Tunnel Business Magazine

FEB 2018

TBM: Tunnel Business Magazine is the market leader for North America. TBM is written for leading professionals in all aspects of tunneling and covers project stories, design elements, contracting strategies, legal issues, new technology and more.

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Page 35 of 43

TUNNELINGONLINE.COM 3 6 TBM: TUNNEL BUSINESS MAGAZINE // FEBRUARY 2018 DISTRICT OF COLUMBIA Washington Division H – Anacostia River Tunnel Impregilo Healy Parsons JV This $254.9 million project for DC Water is substantially complete with final completion schedule ch 13, 2018. As of Jan. 2, the project was 98% complete by schedule. The e was complete . 5, 2016. Dur- ing its driv ossed under the Ana- costia River, several fragile utility lines and several freeways without damage. Only mi- nor concrete and site restoration work are left to c oject personnel will be moving to the follow-on Div Boundary T oje arriv ch/April 2018. The Anacostia River Tunnel was delivered using design-build and featured the extensive use of slurry walls, and included depressur- izations of lower artesian aquifer while leav- ing upper aquifer undisturbe advance used conveyor belt system through multiple curves with a vertical belt storage unit exterior to the shaft. Other unique fea- tures included: steel fiber precast segmental lining; extensive use of geotechnical instru- ments f cavation perfor- mance; and use of compensation grouting to cross under fragile critical utilities. Designer: Parsons Professional Corp.; Construction Manager: Gilbane; Major Sub- contractors: etrench, Con-Seg, Bulldog Construction, SECA, Kelly Ele - chanical. TBM Manufacturer: Herrenknecht. Convey er: H+E. Key Project Personnel – Proje Shane Yanagisawa, Deputy Proje ea Sess unzer, - ager: Jonathan Taylor, General Superinten- dent: Garry Horner, Eq Chuck Tedford, Electrical Superintendent: Bruce Haught, Concrete Superintendents: Jimmy Hill, Robb Brunner, Stuart Casasola, Tom Alexander, Senior Concrete Engineer: Scott Shylanski. Information: John Kennedy, (702) 524-0438. Washington Northeast Boundary Tunnel Salini Impregilo/S.A. Healy JV DC Water issue TP for the $580 million unnel in December omponent of DC Water's Clean Rivers Project. The soft ground tunnel will be 23-ft in diameter, con- structed with precast concrete segments, ap- proximately 50-to 160-ft below the ground surface. Diversion facilities will be construct- ed to capture flows from the existing sewer system and divert them into the tunnel. In addition to the tunnel and diversion facilities, onstruction of ventila- tion control facilities, stormwater inlets and green infrastructure. Brierley Associates is the Engineer-of-Re- cord for the Design/Build team. Subconsul- tants to Brierley Associates are: Aldea Servic- es, LLC; Concrete Consultants Group, LLC; DLZ Corporation; EBA Engineering, Inc.; Kroner Environmental Services, Inc.; Subsurface & Tunnel Engineering, LLC; and Tunnelconsult Engineering SL. Project completion is scheduled for 2023. GEORGIA Atlanta Water Supply Program Atkinson The City of Atlanta Department of Wa- tershed is converting a more than 100-year-old quarry into a 2.4 billion- gallon raw water storage facility. The sys- tem consists of a deep hard rock tunnel, two deep pump stations, two dropshafts and multiple connecting adits and shafts. Bored with a R om tunnel portal at the quarry base, the tunnel is approximate- ly 24,000 ft long, 250 to 450 ft deep, 13 ft in bore diameter, and is partially concrete lined with modified contact grouting to control water infiltration/exfiltration. The project is being delivered via a Construction t Risk ( chanism. The program design will address the objec- tives of achieving 100 years of asset life- cycle and flexibility in system operations. The estimated cost of design and construc- tion for conveyance and water storage is ap- proximately $300 million. t Station 120+55 which is slightly over halfway. The deep pump station shafts have been com- pleted. Four of the five blind-bored shafts, to a depth of approximately 425 ft, have been completed. Project completion is scheduled for September 2019. Stantec is the engineer of record for design of shafts and tunnels. ILLINOIS McCook McCook Reservoir Des Plaines Inflow Tunnel Walsh Construction This $107.7 million project f o- politan Water Resources D ) includes approximately 5,800 ft of 20-ft ID tunnel with two shafts (one permanent and one for construction to be abandoned at completion of work). Entire tunnel is in dolo- mite limestone and is being constructed via drill-and-blast methods. Tunneling is nearing completion and lining has begun. The tunnel has two live connections, one on each end. On one end it will connect to 's existing Des Plaines Tunnel system and on the other it will con- nect to the liv ok Reservoir, which was scheduled to go online in December cannot shut down either the tunnel or the reservoir to accommodate the connections so all work will be heavily weather dependent. TP was issued on July 9, 2016. Completion is scheduled by Jan. 23, 2020. The designer is Black & Veatch. Key Project Personnel – evin Fitzpatrick, Carmen Scalise, Patrick Jensen. ary Hirner. INDIANA Fort Wayne Three Rivers Protection and Overflow Reduction Tunnel (3RPORT) Salini-Impregilo /Healy JV This $188 million project for the City of Fort Wayne – City Utilities consists of 24,500 lf of tunnel, 16 ft ID, segmentally lined, excavated t a depth of approximately 200 ft. Starter and tail tunnel construction are being built by drill-blast method. There are three large-diameter shafts (between 28 and 70 ft diameter) supported with slurry walls through overburden and excavated through rock with drill-blast. There are 13 small-diam- eter (4 to 10 ft diameter) shafts excavated with blind drill method. The alignment crosses through limestone of the Wabash Formation with anticipated high groundwater inflow in the range of 5,000 gpm to 10,000 gpm at 6.5 bar pressure. The Contract Award was April 26, 2017. TP was issued y 1, 2017, with site work starting immediately thereafter - zation is expected ar y 2018. Substan- tial completion will be around August 2021. Tunnel Designer: Black & Veatch; Con- Key Project Personnel: Owner/City of Ft Wa ensic, TJ Short; Tunnel De- signer: Black & Veatch: Leo Gentile (Senior Proje tthew Pierce (Project Glen Adams (R - ager); Contractor: Salini-Impregilo/Healy JV: John Kennedy (Project Dire ed Lechner (Proje (Construction e Waddell (Chief Engineer). Information: John Kennedy at jkennedy@sahealy.com or 702-524-0438. Indianapolis Deep Rock Tunnel Connector, Eagle Creek Deep Tunnel Shea-Kiewit JV The Deep Rock Tunnel Connector is a 42,000-ft, 20-ft, 2-in. diameter bored tunnel with an 18-ft finished concrete lining (ap- proximately 250 ft deep). There are two bifur- cations in the final alignment and three CSO connecting structures/deaeration chambers and adits. The Eagle Creek Deep Tunnel is a 9,175-ft, 20-ft, 2-in. bored tunnel with an 18-ft finished concrete lining. Total contract value for both segments is approximately $220 mil- lion. The work is for Citizens Energy Group's DigIndy project, which is a CSO reduction pro- gram including six deep rock tunnels totaling over 28 miles. The project achieved Substan- tial Completion in mid-December 2017, and the system began accepting CSO flow near the end of December 2017. Key Project Personnel – Christian Heinz, P.E.; Assistant Proje - er/Project Engineer: Percy Townsend; Safety yle Shickles; Equipment Superin- tendent: Keith Walter; Field Engineers: Eric Haacke, Zack Heinrich, Kendall Gadd, Chris Inspection PM: Alex Varas, P T U N N E L U P D A T E S

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