Annual SO2 Report Submission

SO2 Monitoring Network for Sudbury January to December 2017

Vale Limited/Glencore Canada Corporation

May 14, 2018

578 Sharalin Crt. | Burlington, ON, L7T 2N8 | 705-929-2103 | [email protected] | www.idealehs.ca

May 4, 2018

Ministry of the Environment and Climate Change Sudbury District Office 199 Larch St., Suite 1201 Sudbury, P3E 5P9

Dear District Manager,

Re: 2017 Annual Report

SO2 Monitoring Network for Sudbury

Enclosed is the 2017 Annual Report for the Sudbury SO2 Monitoring Network prepared by IDEAL EHS Systems on behalf of Vale and Glencore.

Please do not hesitate to contact me at 705-929-2103, or by E-mail at [email protected] if you have any concerns or require further information.

Regards,

Ed Cocchiarella, P. Eng., EP(EMS). Principal IDEAL EHS Systems, Ltd.

cc. Guowang Qiu Monika Greenfield Chad Pearson Marc Gascon Air Quality Analyst Superintendent, Environment Superintendent, Environment Manager, Product Support MOECC Vale Canada, Limited, Glecore Canada Corporation BESTECH 199 Larch Street, Suite 1201 337 Power Street, SINO 1040 Lorne Street, Unit 3 Sudbury, ON, P3E 5P9 Cliff, ON, P0M 1N0 Falconbridge, ON, POM 1S0 Sudbury, ON, P3C 4R9

578 Sharalin Crt. | Burlington, ON, L7T 2N8 | 705-929-2103 | [email protected] | www.idealehs.ca

Revision History Revision Revision date Details Name Position

0 March 28, 2018 Draft Ed Cocchiarella Principal, IDEAL EHS

1 May 4, 2018 Final Ed Cocchiarella Principal IDEAL EHS

Distribution List # Hard Copies PDF Required Association / Company Name Yes Ministry of Environment and Climate Change

1 Yes Vale Canada Limited

Yes Glencore Canada Corporation

Yes BESTECH

Prepared for: Vale Canada Limited / Glencore Canada Corporation

Prepared by:

Ed Cocchiarella, P.Eng, EP(EMS) IDEAL EHS Systems, Ltd. 578 Sharalin, Crt. Burlington, ON L7T 2N8 T: 705-929-2103 idealehs.ca

© 2017, 2018 IDEAL EHS Systems, Ltd. All Rights Reserved.

This document has been prepared by IDEAL EHS Systems, Ltd. (“IDEAL EHS”) for sole use of our client (the “Client”) in accordance with generally accepted consultancy principles, the budget for fees and the terms of reference agreed between IDEAL EHS and the Client. Any information provided by third parties and referred to herein has not been checked or verified by IDEAL EHS, unless otherwise expressly stated in the document. No third party may rely upon this document without the prior and express written agreement of IDEAL EHS.

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2017 Annual Report Sudbury SO2 Monitoring Network

Prepared for: Vale Canada Limited and Glencore Canada Corporation

May, 2018

Prepared by:

Ed Cocchiarella, P. Eng, EP(EMS), Principal

578 Sharalin Crt. | Burlington, ON, L7T 2N8 | 705-929-2103 | [email protected] | www.idealehs.ca

Table of Contents Table of Contents ...... 2 List of Tables ...... 3 List of Figures ...... 3 Executive Summary ...... 4 1 Introduction ...... 8 1.1 General Overview ...... 8 2 Summary of Overall Operations ...... 9 2.1 Parameters Monitored ...... 9 2.2 Inventory of SO2 Equipment ...... 10 2.3 Meteorological Measurement Equipment ...... 14 2.4 Summary of Site Visits – BESTECH ...... 15 2.5 MOECC Audits ...... 16 2.6 Data Loss and Backup ...... 18 3 Percent Valid Data Statistics ...... 19 3.1 SO2 Valid Data Collection Performance ...... 19 3.2 Meteorological Valid Data Collection Performance ...... 20 4 Annual Statistics ...... 21 4.1 Hourly SO2 Concentrations Overview ...... 21 4.2 Maximum Daily SO2 Concentrations ...... 22 4.3 Summary of Measured SO2 Concentrations Above AAQC ...... 23 4.4 Source Contribution Assessment for Measured SO2 Concentrations Above AAQC ...... 24 4.5 Annual SO2 Average Concentrations Overview ...... 25

5 Annual SO2 Results Comparison ...... 27 6 References ...... 29 Appendix A. Equiment Inventory Appendix B. Summary of Site Visits and Lists of Problems Appendix C. Figures

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578 Sharalin Crt. | Burlington, ON, L7T 2N8 | 705-929-2103 | [email protected] | www.idealehs.ca

List of Tables Table 1. Annual Arithmetic Mean SO2 Concentrations for January to December 2017 ...... 5 Table 2. Summary of SO2 Annual Valid Data Collection for 2017 ...... 6 Table 3. Summary of Annual Valid Data Collection for Meteorological Data at STN77025 and Falconbridge MET ...... 7 Table 2-1. Parameters Monitored at Sudbury SO2 Monitoring Network ...... 9 Table 2-2. SO2 Analyzer Inventory ...... 10 Table 2-3. Station Upgrades and Replacements in 2017 ...... 11 Table 2-4. Calibration Summary at Each Monitoring Station in 2017 ...... 15 Table 2-5. MOECC Audits at Each SO2 Monitoring Station – Date & Result ...... 16 Table 3-1. SO2 Valid Data Collection at Each Monitoring Station ...... 19 Table 3-2. Meteorological Valid Data Collection Performance at STN77025 and Falconbridge MET ... 20 Table 4-1. Maximum Hourly SO2 Concentrations – January to December 2017 ...... 21 Table 4-2. Maximum Daily SO2 Concentrations – January to December 2017 ...... 22 Table 4-3. SO2 Measured Concentrations above AAQC ...... 23 Table 4-4. Source Contribution Assessment for the Measured SO2 Concentrations above the Hourly AAQC ...... 24 Table 4-5. Annual Mean SO2 Concentrations – January to December 2017 ...... 25 Table 5-1. Average Annual SO2 Concentrations for 2016 and 2017 ...... 27

