UCT - Sewer/Water
Tuesday, January 24 <?xml:namespace prefix = o />
Room 102B Track II-A
SEWER CONSTRUCTION & REHABILITATION
8:30 - 8:55 a.m.
Using Grout To Control Water Movement, Infiltration In Complex Projects
Moderator: Dale Kornegay, BorTunCo
Speaker: Daniel Magill, President, Avanti International
Acrylamide grout was selected to address groundwater seepage on three unique projects. Each project provided special circumstances and geological conditions: pre-excavation grouting for combined sewer overflow tanks, 27 miles of leaking subway and encapsulation of radioactive hazardous waste. Acrylamide grout was chosen primarily for its specific characteristics: thinnest grout on the market, no suspended solids, adjustable set times and a 362-year half-life in soil as determined by the U.S. Department of Energy.
9 - 9:25 a.m.
Citizens Energy Group Deep Tunnel Storage System
Moderator: Dale Kornegay, BorTunCo
Speaker: John Morgan, Manager-Special Projects Group, Citizens Energy Group
Details of the city of Indianapolis’ Dept. of Public Works consent decree (CD) plan that originated in 2006 to improve their collection system and wastewater treatment plants will be outlined. After several amendments to the CD, the city was allowed to convert shallow tunnels to deep tunnels. The schedule, as well as the geotechnical considerations of the below ground surface system will be covered.
9:30 - 9:55 a.m.
Structural Rehab & Bypass Chamber Construction For A Major Treatment Plant
Moderator: Patrick Mann, Magnum Tunneling/Bortunco
Speakers: Datta Shirodkar, PE, Project Manager, Boyer Inc.; Michael Spero, PE, President, Danby LLC
Houston’s 35-year old Almeda Sims WWTP Influent Pump Station flooded and required emergency repairs. Additional work was needed to provide long-term stability including replacing suction valves and piping, rebuilding pumps, constructing a proprietary design 20-foot diameter permanent PVC lined bypass chamber 50’ deep over the existing 84” sewer to allow access to the wet well. Also included was the Grouted-In-Place-Lining of an 84” connecting sewer, junction chamber, and gate operating chamber.
10 - 10:25 a.m.
Is The Economy Dictating Your Rehab Strategy?
Moderator: Patrick Mann, Magnum Tunneling/Bortunco
Speaker: Hani Tohme, PhD, PE, Director-Water Utilities, City of Beaumont
Insufficient funding due to economical or political reasons can cause interruptions in the rehabilitation efforts of municipalities’ capital improvement projects that in turn allow the deterioration of old pipes to occur at a faster rate than the rehabilitation efforts, thereby increasing the volume of I/I into the sanitary sewer network. It is recommended that municipalities should change their operations from a patch and repair mentality to a rehabilitate and replace strategy.
The presentation will highlight the city of Beaumont's last five years of sanitary sewer rehabilitation experiences to introduce a concept that is being evaluated and adopted by cities throughout the United States.
10:30 - 10:55 a.m.
Implementing A Major Project Designed To Maximize Gravity Flow Using Underground Construction Techniques
Moderator: Frank Marino, PE, HR Green
Speaker: David Raby, PE, President-Water, HR Green
This presentation will describe the overall design and construction process used when implementing a 13-mile long, 60 MGD capacity wastewater pipeline project in Minnesota. Specific project approaches included: (1) minimizing the use of force mains, maximizing the use of gravity lines; (2) prequalifying tunneling contractors prior to bidding; (3) conveying wastewater effluent down a bluff and into the Mississippi River; and (4) installing a pipeline across active barge channels.
11 - 11:25 a.m.
Design Of Trenchless Rehab For The 96-Inch Diameter Elm Fork Interceptor
Moderator: Jason Iken, PE, Public Works & Engr., City of Houston
Speakers: Wayne Hunter, PE, Manager, Espey Consultants; Craig Crowder, Trinity River Authority of Texas
A 17,200 LF, large diameter RCP line constructed in 1984 lies directly below recreational urban land use. The CIPP and spiral wound trenchless rehabilitation methods have been specified for the project. The basis of trenchless design, the outcome of bids and the measures taken for ensuring a reliable renewal project applied to a large diameter wastewater pipeline will be presented.
1 - 1:25 p.m.
Lessons Learned From Implementing A Sewer Rehab Program – Leveraging The Power Of GIS/CMMS Tools
Moderator: Jason Iken, PE, Public Works & Engr., City of Houston
Speaker: Terry Moy, PE, MACE, Mgr. Program Management/Engineering, Clayton County Water Authority
Sewer rehabilitation programs involve the collection and evaluation of huge amounts of information. Temporary flow monitoring, Sewer System Evaluation Surveys data including manhole inspections, smoke/dye flood testing, Closed Circuit Television as well as information from innovative and emerging technologies can generate an overwhelming data bank. Interpreting this data and making smart decisions about rehabilitation and prioritizing collected information for future use can become a major bottleneck in implementing the “find” and “fix” process. This session will present the results of re-energizing a sewer system rehabilitation program using processes customized from available Geographic Information System and computerized maintenance management systems automated processing tools.
1:30 - 1:55 p.m.
Laredo Project Eliminates Illegal Connections, Separates Combined Sewer
Moderator: Russell Ford, Lockwood, Andrews & Newnam
Speakers: Riazul Mia, PE, CFM, Director-Environmental Services and Tomas Rodriguez, Utilities Director, City of Laredo
In phase 1 of the city of Laredo, TX efforts to eliminate illegal or illicit sanitary sewer connections and improve the existing storm water drainage system located along Flores Street, an existing combined 24” sewer is being converted to a sanitary sewer by rehabilitating the existing sewer and designing a separate storm sewer system. The storm sewer system is a 42” trunk line to be completed by hand tunneling to limit disruptions to the project area, which is in Laredo’s central business district.
2 - 2:55 p.m.
Real World Test Protocols For Products Used In Infrastructure Rehabilitation
Moderator: Russell Ford, Lockwood, Andrews & Newnam
Speaker: C. Vipulanandan, PhD, PE, Professor/Director-CIGMAT & THC‑IT, Dept. of Civil and Environmental Engineering, University of Houston
Quickly evaluating the performance of various new products introduced to the market to rehabilitate various infrastructures in a reasonable period is critical. To meet these requirements, test protocols must be developed for approval by the owners, regulatory agencies and product manufactures. Various test protocols and verification programs will be reviewed and analyzed. These controlled verification programs will be of assistance to manufactures, suppliers, engineers and owners.
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