year.
b. The City consists offlat lands, hills, valleys, and ridges. The flatter areas are
found in the southeast portion of the City. Most of the existing commercial
areas are on relatively flat land.
Residential development occurs in the hilly areas on the west and northeast
portions of the City. The majority of the hills in these areas have slopes
ranging from 15 to 30 percent. The steeper slopes, west and north of the
City, are planned for open-space use.
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Elevations are varied within the City and may be 500 feet to 1,000 feet above
sealevel.
c. The relatively young geological processes that have created earthquakes in
California are also active today in Redding. The largest recorded earthquake
in the Redding area occurred in 1940, at 5.7 on the Richter scale, and the last
in 1998, with a 5.2 on the Richter scale. USGS seismic hazard mapping
indicates probabilistic peak ground accelerations (PGA) of 16%g, 18%g, and
22%g on firm rock, soft rock, and alluvium site soil categories, respectively.
Assuming a peak ground acceleration (PGA) of j 8%g over the entire City,
estimated building damage ratios of 6% for older structures located in the
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immediate downtown area of the City, and 3% for all other areas within the
City, there is a 10% probability that the City will suffer an estimated $200
million in damage in the next 50 years (once every 475 years).
D. Summary. The above local climatic, geologic, and topographic conditions create the
potential for excessive water below building slabs, snow loads, and increased seismic
hazards. There is a history of problems due to water migration up through floor slabs and
into the interior space of buildings in the area as well as failures due to snow loads. As a
result of this "findings of fact," which identifies the various climatic, geological, and
topographical elements, the requirements established by the City of Redding within the
adopted Redding City ordinances are considered "reasonable and necessary" based on the
following:
· Climatic, geologic, and topographical conditions necessitate the control of moisture
migration into buildings.
· Geologic conditions necessitate proper design for seismic accelerations.
· Climatic conditions necessitate proper design criteria for snow loads.
Conclusion
Local climatic, geologic, and topographic conditions impact the built environment and necessitate
amendments to the California Building Standards Code.
Therefore, it is found to be reasonably necessary that the State Building Standards Code be changed
or modified to mitigate the effects of the above conditions. Furthermore, California Health and
Safety Code Section 17958.7 requires that the modification or change be expressly marked and
identified as to each finding to which it refers. Therefore, the City of Redding finds that the
following table provides code sections that have been modified pursuant to the ordinance that are
building standards as defined in the Health and Safety Code Section 18909 and the associated
referenced conditions or modifications due to local climatic, geological, and topographical reasons:
CBC SECTION No. LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHICAL CONDITIONS
1608 1a
1908.1.11 2c
1613.5.6 2c
1613.5.6.1 2c
1807.1.5 2c,
1807.1.6 2c
2308.8.5 1a
2308.9.3 2c
3109 1b
CRC SECTION No. LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHICAL CONDITIONS
R301.2.2.1.1 2c
R404.1.4.1 2c
R404.1.4.2 2c
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CGBC SECTION No.
LOCAL CLIMATIC, GEOLOGICAL, AND TOPOGRAPHICAL CONDITIONS
4.505.2.1
1a,2a
Section 2. Title 16 (Buildings and Construction), Chapter 16.01 (Building Official -
Permits), Section 16.01.050 ofthe Redding Municipal Code is amended to read as follows:
16.01.050 Construction performed by a public agency other than city.
Construction, remodeling, or installation of structures, including mobile or modular units,
within the city by another agency that is exempt from a building permit shall not be charged a fee
for Building and Code Enforcement Division plan review and inspection services; however,
development impact fees imposed by the city are applicable. Fees associated with such permit for
other than building and code enforcement division-related services shall be due and payable prior
to any construction or installation of such services.
Section 3. Title 16 (Buildings and Construction), Chapter 16.02 (Building Code), Section
16.02.010 of the Redding Municipal Code is amended to read as follows:
16.02.010
California Building Code adopted.
A. That certain document, a copy of which is on file and open for inspection in the City of
Redding Permit Center, marked and designated as "California Building Code (CBC), 2010
Edition, Volumes 1 and 2," published by the International Code Council.
B. Snow load CBC Section 1608 is replaced by the following:
1608.1 General. Design snow loads shall be determined by the Building Official.
C. Modify the text of ACI 318 by adding CBC Section 1908.1.11 as follows:
1908.1.11 ACI 318, Section 14.8. Modify ACI 318 Section 14.8.3 and 13.8.4 in accordance with
2007 Los Angeles Area Regional Uniform Code Program (LARUCP) recommendation 19-01 per
the August 24, 2007, recommended amendments to the 2007 California Building Code.
D. Add the following exception to CBC Section 1613.5.6:
Exception: Structures not assigned to Seismic Design Category E or F above shall be assigned to
Seismic Design Category D.
