Cleanwater Nashville

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Additional updates

Broadway, Van Buren overflows eliminated

Date added: 11-Aug-2015 09:27 AM

Broadway, Van Buren overflows eliminatedMetro Nashville is making significant progress toward improving Cumberland River water quality, eliminating two downtown combined sewer overflow (CSO) points. Closing the Broadway and Van Buren CSO’s reduces the number of Davidson County overflow points by 25 percent and reduces the amount of contaminated stormwater and wastewater flowing directly into the Cumberland River.
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Clean Water Nashville OAP begins project work

Date added: 23-Feb-2017 02:28 PM

Clean Water Nashville OAP begins project workThe Clean Water Nashville Overflow Abatement Program initiated construction on the following major projects in the second quarter of 2012:

  • Expansion of storage capacity at the MWS Driftwood CSO Equalization Facility on Driftwood Street
  • Expansion and other improvements to the Dodson Chapel Pumping Station and Equalization Facility

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Music City Center features green roof

Date added: 11-Aug-2015 09:32 AM

Music City Center features green roofThe recently completed Music City Center is on track to be certified Silver Level LEED – Leadership in Energy and Environmental Design – by the U.S. Green Building Council.

One of the elements that will be considered during the certification process is the building’s green roof, designed to reduce the convention center’s overall energy usage.
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Washington CSO Control Facility goes online

Date added: 11-Aug-2015 09:35 AM

Washington CSO Control Facility goes onlineA major combined sewer facility providing optimization for wet weather storage, screening and control of floatables and solids went online in April of this year. In addition to providing treatment, the facility dramatically reduces the number of overflows at the Washington outfall, and reduces the volume of overflows by approximately 90 percent annually.

Constructed at a cost of approximately $17 million, it was operationally complete in time to meet the Consent Decree milestone.
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Natural setting shapes repair approach

Goal is limiting environmental impact

DAVIDSON COUNTY’S SURROUNDING environment is an ever-present factor in how the Clean Water Nashville Program plans construction repairs on aged and defective wastewater infrastructure.

The Westchester Drive Rehabilitation project, located in the Belshire community between Belshire Drive and Dickerson Road in northern Nashville, is a prime example of the efforts to minimize construction impacts and limit environmental disturbances.

This project will rehabilitate approximately 3,850 linear feet of sewer pipe that runs along and crosses underneath the North Fork of Ewing Creek, a Whites Creek tributary. Cracked 10-, 15- and 18-inch diameter pipes within this local system have been allowing rainfall, creek water, and groundwater to seep in and take up capacity in the sewer system. This kind of infiltration may result in flow rates that exceed the capacity of the sewer system, resulting in sanitary sewer system overflows.

The program team evaluated two options to update the infrastructure in the project area. One option was to dig out the extensive pipe system and install new infrastructure, an approach that could cause considerable disturbance to the creek, including removal of established vegetation along the waterway.

The second alternative, which was selected, was to rehabilitate the current sewer system through a method known as “cured in-place pipe lining.” In this trenchless rehabilitation method, a pipe lining is placed in the existing sewer and is cured to form a rigid pipe within the existing sewer that effectively seals cracks and prevents water infiltration.

Rehabilitating the existing sewer pipe infrastructure rather that replacing it with new pipes will achieve the same outcome while minimizing impact to the North Fork of Ewing Creek.

Westchester Drive Rehabilitation construction began in June and is scheduled to be complete in November 2015.