List of Figures Figure 4-1. Annual Mean SO2 Concentration – January to December 2017 ...... 26 Figure 5-1. Annual Mean SO2 Concentrations Comparison ...... 28

Page 3 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2017 Annual Report Sudbury SO2 Monitoring Network

Executive Summary

BESTECH was retained by Vale and Glencore to operate and maintain eighteen (18) SO2 monitoring stations in the Sudbury area. IDEAL EHS Systems, Ltd. (IDEAL EHS) was retained by BESTECH to perform data analysis and reporting on their behalf. Regular quality assurance checks, data analysis and monthly, quarterly and annual reporting to the Ministry of the Environment and Climate Change (MOECC) are key components of this assignment.

This annual report presents an overview of the SO2 concentrations observed at each of the monitoring stations and the meteorological conditions observed at STN77025 and Falconbridge MET for a one (1) year period from January 1st to December 31st, 2017. This report also includes an overview of the monitoring equipment inventory, site visits, audits and valid data collection performance parameters. These components provide a summary of the operational aspects of the monitoring network.

This report includes statistical analysis of the measured SO2 data for the eighteen (18) monitoring stations and meteorological data for two (2) met stations equipped with meteorological instrumentation.

BESTECH performs all field related activities, station maintenance and calibration, raw data retrieval, editing and storage. IDEAL EHS performs the necessary data quality assurance, statistical analysis and reporting functions.

Page 4 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

A summary of the monitoring stations and the annual arithmetic mean SO2 concentrations from January 1st to December 31st, 2017 is presented in Table 1.

Table 1. Annual Arithmetic Mean SO2 Concentrations for January to December 2017

2017 Annual SO2 Average Station Concentration (ppb) STN77231 - Algonquin 0.9 STN77028 - Coniston 1.3 STN77218 - Copper Cliff 1.9 STN77228 - Dozzi Park 1.3 STN77600 - Edison 1.4 STN77065 - Garson 1.5 STN77013 - Hanmer 0.9 STN77225 - Kelly Lake 0.8 STN77227 - Kinsmen 1.1 STN77075 - New Sudbury 0.6 STN77601 - Parkinson 2.3 STN77206 - Rayside 0.6 STN77203 - Science North 1.0 STN77012 - Skead 1.7 STN77230 - Spruce 1.5 STN77602 - Sunderland 1.4 STN77330 - Union 2.2 STN77603 - Wahnapitae 0.7

Notes: Annual Ambient Air Quality Criteria (AAQC) for SO2 = 20 ppb

Page 5 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

All SO2 monitoring stations met the minimum performance criterion of 90% valid data availability as shown in Table 2. The annual valid data collection for the eighteen (18) monitoring stations was based on 8,760 hours.

Table 2. Summary of SO2 Annual Valid Data Collection for 2017

2017 Valid Data Station Performance (%) STN77231 - Algonquin 99.8% STN77028 - Coniston 99.5% STN77218 - Copper Cliff 98.8% STN77228 - Dozzi Park 99.5% STN77600 - Edison 99.4% STN77065 - Garson 99.8% STN77013 - Hanmer 99.5% STN77225 - Kelly Lake 99.3% STN77227 - Kinsmen 99.0% STN77075 - New Sudbury 99.7% STN77601 - Parkinson 99.5% STN77206 - Rayside 99.6% STN77203 - Science North 99.6% STN77012 - Skead 99.7% STN77230 - Spruce 99.7% STN77602 - Sunderland 99.4% STN77330 - Union 99.6% STN77603 - Wahnapitae 99.6%

Page 6 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Tables 3 summarize the annual percent valid data collection at STN77025 and Falconbridge MET, respectively. Wind direction and wind speed instruments were installed at the 30m level of Falconbridge MET and began reporting in September 2017. Overall, all the meteorological parameters met the 90% valid data availability criteria.

Table 3. Summary of Annual Valid Data Collection for Meteorological Data at STN77025 and Falconbridge MET

2017 Valid Data Met Parameter Performance (%)

STN77025 - CKNC Tower at Frood Temperature at 12m (T1) 100.0% Temperature at 114m (T3) 100.0% Delta Temp. (T3 - T1) 100.0% Wind Direction at 12m (WD1) 100.0% Wind Direction at 114m (WD3) 100.0% Wind Speed at 12m (WS1) 99.4% Wind Speed at 114m (WS3) 99.0%

Falconbridge MET -- Met Tower at Falconbridge Temperature at 2m (T1) 99.8% Temperature at 60m (T3) 99.8% Delta Temp. (T3 - T1) 99.8% Wind Direction at 60m (WD1) 99.6% Wind Direction at 30m (WDL)* 99.6% Wind Speed at 60m (WS1) 99.6% Wind Speed at 30m (WSL)* 99.6%

Notes: *Two new instruments began reporting in September 2017 at Falconbridge MET: Wind Direction (WDL) and Speed (WSL) at 30 m. Valid Data Performance for these two parameters represents September to December 2017 performance.

Page 7 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

1 Introduction

BESTECH was retained by Vale and Glencore to operate and maintain eighteen (18) SO2 monitoring stations in the Sudbury area. IDEAL EHS Systems, Ltd. (IDEAL EHS) was retained by BESTECH to perform the data analysis and reporting on their behalf. BESTECH and IDEAL EHS conducted this work from January to December 2017. This annual report is a component of the reporting requirements that Vale and Glencore must provide to the Ministry of the Environment and Climate Change (MOECC).