E. Add the following exception to CBC Section 1613.5.6.1
Exception: Seismic Design Category shall be determined per exception to Section 1613.5.6.
F. Delete CBC Section 1807.1.5 Exception.
G. Delete CBC Section 1807.1.6
H. Amend CBC Section 2308.8.5 to read:
Floor, attic, and roof framing shall be laterally supported in accordance with AF & P A NDS Section
4.4.1.2.
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I. Amend CBC Section 2308.9.3 item #4 to read:
4. Fiberboard sheathing panels not less than 1/2 inch (12.7 mm) thick and not less than 4' x 8' (1219
mm x 2438 mm) in size, except at boundaries and changes in framing, applied vertically or
horizontally on studs spaced not more than 16 inches (406 mm) o.c., with all edges blocked.
Fasteners shall be in accordance with Section 2306.4.4 and Table 2306.4.4.
J. Amend CBC Sections 3109.2, 3109.3,3109.4,3109.4.1,3109.4.1.7,3109.4.1.9 and 3109.4.4.2
to read:
3109.2 Definition. The following word and term shall, for the purposes of this section and as used
elsewhere in this code, have the meaning shown herein.
SWIMMING POOLS. Any structure intended for swimming, recreational bathing, or wading that
contains water over 18 inches (457 mm) deep. This includes in-ground, above-ground, and on-
ground pools; hot tubs; spas and fixed-in-place wading pools.
3109.3 Public Swimming Pools. Public swimming pools shall be completely enclosed by a fence
at least 5 feet (1524 mm) in height or a screen enclosure. Openings in the fence shall not permit the
passage of a 4-inch diameter (102 mm) sphere. The fence or screen enclosure shall be equipped with
self-closing and self-latching gates.
3109.4 Residential Swimming Pools. Residential swimming pools shall comply with Section
3109.4.1 through 3109.4.3.
Exception: A spa with a safety cover complying with ASTM F 1346.
3109.4.1 Barrier height and clearances. Residential swimming pools shall be completely enclosed
by a barrier. Dwellings may serve as a portion ofthe required barrier when in compliance with the
requirements of Section 31094.1.8. The top of the barrier shall be at least 60 inches (1524 mm)
above grade measured on the side of the barrier that faces away from the swimming pool. The
maximum vertical clearance between grade and the bottom of the barrier shall be 2 inches (51 mm)
measured on the side of the barrier that faces away from the swimming pool. Where the top of the
pool structure is above grade, the barrier is authorized to be at ground level or mounted on top of the
pool structure, and the maximum vertical clearance between the top of the pool structure and the
bottom of the barrier shall be 4 inches (102 mm).
3109.4.1.7 Gates. Access doors or gates shall comply with the requirements of Section 3109.4.1.1
through 31 09.4.1.6 and shall be equipped to accommodate a locking device. Pedestrian-access doors
or gates shall open outward away from the pool and shall be self-closing and have a self-latching
device. Pedestrian-access doors or gates shall not be wider than 4 feet. Doors or gates other than
pedestrian access doors or gates shall have self-closing and self-latching devices. Gates other than
pedestrian-access gates are not required to be self-closing and self-latching when securely locked and
located adjacent to a pedestrian-access doors or gate. Electrically powered vehicle-access gates are
not permitted as a part of the barrier. Release mechanisms shall be in accordance with Sections
1008.1.9 and 1109.12. Where the release mechanism ofthe self-latching device is located less than
54 inches (1372 mm) from the bottom ofthe doors or gate, the release mechanism shall be located
on the pool side of the gate at least 3 inches (76 mm) below the top of the doors or gate, and the
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doors or gate and barrier shall have no opening greater than .5 inch (12.7 mm) within 18 inches (457
mm) of the release mechanism.
3109.4.1.9 Pool structure as barrier. Where an above-ground pool structure is used as a barrier
or where the barrier is mounted on top of the pool structure and the means of access is a ladder or
steps, then the ladder or steps either shall be capable of being secured, locked, or removed to prevent
access or the ladder or steps shall be surrounded by a barrier which meets the requirements of
Sections 3109.4.1.1 through 3109.4.1.8. When the ladder or steps are secured, locked, or removed,
any opening created shall not allow the passage of a 4-inch-diameter (102 mm) sphere. Lockable
or removable steps or ladders may be used as an alternate method of compliance with Section
3109.4.1.8, but not Section 3109.4.1.
