A North Dallas suburb water resource recovery
renewed more than more than 488 m (1600 ft) of water lines using cured-in-place
pipe. Inland Pipe Rehabilitation (The Woodlands, Texas), a
trenchless-infrastructure solutions provider, performed the work using a unique
pressure-pipe renewal system provided by RS Technik (Zug, Switzerland) and using
Dow Chemical (Midland, Mich.) custom-formulated resins.
The cities of Fort Worth, Texas, and North
Little Rock, Ark.,
chose RJN Group Inc. (RJN; Wheaton, Ill.) for design and inspection projects.
For Fort Worth, RJN will design 1219 linear m
(4000 linear ft) of 300-mm (12-in.) water main and 1562 linear m (5124 linear
ft) of sanitary sewer interceptors. The interceptors are in four locations in a
predominantly commercial and industrial area adjacent to a historic
In the first location, 537 linear m (1762
linear ft) of 1350-mm (54-in.) sanitary sewer improvements crossing Lake
Arlington will be designed using open-cut, trenchless, and cured-in-place pipe
(CIPP) rehabilitation methods. Trenchless and open-cut techniques also will be
used at the second location, where RJN is redesigning 301 linear m (986 linear
ft) of existing 900-mm (36-in.) and 300 linear m (983 linear ft) of existing
750-mm (30-in.) sanitary sewer replacement mains. RJN will evaluate the
feasibility of combining the 900-mm and 750-mm pipes into a single sewer main,
which would cross state Highway 303 and several 300-mm high-pressure gas and
saltwater-return mains. The third location is in Quail Lane along the Lake
Arlington shoreline. This project consists of the design of 425 linear m (1393
linear ft) of existing 975-mm (39-in.) sanitary sewer main, which will be
performed with a combination of open-replacement and CIPP rehabilitation
methods. The fourth location involves improving water service to the Exelon
(Chicago) power plant and surrounding areas.
To extend a redundant water supply feed, RJN
is designing 1219 linear m of new 300-mm water mains. This line would be
constructed using trenchless and open-cut methods and includes a railroad and
Highway 303 utility crossings.
The design of all these projects is scheduled
to be completed by January, with construction beginning thereafter.
In North Little Rock, RJN is performing, for
the second year, sewer system evaluation study services. The study will take
place in the Lakewood area of the city, which consists of approximately 605 ha
(1500 ac) and has six lakes that flow from north to south. RJN will perform
field services, such as manhole inspections, smoke testing, dyed-water
flooding, and concurrent-dyed-water flooding with closed-circuit television.
Along with field services, RJN will provide project administration, data
management, and public relations services, flow monitoring analysis,
closed-circuit television data review, and analysis of the field data.
The Water Replenishment District of Southern
received from the U.S. Department of Interior’s Bureau of Reclamation a $1.7
million WaterSMART grant to expand its Leo J. Vander Lans Advanced Water
Treatment Facility in Long Beach. The expansion will increase facility capacity
from 11,355 m3/d (3 mgd) to 30,280 m3/d (8 mgd),
eliminating the need for imported water to be used in the Alamitos Barrier. The
facility treats effluent water from the Sanitation Districts of Los Angeles
County’s water resource recovery facility using microfiltration, reverse
osmosis, and ultraviolet treatment. The facility is used at the Alamitos
Barrier to prevent seawater intrusion into the Central Groundwater Basin and to
replenish water pumped from the basin.
The DC Water board of directors
Impregilo–Healy–Parsons (Washington, D.C.) a $254 million design–build contract
to design and construct the second portion of a massive tunnel system that will
bring relief from combined sewer overflows (CSO) to the Anacostia River.
This is DC Water’s second-largest contract to
date. It is part of the larger Clean Rivers Project, a $2.6 billion program to
reduce by 96% CSOs to the Anacostia and Potomac rivers and Rock Creek. Named
the Anacostia River Tunnel, this portion will be 7 m (23 ft) in diameter,
extend 3749 linear m (12,300 linear ft), and cross under the Anacostia River.
It begins at Poplar Point and ends near RFK Stadium.
Construction will start at the north and work
south, connecting to the Blue Plains Tunnel in 2017. The design–build contract
also includes six shafts and three diversion structures needed as part of the
Parsons (Pasadena, Calif.) is a 35%
shareholder in the design–build joint venture and the lead designer.
Parsons, along with a joint venture partner, also
was selected by the San Antonio Water System as construction manager at risk
for the utility’s critical brackish groundwater desalination program. The $86
million contract includes preconstruction-phase collaboration with San Antonio
Water System program management and design teams, construction of all program
components, and 6 months of water resource recovery facility (WRRF) operations.
scope of work includes 13 raw water production wells; raw and finished water
conveyance; residual conveyance; three deep-injection wells; a 37,850-m3/d
(10-mgd) reverse-osmosis membrane WRRF; a 28,390-m3/d (7.5-mgd)
finished-water storage reservoir; chemical treatment systems; supervisory and
data acquisition controls; and a new administration building that incorporates
a public tour route, pilot WRRF, and training facility.