1. Project Location: Schrader Lane, Nashville, Tennessee
2. Diameter of line, sewer pipe material (RCP, MCIP, brick, etc.), length of rehab portion: 96” Brick pipe, 841 LF. The host pipe had loose brick, voids and cracks that were visible to the surface.
3. When was it constructed and how long has it been in service: Unknown
4. Rehab method used: Danby PLIIIE 1” Spiral wound method was used for rehabilitating this combination sewer.
5. Cleaning method used (if required) and who cleaned the line: The contractor, Veolia, hydro-blasted the host pipe and removed any sewer debris.
6. Method of flow bypass or diversion, if used: This pipe connected to a Diversion Junction Chamber served as a combo that included an overflow, the flow levels were monitored to ensure that there was no overflow entering this pipe, normal was dry unless wet weather events.
7. Depth of pipe: 1-2' from ground surface. In some areas the top of the host pipe was visible from the surface.
8. Depth of ground water: This pipe was under a wetland area.
9. Ventilation and odor control used: A curtain was installed to keep upstream sewer gases out of work area as well as ventilation included forced air. Standard Permit required confined space protocol was used.
10. Construction cost (total amount and cost per foot): Unknown
11. Month and year of start-up and end of construction: 8/2011 to 11/2011
12. Problems encountered during construction: None.
13. Problems encountered after construction: None.
14. Health and safety: Monitoring of upstream flow and standard permit required confined space protocol was used.
15. Has any re-inspection been performed? Unknown
George Kurz, P.E., DEE
Barge Waggoner Sumner & Cannon, Inc.