Methylmercury
The safety and health of people living in the project area is the most important thing we can do on the Muskrat Falls Project. Our team is focused on understanding methylmercury in the lower Churchill River system, particularly downstream of Muskrat Falls.
The project team has been working closely with independent technical experts and consultants from across the country to better understand this complex topic, and years of research and data have been collected in the local area to help inform decisions made about the project. We are committed to continue monitoring after construction is complete and as long as necessary to help ensure the health of people in the area is protected.
Methylmercury Monitoring (Water & Sediment)
Monitoring for methylmercury in water and sediment is currently taking place in various locations in the lower Churchill River area. You can learn more about this program and view data results in the links below.
In October 2016, Nalcor engaged Amec Foster Wheeler to undertake water and sediment sampling. This program includes baseline, impoundment and post-impoundment sampling of water and sediment at 11 locations from upstream of the future Muskrat Falls reservoir to Rigolet. Background information about this program is available in the links below.
As per the Water Quality Monitoring Plan, our teams collect water samples on a regular basis and the raw data collected can be found on the Provincial Government Environment and Climate Change page.
Water & Sediment Sampling Program Memos:
- Wood’s Water Sampling Program Memo, August 2022 Update
- Wood’s Water Sampling Program Memo, July 2022 Update
- Wood’s Water Sampling Program Memo, June 2022 Update
- Wood’s Water Sampling Program Memo, November 2021 Update
- Wood’s Water Sampling Program Memo, October 2021 Update
- Wood’s Water Sampling Program Memo, September 2021 Update
- Wood’s Water Sampling Program Memo, August 2021 Update
- Wood’s Water Sampling Program Memo, July 2021 Update
- Wood’s Water Sampling Program Memo, June 2021 Update
- Wood’s Water Sampling Program Memo, May 2021 Update
- Wood’s Water Sampling Program Memo, April 2021 Update
- Wood’s Water Sampling Program Memo, March 2021 Update
- Wood’s Water Sampling Program Memo, February 2021 Update
- Wood’s Water Sampling Program Memo, January 2021 Update
- Plain Language Summary of Water Sampling Program December 2020
- Wood’s Water Sampling Program Memo, December 2020 Update
- Wood’s Water Sampling Program Memo, November 2020 Update
- Wood’s Water Sampling Program Memo, October 2020 Update
- AGAT Lab Methylmercury Reference Method & QA/QC Procedures, Sept 2020
- Wood’s Water Sampling Program Memo, May 2020 Update
- Wood’s Sediment Sampling Memo, Sept 2020 – Goose Bay & Upper Lake Melville
- Plain Language Summary of Amec’s Water and Sediment Sampling Program
- Wood’s Sediment Sampling Memo, April 2019 – Goose Bay & Upper Lake Melville
- Wood’s Water Sampling Program Memo, July 24, 2020
- Wood’s Water Sampling Program Memo, May 21, 2020
- Wood’s Water Sampling Program Memo – April 21, 2020
- Wood’s Water Sampling Program Memo – March 17, 2020
- Wood’s Water Sampling Program Memo – February 19, 2020
- Wood’s Water Sampling Program Memo – February 3, 2020
- Wood’s Water Sampling Program Memo – December 20, 2019
