Over 40 percent of our sewer collection system is over 70 years old and requires some form of replacement or rehabilitation. We experience sanitary sewer overflows from our manholes and our treatment plant which put our environment and citizens at risk. To provide the highest level of sewer service to our citizens, the City is inspecting all 122 miles of pipe and over 2000 manholes to identify the areas that need repair or replacement. This survey will help us plan to efficiently use our sewer dollars for these projects.
This is a lengthy process and the City has contracted with the firm Burgess & Niple
to help us with these investigations. This page will provide updates on our progress and provide important information.
If you have any questions or concerns, the City Engineer may be contacted at 903-988-4118 or email@example.com
The primary methods for assessing our collection system are:
Physical inspection - This involves examining the physical condition of manholes and other sewer structures to determine their structural integrity and to identify possible sources of infiltration/inflow (I/I).
Flow monitoring/flow isolation - Rainfall gauges and flow measuring devices are installed to collect and analyze flow data during normal and storm related weather events.
Smoke testing - Smoke testing is used to locate specific defects (leaks) in sewer mains and laterals that contribute infiltration/inflow to the sewer system. Smoke testing involves injecting a non-toxic vapor (smoke) into the manholes and following its path of travel in the mains and laterals.
Dye water flooding - Colored dye is added to the storm drain water. Dyed water appearing in the sanitary sewer system indicates an existing connection between the sewer and storm drain system.
Closed-circuit television inspection - This is a useful tool in locating specific sources of infiltration as well as determining the structural condition of the sewer system. This information is necessary for the design of sewer replacement and rehabilitation projects.
Review of Sewer maintenance records - Records of frequent maintenance problems
CLICK ON THE BUTTON TO SEE WHERE CREWS ARE WORKING
CURRENT WORK PHASES
As of September 8, 2016
Smoke testing has begun. Crews will be distributing door hangers in your neighborhood to let you know when they will be in the area. The pictures below are what you can expect to see in and around your homes. Please make sure the traps in your homes, especially floor drains, have water in them. In the unusual event smoke enters your home or business, contact a plumber as this may be an indication of broken plumbing in your home or business. The smoke is non-toxic and non-staining. Please see the map above for exact locations of testing.
As of September 12, 2016, flow monitoring and rainfall measurement has been completed. During that time, we experienced a long dry spell followed by a very wet August. The data collected will now be analyzed to determine the extent of rainwater inflow and infiltration into the wastewater system.
PHYSICAL INSPECTIONS OF MANHOLES
The manhole inspections are ongoing throughout the duration of the project. Manholes and sewer lines are located on or near your property and crews will be accessing these to take measurements and video inspections. Crews will be driving Burgess & Niple vehicles and wearing safety orange shirts with their logo as seen in the picture below.
CURRENT PROGRESS as of August 25, 2016
1422 – Inspected manholes
3 – Abandoned manholes
36 – Buried manholes
25 – Surcharged manholes
314 – Unable to locate manholes
57 – Unable to open manholes
34 – Inspected cleanouts
5 - Unable to locate cleanouts
3 - Unable to open cleanouts
446 – Found end of line connections
34 - Main Line Cleanouts