University of Kentucky Center for Applied Energy Research

October 1st, 2015

Location: Lexington, KY
Client/Owner: University of Kentucky
Services: Materials Testing

Thelen Associates, Inc. performed construction review services for the University of Kentucky’s Center for Applied Energy Research Building 2 located at Spindletop Research Park. Our services included soil compaction testing, concrete testing and review of drilled shaft installations. The Center for Applied Energy Research Laboratory is a multidisciplinary research center which focuses on energy related industries. The new 36,000 square foot facility houses The Kentucky Biofuels Laboratory, in addition to new labs for process development, prototype manufacturing and applied research on batteries, capacitors, solar energy materials and biofuels.


Work performed by Thelen Associates, Inc.


Cannelton Hydroelectric Project

October 1st, 2015

Location: Hawesville, Kentucky
Client: American Municipal Power, Inc.
Services: Materials Testing

Project Description
The Cannelton Project is located on the Kentucky shore of the Cannelton Locks and Dam located on the Ohio River 721 miles below Pittsburgh, Pennsylvania. It is three miles upstream from Cannelton, Indiana. The navigation locks are located on the right descending bank or Indiana side of the river. The upper pool maintained above the dam extends upstream for a distance of 114 miles to the McAlpine Locks and Dam at mile 607 and for a short distance up the Salt River. The Powerhouse will enclose three horizontal-shaft bulb turbines with an expected running diameter of 7.5 meters. Each generator will produce approximately 28 MW at a 6.9 kV buss voltage for a total of 84 MW and 390,000 mwhs annually. Each generator buss will connect to the main step-up power transformers and then switch gear and take-off structure on top of the entrance building to the powerhouse and on to the 138kV transmission line. The transmission line will extend approximately 8.3 miles from the plant and will connect to a Louisville Gas and Electric substation.

Scope of Services
Thelen Associates, Inc. has been retained by the Owner, American Municipal Power, Inc. as the Materials Testing Consultant for this project. Due to the size and magnitude of this project, Thelen has established on-site laboratory testing facilities (construction trailers). These trailers (3) have been retro-fitted to accommodate aggregate, cement, concrete and soil testing applications. Additional laboratory Testing Program is to assist the Owner’s Engineer (MWH Americas, Inc.) in monitoring and confirming the Powerhouse Contractor’s (Walsh) Quality Assurance and Quality Control Programs during the construction of this 3 year project. Various types of testing services are being performed, in both field and on and off-site laboratory applications, for soils, cement, aggregates, concrete placement, soil-cement applications and other miscellaneous construction materials. Since the start of this project in March, 2011, Thelen has provided anywhere from 3 to 5 various levels of Certified Engineering Technicians on a daily basis. The Contractor is working 2 shifts per day on this project in order to meet the owner’s schedule.


Worked performed by Thelen Associates, Inc.





MSD Combined Sewer Overflow Remediation

December 27th, 2012

Owner: Metropolitan St. Louis Sewer District
Client: Jacobs
Location: St. Louis, Missouri
Services: Geophysics, Geotechnical, DrillingSoils and Materials Laboratory Testing

Metropolitan Sewer District (MSD) has begun its $4.7 billion, 23‐year, wastewater/stormwater system overhaul to remediate the combined sewer system originally built before the Civil War and the first system to be built west of the Mississippi River. Obviously the needs and laws have changed in the last 150 years and the system needs to be improved to be compliant with USEPA and MDNR standards. These improvements will include technology updates, new sewer separators, and construction of new conveyance and storage tunnels.

The Lemay Redundant Force Main (RFM) is the initial phase of the overall combined sewer overflow (CSO) remediation. The Lemay RFM project is a second force main from the Lemay Pump Station #1 to the Lemay Waste Water Treatment Plant (WWTP) and will provide additional conveyance capacity. The RFM alignment roughly parallels the existing force main and is located slightly deeper in profile. The RFM is planned as a nominal 10‐foot diameter tunnel, 3,262 feet long through bedrock. Geotechnology is providing geotechnical, field and laboratory testing, and geophysical surveys for the RFM, and prepared a geotechnical data report that provided critical information for the geotechnical aspects of design and construction of the RFM.

