MSD – Gingras Creek Combined Sewer Overflow (CSO) Removal

June 6th, 2014

Location: St. Louis, Missouri
Client/Owner: MSD
Services: Geotechnical, Drilling, Soils & Materials Testing

Overview:
Under contract with MSD in FY 2012 to provide General Engineering Services (Geotechnical), Geotechnology, Inc. performed drilling, laboratory testing and engineering services and submitted geotechnical data and interpretive reports to the MSD Engineering staff preparing the preliminary design of approximately 7,340 linear feet of sanitary sewer pipe in tunnel with four drop shafts and appurtenances. The purpose of this tunnel is to eliminate the combined sewer overflow (CSO) that discharges into Gingras Creek. The tunnel alignment extends generally from the Hillcrest Apartments south of Interstate I-70, northward under I-70, the Lutheran North High School Athletic fields, the Lucas & Hunt Village Apartments, the Lucas & Hunt Road Right of Way, the Memorial Park Cemetery, The Village of Country Club Hills (Municipal Park), and the McLaran Avenue right-of-way in north St. Louis County, Missouri. The tunnel flowline will be approximately 24 to 116 feet below the existing ground surface. It is anticipated that the tunnel will be excavated using a Tunnel Boring Machine (TBM).

Details:
TBM launching and termination shafts are planned at both ends of the tunnel. In addition, two drop shafts are planned one near the Lucas & Hunt Village Apartments and one near the intersection of McLaren and Esterbrook Drive along the proposed tunnel alignment.

The field exploration consisted of drilling seven borings along the tunnel alignment to auger refusal, performing Standard Penetration Tests (SPT’s), obtaining split spoon and Shelby tube samples of soil overburden and coring rock using double tube NX wireline methods. Temporary monitoring wells were installed in to obtain groundwater level measurements at intervals following completion of drilling. Packer tests were performed select borings to measure the hydraulic conductivity of rock.

Laboratory tests included visual classification of soil sample (ASTM D 2488), natural moisture content (ASTM D 2216), unit weight of relatively undisturbed soil samples, liquid and plastic limits (ASTM D 4318), unconfined compression tests (ASTM D 2166), consolidated-undrained triaxial tests (ASTM D 4767), uniaxial compressive strength of rock (ASTM D 2938), and liquid and plastic limits of shale (USACOE EM 1110-2-1906).

Cargill East Expansion

March 4th, 2014

Owner: Cargill, Inc.
Client: ADF Engineering
Location: Memphis, Tennessee
Services: Geotechnical, Drilling, Subsurface Utility Engineering, Soils & Materials Testing

Overview:
Geotechnology provided geotechnical subsurface exploration and subsurface utility locating services to Quality Level B, helping identify potential utilities in the area of proposed grounding rod installations. The project included the construction of approximately 22,150 feet of one to two railroad tracks north of Harbor Avenue on President’s Island Industrial Park.

Field exploration consisted of drilling 48 borings of depths ranging from 15-60 feet using all-terrain rotary drill rigs. Standard Penetration Tests (SPT’s) were performed using automatic hammers. Blow counts, or ‘N’-values, were recorded and are presented on the boring logs. Split-spoon and relatively undisturbed samples were obtained in general conformance with applicable ASTM standards at the depths indicated on the boring logs.

Geotechnology also performed multiple laboratory tests on select soil samples. Testing included: moisture content determinations, Atterberg limits, grain size analysis, unconfined compression strength testing, unconsolidated-undrained triaxial compression (UU) testing, consolidated-undrained triaxial compression (CU), direct shear, one-dimensional consolidation, and relative density.

StructureScan was performed using Ground Penetrating Radar (GPR) using Geonics EM31 and EM61 and 3D GPR data. The surveys were conducted to determine the reinforcing steel layout in a holding tank foundation and tilt up wall.

All of the tests performed were used by Geotechnology in providing engineering analysis and consulting services to the client. Detailed recommendations were provided as a result of Geotechnology’s interpretation of exploration data and past experience.

