Council approves tender for Uplands geotechnical work

WSP Canada starts geotechnical work on Uplands sewer separation project

WSP Canada Inc. starts work on the geotechnical work on the Uplands sewer separation project after a hearty request for proposal process.

WSP Canada Inc., proposed to do the work for $36,351, including GST.

The District of Oak Bay issued an RFP for the Phase 1 Geotechnical Investigation for the Uplands Combined Sewer Separation Project in late March and proponents met in early April. Six proposals were submitted to: undertake a geotechnical survey, to a maximum depth of five metres; determine the location of bedrock; assess the suitability of sub-surface soils as trench backfill and to record any other geotechnical information that would be of relevance to the installation of a pipe.

Proposals were received from: Golder Associates Ltd., Integrated Sustainability Consultants Ltd., Tetra Tech EBA Inc., Thurber Engineering Limited, Ryzuk Geotechnical and WSP Canada Inc. Submissions included two envelopes, one containing the technical proposal and the second holding the fee proposal.

Technical proposals were independently reviewed by Oak Bay staff and Uplands project manager Jack Hull using the criteria included in the RFP. The average of the individual scores determined the technical score. For a proposal to be considered further it must score at least 70 per cent of the available technical points. Integrated Sustainability was not considered further.

The envelopes with the fee proposals were opened and a combined technical and financial score calculated and WSP Canada Inc. had the highest combined technical and financial score.

WSP proposed a geophysical survey of the entire sewer alignment using ground penetrating radar with the aim of profiling shallow bedrock followed by truck-mounted augering to characterize and sample the soil as well as assess ground water conditions.

Finally, rock probing at specific locations will verify the bedrock profile detected during the geophysical survey. Standpipes are to be installed at selected auger holes to allow for groundwater measurements following the drilling.

 

 

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