HomeMy WebLinkAbout09/22/2015 COW AgendaCOMMITTEE OF THE WHOLE
AGENDA
Meeting Location:
Mount Prospect Village Hall
50 S. Emerson
CALL TO ORDER - ROLL CALL
Meeting Date and Time:
Tuesday, September 22, 2015
7:00 p.m.
Mayor Arlene A. Juracek
Trustee Paul Hoefert Trustee Richard Rogers
Trustee John Matuszak Trustee Colleen Saccotelli
Trustee Steven Polit Trustee Michael Zadel
APPROVAL OF MINUTES OF THE COMMITTEE OF THE WHOLE FOR
SEPTEMBER 8, 2015
CITIZENS TO BE HEARD
IV. LEVEE 37 DRAINAGE STUDY REPORT
Levee 37 was constructed by the United States Army Corps of Engineers to
prevent Des Plaines River flood waters from inundating properties west of River
Road in Mount Prospect (the village) and Prospect Heights. The Mount Prospect
portion of the levee system features two (2) pump stations (pump stations #1 and
#2). These pump stations facilitate release of water from the storm sewer
system when high river levels restrict the normal gravity discharge of the storm
sewer system.
During high river level events, check valves close to prevent river water from
inundating adjacent properties via the storm sewer system. This modus was the
cause of record flooding during high river level events in 1986 and 1987.
The check valves were installed in 1991 and have proven highly effective at
preventing river water inundation.
Levee 37 was constructed in 2011. A principle assumption applied to the design
of the pump stations was that the coincidence of high river levels (tailwater) and
significant rainfall on the land side of the levee system was extremely
remote. This assumption was based on analysis of rainfall data and river levels
recorded prior to 1990.
As a consequence, the pump stations were designed to primarily rely on normal
gravity discharge to dewater the storm sewer system.
Unfortunately, on dozens of occasions, properties west of River Road have
experienced flooding due to the inability of the gravity discharge and pump
stations to release water to the Des Plaines River at a sufficient rate. On all of
these occasions, the storm sewer gravity discharge has been occluded by
tailwater in the river while the land side of the levee has simultaneously been
subject to heavy rains.
Earlier this summer the village hired Christopher B. Burke Engineering, LTD.
(CBBEL) of Rosemont, Illinois, an engineering consulting firm with expertise in
stormwater management, to examine existing conditions and develop
recommendations to improve the performance of storm sewer systems tributary
to Levee 37. Their work has culminated in a final report available for viewing and
download on the village website ( .mount iro sector lleveedraina + ).
Representatives from CBBEL, along with Public Works Department staff, will
present the final report's findings and facilitate discussion.
V. MANAGER'S REPORT
o Status
VI. ANY OTHER BUSINESS
VII. ADJOURNMENT
NOTE: ANY INDIVIDUAL WHO WOULD LIKE TO ATTEND THIS MEETING BUT BECAUSE OF A DISABILITY NEEDS SOME
ACCOMMODATION TO PARTICIPATE, SHOULD CONTACT THE VILLAGE MANAGER'S OFFICE AT 50 SOUTH EMERSON,
MOUNT PROSPECT, ILLINOIS 60056, 847/392-6000, EXTENSION 5327
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