HomeMy Public PortalAboutORD 298-01-24_Requirements for Stormwater Features_01232024Instrument~ 1761533
Bo n nevi l le County, Idaho Falls , Idaho
01 /3 0 /2 0 24 03 :09 :18 PM No . of Pages : 3 jw
Res or ded f or CI TY OF JONA
Pe nny Mannin g Fee : $0 .00 Ex -Of fic.io Re cord e r De put, __________________________ _
I nd e x to ORDIN ANCE
ORDINANCE NO. 298-01-24
AN ORDINANCE OF THE CITY OF IONA , IDAHO;
AMENDING SECTION 10-1-3(A)(38) OF THE IONA CITY
CODE; REVISING THE DEFINITION OF ST AND ARD
SPECIFICATIONS ; AMENDING SECTION 10-1-17(D) OF THE
IONA CITY CODE; REVISING REQUIREMENTS FOR
STORMW ATER FEATURES AND THEIR DESIGN;
PROVIDING METHODOLOGY; PRESERVING PRIOR
ORDINANCES IN EACH INSTANCE; PROVIDING FOR
SEVERABILITY; AND ESTABLISHING AN EFFECTIVE
DATE.
BE IT ORDAINED BY THE MAYOR AND CITY COUNCIL OF THE CITY OF IONA ,
IDAHO THAT:
Section 1. Amendment of Section 10-1-3(A)(38) of the Iona City Code. Section
10 -1-3(A)(38) of the Iona City Code is amended as follows:
(38) STANDARD
SPECIFICATIONS:
The most recently issued Idaho Standards for
Public Works Construction, 2017 Edition~
modified by the standard specifications and
drawings adopted by the City from time to time.
Section 2. Amendment of Section 10-1-17(D) of the Iona City Code. Section
10-1-17(D) of the Iona City Code is amended as follows:
(D) Grading and Hydrologic Considerations.
(1) All Public Ways other than sidewalks shall have a minimum vertical (longitudinal)
grade of0.4 percent, with the maximum grade being 7 percent for major Streets and
10 percent for Alleys or local/minor Streets. Stormwater features8 1.vales in the
Development shall be utilized in a manner that will prevent flooding in the lower
elevations of the Development during rain or snow melt on frozen ground events .
(2) Hydrologic calculations are to be used to demonstrate success of the grading plan .
1.3 inches multiplied by the contributing area will be sufficient to calculate volume
of stormwater to be captured in the swales underground.Sizing criteria shall utilize
Rational Method Calculations with the minimum rain intensity and infiltration
values provided in the Standard Specifications.
(3) Infiltration trenches may be used at periodic low points created with adverse
longitudinal grading in the Public Way profiles to ensure flooding does not occur at
the lower elevations of the Development. Driveways across swales shall be
graded or have culverts installed so as to avoid impeding the flow of surface waters.
(4) Hydrologic design for curb-and-gutter Public Ways may be completed with the use
of accepted engineering principles and the Subdivision Directi ves.
Section 3. Methodology. Text that is underlined in the preceding sections means new
text added to the former Ordinance or City Code Section, and text that is stricken through means
text that is being deleted from the former Ordinance or Code Section. Text that is moved from
one location in the former Ordinance or Code Section to another location is similarly shown as
underlined text, being stricken through in its prior position.
Section 4. Preservation of Prior Ordinance. The sections of the Iona City Code
repealed and/or amended by this Ordinance shall be preserved to the extent necessary to allow the
arrest, prosecution, punishment, and indebtedness of any person who violates such provisions
prior to the effective date hereof.
Section 5. Severability. The sections and subsections of this Ordinance are severable.
The invalidity of any section or subsection shall not affect the validity of the remaining sections or
subsections.
Section 6. Effective Date. This Ordinance shall become effective upon its passage ,
execution and publication in the manner provided by law.
PASSED BY THE COUNCIL AND APPROVED BY THE MAYOR this } ;rdday of
Cfan.ua~ , 2024.
.
Daniel Gubler
Mayor
ATTEST:
STA TE OF IDAHO )
)ss.
County of Bonneville )
I, KERI WEST , CITY CLERK OF THE CITY OF IONA , IDAHO , DO HEREBY
CERTIFY: That the above and foregoing is a full , true and correct copy of the Ordinance entitled ,
"AN ORDINANCE OF THE CITY OF IONA , IDAHO; AMENDING SECTION 10 -1-3(A)(38)
OF THE IONA CITY CODE; REVISING THE DEFINITION OF STANDARD
SPECIFICATIONS; AMENDING SECTION 10-1-17(D) OF THE IONA CITY CODE ;
REVISING REQUIREMENTS FOR STORMW ATER FEATURES AND THEIR DESIGN;
PROVIDING METHODOLOGY; PRESERVING PRIOR ORDINANCES IN EACH
INSTANCE; PROVIDING FOR SEVERABILITY; AND ESTABLISHING AN EFFECTIVE
DATE."
i
Keri West
City Clerk
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