This report has been prepared following the guidance of the report issued by the MOECC Operations Manual for Air Quality Monitoring in Ontario (MOECC, March 2008 & February 2018). IDEAL EHS is responsible for reporting monitoring data while BESTECH is responsible for calibration and maintenance of the monitoring equipment.

This annual report summarizes the measured ambient SO2 concentrations at the eighteen (18) monitoring stations and the meteorological conditions from the two (2) meteorological stations (STN77025 and Falconbridge MET), located in Sudbury and Falconbridge, Ontario.

1.1 General Overview There are currently eighteen (18) SO2 monitoring stations and two (2) meteorological stations situated in Sudbury and its surrounding area. Prior to April 2004, eleven (11) of these monitoring stations and one (1) meteorological station (STN77025) were owned and operated by the MOECC. Since then, the ownership and responsibility for maintenance, calibration and data reporting have been transferred jointly to Vale and Glencore and the following changes have occurred:

th th • In 2007, two (2) new stations were added as the 12 and 13 stations (STN77230 and STN77231). • In May 2008, four (4) stations (STN77600, STN77601, STN77602 and STN77603) and one (1) MET station (Falconbridge MET) were included in the reporting for the Sudbury SO2 Monitoring Network. Glencore had previously reported them. • In December 2009, STN77201 (Mikkola) was relocated from 150 Patricia Street to 1 Mikkola Road and renamed STN77227 (Kinsmen). • In November 2013, STN77330 (Union) was added to the monitoring network as the 18th station. BESTECH was retained by Vale and Glencore to administer this monitoring network on their behalf. • In September 2017, Wind Speed and Wind Direction were added to the Falconbridge MET at 30 m elevation.

BESTECH has calibrated all of the eighteen (18) stations in accordance with the MOECC Operations Manual for Air Quality Monitoring in Ontario (March 2008 & February 2018). BESTECH and IDEAL EHS Ltd. have carried out daily data checks, data editing and monthly data checks.

A map showing the location of the monitoring stations, the MET stations and the Vale and Glencore sites is presented in Appendix C.

Page 8 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2 Summary of Overall Operations

2.1 Parameters Monitored The parameters monitored at the Sudbury SO2 Monitoring Network stations are mainly SO2 concentrations, wind speed, wind direction, and ambient temperatures. Table 2-1 presents the parameters monitored at each of the monitoring stations.

Table 2-1. Parameters Monitored at Sudbury SO2 Monitoring Network

Station ID Location Data

STN77012 (Skead) Bowlands Rd, Skead P0M 2Y0 SO2

STN77013 (Hanmer) 4896 Notre Dame, Hanmer P0M 1H0 SO2

STN77028 (Coniston) 103 Edward St., Coniston P0M 1M0 SO2

STN77065 (Garson) 3610 Falconbridge Hwy, Garson P3L 1E6 SO2

STN77075 (New Sudbury) 1400 Barrydowne Rd., Sudbury P3A 3V8 SO2

STN77227 (Kinsmen) 1 Mikkola Rd, Lively P3Y 1A5 SO2

STN77203 (Science North) Science North 3rd Floor, Sudbury P3E 5S9 SO2, Solar Radiation

STN77206 (Rayside) 3535 Regional Road 15, Chelmsford P0M 1L0 SO2

STN77218 (Copper Cliff) 43 Veteran St., Copper Cliff P0M 1N0 SO2

STN77225 (Kelly Lake) 1379 Stephen St., Sudbury P3E 2ME SO2

STN77228 (Dozzi Park) 15 Glover St., Sudbury P3C 5M5 SO2, Barometric Pressure

STN77230 (Spruce Street) 636 Spruce St., Sudbury P3C 1R2 SO2

STN77231 (Algonquin) 2646 Algonquin Rd, Sudbury P3E 4X6 SO2

STN77330 (Union) Union and Marconi P0M 1N0 SO2

STN77600 (Edison) 6 Edison Rd, Falconbridge P0M 1S0 SO2

STN77601 (Parkinson) Parkinson Rd, Playground, Falconbridge P0M SO2 1S0

STN77602 (Sunderland) Lot 4, Sunderland Rd., Garson P3L 1E6 SO2

STN77603 (Wahnapitae) Dryden Twp, Wahnapitae P0M 3C0 SO2 Temperature, Wind Speed and Wind STN77025 (CKNC Tower @ Frood) 699 Frood Rd., Sudbury P3C 5A3 Direction at 12 m and 114 m elevations Temperature at 2 m and 60 m elevations, Wind Speed and Wind Falconbridge MET 6 Edison Rd, Falconbridge Bsmt of XPS P0M Direction at 60 m elevation. (Met Tower @ Falconbridge) 1S0 Beginning Sept. 2017, Wind Speed and Wind Direction at 30 m elevation

Page 9 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2.2 Inventory of SO2 Equipment The existing SO2 sampling equipment is based on pulsed fluorescence SO2 analyzers. For instrument calibrations, the span gas is drawn through an SO2 oven with an SO2 source and the zero gas is drawn through a charcoal source. Each analyzer is a self- contained, rack-mounted unit with associated sample conditioning system connected to an external sample port.

Table 2-2 lists each of the analyzer types, the age of the unit, measurement range and the station where it is located.

