North Minster Dam Geotechnical Health Assessment Services

The vendor is required to provide the geotechnical health assessment is to complete the initial stage of evaluating the dam’s performance, which includes a site assessment, installing geotechnical instrumentation, soil sampling, and laboratory testing at north minster dam.
1. Phase 1
- Monthly progress reports
• Work completed (tasks) to date; 
• Earned value report that includes the percentage of work complete for each task versus the percentage of budget spent; 
• Upcoming proposed and planned work and methodology for the next reporting period; 
• Budget status; 
• Schedule status (ahead or delayed, projected number of days required); and, 
• Summary of any scope or contract changes.
- Site inspection
• Consultant and agency will visually inspect all geotechnical aspects of the dam, embankment crest, abutments, upstream and downstream slope, toe area, irrigation control structure, emergency earth spillway, drains, conduits, slope protection systems, slopes of outlet channels etc., as available.
• Inspection must consider site access for drill rig and equipment, potential material sources for construction of drill pads (if required), general site conditions, public impacts on field program, and safety considerations (including traffic accommodations, if required). 
• Consultant will arrange their own transportation and will engage key project team members in the site inspection. 
• The inspection team will
o Identify locations of boreholes; and 
o Identify the critical cross-sections to be included in the analysis and future technical monitoring from their visual observation and assessment.
• Consultant will coordinate the site visit with the drilling subcontractor, such that the drilling subcontractor has the opportunity to visit the site and contribute to the successful planning and execution of the field investigation.
• Consultant will mark the borehole locations for the field investigation.
• The necessity for drill pads should be considered based on the selection of borehole locations.
- Survey and bathymetry
• Consultant will complete the required survey (e.g., topographic and bathymetric survey) of the embankment and surrounding area to obtain the geometry of the cross-sections for the phase 2 report. 
• Consultant will re-establish the stationing along the dam’s alignment in metric units, if available in the record drawings.
2. Phase 2
- Field investigation
• Consultant is responsible for the field investigation and will obtain necessary permits.
• Consultant will engage an earthworks contractor to undertake the construction of any pads required to access instrumentation install locations.
• Consultant will engage a drilling contractor to undertake the field investigation to meet the schedule.
• Consultant will also ensure both the field program lead and the selected drilling contractor are experienced in completing common drilling methods undertaken at existing dams or earth-fill embankments in the prairie geological region.
• Typical earth-fill embankments or dams in the specified region are often founded on alluvial deposits or glaciofluvial deposits overlying clay shale or sandstone or glacial till, or a combination of any of the above.
• Common drilling methods undertaken at this region include but are not limited to solid stem auger, hollow stem auger, sonic, and mud rotary drilling.
• Consultant will conduct the field investigation and instrument installation, collect samples to fulfill laboratory testing plan, and ensure a high standard of sample care while transporting to the laboratory.
• Consultant’s earthworks contractor will be re-engaged to remove any drill pads and restore both dams to its previous state, with the exception of the newly installed instrumentation.
- Questions/Inquires Deadline: July 4, 2025