HomeMy WebLinkAboutOrd 4319 06/04/1991 ORDINANCE NO. 4319
AN ORDINANCE AMENDING THE VILLAGE CODE OF MOUNT PROSPECT
RELATIVE TO RAINFALL DATA
PASSED AND APPROVED BY
THE PRESIDENT AND BOARD OF TRUSTEES
the 4th day of June , 1991
Published in pamphlet form by
authority of the corporate
authorities of the Village of
Mount Prospect, Illinois, the
4th day of June , 1991.
AF
5/14/91
ORDINANCE NO. 4319
AN ORDINANCE AMENDING THE VILLAGE CODE OF
MOUNT PROSPECT RELATI~-E TO RAINFALL DATA
BE IT ORDAINED BY THE PRESIDENT AND BOARD OF TRUSTEES OF THE
VILLAGE OF MOUNT PROSPECT, COOK COUNTY, ILLINOIS:
SECTION ONE: That Section 22.102.B.4 of Article I of Chapter 22
of the Village Code of Mount Prospect, as amended, is hereby
further amended by deleting Section 22.102.B.4 in its entirety and
substituting therefor the following; so that hereinafter said
Section 22.102.B.4 shall be and read as follows:
" B.4. The live detention storage to be provided will be
calculated on the basis of the 1989 one hundred (100)
year frequency rainfall as published by the Illinois
State Water Survey for this area. The detention volume
required will be that necessary to handle the runoff of
a one hundred (100) year rainfall, for any and all
durations, from the fully developed drainage area
tributary to the reservoir, less that volume discharged
during the same duration at the approved release rate.
SECTION TWO: That Section 22.102.B.5 of Article I of Chapter 22
of the Village Code of Mount Prospect, as amended, ms hereby
further amended by deleting Section 22.102.B.5 in its entirety and
substituting therefor the following; so that hereinafter said
Section 22.102.B.5 shall be and read as follows:
" B.5. The design capacity of storm water detention and
retention basins shall be based upon the formulae of the
Metropolitan Water Reclamation District of Greater
Chicago (formerly known as the Metropolitan Sanitary
District of Greater Chicago) as outlined in Article 6-04
of the Manual of Procedures for the Administration of the
Sewer Permit Ordinance of the Metropolitan Water
Reclamation District of Greater Chicago, except as noted
in this Chapter. "
SECTION THREE: That Section 16.405.B.3.a of Article IV of Chapter
16 of the Village Code of Mount Prospect, as amended, is hereby
further amended by substituting the following; so that hereinafter
said Section 16.405.B.3.a shall be and read as follows:
" a. The average rainfall intensity used for design shall be
selected from rainfall-intensity curves based on the 1989
Illinois State Water Survey rainfall data. "
SECTION FOUR: That this Ordinance shall be in full force and
effect from and after its passage, approval and publication in
pamphlet form in the manner provided by law.
AYES: Busse, Clowes, Corcoran, Floros, Wilks, Hoefert
NAYS: None
ABSENT: ~0ne
PASSED and APPROVED this 4th day of June , 1991.
ATTEST: Village President /
Carol A. Fields, Village Clerk