TO: Mayor Edward “Bud” Caulfield
of the Lowell
F. Lynch, City Manager
DATE: February 15, 2008
RE: CC Motion of 01.15.08 by
Construction Update (February, 2008)
McCarthy, Assistant City Manager/DPW Commissioner has met regularly with Mark
Young, Executive Director of Waste Water in regards to the Combined Sewer
Overflow (CSO) project and provided updates as requested. I am pleased to report that most of the
construction work on Chelmsford
Street for the Weed/Wellman Sewer Separation
Project was successfully completed on December 21, 2007, just before the
Christmas holiday. I would like to
recognize Mark Young, Executive Director of Wastewater as well as his staff,
for a job well done. The Utility started
this project in mid-September 2007 with an ambitious schedule to complete 6
months of construction work in a 3-month period of time. This sewer separation work is part of the
City’s Combined Sewer Overflow (CSO) Sewer Separation Program mandated by the
US Environmental Protection Agency (EPA)
The accelerated schedule was
established by the Utility to complete the construction work prior to the end
of 2007 and to help minimize disruptions to local businesses and residents. To
accommodate our schedule, the construction contractor, Baltazar Contractors,
Inc., performed an accelerated schedule of 10-hour work days, as well as
working on some Saturdays. A City Council sub-committee working with area residents
and businesses, the Contractor, Police and Fire Departments and our engineering
consultant, CDM, was instrumental in helping to address and resolve local
disruptions and concerns.
In addition to the expedited
schedule, the project provided many construction challenges as it involved the
installation of new large diameter drainage pipe (up to 60 inches in diameter)
- Coordination of the excavation work and relocation of
many existing buried water mains, sewer mains and services, gas, telephone,
and electrical conduits to provide room for the new drain.
of significant quantities of the city’s old infrastructure including
abandoned streetcar rails, ties, and cobblestones, which all required
additional effort for excavation and disposal.
bypasses to maintain existing sewer force mains along the route, and
relocations of a force main due to a direct grade conflict with the new
deep excavations up to 18 feet deep for replacement of sewer mains and new
of rock and boulders encountered in the excavation that had to be drilled
and rammed in order to remove them from the trench.
All of this excavation work
eventually required most of the full-width of Chelmsford Street to be torn up. Thus, the work required significant daily
coordination to minimize disruptions to traffic and local access for residents
and businesses. An overall traffic detour plan was coordinated with Lowell
Police and Fire departments, and signage was provided to direct business
customers around the construction activities.
Overall, the work completed by our
contractor included the installation of:
- 2,900 feet of new mainline drain sized 12-inch to
feet of replacement water main sized 8-inch to 12-inch diameter.
feet of replacement sewer main sized 8-inch to 24-inch diameter.
catch basin installations, with connections to the new drain system.
of the 66-inch diameter River Meadow Brook Outfall and concrete headwall
paving on all trenches.
While all of the pipe installation
along Chelmsford Street
is completed for this contract, final paving of Chelmsford Street is scheduled for Summer 2008 in order to provide time for the trench to
settle. Meanwhile, the contractor continues
to maintain the temporary pavement that was installed for the winter, and will
respond to any problems that might arise as a result of the work.
Remaining contract work on adjacent side streets to Chelmsford Street will
resume in March 2008, pending weather conditions. These include Newell Street, Wellman Street, Upham Street, Usher Street, Norcross Street,
and Midland Street.
Another portion of this contract work is in the Weed Street
neighborhood including Gorham
Street. Fay Street, Lundberg Street, Anderson
Street, Stromquist Street, Corbett Street, Cosgrove Street, Bowden Street, and
Chippewa Street. This work should start
in Spring 2008.
I hope this information is helpful. If you have any questions, please let me
know. Thank you.