Table 2-2. SO2 Analyzer Inventory

SO2 Analyzer Type Quantity Age Station Measurement Range (ppb)

TECO 43I 23 2017 Vale Mobile 0 – 10 000 2017 Vale Spare #1 2015 Wahnapitae 2013 Algonquin 2013 Copper Cliff 2013 New Sudbury 2012 Contractor PL 2010 Garson 2010 Skead 2009 Science North 2008 Vale Spare #2 2008 Edison 2008 Coniston 2008 Parkinson 2008 Sunderland 2008 Kelly Lake 2008 Kinsmen 2007 Union 2006 Hanmer 2006 Rayside 2006 Spruce < 8 years Sudbury INO Spare #1 < 8 years Sudbury INO Spare #2 TECO 43C 2 ~ 15 years Vale Spare #3 0 – 10 000 Vale Spare #4

Notes: INO = Integrated Operations

Page 10 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Table 2-3 lists all of the station upgrades and replacements that were made in 2017 including the month in which the upgrades or replacement occurred.

Table 2-3. Station Upgrades and Replacements in 2017

Month of Station ID Upgrades Upgrade 114 Meter Anemometer July CKNC 114 Meter Temperature Sensor October

Permeation Tube Replacement August STN77012 (Skead) New Large UPS Installation (PLC and SO2 Instrument) August

Modem Replacement March

UPS Replacement June

Annual Preventative Maintenance July

STN77013 (Hanmer) Flash Lamp Replacement July

Mirror Assembly Replacement July

New Large UPS Installation (PLC and SO2 Instrument) August

Temp Control Repair November

New Large UPS Installation (PLC and SO2 Instrument) August STN77028 (Coniston) Permeation Tube Replacement November

New Large UPS Installation (PLC and SO2 Instrument) August STN77065 (Garson) Permeation Tube Replacement October

Permeation Tube Replacement March

New Large UPS Installation (PLC and SO2 Instrument) August STN77075 (New Sudbury) Permeation Tube Replacement December

Flash Lamp Replacement December

New Large UPS Installation (PLC and SO2 Instrument) August STN77203 (Science North) Annual Preventative Maintenance December

New Large UPS Installation (PLC and SO2 Instrument) August STN77206 (Rayside) Annual Preventative Maintenance December

New Large UPS Installation (PLC and SO2 Instrument) August

Pump Replacement October STN77218 (Copper Cliff) Channel Reconfiguration December

Motherboard Replacement December

Air Conditioner Replacement June

Station Door Adjustment July STN77225 (Kelly Lake) Station Ground Leveling July

New Large UPS Installation (PLC and SO2 Instrument) August

Page 11 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Month of Station ID Upgrades Upgrade Flash Lamp Replacement November

Pump Rebuild January

Air Conditioner Replacement March

Motherboard Replacement March

Permeation Oven Replacement May STN77227 (Kinsmen) Temperature Sensor Replacement August

New Large UPS Installation (PLC and SO2 Instrument) August

Annual Preventative Maintenance November

Flash Lamp Replacement November

Permeation Tube Replacement March

Modem Replacement (Eastlink) July STN77228 (Dozzi) New Large UPS Installation (PLC and SO2 Instrument) August

Annual Preventative Maintenance December

Solar Powered Lights Installation February

Power Supply Replacement May

STN77230 (Spruce Street) New Large UPS Installation (PLC and SO2 Instrument) August

Annual Preventative Maintenance September

Flash Lamp Replacement September

Internal Temperature Thermistor Replacement April

Annual Preventative Maintenance July STN77231 (Algonquin) Flash Lamp Replacement July

New Large UPS Installation (PLC and SO2 Instrument) August

New Large UPS Installation (PLC and SO2 Instrument) August STN77330 (Union) Annual Preventative Maintenance November

New Large UPS Installation (PLC and SO2 Instrument) August STN77600 (Edison) I/O Board Replacement November

Pump Rebuild January

Permeation Tube Replacement March

New Large UPS Installation (PLC and SO2 Instrument) August STN77601 (Parkinson) Annual Preventative Maintenance October

Permeation Oven Housing Replacement October

Permeation Tube Replacement October

Pump Rebuild March STN77602 (Sunderland) New Large UPS Installation (PLC and SO2 Instrument) August

Motherboard Replacement April STN77603 (Wahnapitae) New Large UPS Installation (PLC and SO2 Instrument) August

Page 12 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

The SO2 and meteorological data is collected using the BESTECH data acquisition system that downloads station information to the BESTECH office in Sudbury. Additional details on the data back-up process are provided in Section 2.6.

Appendix A presents the equipment inventory for 2017 with all relevant details for each of the eighteen (18) monitoring stations.

Page 13 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2.3 Meteorological Measurement Equipment There are two (2) stations equipped with meteorological measurement systems to provide continuous weather data: the CKNC MET station and the Falconbridge MET station.

The STN77025 MET station is located at the MCTV transmission tower. It is a dedicated meteorological station that takes measurements of temperature, wind speed and wind direction at 12 m and 114 m elevations.

The second meteorological tower is designated as Falconbridge MET, which is a dedicated meteorological station that takes measurements of temperature at 2 m and 60 m elevations and wind speed and wind direction at 30 m and 60 m elevation.

Appendix A presents the overall summary of the equipment at both MET stations.

Page 14 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2.4 Summary of Site Visits – BESTECH During the period from January to December 2017, each monitoring station was calibrated once per month resulting in (12) calibrations during the year for each station. Additional site visits were made for MOECC audits and when the stations experienced instrumentation or server problems. Table 2-4 identifies the calibration dates at each of the monitoring stations.

