HomeMy WebLinkAboutFINAL ORDINANCE NO. 08-043CITY OF LAKE ELMO
COUNTY OF WASHINGTON
STATE OF MINNESOTA
ORDINANCE NO.08-043
AN ORDINANCE APPROVING MINOR REVISIONS TO SECTION 150.283
AND SECTION 150.287 OF THE CITY CODE GOVERNING STORM WATER
AND EROSION AND SEDIMENT CONTROL
Section 1. The City Council of the City of Lake Elmo hereby ordains that Section
150.283 subdivision (A) (1) (a) is hereby amended to read as follows:
a) Any land development activity that increases and/or replaces impervious
surface with a surface area exceeding one acre, including smaller individual
sites that are part of a common plan of development that may be constructed
at different times; and/or
Section 2. The City Council of the City of Lake Elmo hereby ordains that Section
150.283 subdivision (A) (2) (b) and (c) are hereby amended to read as follows:
b) . Reconstruction of existing public trails and construction of new public trails
that are not a part of a proposed land development activity as defined in (A)
(1) above.
c) Reclamation and maintenance of existing public streets.
Section 3. The City Council of the City of Lake Elmo hereby ordains that Section
150.287 subdivision (A) (2) (b) (i) and (c) (i) are hereby amended to read as follows:
b) Rate Control Requirements
i) The rate of storm water runoff discharge in from a proposed site
shall not be greater than the rate of storm water runoff
discharging prior to the proposed site alteration for the 2-, 10-
and 100-year storm events. Storm water best management
practices to meet this requirement shall be designed and
constructed in accordance with the most current version of the
City Engineering Design Standards. The City Engineer retains
the authority to require the above conditions to apply to the rate
of storm water runoff discharging at any point leaving the site.
The analyses for the rate of storm water runoff shall be
calculated using the Soil Conservation Service Type II time
distribution for the 2-, 10-, and 100-year 24-hour storm events.
The rate of storm water runoff prior to the proposed
development shall be calculated at the pre -settlement condition
as defined in the State of Minnesota Stormwater Manual for a
"meadow" condition based on the applicable Hydrologic Soil
Group(s) for the development (see Table 1).
c) Volume Control Requirements
i) The volume of storm water runoff discharging from a proposed
site shall not be greater than the volume of storm water runoff
discharging prior to the proposed site alteration for the 2-, 10-,
and 100-year storm events. Storm water best management
practices to meet this requirement shall be designed and
constructed in accordance with the most current version of the
City Engineering Design Standards. The City Engineer retains
the authority to require the above conditions to apply to the
volume of storm water runoff discharging at any point leaving
the site.
Section 4. Adoption Date
This ordinance shall become effective immediately upon adoption and publication in the
official newspaper of the City of Lake Elmo.
This Ordinance No. 08-043 was adopted on this 3r ay of May, 2.00111,
Ayes and ONays.
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Bruce A. Messelt, City Administrator
This Ordinance No. 08-043 was published on the$ day of lci 2011.
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