City releases final Colliery Dam Technical report

Summary

Golder and Associates, the engineering firm hired by the Colliery Dam Technical Committee, has delivered the fifth and final technical report to the City. Now available on the City's website, this report provides an analysis of remediation options carried out with the Technical Committee and references Golder's four previous reports. Golder's reports on the Colliery Dams, now totalling five, supplement additional information posted to the City's website.

Link to Strategic Plan: Taking Responsibility to be an excellent municipal government; Asset Management.

Key Points

  • The final of five reports prepared by Golder and Associates is now available on the City's website.
  • The City encourages members of the public interested in learning more about the Colliery Dams to regularly visit the City's website to obtain new information or review past updates.

Quotes

"This report provides Golder's analysis of the options generated by the Technical Committee. Members of the community who are interested in learning about the remediation options for Colliery Dams and the work undertaken by the Technical Committee are encouraged to read this final report."

Acting GM Comm Development and Protective Services
City of Nanaimo

Quick Facts

  • Since its creation in the fall of 2013, the Colliery Dam Technical Committee has spent the past eight months exploring remediation options for both the Lower and Middle Colliery Dams.
  • A key objective of the Technical Committee’s work included developing an environmentally, minimally invasive, cost and time-effective solution that addresses the safety of residents and businesses downstream of the dams and meets the requirements of the Provincial Dam Safety Regulations.
  • Golder has identified two remediation options, 1) enlarging the existing spillway from an average depth of 1.5m to 5m or; 2) modifying the dam by adding a hardened surface to protect the embankment below the dam in the event that water overtops the dam during a severe storm.
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Contact:

Toby Seward
Acting GM Comm Development and Protective Services
City of Nanaimo
250-755-4424
Philip Cooper
Communications Manager
City of Nanaimo
250-755-4532

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