Complete report - Partners for Clean Streams

area (as recommended in the Point Place Flow Monitoring and Evaluation Study
(January 1995)) was to convert the preliminary diagnosis into firm conclusions as to
the presence, location and magnitude of the inflow and infiltration. Systematic
methods were used to locate defects in the manholes and sewers, sources of
infiltration and inflow, and deficiencies in the sewer system, including smoke testing,
manhole inspections, internal television inspection, flow isolations, and dye testing.
Results of the survey confirmed the presence and location of several potential
sources of inflow and infiltration in 16 basins, with moderate and severe infiltration and
inflow related to rainfall. For each potential source located, an estimated volume of
infiltration and inflow was attributed based on the condition of the source and the
potential source was evaluated to determine whether the source could be reduced or
eliminated. The cost of rehabilitation and removal was compared to the cost of relief
or replacement sewers required for transport and treatment.
Survey results located or identified the following: broken pipe, cracked pipe, offset
joint, open joint, root intrusion, blockages, and connections with storm sewers.
Recommended projects were divided into two phases. The projects recommended in
Phase I will reduce some major deficiencies and significantly reduce the sanitary
sewer overflows in the Point Place sanitary sewer system. Phase 1 projects include:
- Manhattan Boulevard Pump Station
- Eliminate Cross-Connections with Storm Sewers
- Clean Sewers
- Replace Deficient Sanitary Sewer
After Phase I projects were completed, the system was to be evaluated as part of
project certification. After project certification, Phase II projects will be reevaluated.
Phase II projects will eliminate the remaining sewage sanitary overflows by
transporting the excess sewage to an equalization basin or directly to the treatment
plant if capacity is available. Phase II would occur between 2002-2006. Currently
recommended Phase II projects include:
- Eliminate 290 th Street Sanitary Relief Pump Station
- Eliminate 145 th Street Pump Station
- Rehabilitate the 129 th Street Lift Station
- Construct relief sewers in Edgewater Drive
- Construct an Equalization Basin at the wastewater treatment plant
Lead Organization:
City of Toledo
Combined Sewer Overflow Impact Study
1997
Description:
This Impact Study recommended the following projects to further abate Toledo’s CSO
impacts to the Ottawa River:
- Partial separation of Lagrange Area - scheduled for completion 2000.
- Partial separation of Monroe South area (in 2002)
- Ottawa River CSO storage/treatment facility (Phase 1 - Lockwood, Ayers,
and Monroe – in 2002)
- Ottawa River CSO storage/treatment facility (Phase 2 - Lagrange,
Windermere and Devilbiss - in 2004)
Activities and Accomplishments
in the Maumee Area of Concern
179
Issue 6: Combined
Sewer Overflows