News Archive


LDML Office Building

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Background

The LDML (Lac Des Mille Lacs First Nation)Office Building is located on the corner of Little Lake Road and Anemki Drive on the FWFN (Fort William Fist Nation) Reserve.  TBT Engineering has been retained by A49 Architects to help design this new building.

TBT Engineering’s Role

Tasks included a geotechnical investigation, laboratory materials testing, field services, mechanical, electrical and structural design.

Geotechnical Investigation

Tasks included geophysical investigations, geotechnical sampling. Geotechnical engineering recommendations were then developed and included topics such as ultimate bearing pressures, depth to founding strata, anticipated constructability issues, soil backfill requirements, potential for reuse of excavated soils, and preload design parameters.

Geotechnical Drilling

All necessary drilling was completed using our in-house drilling department.  Hollow stem augers facilitated soil sampling and down hole testing.  Diamond core drilling was used to sample bedrock.

Materials Testing – Laboratory

An extensive laboratory testing program was undertaken and included testing for moisture content, grain size analyses, and plasticity.  Other tests such as compression or point load testing where used.

Field Services

TBT Engineering performed hundreds of field compaction tests and also completed all concrete quality testing.  Subgrade inspections were completed to verify the suitability of materials for foundation bearing.


Fort Frances School

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Background

The Fort Frances School

TBT Engineering’s Role

Tasks included preliminary geotechnical investigations, pre load inspections, laboratory materials testing, field services, mechanical, electrical design and an extensive geotechnical drilling program.

Geotechnical Investigation

Tasks included geophysical investigations, geotechnical sampling. Geotechnical engineering recommendations were then developed and included topics such as ultimate bearing pressures, depth to founding strata, anticipated constructability issues, soil backfill requirements, potential for reuse of excavated soils, and preload design parameters.

Geotechnical Drilling

All necessary drilling was completed using our in-house drilling department.  Hollow stem augers facilitated soil sampling and down hole testing.  Diamond core drilling was used to sample bedrock.

Intervisable Control Establishment Surveys

Control Surveys were completed for proposed new school.  Trimble Series 3 R8 RTK Survey Grade GPS Systems were used, control points were established and related information, along with detailed site plans, were provided.

Materials Testing – Laboratory

An extensive laboratory testing program was undertaken and included testing for moisture content, grain size analyses, and plasticity.  Other tests such as compression or point load testing where used for concrete and bedrock.

Field Services

TBT Engineering performed hundreds of field compaction tests and also completed all concrete quality testing.  Subgrade inspections were completed to verify the suitability of materials for foundation bearing.


MTO Contract Admin

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MTO Contract 2014-6026

Highway 11/17 Four Laning, 4.8km west of Highway 628 Easterly 11.8km (Red Rock to Nipigon).

This project consists of a divided four-lane facility from Red Rock Road No. 9 to east of Stillwater Creek as well as new structures at Itzcauldé Creek, South Trout Creek, North Trout Creek and Stillwater Creek

MTO Contract 2014-6018

Four-Laning Pass Lake, From 5.0 km west of Highway 587 easterly 6.6 km.

This project was a Design-Build Major contract for a 6.6 km section of Highway 11/17 constructed into a new four-lane divided highway with associated side road connections


Agimak River Culvert – Replacement And Stream Rehabilitation

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Background

The 2018 Agimak River Culvert Replacement and Stream Rehabilitation on Highway 599, north of Ignace, ON, involved the removal of an aging creosote timber box culvert and replacing it with an open bottom sheet pile structure. This culvert replacement was required to improve highway safety, hydraulic capacity, and enhance existing fish spawning habitat for walleye and white sucker.

TBT Engineering’s Role

TBTE was retained by LH North Ltd. (LHN) to provide Fisheries Contract Specialist (FCS) Services during construction activities. FCS services during construction included:

  • Provide environmental input into dewatering and isolation plans, including Erosion and Sediment Control (ESC) planning;
  • Provide fish rescue services prior to removal of the old culvert;
  • Monitoring of erosion and sediment controls (ESC) during construction;
  • Assist with implementation of the new natural stream channel, which included a cobble substrate with a low-flow channel and large boulders to provide resting spots for fish.
  • Provide overall environmental monitoring to ensure serious harm to fish and fish habitat did not occur.

Result

The Agimak River culvert was replaced with minimal disturbance to the aquatic environment. The combined efforts of TBTE’s FCS and the LH North construction crew resulted in a new watercrossing that is stable with a stream channel that provides enhanced spawning habitat and improved fish passage which should result in a significant benefit to the fishery.

After

Municipal Transit Site – Soil and Groundwater Quality Investigations

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Background

A municipal transit fuel storage system and parking lot had reached the end of its serviceable life, and as such, the fuel storage system required replacing and the parking lot required rehabilitation. Underground fuel storage tanks were replaced with above-ground tanks. In order to investigate any environmental concerns for reporting purposes, this required sampling of soils and monitoring of groundwater quality conditions, prior to and during site upgrades.

TBT Engineering’s Role

TBTE was retained by the client to conduct environmental subsurface investigations to establish baseline soil and groundwater quality conditions in the proposed area of the future aboveground fuel storage tank (AST) system; and, to determine if there were any potential issues of petroleum hydrocarbon contamination, related to fuel handling activities migrating towards adjacent properties.

The main aspects of TBTE’s field work program consisted of the following:

  • Arranging the location of all subsurface utilities;
  • Review of historic reports for evaluation and planning purposes;
  • Drilling boreholes to depths below water table and installing groundwater monitoring wells (GMW) for water quality testing;
  • Soil sampling for tank nest excavation;
  • Monitoring of volatile vapours on all soil samples collected;
  • Testing soil samples and groundwater sample for analysis of BTEX and Petroleum Hydrocarbon Fractions;
  • Decommissioning of damaged pre-existing GMWs and registration of newly installed GMW;
  • Analytical reporting on soil and groundwater results to applicable provincial standards;
  • Worked in conjunction with environmental contractor for completion of the work.

Result

Advice was provided to the client at various stages throughout the project on logical steps forward and relevance of such future work.

Through these environmental subsurface investigations, the municipality was able to determine potential groundwater and soil contamination surrounding the pre-existing transit fuel storage system as well as for the location of the new fuel storage system. These results were reported to the relevant regulatory agency by TBTE.


Baseline Study

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Background

In 2018, a greenfields area, located in the district of Thunder Bay, became the subject of future development plans by a local mining company.  TBTE was retained as a consultant to conduct Baseline Environmental Monitoring that included archaeological, biological and physical assessments at key locations in the area.

TBT Engineering’s Role

As part of the baseline environmental monitoring, TBTE biologists were retained to conduct the following assessments:

  • Discharge and water quality monitoring;
  • Fish and Fish Habitat investigations, including fish capture and live-release;
  • Multi-season monitoring of waterfowl populations;
  • Species-at-Risk habitat surveys; and,
  • Wetland and forest ecosite vegetation ground-truthing and mapping.

The field season included several weeks of fieldwork during various seasons.  Fisheries assessments required the use of gillnets (short-term, live-release sets), minnow trapping, visual observations, and backpack electrofishing (TBTE-owned unit).  Water-quality sampling was completed using an extendable-pole sampler and sample results were evaluated against the Provincial WQ Guidelines (PWQG).  Manual flows were measured using a portable Flow Meter, following standard methods to calculate discharge values.

Baseline Environmental Investigations are ongoing.


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