Table 2-4. Calibration Summary at Each Monitoring Station in 2017

Station Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec STN77231 - 04-May 10-Jan 21-Feb 06-Mar 13-Apr 12-Jun 12-Jul 01-Aug 05-Sep 17-Oct 02-Nov 04-Dec Algonquin 31-May STN77028 - 07-Mar 20-Jan 09-Feb 18-Apr 02-May 02-Jun 10-Jul 09-Aug 14-Sep 17-Oct 17-Nov 15-Dec Coniston 21-Mar STN77218 - 27-Jan 01-Feb NA* 12-Apr 08-May 09-Jun 05-Jul 08-Aug 07-Sep 19-Oct 15-Nov 05-Dec Copper Cliff STN77228 – 13-Jan 07-Feb 30-Mar 17-Apr 10-May 09-Jun 18-Jul 17-Aug 06-Sep 18-Oct 15-Nov 04-Dec Dozzi Park 24-Jan STN77600 - 26-Jan 23-Feb 22-Mar 27-Apr 23-May 08-Jun 26-Jul 24-Aug 22-Sep 19-Oct 15-Nov 14-Dec Edison STN77065 - 13-Jan 09-Feb 29-Mar 17-Apr 16-May 07-Jun 26-Jul 15-Aug 18-Sep 02-Oct 21-Nov 19-Dec Garson 03-Mar STN77013 - 13-Jul 30-Jan 15-Feb 14-Mar 04-Apr 05-May 14-Jun 03-Aug 12-Sep 11-Oct 20-Nov 14-Dec Hanmer 21-Jul 28-Mar STN77225 - 01-Mar 14-Aug 27-Jan 22-Feb 06-Apr 09-May 16-Jun 18-Jul 10-Sep 18-Oct 14-Nov 22-Dec Kelly Lake 03-Mar 31-Aug STN77227 - 04-Jan 06-Feb 19-May 06-Jun 02-Mar 03-Apr 04-Jul 01-Aug 05-Sep 10-Oct 03-Nov 15-Dec Kinsmen 11-Jan 21-Feb 30-May 15-Jun STN77075 - 31-Jan 24-Feb NA* 19-Apr 24-May 15-Jun 25-Jul 10-Aug 21-Sep 20-Oct 27-Nov 19-Dec New Sudbury STN77601 - 27-Jan 27-Feb 23-Mar 27-Apr 17-May 15-Jun 26-Jul 21-Aug 21-Sep 13-Oct 23-Nov 14-Dec Parkinson 04-Apr STN77206 - 02-Mar 05-May 20-Jan 08-Feb 06-Apr 06-Jun 21-Jul 03-Aug 12-Sep 10-Oct 10-Nov 06-Dec Rayside 14-Mar 30-May 20-Apr STN77203 - 03-Jan 02-Feb 31-Mar 13-Apr 26-May 13-Jun 24-Jul 10-Aug 19-Sep 18-Oct 27-Nov 20-Dec Science North 11-Jan 06-Jan STN77012 - 07-Mar 12-Jan 15-Feb 05-Apr 11-May 01-Jun 07-Jul 24-Aug 18-Sep 11-Oct 27-Nov 14-Dec Skead 14-Mar 24-Jan STN77230 - 30-Jan 02-Feb 13-Mar 13-Apr 10-May 16-Jun 11-Jul 25-Aug 06-Sep 18-Oct 27-Nov 20-Dec Spruce STN77602 - 27-Jan 14-Feb 22-Mar 27-Apr 15-May 05-Jun 25-Jul 21-Aug 14-Sep 19-Oct 23-Nov 13-Dec Sunderland STN77330 - 13-Feb 18-Jan 06-Mar 12-Apr 08-May 09-Jun 05-Jul 08-Aug 07-Sep 16-Oct 03-Nov 05-Dec Union 22-Feb STN77603 - 23-Jan 14-Feb 23-Mar 24-Apr 09-May 05-Jun 20-Jul 09-Aug 14-Sep 17-Oct 21-Nov 15-Dec Wahnapitae Notes: * NA – not available; Monthly calibration not performed due to unfavorable wind direction during available service hours

Appendix B presents an overall summary of all site visits due to instrumentation and server issues at each station.

Page 15 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2.5 MOECC Audits A representative from the Sudbury District MOECC office conducts audits at each station two to four times per year. In 2017, three audits were planned at each station. Table 2-5 summarizes the dates when the audits were performed and the outcomes.

Table 2-5. MOECC Audits at Each SO2 Monitoring Station – Date & Result

Audit 1 Audit 2 Audit 3 Station Monitor Monitor Monitor Date Date Date Performance Performance Performance STN77231 - Mar 13 Criteria Met Jun ** Criteria Met Oct 23 Criteria Met Algonquin STN77028 - Mar 13 Criteria Not Met Jun 21 Criteria Met Oct 25 Criteria Met Coniston STN77218 - Mar 14 Criteria Met Jun 22 Criteria Met Oct 23 Criteria Met Copper Cliff STN77228 – Mar 10 Criteria Met Jun 23 Criteria Met Oct 23 Criteria Met Dozzi Park STN77600 - Mar 7 Criteria Met Jun 13 Criteria Met Oct 25 Criteria Met Edison STN77065 - Mar 10 Criteria Met Jun 21 Criteria Met Oct 24 Criteria Met Garson STN77013 - Mar 9 Criteria Met Jun 20 Criteria Met Oct 25 Criteria Met Hanmer STN77225 - Mar 13 Criteria Met Jun 23 Criteria Met Oct 23 Criteria Met Kelly Lake STN77227 - Mar 14 Criteria Met Jun 21 Criteria Met Oct 23 Criteria Met Kinsmen STN77075 - Mar 10 Criteria Met Jun 22 Criteria Met Oct 23 Criteria Met New Sudbury STN77601 - Mar 7 Criteria Met Jun 20 Criteria Met Oct 25 Criteria Met Parkinson STN77206 - Mar 9 Criteria Met Jun 20 Criteria Met Oct 25 Criteria Met Rayside STN77203 - Mar 10 Criteria Met Jun 23 Criteria Met Oct 24 Criteria Met Science North STN77012 - Mar 9 Criteria Met Jun 20 Criteria Met Oct 26 Criteria Met Skead STN77230 - Mar 10 Criteria Met Jun 26 NA* Oct 23 Criteria Met Spruce STN77602 - Mar 7 Criteria Met Jun 13 Criteria Met Oct 25 Criteria Met Sunderland STN77330 - Mar 14 Criteria Met Jun 26 Criteria Met Oct 23 Criteria Met Union STN77603 - Mar 7 Criteria Met Jun 13 Criteria Met Oct 24 Criteria Met Wahnapitae *NA: Not Available. No access to Spruce Street site due to major construction. **Date not specified on field sheet. MOECC letter indicates audits performed on June 20, 21, 22, 23 or 26.

