INFO@LAYNE.COM | For more information, or to speak with an expert please visit us at WWW.LAYNE.COM  © 2014 Layne. All Rights Reserved.

 

Every project needs water storage to balance demands.

Layne understands the complex environmental issues related to reservoir and dam design and construction. Layne routinely provides complete water supply systems, including pumping, piping and earthen pond storage components. Layne's ability to self-perform this work is unique to the industry, allowing Layne to provide the best value by offering single-source responsibility, enhanced safety, improved schedule coordination and cost savings.

RESERVOIRS Layne offers new construction and improvements of reservoirs and includes the following associated services: large diameter raw water conveyance pipelines, multi-story intake and metering structures, and pump stations. Layne’s reservoir experience includes the design and construction of lined, earthen embankment reservoirs with capacity up to 580 million gallons with embankment fill depths to 77 linear feet for municipal and power raw water storage. Tank storage experience includes many configurations of pre-stress, CIP concrete and steel tanks. DAM CONSTRUCTION AND IMPROVEMENTS, REMEDIATION OR REPAIR Layne has experience in constructing new dams as well as reconstructing drainage and monitoring systems. Layne offers an array of technologies related to water retention and flood control structures. These services can be applied during the construction or rehabilitation of dams and levees, and provide solutions for a variety of geotechnical challenges such as seepage, seismic or liquefaction concerns, structural instability, or unsuitable foundation soils and bedrock. Specific technologies addressing these issues include deep slurry / diaphragm cutoff walls, grout curtains, high-capacity strand anchors, jet grout cutoff walls and sonic drilling methods.

PROJECT DELIVERY FLEXIBILITY Layne offers the delivery method that meets the client's project goals. Layne's project delivery experience includes lump-sum bid, design-build, design-build-operate, engineer procure construct, guaranteed maximum and construction manager at risk. Layne staff partners early with the client's operations personnel and the design professional to understand the performance goals and constraints. Layne's partnering attitude and value engineering expertise quickly evolve a cost-effective design and construction plan. Financing options are available.

COMMITMENT TO SAFETY AND THE ENVIRONMENT As the responsible growth company, Layne is committed to safety and sustainability in everything it does. Layne understands that production, quality and safety are all needed and are equally important to the success of any project. Layne realizes the environmental impact that construction projects can have on a community and is committed to the long-term health and safety of its people and the communities it touches. Layne's purpose is to enhance the lives of people by providing and protecting the world’s essential natural resources – and it all begins with safety.

   

WATER SUPPLY: RESERVOIR AND DAM CONSTRUCTION

INFO@LAYNE.COM | For more information, or to speak with an expert please visit us at WWW.LAYNE.COM  © 2014 Layne. All Rights Reserved.

 

EXAMPLES OF OUR SUCCESS  

SANDY CREEK ENERGY: SANDY CREEK ENERGY STATION RECLAIMED WATER & EFFLUENT SYSTEMS PROJECT – LS POWER FACILITY $24.9 Million – Completion 2010 – Riesel, TX This project includes the construction of a 15 MGD reclaimed water pumping and distribution system. Notable features include a Reclaimed Water Pump Station, Effluent Water pipelines, Terminal Storage Pond for a new coal fired power station outside Waco, Texas.

ATLANTA-FULTON COUNTY: WTP IMPROVEMENTS PHASE 2.5 $45.7 Million – Completion 2007 – Atlanta, GA This project involved additions to an existing water treatment plant and is a joint venture between Layne Heavy Civil and Beers Skanska. Included in the scope of work is the construction of a new 580 MG Raw Water storage reservoir, new large diameter RW conveyance pipelines, multi-story intake and metering structures, pump station and various plant improvements for redundancy and reliability.

WESTERN-SUMMIT CONSTRUCTORS, INC. FOR DEKALB CO. WATER AUTHORITY: SCOTT CANDLER RESERVOIR $22 Million –Completion 2001 – Dekalb County, GA

This project included the following: provide and install 10,500 linear feet of 72 inch to 108 inch diameter Prestressed Concrete Cylinder Pipe, Construction of a new reservoir featuring 77-foot fill depth and 755,000 cubic yards of embankment, Complete renovation and enlargement of two existing earthen reservoirs with 24-foot fill depth and 550,000 cubic yards of embankment, Extensive ditching and drying were required to condition the material for placement purposes., Total excavation, placement and compaction of approximately 1,850,000 cubic yards of fill material.

USACE – NEW ENGLAND DISTRICT: HOP BROOK LAKE DAM SEEPAGE REMEDIATION Completed 2011 – Waterbury, CT Layne installed a 700 ft long triple line grout curtain along the existing foundation cut-off alignment beneath the dam embankment at Hop Brook Lake in Middlebury, Connecticut. The alignment of the curtain was extended from both abutments down to the upstream toe in the center, thus forming a V-shape. The grout curtain consisted of three lines, 5 feet apart, with primary holes drilled at 20 foot spacing. The holes comprising the upstream and downstream lines were vertical while the center line consisted of holes inclined 15 degrees to the south or west along the curtain's alignment.

CLEARWATER LAKE DAM MAJOR REHABILITATION PROJECT Wayne and Reynolds County, MO, USA

Bencor, a Layne company, installed a concrete cutoff wall along the full length of the Clearwater Dam for the US Army Corps of Engineers (USACE), Little Rock District, to mitigate significant groundwater seepage beneath the foundation. The cutoff wall length was approximately 4,000 lineal feet and approximately 200 feet deep. The maximum penetration into rock was approximately 170 feet. Due to the large quantity of rock that was excavated with strengths up to 27,000 psi, Bencor modified its fleet of hydromills to effectively penetrate this material. Total wall surface was 705,000 SF with a width of 32 to 42 inches. Bencor’s efforts contributed to The Clearwater Lake Dam Major Rehabilitation Team, Little Rock District receiving the USACE Team Dam Safety Award of Excellence for 2012.