CSO Reduction Projects

Based on the Implementation Schedule included in the LTCP several projects in the various phases of implementation included in the plan may be in progress at any given time. The following sections provide information regarding the progress of each project currently being completed with pertinent information along with progress photos which illustrate the construction progress or location of the respective project.



project

WWTF Phase I - Headworks

Replacement of the existing headworks facility at the wastewater treatment facility with a new enclosed facility rated at 48 MGD with screens and grit removal. The enclosure and grit removal will be supplemented with odor control equipment to reduce odor at the facility attributed to the influent wastewater.


Project Location:
Wastewater Treatment Facility - SR 63S
City Project Manager:
Brad Utz
CSO LTCP Program Manager Representative:
Lon Gardner
Design Consultant:
HNTB Corporation
Contractor:
Reynolds, Inc.
Project Status:
Completed March 2012
  • During Construction.

  • During Construction.

  • During Construction.

  • Inside completed headworks.

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WWTF Phase II

Renovation of all areas of the existing treatment facility, exclusive of the headworks facility completed in Phase I. Improvements include but are not limited to new aeration tanks, secondary clarifiers, biosolids dewatering, handling and storage tanks, Ultra-Violet disinfection, new administrative building, new vehicle maintenance building and all other miscellaneous work. Improvements will increase the capacity of the facility to 48 MGD as required for the implementation of the City's CSO LTCP.


Project Location:
Wastewater Treatment Facility - SR 63 South
City Project Manager:
Mark Thompson
CSO LTCP Program Manager Representative:
Eric Smith, P.E. - HWC Engineering
Design Consultant:
HNTB Corporation (Prime Consultant), United Consulting, Commonwealth Engineering, HWC Engineering, Greeley Hansen and Synthesis Design
Contractor:
Plocher Construction
  • Construction Status95%

  • Excavation - lagoon backfill

  • Shoring being constructed in tank 3.

  • Spraying body coat on tank.

  • Placing concrete for southeast wall section.

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CSO 009/010 Floatables Control Structure

Construction of a new structure to capture floatalbe material at the Spruce Street CSO (CSO 010). Structure contains two perforated rotary drum screens which capture floatable material from overflows and direct the material into the existing main interceptor sewer. Structure contains piping diverting flow from the existing overflow sewer to the new structure and discharge piping to both the existing overflow and the main interceptor. Structure will ultimately handle flows from both the Chestnut and Spruce Combined sewer systems as the Chestnut Street flows will be diverted to the Spruce System via a new consolidation sewer in Fourth Street. Flows which exceed a specifed level will activate the rotary drum screens and brushes which will capture floatable material and allow excess flows to over top weirs and discharge through the structure to the existing outfall. Normal flows will pass through the structure to an effluent sewer discharging to the main interceptor conveying flows to the system's Main Lift Station.


Project Location:
Spruce St Outfall to Wabash River
City Project Manager:
Larry Robbins, P.E.
CSO LTCP Program Manager Representative:
Lon Gardner
Design Consultant:
CHA Consulting
Contractor:
F.A. Wilhelm Construction
Project Status:
Completed October 2014
  • CSO-010 Floatable Control Screening Structure

  • CSO-010 Floatable Control Screening Structure

  • CSO-010 Floatable Control Screening Structure

  • CSO-010 Floatable Control Screening Structure

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CSO 004/011
Floatables Control and In-Line Structure

Construction of a new structure to capture floatalbe material at the Idaho Street CSO (CSO 011). Structure contains two perforated rotary drum screens which capture floatable material from overflows and direct the material into the existing main interceptor sewer. Structure contains piping diverting flow from the existing overflow sewer to the new structure and discharge piping to both the existing overflow and the main interceptor. A new 96" sewer connects the Hulman Street Combined Sewer to the new structure. The Hulman Street CSO will be subsequently closed during the project. Flows which exceed a specifed level in the structure will activate the rotary drum screens and brushes which will capture floatable material and allow excess flows to over top weirs and discharge through the structure to the existing outfall. Normal flows will pass through the structure to an effluent sewer discharging to the main interceptor conveying flows to the system's Main Lift Station. Gates are included in the structure which allow for storage of cso flows in the existing Hulman Street Trunk sewer up to specified elevations until downstream facilities are able to handle the flows or overflows occur.