Page 16 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

There were a total of three (3) audits performed by the MOECC at the eighteen (18) monitoring stations between January 2017 and December 2017, except for the STN77230 (Spruce) site where only two (2) audits were performed. The site could not be accessed due to major construction during the scheduled audit in the second quarter.

With the exception of the audit performed at STN77028 (Coniston), all audits recorded in the MOECC Audit Reports met the MOECC criteria. The audits indicate good performance at each of the monitoring stations.

The MOECC completed an audit of STN77028 (Coniston) on March 13, 2017. It was determined that STN77028 (Coniston) did not pass the required criteria because the calibrator was out of specification. MOECC required that the SO2 data undergo a correction of 13 % (down) from the previous audit date (February 9, 2017) up to the March 13th audit.

Page 17 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

2.6 Data Loss and Backup Bestech maintains a back-up of the raw data for each station on the Programmable Logic Controller (PLC) using a compact flash card. Compact flash cards are exchanged at periodic intervals and maintained by Bestech. The old compact flash cards containing past data are currently in storage at the Bestech Lorne office.

The Sudbury SO2 network data is collected over high speed internet connections. When high speed internet connections are lost, a bank of dial-up modems is used to collect data until the high speed connection is restored. The systems database is continuously backed up via a SQL database replication bridge. Data is backed up to both staging servers. One is used for Vale ERP data and the other is used for Sudbury INO data. A fourth server known as the standby backup clone also receives replicated data and can be used for a primary server should the main server fail. Due to reliability of new computer hardware and stability of software, server swaps are no longer performed.

During this annual reporting period, there were few significant losses of data. Those that did occur were mainly the result of station calibrations and instrumentation problems.

A summary of incidents that resulted in data losses for each of the SO2 monitoring stations and MET stations is presented in Appendix B.

Page 18 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

3 Percent Valid Data Statistics Overall, all parameters met the performance criteria with an annual valid data collection greater than 90% at the eighteen (18) SO2 monitoring stations and the meteorological towers (STN77025 and Falconbridge MET).

The following sections summarize the valid data collection performance for SO2 and for the meteorological data collected from January to December 2017.

3.1 SO2 Valid Data Collection Performance For the overall annual period, SO2 data availability at eighteen (18) of the monitoring stations met the 90% performance criterion.

Table 3-1. SO2 Valid Data Collection at Each Monitoring Station

2017 Valid Data Performance (%) Station Annual Q1 Q2 Q3 Q4 Mean STN77231 - Algonquin 99.8% 99.6% 99.8% 99.8% 99.8% STN77028 - Coniston 99.6% 98.9% 99.8% 99.8% 99.5% STN77218 - Copper Cliff 99.9% 99.7% 99.7% 96.1% 98.8% STN77228 - Dozzi Park 99.6% 99.7% 99.2% 99.7% 99.6% STN77600 - Edison 99.8% 99.5% 99.8% 98.5% 99.4% STN77065 - Garson 99.8% 99.7% 99.8% 99.8% 99.8% STN77013 - Hanmer 99.5% 98.9% 99.9% 99.8% 99.5% STN77225 - Kelly Lake 99.8% 99.1% 99.6% 98.7% 99.3% STN77227 - Kinsmen 98.1% 98.3% 99.8% 99.7% 99.0% STN77075 - New Sudbury 99.8% 99.7% 99.7% 99.7% 99.7% STN77601 - Parkinson 99.6% 98.9% 99.9% 99.6% 99.5% STN77206 - Rayside 99.6% 99.0% 99.9% 99.7% 99.6% STN77203 - Science North 99.5% 99.3% 99.8% 99.8% 99.6% STN77012 - Skead 99.5% 99.8% 99.6% 99.8% 99.7% STN77230 - Spruce 99.7% 99.6% 99.6% 99.8% 99.7% STN77602 - Sunderland 99.7% 98.4% 99.8% 99.8% 99.4% STN77330 - Union 99.5% 99.7% 99.8% 99.6% 99.6% STN77603 - Wahnapitae 99.8% 99.3% 99.7% 99.7% 99.6% Total Hours: 2160 2184 2208 2208 8760

Page 19 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

3.2 Meteorological Valid Data Collection Performance For the overall annual period, all of the meteorological parameters at STN77025 (CKNC Tower) and Falconbridge MET complied with the 90% valid data collection criteria.