3109.4.4.2 Construction permit; safety features required. Whenever a construction permit is
issued for construction of a new swimming pool not regulated in Chapter 31 B, it shall be isolated
from access by an enclosure that meets the requirements of Section 3109.4.4.3. When a wall of a
dwelling serves as part of the required enclosure, the following shall apply:
1. The residence shall be equipped with exit alarms on those doors providing direct access to the
pool; or
2. All doors providing direct access from the home to the swimming pool shall be equipped with
a self-closing, self-latching device with a release mechanism placed no lower than 54 inches (1372
nun) above the floor; or
3. The pool shall be equipped with an approved safety pool cover complying with ASTM F 1346.
Spas shall be protected by either a barrier meeting the requirements of31 09.4.4.3 or by an approved
cover complying with ASTM F 1346.
Other means of protection may be permitted, including that afforded by natural barriers, ifthe degree
of protection afforded is equal to or greater than that set forth above as determined by the Building
Official.
Existing pools shall be isolated from access by an enclosure which substantially meets the
requirements of Section 3109.4.4.3. When dwellings serve as part ofthe enclosure, exit alarms and
self-closing and self-latching devices are not required for pools and spas constructed and installed
prior to January 1, 1998.
Section 4. Title 16 (Buildings and Construction) is amended to renumber Chapter 16.03
and all sections contained therein and add a new Chapter 16.03 (Residential Code) and to add a new
Section 16.03.010 to the Redding Municipal Code is amended to read as follows:
Chapter 16.03 RESIDENTIAL CODE
16.03.010 California Residential Code adopted.
A. That certain document, a copy being on file and open for inspection in the City of Redding
Permit Center, marked and designated as "California Residential Code (CRC), 2010 Edition,"
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published by the International Code Council, is adopted as the residential building code of the city
and is included in and made a part of this code as though set forth at length herein.
B. Add the sentence "SDS shall be taken as greater than 0.50" to the end of California Residential
Code Section R301.2.2. 1. 1.
C. Amend CRC Section R404.1.4.1 to read:
Masonry foundation walls. In addition to the requirements of Table R404. 1. 1 (1) plain masonry
foundation walls in buildings assigned to Seismic Design Category Do, D] or D2, as established in
Table R301.2(1), shall comply with the following:
1. Wall heights shall not exceed 4 feet (1219 mm).
2. Unbalanced backfill height shall not exceed 3 feet (914 mm).
3. Minimum nominal thickness for plain masonry foundation walls shall be 8 inches (203mm).
4. Masonry stem walls shall have a minimum vertical reinforcement of one No.3 (No.1 0) bar
located a maximum of 4 feet (1219mm) on center in grouted cells.
5. Vertical reinforcement shall be tied to the horizontal reinforcement in the footings.
6. Foundation walls in buildings assigned to Seismic Design Category Do, D] or Db as
established in Table R30 1.2(1 ), supporting more than 3 feet (914 mm) of unbalanced backfill
or exceeding 4 feet (1219 mm) in heights shall be constructed in accordance with the
provisions of ACI 530/ ASCE 5/TMS 402 or NCMA TR68-A. Masonry foundation walls
shall have two No.4 (No. 13) horizontal bars located in the upper 12 inches (305mm) of the
wall.
D. Amend CRC Section R404.1.4.2 to read:
R404.1.4.2 Concrete foundation walls. In buildings assigned to Seismic Design Category Do, Dt
or D2, as established in Table R301.2(1), concrete foundation walls that support light-frame walls
shall comply with this section, and concrete foundation walls that support above-grade concrete
walls shall comply with ACI 318, ACI 332 or PCA 100 (see Section R404.1.2). In addition to the
horizontal reinforcement required by Table R404.1.2( 1), plain concrete walls supporting light-frame
walls shall comply with the following:
2. Wall height shall not exceed 4 feet (1219 mm).
4. Unbalanced backfill height shall not exceed 3 feet (914 mm).
6. Minimum thickness for plain concrete foundation walls shall be 6 inches (152 mm).
Foundation walls supporting more than 2 feet (1219 mm) of unbalanced backfill or exceeding 3 feet
(2438 mm) in height shall be provided with horizontal reinforcement in accordance with Table
R404.1.2(1), and not less than No.4 (No. 13) vertical bars at a spacing not exceeding 48 inches
(1219 mm).
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Section 5. Title 16 (Buildings and Construction), former Chapter 16.03 (Mechanical
Code) and former Section 16.03.010 of the Redding Municipal Code is renumbered to Chapter
16.04 and Section 16.04.010 respectively and amended to read as follows:
Chapter 16.04 MECHANICAL CODE
16.04.010 California Mechanical Code adopted.
A. That certain document, a copy being on file and open for inspection in the City of Redding
Permit Center, marked and designated as "California Mechanical Code, 2010 Edition," is adopted
as the mechanical code of the city and is included in and made a part of this code as though set forth
at length herein.
B. As an amendment to the California Mechanical Code, Sections 115.2 and 115.3 regarding fees
are deleted from this code.
