Welcome to CSCE Edmonton
We have had to adjust our Dinner Presentation Schedule please see below for the new schedule.
Date: January 17, 2019
Title: Hay River - Pine Point Bridge Rehabilitation
Presenter: Mark Scanlon, P.Eng. - Stantec
Date: February 21, 2019
Title: Tundra Mine Remediation
Presenter: John MacKenzie, P.Eng. - AECOM
Date: March 21, 2019
Title: Pipeline Bending From Geotechnical Movements
Presenter: Millan Sen, Ph.D., P.Eng. & Nader Yoosef-Ghodsi, Ph.D. P.Eng. - Enbridge
Tundra Mine, located approximately 240 kilometres northeast of Yellowknife, NWT was an underground gold mine, in operation between the years 1964 and 1968, and supported operations at the nearby Salmita Mine from 1983 to 1987. Indigenous and Northern Affairs Canada (INAC) assumed responsibility for the site in 1998 after the mine operator was placed in receivership and abandoned the site.
Mine operations had left the Tundra site with environmental and physical hazards. Upon assuming control, INAC undertook care and maintenance of the site, and completed a site wide assessment to identify the extent of environmental and physical risks. An overall remedial action plan (RAP) was developed based on studies and stakeholder consultation, and the site remediation was broken out into two phases. Phase I remediation was carried out in 2007, and primary activities included demolition and on-site disposal of mill facilities, sealing of underground works, the removal and off-site disposal of hazardous materials, and the closure and capping of the former dump site.
The following environmental issues of concern were identified in the RAP to be addressed at part of the Phase II work:
- Potentially acid generating (PAG) waste rock
- Arsenic rich tailings
- Arsenic impacted water in the Tailings Containment Area (TCA)
- Petroleum Hydrocarbon contaminated (PHC) soils.
The Phase II remediation work activities were completed between 2010 and 2017 and generally included the following:
- Water treatment of over one million cubic metres of arsenic impacted water
- On-Site PHC contaminated soil treatment
- Removal and relocation of over 200,000 cubic meters of tailings into the TCA
- Disposal of PAG rock and treated PHC soils into the TCA
- TCA construction and grading, bituminous geomembrane (BGM) liner system installation and cover material placement covering more than 26 hectares
- Excavation and grading of a diversion ditch around the TCA, including BGM liner installation, and placement of drainage rock
- Construction of a channel between Mill Pond and Upper Pond
- Upper Pond stabilization and armouring with granular aggregate material
- Borrowing of granular aggregate material from various sources
- Borrowing of cover soils and stabilization of the West Lower Pond Borrow Area (WLPBA)
- Regrading and armouring of Lower Pond
- General site cleanup, minor demolition, grading, and maintenance
The objective of the presentation is to provide a summary of the project remediation works and highlight the engineering challenges experienced with the Tundra Mine site remediation, specifically during the 2017 construction season, including: borrow source identification, designing to bedrock depths and permafrost protection; construction over the TCA; and managing sedimentation and erosion potential in the design.
John MacKenzie P.Eng., Project Manager, Stantec
John MacKenzie is an Environmental Engineer with over 7 years of experience including Northern and arctic remediation, waste management and construction management. John’s responsibilities include completing remedial designs and specifications, environmental inspections, resident engineering and contract management. He has been involved with the Tundra Mine remediation site for 3 years and has completed work for other Northern projects including the Giant Mine Roaster Complex Demolition project and Colomac Mine monitoring.
A PDF of the presentation abstract is available here.
Freddy Pina, Ph.D., P.Eng.
This course covers detailed information from the conception to the final design of a Reinforced Concrete Shear Wall building using a performance-based seismic design (PBSD) approach. It will include hands-on experience in the application of PBSD on several building projects on the West Coast of USA. This course will go over the concept of PBSD, its development and key aspects of the general approach. It will continue with an overview of the latest PBSD guidelines currently used and a brief review of current code requirements and how they differ from the PBSD approach.
PBSD is based on a series of performance checks. The first performance check is at the building service level under both earthquake and wind loads. This performance measure is easy to implement as it is similar to a code-based modeling approach with some important modifications to modeling and acceptance criteria. The second performance level is to reduce the chances of collapse of a building under a major earthquake. This major event is defined in the ASCE 7-10 as the Maximum Credible Earthquake or MCEr. This second performance is well understood in the research environment but still proves a challenge for the engineering practice.
This course will go over key modeling steps of both linear and nonlinear components, processing the input and output information, design aspects that could potentially be improved during the analysis, and detailing aspects that differ from a code-based seismic design.
Location:Engineering Teaching and Learning ComplexSolarium is ETLC E2-100 Solarium East,
University of Alberta
9107-116 St, Edmonton
AB T6G 2V4
The Canadian Society for Civil Engineering is delighted to invite you to the CSCE 2019 Annual Conference in Laval (Greater Montreal), QC June 12-15, 2019. The theme is Growing with Youth. From this perspective, we promise you an opportunity to expand your technical knowledge, to network with professional colleagues, and to enjoy social events with friends and family.
The specialty conference of the CSCE 2019 Annual Conference will be:
- CSCE General Conference
- 7th International Construction Specialty Conference
- 17th International Environmental Specialty Conference
- 24th Canadian Hydrotechnical Conference
- 7th International Engineering Mechanics and Materials Specialty Conference
For more information please visit the conference website: www.csce2019.ca
If you are interested in finding out what CSCE Young Professional events are coming up click Here.