Table 3-2. Meteorological Valid Data Collection Performance at STN77025 and Falconbridge MET

2017 Valid Data Performance (%) Met Parameter Annual Q1 Q2 Q3 Q4 Mean STN77025 - CKNC Tower at Frood Temperature at 12m (T1) 100.0% 100.0% 100.0% 100.0% 100.0% Temperature at 114m (T3) 100.0% 100.0% 100.0% 100.0% 100.0% Delta Temp. (T3 - T1) 100.0% 100.0% 100.0% 100.0% 100.0% Wind Direction at 12m (WD1) 100.0% 100.0% 99.8% 100.0% 100.0% Wind Direction at 114m (WD3) 100.0% 100.0% 100.0% 100.0% 100.0% Wind Speed at 12m (WS1) 98.9% 100.0% 98.6% 100.0% 99.4% Wind Speed at 114m (WS3) 96.1% 100.0% 100.0% 100.0% 99.0% Falconbridge MET -- Met Tower at Falconbridge Temperature at 2m (T1) 100.0% 99.7% 99.5% 100.0% 99.8% Temperature at 60m (T3) 100.0% 99.7% 99.5% 100.0% 99.8% Delta Temp. (T3 - T1) 100.0% 99.7% 99.5% 100.0% 99.8% Wind Direction at 60m (WD1) 99.3% 99.7% 99.5% 100.0% 99.6% Wind Direction at 30m (WDL) NA NA 98.5% 100.0% 99.6% Wind Speed at 60m (WS1) 99.2% 99.7% 99.5% 100.0% 99.6% Wind Speed at 30m (WSL) NA NA 98.5% 100.0% 99.6% Total Hours: 2160 2184 2208 2208 8760

Page 20 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

4 Annual Statistics

This section details the maximum hourly, daily, and annual arithmetic mean SO2 concentrations at each of the eighteen (18) SO2 monitoring stations.

The annual mean is calculated as the mean of twelve (12) monthly means and it requires the collection of 75% valid data (6,570 valid hourly means out of a possible 8,760 hours). A valid monthly mean requires at least twenty-three (23) valid daily means. A valid daily mean requires at least eighteen (18) valid hourly averages out of twenty-four (24) hours as described in the “Operations Manual for Air Quality Monitoring in Ontario” (March, 2008).

For further details regarding the monthly statistics, refer to the four (4) Quarterly Reports, which summarize the monthly SO2 and meteorological data statistics (issued in May 2017, August 2017, October 2017 and February 2018). This section also compares the annual data from 2017 with the annual data from 2016.

4.1 Hourly SO2 Concentrations Overview The maximum hourly average SO2 concentration from January to December 2017 was found to be at STN77218 (Copper Cliff) with a concentration of 418 ppb in July 2017. The second highest maximum hourly SO2 concentration was found at STN77206 (Rayside) with 310 ppb in January 2017. Table 4-1 illustrates the maximum hourly SO2 concentrations at each of the monitoring stations.

Table 4-1. Maximum Hourly SO2 Concentrations – January to December 2017

2017 Maximum Hourly Mean SO2 (ppb) Station Annual Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Max STN77231 - Algonquin 27 30 119 59 56 22 83 70 54 42 96 59 119 STN77028 - Coniston 102 30 44 58 37 64 102 47 63 37 46 72 102 STN77218 - Copper Cliff 72 51 46 54 38 24 418 40 80 66 34 51 418 STN77228 - Dozzi Park 35 65 48 25 29 16 53 69 72 40 110 44 110 STN77600 - Edison 105 71 77 156 84 163 76 146 87 40 26 34 163 STN77065 - Garson 139 65 50 90 113 83 78 66 115 101 33 44 139 STN77013 - Hanmer 95 49 33 35 19 22 29 70 44 62 20 61 95 STN77225 - Kelly Lake 31 26 69 44 103 16 101 71 109 81 26 70 109 STN77227 - Kinsmen 34 48 108 106 116 16 114 28 11 43 11 22 116 STN77075 - New Sudbury 28 36 25 39 38 31 51 28 33 77 27 26 77 STN77601 - Parkinson 98 78 93 87 62 74 138 195 77 275 30 57 275 STN77206 - Rayside 310 18 32 21 44 21 21 29 51 89 30 11 310 STN77203 - Science North 73 30 70 67 32 26 38 48 25 55 155 58 155 STN77012 - Skead 60 120 76 72 84 115 74 63 82 80 98 60 120 STN77230 - Spruce 67 77 75 50 124 27 90 102 50 66 33 48 124 STN77602 - Sunderland 113 118 86 78 176 56 139 105 99 59 62 65 176 STN77330 - Union 86 34 108 57 75 25 36 47 63 36 27 97 108 STN77603 - Wahnapitae 95 52 70 31 52 51 54 21 64 21 52 54 95

Notes: Hourly SO2 Ambient Air Quality Criteria (AAQC) = 250 ppb

Page 21 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

4.2 Maximum Daily SO2 Concentrations The maximum daily average SO2 concentration from January to December 2017 was measured at STN77330 (Union) with a concentration of 39.6 ppb in May 2017. The second highest maximum daily SO2 concentration was found at STN77602 (Sunderland) with 34.6 ppb in May 2017. Table 4-2 illustrates the maximum daily SO2 concentrations at each of the monitoring stations.

