Eastern Regional Wastewater Treatment Plant

October 1st, 2015

Location: Campbell County, Kentucky 
Owner: Sanitation District No. 1
Client: GRW Engineers, Inc.
Services: Geotechnical

Overview
THELEN provided the Geotechnical Services for the plant that will be the culmination of the new Eastern Regional collection system. The plant includes a preliminary treatment building, an equalization basin, two oxidation ditches, two clarifiers, ultraviolet disinfection, a sludge holding building and a sludge processing building. The plant will be expanded to twice its size. THELEN’s services during construction included testing of soils and concrete.

 

Work completed by Thelen Associates, Inc.

 

 

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CSO 483 Drainage Basin

October 1st, 2015

Location: Clermont County, Ohio
Owner: Clermont County Water Resources Dept.
Services: Geotechnical

Overview
The CSO 483 drainage basin follows Kings Run Stream, which has been developed over the years, resulting in sections of the stream being culverted and upon which fill has been placed. The improvements within this basin will include new sewer alignments, an underground CSO surge tank, and several detention basins. Portions of the new sewer alignments will require open cut and shored excavations along with trenchless installation methods beneath an existing 14-foot by 8-foot combined trunk sewer. Installation of tied-back retaining walls will be required along portions of the sewer alignments to protect the proposed sewer during and after construction from potential slope instability. Thelen Associates, Inc. performed a geotechnical exploration for this project, which involved borings, laboratory testing, and slope stability analyses. This project is currently proceeding through the design phase.

 

Work performed by Thelen Associates, Inc.

Western Regional Sanitary Sewer Conveyance Tunnel

October 1st, 2015

Location: Boone County, Kentucky
Client: HDR/Quest Engineers, Inc.
Services: Geotechnical

Overview:
Thelen is the geotechnical member of the design team for the Western Regional Conveyance Project in Boone County, Kentucky.  The project includes 32,574 feet of 9.5-foot diameter tunnel ranging from 35 to 300 feet below the ground surface; 702 feet of aerial, bridge-supported sewer as high as 43 feet above the ground surface, and 2,918 feet of 8.5-foot diameter open-cut sewer as much as 30 feet below the ground surface.  Thelen’s project engineering responsibilities have included the following: attending public meetings; logging the rock core and documenting geologic discontinuities such as faults, joints, and deep sand seams; determining the Rock Mass Rating (RMR) for the geologic formations of interest; managing an extensive in-house and out-sourced laboratory test program; evaluation of regional seismicity, site class, seismic design category, liquefaction potential, and seismic densification potential; design of a wick drain system to accelerate embankment settlements; design of deep foundations for the bridge structure; estimating long-term, open-cut sewer pipe settlements; geologic field mapping; an extensive geophysics program to define the bedrock/overburden contact in key areas of the driven tunnel alignment; interpretation of complex geologic overburden profiles in glaciated deep valleys; construction of geologic cross sections; foundation design for ancillary structures; production of the Geotechnical Data Report (GDR); assistance to the tunnel/bridge designer in assembling the Geotechnical Baseline Report (GBR); working with the Tunnel Review Board (TRB); and review of the plans and specifications. Our services commenced in February 2006 and were completed in November 2007.

 

Work performed by Thelen Associates, Inc.

 

 

THE_Western_Regional_Sanitary_Sewer

Portsmouth New Boston Flood Protection System

October 1st, 2015

Owner: City of Portsmouth
Client: Howerton Engineering & Surveying
Services: Geotechnical 

Overview:
The project involved a geotechnical exploration along the entire 41,713 foot long flood protection system, which consists of a combination of cantilevered reinforced concrete floodwalls and earthen levees. The geotechnical study, involving eighty-eight (88) test borings, was performed as required by FEMA to determine if the flood protection system was providing appropriate protection from the base flood on National Flood Insurance Program Maps. The evaluations of the subject system with respect to uncontrolled seepage, slope stability and the seismic stability were presented in accordance with FEMA and USACE protocol.

 

Work performed by Thelen Associates, Inc. 

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Northern Kentucky University Campus Projects

October 1st, 2015

Location: Highland Heights, Kentucky
Client/Owner: Northern Kentucky University
Services: Geotechnical

Overview:
Thelen Associates, Inc. has performed Geotechnical Explorations and Construction Review Services for numerous campus facilities since 1971.