The Jefferson Barracks (JB) Tunnel will be approximately 3.5 miles long, approximately 10-foot excavated diameter tunnel in rock.  The tunnel will be used to convey and store sanitary sewage and storm water pending its treatment at the Lemay WWTP near the confluence of the River Des Peres and Mississippi River in St. Louis, Missouri.  The JB Tunnel alignment generally parallels the Mississippi River from Koch Road just south of I-255 and terminates at the Lemay WWTP.  The JB Tunnel alignment generally traverses through the grounds of St. Louis Veterans Administration Medical Center, Jefferson Barracks National Cemetery, a county park, a high school, and a number of private properties.  The current alignment crosses I-255 near the south end of the alignment.  Based on preliminary data the invert of the JB Tunnel is planned to slope 18 feet from the south to the north.  A pump station will be constructed at the downstream (north) end to lift the combined sewage into the Lemay WWTP.

The River Des Peres (RDP) Tunnel, some 8.7 miles long, approximately 30-foot excavated diameter tunnel in rock, and running essentially below the existing River Des Peres channel at a depth of 220 feet is the largest element of the project.  The RDP Tunnel will be used to store and convey sanitary sewage and storm water pending its treatment at the Lemay WWTP near the confluence of the River Des Peres and Mississippi River in St. Louis, Missouri. The considered alignment crosses under railroad tracks at two locations, a rail switching yard, Interstate Highways I-44 and I-55, and the River Des Peres channel at several locations. Based on preliminary data the invert of the RDP Tunnel is planned to slope about 45 feet from the north to the south end.  A pump station will be constructed at the downstream (south) end to lift the combined sewage into the Lemay WWTP.

Saint Louis Zoo

December 20th, 2012

Location: St. Louis, Missouri
Client: Numerous
Owner: Saint Louis Zoological Park Commission & Saint Louis Zoo Association
Services: Geotechnical, Construction Observation & Materials Testing, Water Resource Management

Inspired by the 1904 World’s Fair Flight Cage, the City of St. Louis’ civic leaders established the Zoological Society of St. Louis in 1910 and in 1913 obtained authority over 70 acres in Forest Park where it currently resides. The St. Louis Zoo is one of the few free zoos in the nation and is currently home to more than 19,000 wild animals.

The zoo plays host to a number of educational programs, special public events and is available to rent for private functions throughout the year.

Geotechnical, construction materials testing (CMT), environmental, water resource management, non-destructive testing (NDT) and drilling services have been provided for zoo projects since 1998. Some of these projects include:

Coffeen & Sioux Coal-Fired Power Plants

October 31st, 2012

Location: Illinois & Missouri
Services: materials testing
, subsurface utility engineering (SUE)

AmerenUE is constructing wet flue gas desulfurization retrofits on two of their coal-fired power plants, and we provided certified welding inspection services at the fabrication shops and job sites.

Coal-fired power plants utilize limestone material-handling systems with new effluent stacks. We provided services to verify weld quality of carbon steel ductwork and absorbers tanks including:

  • Shearweave ultrasonics
  • Radiography
  • Magnetic particle non-destructive testing
  • Writing weld procedures
  • Tracking welder certifications
  • Updating isometric piping drawings
  • Oversight of slip form construction of 450-foot emission chimneys
  • Temperature monitoring for mat foundation concrete & verification of reinforcing steel
  • SUE Quality Levels D, C, B and A

Electromagnetic terrain conductivity surveying was also used to locate previously unknown buried utilities. Suspected utilities, including a large electrical duct bank, were located using ground-penetrating radar (GPR), radio detection and magnetic methods. The locations and depths were verified by performing vacuum excavation. Additionally, our team members observed the installation and conducted Pile Integrity Testing (PIT) on approximately 600 augercast piles to support the fan, duct support and utility-rack foundations at the Coffeen & Sioux Coal-Fired Power Plant.