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SSES Services – Wood Dale,
IL
The City of Wood Dale, Illinois, selected us to
conduct a sewer system evaluation survey (SSES) over a four-year period.
The Phase
I program, identified by the City for 1996, involved
identification and flow metering of key manholes and
lift stations in the major sanitary drainage basins,
observation of manholes within a previously defined
problem drainage basin, and smoke testing of sanitary
sewers within that drainage basin. The main purpose of
the key manhole and lift station metering program was to
prioritize drainage basins for further study.
The Phase
II program included a sewer system evaluation survey in
priority drainage basins. SSES tasks included smoke
testing, a manhole cover survey, rainfall simulation,
night-time sewer gauging, and review of sewer TV
inspections. A capacity evaluation of the intercepting
sewer system in areas where surcharging was observed
during flow monitoring was also conducted.
An interim
report was prepared that included a summary of all
structural defects and Infiltration/Inflow (I/I) sources that were
identified. A method of rehabilitation was recommended
for each defect or I/I source, and rehabilitation costs
were projected. The sources of I/I were then arranged
on a priority basis, with sources having the lowest cost
per unit of I/I removed shown first. An interim
rehabilitation program was developed and a preliminary
eight-year Capital Improvement Plan was prepared. This
plan was coordinated with the City’s street
reconstruction program.
Over 100 miles of
sanitary sewer were evaluated in the Madison vicinity
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Madison Metropolitan Sewage District – Madison, WI
Following an Infiltration/Inflow (I/I) Analysis that was
completed by the Madison Metropolitan Sewage District (MMSD), we performed a sewer system
evaluation survey (SSES) on part of the MMSD service
area. This evaluation involved more than 100 miles of
sanitary sewer and included major areas within the City
of Madison and several surrounding communities,
including Monona, Middleton, Maple Bluff, Waunakee,
Fitchburg, Dunn, and other smaller sanitary districts.
All SSES data collected for MMSD’s
interceptors and the City of Madison’s system was
analyzed and included in the final report. Over 11,000
gpm of I/I was quantified during the I/I Analysis and SSES. Following the SSES Report, we prepared plans and
specifications for sewer rehabilitation in the entire
project area and provided construction related
engineering services.
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