North Harbour

Overview of Issue:

In 1985, the International Joint Commission identified forty-three different Areas of Concern (AOCs) across the Great Lakes where the environmental quality had deteriorated to the point that the beneficial use of these aquatic areas was being impacted.  Thunder Bay was identified as one of these areas of concern for a number of different reasons including the contaminated sediment in the Thunder Bay north harbour from historic effluent discharge of a former paper mill.

The site in question is contaminated with about 400,000 cubic meters of organic sediment deposited over 90 years of mill operations. This sediment is subsequently contaminated with mercury in concentrations that range from 2 to 11 ppm at the surface of the sediment to 21 ppm at depth.  The sediment layer itself is composed of a relatively fibrous material with thicknesses ranging from 40 to 380 centimeters and covering an area of about 26 hectares.

Approximate extent of the contaminated sediment in the Thunder Bay North Harbour.

 

Wet paper towel-like material located at the bottom of the Thunder Bay North Harbour.
Wet paper towel-like material located at the bottom of the Thunder Bay North Harbour.

Additional Photos.

In order to remediate these areas of concern the remedial action plan (RAP) was implemented which sought public input on the contamination and remediation efforts through their public advisory committee (PAC).  Over the years the PAC has received a variety of information on the contaminated sediment and the different options available to remediate it.  Links to these reports and presentations are presented below.

Key Documents:



Over the years the public has had the opportunity to review and comment on the above reports.  The PAC has compiled a selection of these responses and links to them are also presented below.

Public Consultations:

April 2010 – North Harbour Steering Committee (NHSC) Response to PAC Questions
October 2010 – Questions and Answers for the NHSC from September PAC Meeting
November 2011
– Answers to Questions generated at October PAC Meeting
December 2011 – Letter from the PAC to the NHSC
February 2012
– PAC Meeting Minutes
December 2012 – PAC Meeting Minutes
February 2013 – Answers to Questions generated at February PAC Meeting
April 2013 – Questions to Franz Environmental generated at April PAC Meeting
September 2013 – Updated North Harbour from Jamie Saunders for PAC Meeting
November 2013 – PAC Meeting Minutes
March 2014 – PAC Questions and Answers to Cole Engineering Presentation
March 2014 –Public’s Questions and Answers to Cole Engineering Presentation
March 2016 – Letter sent to federal and provincial MPPs, Chronicle Journal, Port Authority



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