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Carolyn Dunn Environmental Assessment Division Healthy Environments Consumer Safety Branch Health Ca

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Health Canada. High Lake Mine. Pre-Hearing Conference. December 5-7, 2007 Kugluktuk, Nunavut ... Health Canada Technical Topics. Noise. Air Quality. Country ... – PowerPoint PPT presentation

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Title: Carolyn Dunn Environmental Assessment Division Healthy Environments Consumer Safety Branch Health Ca


1
Carolyn DunnEnvironmental Assessment
DivisionHealthy Environments Consumer Safety
BranchHealth Canada
Health Canada Santé Canada
  • High Lake Mine
  • Pre-Hearing Conference
  • December 5-7, 2007 Kugluktuk, Nunavut

2
Health Canada Santé Canada
Health Canada Role
  • HC provides expert information or knowledge to
    the Nunavut Impact Review Board and Responsible
    Authorities regarding the potential impacts of
    the mine on human health, thereby improving the
    quality of the environmental assessment
  • HC is not a regulator and is not making any
    decisions on the High Lake mine.
  • HC was unable to attend the technical meeting so
    our technical comments will be quickly summarized
    here.

2
3
Health Canada Santé Canada
High Lake Mine Health Canada Technical Topics
  • Noise
  • Air Quality
  • Country Foods and Contaminants

3
4
Noise Monitoring
Health Canada Santé Canada
  • HC recommends that the proponent keep sound
    levels below 30dBA (as per the World Health
    Organisation) in workers' sleeping quarters,
    where economically and technically feasible. If
    needed, mitigation (i.e, noise barriers) should
    be applied to keep sleeping quarters quiet.

4
5
Air Quality
Health Canada Santé Canada
  • The predicted levels of fine particulate matter
    (PM2.5) are a health concern, since they are well
    over the threshold (Canada Wide Standard). Since
    workers will be resident at the site, they should
    be treated as a local population.
  • Diesel combustion is the major source of PM2.5 at
    the site, and is considered to have important
    health effects.
  • The mitigation measures identified appear to be
    inadequate, considering the level of exceedance
    (i.e., almost 14 times at the maximum predicted
    ground level) of the PM2.5 levels.
  • Further mitigation to reduce PM2.5 levels is
    needed.

5
6
Country Foods and Contamination
Health Canada Santé Canada
  • As shown in the EIS, baseline levels of
    methylmercury in fish may be a concern for local
    Inuit toddlers and women. Any increase in mercury
    deposition from the mining operations will
    increase the risk associated with methylmercury
    consumption. While mercury deposition from the
    mine is expected to be minimal, monitoring of
    mercury in fish tissue as required by the Metal
    Mining Effluent Regulations will provide
    assurances that levels of methylmercury in fish
    do not increase as a result of the mine.
  • Metals in dust along the road, affecting lichen
    (and caribou that humans consume), may be a
    concern, therefore monitoring is needed.

7
7
Pre-Hearing Conference Issues
Health Canada Santé Canada
  • Issues to be dealt with at the final public
    hearing include human health, especially noise,
    air quality and country foods.
  • HC requests further assessment of PM2.5, as part
    of the FEIS
  • HC prefers if the final public hearing takes
    place preferably during one work week, 3 months
    after submission of the FEIS. The location chosen
    should have sufficient public accommodations
    available for the participants from each
    organization.
  • HC suggests separate technical and
    non-technical/community parts of the final
    hearing, to ensure effective community
    consultation.

8
8
The End - thanks for your time
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