The following is a partial list of these facilities:

  • Academic Health & Physical Education
  • Dormitories
  • Landrum Hall Building
  • Applied Science & Tech Center
  • Steely Library
  • Residential Village
  • Ceramics/Sculpture Building
  • Student Baptist Center
  • Parking Garages #1, #2 and #3
  • Baseball Field
  • Natural Science Building
  • Power Plant
  • Greenhouse
  • Albriet Health Center
  • Student Union
  • Bank of Kentucky Arena
  • Informatics Building
  • Soccer Complex
  • Lake and Bridge Improvements
  • Amphitheater
  • Tennis Court Relocation
  • Fine Arts Center

 

Work performed by Thelen Associates, Inc.

 

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The Bank of Kentucky Center

October 1st, 2015

Location: Highland Heights, Kentucky
Owner: Northern Kentucky University
Client: GBBN Architects, Inc.
Services: Geotechnical, Construction Materials Testing

Overview:
The Bank of Kentucky Center is a 10,000 seat multi-purpose venue located on the Highland Heights Main Campus of Northern Kentucky University. THELEN performed the geotechnical exploration and geotechnical design for the project as well as the review of the foundation installation, and soils and concrete testing and Special Inspections. The project was completed in 2008 and had a construction cost of $64 million.

 

Work performed by Thelen Associates, Inc. 

 

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Lick Run Wet Weather Strategy Project

October 1st, 2015

Location: Cincinnati, Ohio
Owner: Metropolitan Sewer District of Greater Cincinnati
Client: Strands Associates, Inc.
Services: Geotechnical 

Overview
The Lick Run drainage basin is a 4.26 square mile basin with combines storm and sanitary sewers that drain into a 19.5 foot diameter combined sewer which drains into Mill Creek. The Lick Run Wet Weather Strategy Project is intended to separate the storm and sanitary sewers throughout the basin, including the separation of the storm water from the 19.5 foot diameter trunk sewer into an urban green open channel. The project will include open cut and trenchless small and large diameter sewer pipe installation, urban open channel construction including retaining walls and park redevelopment and street bridges over the open channel. The project is currently proceeding through the design stages. THELEN is performing the geotechnical services for the project including test borings and analysis.

 

Work performed by Thelen Associates, Inc.

 

 

 

 

Kentucky Speedway

August 14th, 2015

Location: Sparta, Kentucky
Client: Kentucky Speedway, LLC
Services: Geotechnical, Materials Testing

Overview
Thelen Associates, Inc. has been providing engineering and testing services for the Kentucky Speedway since 1997. Most recently, the team performed a 2008 Geotechnical Exploration for the grandstand additions. Two (2) new seating structures were proposed to complete the 69,000 seating grandstands.

 

Work performed by Thelen Associates, Inc.

 

 

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US 69 Bridge Over the Missouri River

April 24th, 2015

Location: Kansas City, Missouri and Kansas
Client: Burns & McDonnell
Owner: Missouri Department of Transportation
Services: Geotechnical, Drilling

Geotechnology provided geotechnical consulting and environmental drilling services for the procurement phase of the design-build project. Geotechnology’s scope of services included performing a subsurface exploration, laboratory testing, and preparation of a geotechnical data report characterizing the site for use by the designbuild teams.

Geotechnology conducted site reconnaissance; obtained site access for the drill rigs and barge; coordinated and conducted geotechnical drilling and sampling for five land borings and two river borings, and conducted environmental drilling and sampling for nine land borings.

Highway 47 Bridge Over the Missouri River

April 24th, 2015

Location: Washington, Missouri
Client: HDR Engineering, Inc.
Owner: Missouri Department of Transportation
Services: Drilling, Geotechnical

Geotechnology provided geotechnical services for the design of a new bridge immediately upstream of the existing bridge in accordance with the “Adjacent Upstream Alternative” from the Environmental Assessment. The bridge was designed using LRFD methodology. The geotechnical scope of services assumed a 9-span bridge located parallel and to the west of the existing bridge. It also assumed a mechanically stabilized earth wall would be necessary at the south end bent, and a planned approach embankment north of Bent 1 that is anticipated to be approximately 20-25 feet high and extend 500-600 feet in length. Drilling included land and river borings for the proposed bridge, mse wall, the north approach embankment, and the approach pavement on both sides of the river.

The Route 47 Missouri Bridge needs to be replaced because of its deteriorating condition as it is a vital link for the community. About 11,000 vehicles travel over the bridge each day. A new bridge will improve safety, improve reliability and contribute to the continued growth in the area.

The proposed new bridge would provide safer and more efficient travel for many motorists traveling between Franklin and Warren Counties.