Section 6. Title 16 (Buildings and Construction), former Chapter 16.04 (Plumbing Code)
and former Section 16.04.010 of the Redding Municipal Code is renumbered to Chapter 16.05 and
Section 16.05.010 respectively and amended to read as follows:
Chapter 16.04 PLUMBING CODE
16.05.010 California Plumbing Code adopted.
A. That certain document, a copy of which is on file in the City of Redding Permit Center, marked
and designated "California Plumbing Code, 2010 Edition,"is adopted as the plumbing code of the
city, and is included in and made a part of this code as though fully set forth at length herein.
B. As an amendment to the California Plumbing Code, Sections 103.4.1 and 103.4.2 regarding fees
is are deleted from this code.
Section 7. Title 16 (Buildings and Construction), former Chapter 16.05 (Electric Code)
and former Section 16.05.010 of the Redding Municipal Code is renumbered to Chapter 16.06 and
Section 16.06.010 respectively and amended to read as follows:
Chapter 16.06 ELECTRIC CODE
16.06.010 California Electrical Code adopted.
That certain document, a copy being on file and open for inspection in the City of Redding Permit
Center, marked and designated "California Electrical Code, 2010 Edition," is adopted as the
electrical code of the City, and is included in and made a part of this code as though set forth at
length herein.
Section 8. Title 16 (Buildings and Construction) is amended to add Chapter 16.07 (Energy
Code) and to add Section 16.07.010 to the Redding Municipal Code is amended to read as follows:
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Chapter 16.07 ENERGY CODE
16.078.010 California Energy Code adopted.
A. That certain document, a copy being on file and open for inspection in the City of Redding
Permit Center, marked and designated as "California Energy Code, 2010 Edition," published by the
International Code Council, is adopted as the energy code of the city and is included in and made a
part of this code as though set forth at length herein.
Section 9. Title 16 (Buildings and Construction) is amended to add Chapter 16.08 (Green
Building Code) and to add Section 16.08.010 to the Redding Municipal Code is amended to read as
follows:
Chapter 16.08 GREEN BUILDING STANDARDS CODE
16.08.010 California Green Building Standards Code adopted.
A. That certain document, a copy being on file and open for inspection in the City of Redding
Permit Center, marked and designated as "California Green Building Standards Code, 2010 Edition,"
is adopted as the green building standards code ofthe city and is included in and made a part ofthis
code as though set forth at length herein.
B. Amend Section 4.505.2.1 (1) to read:
A 4-inch (101.6mm) thick base of'i1 inch (12.7mm) orlargerc1ean aggregate shall be provided with
a vapor barrier consisting of 15mil polyethylene sheeting, or an approved equivalent, in direct
contact with concrete and a concrete mix design, which will address bleeding, shrinkage, and curling,
shall be used. For additional information, see American Concrete Institute, ACI 302.2R-06.
Section 9. Title 16 (Buildings and Construction), former Chapter 16.06 (Housing Code)
and former Section 16.06.010 of the Redding Municipal Code are renumbered to Chapter 16.09 and
Section 16.09.010 respectively to read as follows:
Chapter 16.09 HOUSING CODE
16.06.090 Uniform Housing Code adopted.
A. That certain document, a copy being on file and open for inspection in the office of the City
Clerk, marked and designated as "Uniform Housing Code, 1997 Edition," published by the
International Conference of Building Officials, is adopted as the housing code of the city and is
included in and made a part of this code as though set forth at length herein.
B. Section 202 is amended as follows:
SECTION 202 - SUBSTANDARD BUILDINGS
Buildings or portions thereof which are determined to be substandard as defined in this code are
hereby declared to be public nuisances and shall be abated by repair, rehabilitation, demolition, or
removal in accordance with the procedures specified in Title 15 of this code.
C. Sections 203.1 and 203.2 are deleted.
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D. Chapters 11 through 16 are deleted in entirety.
Section 10. The passage of this ordinance is not a "project" according to the definition in
the California Environmental Quality Act and therefore is not subject to the provisions requiring
environmental review.
Section 11. This ordinance shall take effect 30 days after the date of its adoption, and the
City Clerk shall certify the adoption thereof and cause its publication according to law.
I HEREBY CERTIFY that the foregoing ordinance was introduced and read by the City
Council at a regular meeting on the 16th day of November, 2010; and was duly read and adopted at
a regular meeting on the 7th day of December, 2010, by the following vote:
AYES:
NOES:
ABSENT:
ABSTAIN:
COUNCIL MEMBERS:
COUNCIL MEMBERS:
COUNCIL MEMBERS:
COUNCIL MEMBERS:
Bosetti, Dickerson, Jones, Sullivan, and McArthur
None
None
None
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Form Approved:
Attest:
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PAMELA IZE, City~~rk~
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RICHARD A. DUVERN , City Attorney
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