- Wood’s Water Sampling Program Memo – November 26, 2019
- Wood’s Water Sampling Program Memo – October 31, 2019
- Wood’s Water Sampling Program Memo – August 19 2019
- Wood’s Water Sampling Program Memo – May 16, 2019
- Wood’s Water Sampling Program Memo – April 22, 2019
- Wood’s Water Sampling Program Memo – February 18, 2019
- Wood’s Water Sampling Program Memo – January 21, 2019
- Amec’s Sampling Program Memo – December 14, 2018
- Amec’s Sampling Program Memo – November 16, 2018
- Amec’s Sampling Program Memo – August 24, 2018
- Amec’s Sampling Program Memo – June 26, 2018
- Amec’s Sampling Program Memo – April 23,2018
- Amec’s Sampling Program Memo – March 23, 2018
- Amec’s Sampling Program Memo – Feb 20, 2018
- Amec’s Sampling Program Memo – Jan 29 2018
- Amec’s Sampling Program Memo – Dec 19 2017
- Amec’s Sampling Program Memo – November 17, 2017
- Amec’s Sampling Program Memo – September 28, 2017
- Amec’s Sampling Program Memo – September 15, 2017
- Amec’s Sampling Program Memo – August 8, 2017
- Amec’s Sampling Program Memo – May 23, 2017
- Amec’s Sampling Program Memo – May 10, 2017
- Amec’s Sampling Program Memo – March 27, 2017
- Amec’s Sampling Program Memo – February 9, 2017
- Amec’s Sampling Program Memo – January 30, 2017
Water & Sediment Analytics (Data):
- Wood’s Analytics – Water – 04 Jan 2023
- Wood’s Analytics – Sediment – 04 Jan 2023
- Wood’s Analytics – Water – 24 Nov 2022
- Wood’s Analytics – Sediment – 24 Nov 2022
- Wood’s Analytics – Water – 13 Oct 2022
- Wood’s Analytics – Sediment – 13 Oct 2022
- Wood’s Analytics – Water – 12 Sept 2022
- Wood’s Analytics – Sediment – 12 Sept 2022
- Wood’s Analytics – Water – 10 Aug 2022
- Wood’s Analytics – Sediment – 10 Aug 2022
- Wood’s Analytics – Water – 20 Jun 2022
- Wood’s Analytics – Sediment – 20 Jun 2022
- Wood’s Analytics – Water – 20 Apr 2022
- Wood’s Analytics – Sediment – 20 Apr 2022
- Wood’s Analytics – Water – 11 Mar 2022
- Wood’s Analytics – Sediment – 11 Mar 2022
- Wood’s Analytics – Water – 01 Feb 2022
- Wood’s Analytics – Sediment – 01 Feb 2022
- Wood’s Analytics – Water – 12 Jan 2022
- Wood’s Analytics – Sediment – 12 Jan 2022
- Wood’s Analytics – Water – 06 Dec 2021
- Wood’s Analytics – Sediment – 06 Dec 2021
- Wood’s Analytics – Water 30 Aug 2021
- Wood’s Analytics – Water – 01 Nov 2021
- Wood’s Analytics – Sediment – 01 Nov 2021
- Wood’s Analytics – Water 30 Aug 2021
- Wood’s Analytics – Water 27 Jul 2021
- Wood’s Analytics – Water 31 May 2021
- Wood’s Analytics – Water 21 April 2021
- Wood’s Analytics – Water 27 March 2021
- Woods Analytics Sediment – 28 Jan 2021
- Woods Analytics Water – 28 Jan 2021
- Woods Analytics Water – 18 Dec 2020
- Wood’s Analytics Water – 19 Nov 2020
- Wood’s Analytics Water – 18 Oct 2020
- Wood’s Analytics Water – 18 Sep 2020
- Wood’s Analytics Water – 16 Aug 2020
- Wood’s Analytics Sediment – 15 Jul 2020
- Wood’s Analytics Water – 15 Jul 2020
- Wood’s Analytics Sediment – 17 Jun 2020
- Wood’s Analytics Water – 17 Jun 2020
- Wood’s Analytics Sediment – 19 May 2020
- Wood’s Analytics Water – 19 May 2020
- Wood’s Analytics Sediment – April 16, 2020
- Wood’s Analytics Water – March 16, 2020
- Wood’s Analytics Sediment – March 16, 2020
- Wood’s Analytics Water – February 17, 2020
- Wood’s Analytics Sediment – February 17, 2020
