September 2013, Vol. 25, No.9

Projects

A North Dallas suburb water resource recovery facility 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., each 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 neighborhood. 

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 California 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 awarded 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 system.  

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.  

The 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. 

 

  

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