Timber Creek Water and Sewer Replacements

The project consists of the construction of approximately 6400 linear feet of sewer line by pneumatic pipe bursting, approximately 3200 linear feet of water line by static pipe bursting, and approximately 900 linear feet of water line by open cut.

Background

The water and sewer lines are being replaced because of past maintenance issues. Pipe bursting methods will be primarily used for this project, since they are less impactful to residents than traditional open cut and more cost efficient due to reductions in excavation needed, pavement repairs and construction time.

Project Limits

Water lines will be replaced along Sweetgum Court, Pepperwood Drive, White Oak Court, and sections of Spring Meadow Lane. Sewer lines will be replaced along Spring Meadow Lane.

Map of project limits (blue lines indicate water mains; green lines indicate sewer mains)

Construction Process

Traffic Control Implementation – lane closures may be required in construction zones; detours may be used on a limited basis during daytime operations.
The contractor will locate existing utilities (i.e. water, sewer, cable, gas, etc.) prior to excavation.
Pavement and sidewalk placement repairs, as needed.
Traffic control will be removed, as required – lane closures will be relocated as work zone shifts.
The contractor will perform landscape restoration, irrigation repairs, and final clean up.

Water Main Pipe Bursting

The contractor will install an aboveground temporary water main, which will be pressure tested, disinfected, flushed, and tested to ensure water is safe for drinking.
Individual water service lines will be disconnected from the existing water main and reconnected to the temporary water main (service disruption – see below).
The contractor will excavate to disconnect existing main from water distribution system (service disruption – see below).
New PVC water main will be pulled through existing water mains by using a static pipe bursting method.
The contractor will connect the new main to the Town water distribution system, then the new main will be isolated by use of valves.
The new water main will be tested to show it can hold pressure, then it will be disinfected, flushed, and tested to ensure water is safe for drinking.
Once the new water main passes tests, the contractor will connect service lines to the new water main, then remove temporary water main (service disruption – see below).
Continue pipe bursting at new location until work is complete.

Water Main Pipe Open Cut (along Spring Meadow Lane, east of Eads)

The contractor will install an aboveground temporary water main, which will be pressure tested, disinfected, flushed, and tested to ensure water is safe for drinking.
Individual water service lines will be disconnected from the existing water main and reconnected to the temporary water main (service disruption – see below).
The contractor will excavate to disconnect existing main from water distribution system (service disruption – see below).
The contractor will remove the existing water main and replace it with a new PVC water main using an open cut method.
The contractor will connect the new main to the Town water distribution system, then the new main will be isolated by use of valves.
The new water main will be tested to show it can hold pressure, then it will be disinfected, flushed, and tested to ensure water is safe for drinking.
Once the new water main passes tests, the contractor will connect service lines to the new water main, then remove temporary water main (service disruption – see below).

Sewer Main Pipe Bursting

The contractor will install a temporary sewer bypass system.
The existing sewer main will be cleaned, and video will be taken to identify potential issues (service disruption – see below).
A new HDPE water main will be pushed through the existing sewer main by use of a pneumatic hammer; the existing sewer main will be accessed from excavation pits and/or manhole (service disruption – see below).
The new sewer main will be tested for leaks.
The new sewer main will be cleaned and video will be taken to identify potential issues.
The contractor will connect individual service lines to the new sewer main and remove the bypass system.
Continue pipe bursting at new location until work is complete.

Service Disruptions

Planned water service disruptions will occur during the work week, typically lasting 4-6 hours between the hours of 9 a.m. to 5 p.m.
Planned sewer service disruptions will occur during the work week, typically lasting 4-8 hours between the hours of 9 a.m. to 5 p.m.

The contractor, in coordination with Town staff, will provide notification of service disruptions no less than 72 hours prior to disruptions.

What to expect during construction?

Noise

Pipe bursting operations are comparable to traditional open cut methods in overall volume of construction activities. In general, the duration of construction is shorter for pipe bursting than it is for open cut. Pneumatic pipe bursting (sewer) is typically louder than static pipe bursting (water). Sound dampening methods will be used to minimize noise.

Ground Vibration

Pneumatic pipe bursting (sewer) utilizes a hammer to break an existing pipe, which results in ground vibration. The minimum separation distance considered safe between pneumatic pipe bursting operations and a residential structure in good condition is 8-feet.

Storage of Materials

The contractor will make use of lane closure areas and a portion of Spring Meadow Park for storage of materials, such as pipe.

Property Damage

The contractor shall promptly repair any damage that occurs to property to at least the same condition prior to damage and subject to the owner’s approval.

Working Hours

7 a.m. to 7 p.m., Monday-Friday
9 a.m. to 5 p.m., Saturdays (contractor’s choice)
No work on Sundays or holidays (minor tasks may be allowed on Sundays or holidays under special circumstances, i.e. pumping stormwater out of an excavation pit).

Project Schedule

Bids were opened September 8, 2022
Construction contract was awarded October 17, 2022
Projected Start: January 2023
Projected Substantial Completion: October 2023
Projected Final Completion: December 2023

Project schedule could be affected by unforeseen events such as utility conflicts or inclement weather.

Project Notifications

Town Website
Construction Projects – interactive map showing project information and status updates
Notify Me – sign up to receive notifications related to construction projects being performed in Flower Mound

Questions

If you experience any problems or have any concerns or questions about the project, feel free to contact the project engineer.

Dale Crown, P.E.
Senior Project Engineer
Town of Flower Mound
972- 874-6302
Dale.Crown@flower-mound.com