- Wood’s Analytics Water – January 14, 2020
- Wood’s Analytics Sediment – January 14, 2020
- Wood’s Analytics Water – December 16, 2019
- Wood’s Analytics Sediment – December 16, 2019
- Wood’s Analytics Water – November 21, 2019
- Wood’s Analytics Sediment – November 21, 2019
- Wood’s Analytics Water – October 28, 2019
- Wood’s Analytics Sediment – October 28, 2019
- Wood’s Analytics Water – September 15, 2019
- Wood’s Analytics Sediment – September 15, 2019
- Wood’s Analytics Water – July 16, 2019
- Wood’s Analytics Sediment – July 16, 2019
- Wood’s Analytics Water – June 17, 2019
- Wood’s Analytics Sediment – June 17, 2019
- Wood’s Analytics Water – May 15, 2019
- Wood’s Analytics Sediment – May 15, 2019
- Wood’s Analytics Water – April 17, 2019
- Wood’s Analytics Sediment – April 17, 2019
- Wood’s Analytics Water – February 14, 2019
- Wood’s Analytics Sediment – February 14, 2019
- Wood’s Analytics Water – January 21, 2019
- Wood’s Analytics Sediment – January 21, 2019
- Amec’s Analytics Water – December 14, 2018
- Amec’s Analytics Sediment – December 14, 2018
- Amec’s Analytics Water – November 16, 2018
- Amec’s Analytics Sediment – November 16, 2018
- Amec’s Analytics Water – September 17, 2018
- Amec’s Analytics Sediment – September 17, 2018
- Amec’s Analytics Water – June 18, 2018
- Amec’s Analytics Sediment – June 18, 2018
- Amec’s Analytics Water – May 17 2018
- Amec’s Analytics Sediment – May 17 2018
- Amec’s Analytics Water – April 13 2018
- Amec’s Analytics Sediment – April 13 2018
- Amec’s Analytics Water – March 14 2018
- Amec’s Analytics Sediment – March 14 2018
- Amec’s Analytics Water – Jan 15, 2018
- Amec’s Analytics Sediment – Jan 15, 2018
- Amec’s Analytics Water – Dec 18, 2017
- Amec’s Analytics Sediment – Dec 18, 2017
- Amec’s Analytics Sediment – September 12, 2017
- Amec’s Analytics Water – September 12, 2017
- Amec’s Analytics Sediment – July 30, 2017
- Amec’s Analytics Water – July 30, 2017
- Amec’s Analytics Sediment – June 27, 2017
- Amec’s Analytics Water – June 27, 2017
- Amec’s Analytics Water – April 26, 2017
- Amec’s Analytics Sediment – Feb 20, 2017
- Amec’s Analytics Water – Feb 20, 2017
Related Studies and Reports (Methylmercury)
- Wood Memo on Lake Melville Methylmercury Values – Updated April 2019
- Dillon Consulting Memo on Human Health Risk Assessment – Overview of HHRA & Assessment of Potential Human Exposures & Risks due to Methylmercury – Nov 2018
- Harris Technical Memo on Muskrat Falls Modelling – August 2018
- Baird Lake Melville Modelling Summary – August 2018
- Predicted Increases in Fish Methylmercury Muscle Tissue Concentrations in Goose Bay and Lake Melville – July 2018
- Azimuth HHRA Technical Memo – July 2018
- Letter to Minister Joyce Re: IEAC methylmercury modelling – April 2018
- Lake Melville MeHg Mass Balance Perspective – February 2018
- Muskrat Falls Soil Sampling Program Report – June 26, 2017
- Technical Memorandum: Azimuth Opinion_Methylmercury Concentrations in Lower Churchill River Post-inundation – July 31, 2017
- Technical Memorandum: Azimuth Report_Quantitative Measurement of Labile Carbon in Organic Soils of the Lower Churchill River_Oct 18, 2017
- Technical Memorandum: Azimuth Analysis of Methylmercury in the Lower Churchill River Between Oct 2016 and Sept 2017 – Nov 6 2017