Illinois Department of Transportation (IDOT)

June 18th, 2013

Owner: Illinois Department of Transportation (IDOT)
Client: Various
Location: Various locations throughout Southwestern Illinois
Services: Geotechnical, Geophysics, Drilling, Environmental, Construction Materials Testing, Soils & Materials Testing

Overview:
Geotechnology, Inc. has provided geotechnical engineering, drilling, geophysics, construction observation and materials testing, and environmental engineering services on a significant number of road and bridge projects. Services have included:

  • Drilling, sampling, laboratory testing, and engineering analyses to develop foundation and site design parameters for proposed roadway alignments, new and existing bridge structures, renovation and repair of existing pavements, new asphalt and concrete pavements, and seismic retrofit evaluations of existing bridge structures.
  • Subsurface Utility Engineering Quality Levels D, C, B and A including record searches, site reconnaissance, geophysical surveys, and vacuum excavation (a drilling technique using high pressure air and vacuum to remove soil without harming subsurface structures), all combined with land surveying, and GIS to produce a final map depicting locations of identified utilities.
  • Geophysical surveys and analyses related to proposed roadway alignment geology, structural condition of existing bridge support systems, bridge subsidence investigations and analyses, and investigation of pavement subgrade systems.
  • Materials testing services for new and existing asphalt and concrete pavement, including concrete and asphaltic concrete mix design; Superpave mix design, verification of aggregate quality and compaction testing; slump and air content testing; compressive strength testing of samples; flexural strength testing of beams and structural components; testing of welded and bolted connections; foundation construction observation and testing, including Pile Dynamic Analyses™ (PDA) testing of steel H-piles, Pile Integrity testing of cast-in-place augercast piles, static load tests to determine actual load stresses and/or coordinate PDA test results; cross-hole sonic logging, TV camera inspections, and contract drilling of drilled shafts; and developing temperature models to predict temperature variations on main bridge cast-in-place elements in order to control cracking.
  • Environmental assessments, asbestos surveys, and underground storage tank management related to proposed roadway alignments.

Geotechnology, Inc. has provided these and related services for numerous municipalities, cities and counties, as well as for State agencies and the Federal Highway Administration interstate highway system. This includes projects in the Illinois counties of St. Clair and Madison in the Metro East St. Louis area.

Details:
A sampling of projects performed for IDOT include:

TDOT State Route 218 Extension

June 10th, 2013

Owner: Tennessee Department of Transportation (TDOT)
Client: Parsons Corporation
Location: Henry County, Tenneessee
Services: Drilling, Soils & Materials Testing

Overview:
Geotechnology is contracted with the Tennessee Department of Transportation to provide subsurface exploration for the 2.6 mile extension between SR 69 to SR 54 which will bypass Paris, Tennessee. The roadway section will consist of two traffic lanes within a 150 feet Right Of Way and a new bridge over the West Tennessee-Kentucky Railroad for which site specific seismic analysis is also being performed. To date Geotechnology has drilled approximately 4,400 feet using both hollow stem augers and mud rotary drilling methods. Sampling was performed using SPT and Shelby tube sampling methods. Laboratory testing is being performed by Geotechnology. The project is on budget and services are anticipated to be completed well within the allotted time frame.

Missouri Department of Transportation (MoDOT)

December 27th, 2012

Owner: Missouri Department of Transportation (MoDOT)
Client: Various
Location: Various locations throughout Missouri and Illinois
Services: Geophysics, Drilling, Geotechnical, Environmental, Construction Materials Testing, Soils & Materials Testing

Overview:
Geotechnology, Inc. has provided geotechnical engineering, drilling, geophysics, construction observation and materials testing (CMT), and environmental engineering services on a significant number of road and bridge projects. Services have included:

  • Drilling, sampling, laboratory testing, and engineering analyses to develop foundation and site design parameters for proposed roadway alignments, new and existing bridge structures, 2012 – 2013 Website Updates Page 2 of 11 renovation and repair of existing pavements, new asphalt and concrete pavements, and seismic retrofit evaluations of existing bridge structures.
  • Subsurface Utility Engineering Quality Levels D, C, B and A including record searches, site reconnaissance, geophysical surveys, and vacuum excavation a drilling technique using high pressure air and vacuum to remove soil without harming subsurface structures, all combined with land surveying, and GIS to produce a final map depicting locations of identified utilities.
  • Geophysical surveys and analyses related to proposed roadway alignment geology, structural condition of existing bridge support systems, bridge subsidence investigations and analyses, and investigation of pavement subgrade systems.
  • Materials testing services for new and existing asphalt and concrete pavement, including concrete and asphaltic concrete mix design; Superpave mix design, verification of aggregate quality and compaction testing; slump and air content testing; compressive strength testing of samples; flexural strength testing of beams and structural components; testing of welded and bolted connections; foundation construction observation and testing, including Pile Dynamic Analyses™ PDA testing of steel H-piles, Pile Integrity testing of cast-in-place augercast piles, static load tests to determine actual load stresses and/or coordinate PDA test results; cross-hole sonic logging, TV camera inspections, and contract drilling of drilled shafts; and developing temperature models to predict temperature variations on main bridge cast-in-place elements in order to control cracking.
  • Environmental assessments, asbestos surveys, and underground storage tank management related to proposed roadway alignments.

Geotechnology, Inc. has provided these and related services for numerous municipalities, cities and counties, as well as for State agencies and the Federal Highway Administration interstate highway system.

Details:
A sampling of projects performed for MoDOT include:

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

Overview:
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.

Details:
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:

St. Louis Zoo’ Sea Lion Sound

December 20th, 2012

Location: St. Louis, Missouri
Client: Alberici Constructors
Owner: Saint Louis Zoological Park Commission & Saint Louis Zoo Association
Services: Geotechnical, Construction Observation, Materials Testing, Special Inspections

Overview:
Geotechnology provided subsurface exploration and recommendations for the design and construction of the geotechnical features for the new Sea Lion Sound.  This newest addition to the St. Louis Zoo includes an exhibit pool, terraced seating and an outdoor theatre, life support tanks and a docent building. Subsurface exploration services included drilling, on-site logging by a staff geologist or engineer soil sampling, laboratory testing and geotechnical evaluation. During construction we provided engineering consultation, Special Inspections, observation, and materials testing services.

Details:

  • Observations during stone column installation
  • Earthwork observations and compaction testing
  • Footing excavation observations
  • Reinforcing steel inspections
  • Masonry (CMU) wall inspections and testing
  • Concrete testing
  • Observing proof rolling for floor slab and pavement areas
  • Observations of welded and bolted connections of structural steel

This is one of many projects Geotechnology has had the privilege of working on at the Zoo.

Charter Communications

October 31st, 2012

Location: Nationwide
Client: Numerous
Owner: Charter Communications
Services: Environmental, Geotechnical, Drilling, Soils & Materials Testing

Overview:
As a part of Charter Communications, Inc. commitment to expansion and improvement of its nationwide network of communication services Geotechnology provided all pre-construction environmental/geotechnical services for the design and construction of new cable headend facilities, primary and secondary hubs, and communications towers. The multi-year plan included numerous projects on more than 400 sites in over 25 states.

Detail:
Geotechnology managed these services by utilizing our professional staff and in-house fleet of drilling equipment and in geographical areas where it was more cost-effective, some of the field work was subcontracted to a network of firms that are members of the Association of Firms Practicing in the Geosciences, formerly the American Society of Foundation Engineers (ASFE).

Specific tasks included:

  • Performing Phase I and Phase II environmental site assessments.
  • Performing geotechnical drilling, laboratory testing and engineering analyses.
  • Performing asbestos sampling and reporting services.
  • Performing remedial soil excavation and Underground Storage Tank (UST) closure services
  • Managing and coordinating subcontracted environmental and geotechnical services
  • Providing consulting services for risk management on environmental issues.