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Analytical Results

Samples collected throughout the remediation work have been sent to accredited laboratories for analysis. Results of these analyses are compared to screening levels provided by the Ministry of Environment and Climate Change (MOECC), or another regulatory agency if MOECC criteria do not exist for the specific sample type. Analytical results are shared with regulatory agencies including the MOECC, Environment Canada, Ministry of Natural Resources and Forestry, Fisheries and Oceans Canada, and the Sudbury & District Health Unit.

Any questions for the MOECC can be directed to Provincial Officer George Lajeunesse at 705-235-1504 during normal working hours. Mr. Lajeunesse is the lead environmental officer on the file.

Surface Water and Residential Drinking Water Sampling

Posted Wednesday, September 30, 2015

On June 10, 2015, the Sudbury & District Health Unit (SDHU) lifted the drinking water advisory that came into effect Saturday, March 7, 2015, for residents who take their drinking water from Minisinakwa Lake or from wells supplied by the lake.  They also included in their statement that the water sampling data collected by CN and the Ministry of the Environment and Climate Change (MOECC) indicates that swimming and other recreational activities in Minisinakwa Lake do...

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Posted Sunday, May 03, 2015

Results from surface water sampling completed last week (on April 18 th , 21 st , and the 22 nd ) in the river and the lake indicate that compound concentrations at all sampling locations were minimal; however, small and intermittent patches of light sheen on the surface of the water, downstream of the derailment site in the river.

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View all Surface Water and Residential Drinking Water Sampling Reports

Groundwater Sampling

Posted Wednesday, January 27, 2016

To date, results from the perimeter groundwater wells have been below regulatory screening standards.
Additional groundwater monitoring wells were installed throughout the site after soil removal and backfilling activities were completed.  The first sampling event that included the source area wells was completed in November 2015.  An additional round was completed in December 2015.  Results from these sampling events show that concentrations of oil components...

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View all Groundwater Sampling Reports

Fish Tissue Sampling

Posted Wednesday, January 27, 2016

On September 10, 2015, the Ministry of the Environment and Climate Change (MOECC) issued a statement which indicated that they agree with CN’s opinion that concentrations of oil components in the fish in Minisinakwa Lake do not pose an unacceptable risk to human or wildlife health based on the data submitted and the analyses outlined within CN’s summary letter report.
The MOECC is currently analyzing the fish collected by CN during the sediment removal activities...

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Posted Wednesday, September 30, 2015

CN has received comments from the regulators regarding the fish data.  The Ministry of the Environment and Climate Change (MOECC) has indicated that they concur with CN’s opinion that concentrations of oil components in the fish in Minisinakwa Lake do not pose an unacceptable risk to human or wildlife health based on the data submitted and the analysis summarized within the summary letter report.  CN is reviewing all of the comments provided by the regulators and...

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Posted Sunday, May 03, 2015

CN has been collecting fish specimens from local fishermen including northern pike, whitefish, walleye (pickerel), cisco, ling (bowfin), and yellow perch.  We need more specimens less than 10 centimeters in size of all species.  CN is asking local fishermen to drop off specimens at the CN Public Information Centre, located at the Gogama Community Centre. The specimens will be sent to a third-party laboratory for analysis and testing for the presence of any oil products.
The...

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View all Fish Tissue Sampling Reports

Soil Sampling

Posted Wednesday, January 27, 2016

Soil samples were collected from soil excavation extents to confirm that no contaminated soil was left behind.  CN is currently preparing the soil remediation documentation which will be submitted to the regulators as part of the final report.

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View all Soil Sampling Reports

Sediment Sampling

Posted Friday, March 31, 2017

To continue sharing information with the public, CN is providing the letter report entitled “Addendum to the Sediment Sampling and Results – Fall 2016”, dated February 28, 2017.  The letter report summarizes the data collected for the confirmatory sediment sampling conducted between November 15, 2016 through November 25, 2016 following the 2016 sediment remediation, and provides the interpretation of the results in terms of risk to the benthic community...

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Posted Friday, November 04, 2016

Additional analysis of river sediment samples taken in September 2016 has determined that a total of three sites need more cleanup.  CN has received approval to clean the three areas using the same techniques used in 2015, so long as fish habitat is protected.  The work is expected to start on Monday, November 7 and should take about three weeks to complete.  We always make decisions based on science, and we make sure that there is a net environmental benefit for...

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Posted Wednesday, January 27, 2016

Sediment sampling was conducted as part of the ecological risk assessment stage to characterize the extents of impacted sediment.  Impacted sediment was limited to a 250 metre section of river centred between the rail bridge and the Old Gogama Road bridge (remedial area).  A phased sediment removal approach was selected to remove impacted sediment within the established remedial area.  CN maximized the removal of the fine particles where the oil was entrained,...

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View all Sediment Sampling Reports