Project Location:
Idaho Street Outfall to Wabash River
City Project Manager:
Larry Robbins, P.E.
CSO LTCP Program Manager Representative:
Eric Smith, P.E. - HWC Engineering
Design Consultant:
Arcadis
Contractor:
Thieneman Construction, Inc.
  • Design Status100%

  • Construction Status10%

  • Existing Access Road to 011

  • Pond Adjacent to Project Site

  • CSO 004-011

  • CSO 004-011

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Main Lift Station Site
High Rate Treatment Facility

Construction of a new 16.5 MGD High Rate Treatment Facility with chemical addition, clarification and UV disinfection of CSO flows which exceed the capacity of the treatment facility (48 MGD) and Main Lift Station flow (approximately 45 MGD). Facility will be first phase of two 16.5 MGD units which are being constructed adjacent to the former international paper lagoons in lieu of the CSO storage option originally included in the approved LTCP. A supplemental force main will be constructed from the existing Main Lift station to convey flows to the new facility.


Project Location:
Main Lift Station/Former International Paper Site (CSO 002/003)
City Project Manager:
Chuck Ennis, P.E.
CSO LTCP Program Manager Representative:
Eric Smith, P.E. - HWC Engineering
Design Consultant:
Commonwealth Engineers
Contractor:
Thieneman Construction, Inc.
  • Design Status100%

  • Construction Status20%

  • Bottom Slab Looking West

  • Bottom Slab Steel

  • PVC Water Stop at Wall Base

  • Steel for Column Pads

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CSO 009/010 Consolidation Sewer

Construction of a new 66" sewer in 4th Street and existing parking areas in the ISU campus to connect the Chestnut and Spruce Street Combined Sewer Systems. New diversion structures will be included to divert all flow in the Canal Sewer, currently discharging to the Chestnut sewers, to the Spruce system and ultimately the new Spruce Street Floatables Control Structure which will allow the closure of the Chestnut Street CSO (CSO 009), or conversion CSO 009 to purely stormwater


Project Location:
Fourth Street Between Sycamore and Spruce Streets
City Project Manager:
Chuck Ennis, P.E.
CSO LTCP Program Manager Representative:
Eric Smith, P.E. - HWC Engineering
Design Consultant:
United Consulting
Contractor:
Atlas Excavating
  • Design Status100%

  • Construction Status100%

  • 4th Street and Lafayette

  • Barrel Section on Structure

  • Doghouse Manhole Installed

  • Location of Diversion

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Large Diameter Sewer

Rehabilitation of existing sewers which will be surcharged and utilized for "in-line" storage of CSO flows during rain events until capacity is available in downstream systems and facilities. Control of the stored flows will be made by structures in the new CSO 004/011 Floatables Control/In-Line Storage Control Facility located at the Idaho Street Outfall. Rehabilitation of existing sewers will be via Cured-in-place pipe material or spray applied shotcrete with reinforcement. Sewers to be rehabilitated range in size from 42" to 80".


Project Location:
14th and 15th Streets from Hulman Street to Ohio Street; Canal Sewer from 9 1/2 Street to Lafeyette Avenue; Elm Street from Lafeyette Avenue to 8th Street
City Project Manager:
Larry Robbins, P.E.
CSO LTCP Program Manager Representative:
Lon Gardner - HWC Engineering
Design Consultant:
Greeley and Hansen
Contractor:
Proshot Concrete, Inc.
  • Design Status100%

  • Construction Status90%

  • CIPP Lining Set-up

  • CIPP Lining Set-up

  • CIPP Lining Set-up

  • Prepared for Shot Crete

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  • Every year millions of gallons of combined sewage, stormwater, and debris overflow to the Wabash River.
  • The overflows cause increased E. coli readings and other pollution to the river.
  • The City of Terre Haute is undertaking a program to reduce the number of overflows to the river.
  • The goal of the CSO Reduction Program is to have a cleaner city, resulting in a cleaner river.