Underground Infrastructure - July 2023 - 37

REHABTECHNOLOGY
Emergency Repair of Unexpected Leak
Tim Peterie and Steve Soldati, P.E.
Created in 1951, by the Texas Legislature,
North Texas Municipal Water District
(NTMWD) consists of 10 original
member cities, including Farmersville,
Forney, Garland, McKinney, Mesquite,
Plano, Princeton, Rockwall, Royse City
and Wylie. By 1956, this new agency was
providing water to the region.
By the 1970s, the district expanded
its service to wastewater systems and
added three new member cities, including
Richardson, Allen and Frisco, between
1971 and 2001. With an ever-expanding
region for NTMWD to operate
and maintain, it was paramount for its
leadership to find innovative methods to
maintain its water and wastewater system
and keep up with demand.
By the numbers, NTMWD serves up
to 80 communities/water authorities
covering
approximately 2,000 square
miles in 10 counties. Two million people
live within 80 District communities
that make up one of the fastest-growing
regions in the United States.
There are 18 major raw and treated
water pump stations, six water treatment
plants, over 610 miles of water
transmission pipelines, over 226 miles
of large-diameter wastewater pipelines,
13 wastewater treatment plants, and
a total capacity of over 163 MGD of
wastewater treatment.
NTMWD provides high-quality and
dependable water, wastewater and solid
waste services in a cost-efficient manner
with four main goals: service, stewardship,
partnership, and people. These
UndergroundInfrastructure.com | JULY 2023 37
goals drive the day-to-day operations
and influence NTMWD's approach to
improving and maintaining the extensive
system.
Water and wastewater municipalities
and agencies develop capital improvement
programs to enhance or
expand
their
infrastructure
critical to responding most efficiently
and effectively.
Surprise
This was the case with a lift station and
system.
This is the more structured method of
properly evaluating the system improvement
needs and the available funding.
However, the infrastructure that municipalities
operate and maintain does not
wait for a capital improvement program
to be developed before it decides to fail.
The nation's infrastructure deteriorates
at different rates, depending on
several factors, and it is difficult to determine
the exact time when a pipeline
is going to fail. Responding with all the
proper information and tools at hand is
force main in the city of Plano, Texas.
The Lower White Rock Creek Lift
Station collects wastewater from the surrounding
area and pumps the raw sewage
through approximately 27,000 linear feet
(LF) of sewer force main with varying diameters
from 16 inches to 27 inches. The
force main begins as a 16-inch diameter
pipeline at the Lower White Rock Creek
Lift Station and, along the way to the final
discharge vault, upsizes in diameter as it
accommodates seven interconnects.
Approximately 12,700 LF of 16-inch
force main was constructed in 1978 and,
due to the area's growth over the years,
the 24-inch and 27-inch diameter exten
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Underground Infrastructure - July 2023

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Underground Infrastructure - July 2023 - 1
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