Table 4-2. Maximum Daily SO2 Concentrations – January to December 2017

2017 Maximum Daily Mean SO2 (ppb) Station Annual Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Max STN77231 - Algonquin 2.9 1.8 14.5 4.4 9.9 2.3 7.4 7.4 5.3 2.8 9.8 7.6 14.5 STN77028 - Coniston 5.3 2.9 10.8 7.2 8.6 8.5 17.5 6.5 5.5 4.7 4.4 7.5 17.5 STN77218 - Copper Cliff 25.3 14.7 14.9 5.5 17.8 3.6 36.2 12.1 8.1 15.9 4.0 11.5 36.2 STN77228 - Dozzi Park 8.8 6.4 4.9 2.4 7.3 2.0 10.0 5.1 5.7 4.4 6.1 8.6 10.0 STN77600 - Edison 12.9 8.0 10.1 12.4 23.8 23.5 6.6 6.9 5.1 7.2 4.3 4.3 23.8 STN77065 - Garson 11.6 8.6 8.8 17.4 17.3 5.5 12.6 9.2 7.4 10.2 1.8 13.1 17.4 STN77013 - Hanmer 10.5 5.0 5.9 8.9 4.1 2.1 3.2 3.9 8.2 8.0 2.8 3.3 10.5 STN77225 - Kelly Lake 3.8 4.5 8.4 4.6 11.1 2.1 9.9 5.6 6.0 5.0 3.8 8.7 11.1 STN77227 - Kinsmen 6.3 5.3 16.3 13.8 18.7 3.3 12.4 5.2 1.9 4.8 1.3 2.5 18.7 STN77075 - New Sudbury 5.2 3.7 2.0 6.5 2.4 3.1 5.5 1.8 2.7 7.9 2.0 2.3 7.9 STN77601 - Parkinson 10.4 12.8 19.5 16.9 16.9 9.0 15.8 26.3 7.0 18.2 4.5 6.0 26.3 STN77206 - Rayside 30.3 2.1 3.8 2.4 6.0 2.0 3.7 3.3 8.2 6.2 3.1 1.8 30.3 STN77203 - Science North 9.9 4.3 7.3 5.6 8.3 2.3 7.1 6.3 3.5 7.7 8.2 7.5 9.9 STN77012 - Skead 8.7 12.6 11.3 10.3 10.0 17.2 15.2 5.1 16.4 18.2 29.7 8.0 29.7 STN77230 - Spruce 9.5 17.8 4.7 6.1 9.4 4.2 9.8 10.8 5.3 7.8 3.9 9.6 17.8 STN77602 - Sunderland 19.3 10.5 13.9 6.0 34.6 5.1 10.7 10.7 9.0 3.8 12.3 7.5 34.6 STN77330 - Union 25.7 8.6 25.4 10.8 39.6 3.5 13.8 9.8 7.2 10.6 6.6 9.5 39.6 STN77603 - Wahnapitae 4.7 9.3 9.2 2.6 6.0 4.6 5.4 3.2 5.4 2.9 8.9 2.9 9.3

Notes: Daily SO2 Ambient Air Quality Criteria (AAQC) = 100 ppb

Page 22 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

4.3 Summary of Measured SO2 Concentrations Above AAQC During the period of January to December 2017, there were a total of five (5) hourly measured SO2 concentrations above the hourly AAQC of 250 ppb. There were no measured SO2 concentrations above the daily AAQC limit of 100 ppb. Table 4-3 lists the total measured SO2 concentrations above the hourly and daily AAQC limits for the reporting period.

Table 4-3. SO2 Measured Concentrations above AAQC

Q1 Q2 Q3 Q4 Total Station Hourly Daily Hourly Daily Hourly Daily Hourly Daily Hourly Daily STN77231 - Algonquin 0 0 0 0 0 0 0 0 0 0 STN77028 - Coniston 0 0 0 0 0 0 0 0 0 0 STN77218 - Copper Cliff 0 0 0 0 3 0 0 0 3 0 STN77228 - Dozzi Park 0 0 0 0 0 0 0 0 0 0 STN77600 - Edison 0 0 0 0 0 0 0 0 0 0 STN77065 - Garson 0 0 0 0 0 0 0 0 0 0 STN77013 - Hanmer 0 0 0 0 0 0 0 0 0 0 STN77225 - Kelly Lake 0 0 0 0 0 0 0 0 0 0 STN77227 - Kinsmen 0 0 0 0 0 0 0 0 0 0 STN77075 - New Sudbury 0 0 0 0 0 0 0 0 0 0 STN77601 - Parkinson 0 0 0 0 0 0 1 0 1 0 STN77206 - Rayside 1 0 0 0 0 0 0 0 1 0 STN77203 - Science North 0 0 0 0 0 0 0 0 0 0 STN77012 - Skead 0 0 0 0 0 0 0 0 0 0 STN77230 - Spruce 0 0 0 0 0 0 0 0 0 0 STN77602 - Sunderland 0 0 0 0 0 0 0 0 0 0 STN77330 - Union 0 0 0 0 0 0 0 0 0 0 STN77603 - Wahnapitae 0 0 0 0 0 0 0 0 0 0 Total # of Measured SO2 1 0 0 0 3 0 1 0 5 0 Concentrations above AAQC

Notes: 1-hr AAQC for SO2 = 250 ppb 24-hr AAQC for SO2 = 100 ppb

Page 23 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

4.4 Source Contribution Assessment for Measured SO2 Concentrations Above AAQC As per the Operations Manual, each of the measured SO2 concentrations above the AAQC is to be evaluated by wind speed and wind direction data for source contribution assessment. There were a total of five (5) measured SO2 concentrations above the hourly AAQC limit in 2017.

Table 4-4 presents the date and hour of the measured SO2 concentrations above the hourly AAQC limit, the station where it was measured and the corresponding wind speed and direction data for this assessment. The table also identifies the potential SO2 source, solely based on the hourly wind direction measured at the closest meteorological station and the assumption that the Vale Smelter and Glencore Smelter are the major sources of SO2. The Vale Nickel Refinery is typically a low SO2 emitter but under exceptional meteorological events may also contribute as a source if SO2 emissions are trapped under a low inversion.

The location of STN77025 (CKNC Tower) provides MET data that is closer in proximity (within five (5) kilometres) to the Vale Smelter site. The Glencore site is located approximately seventeen (17) kilometres from CKNC MET station (STN77025). The Falconbridge MET station (Falconbridge MET) is located on the Glencore site, northwest of the smelter. It is approximately twenty- one (21) kilometres from the Vale Smelter. The Vale Nickel Refinery is located approximately four and a half (4.5) kilometres southwest of the Vale Smelter.

A map showing the location of Vale Smelter and Nickel Refinery, Glencore Smelter and the monitoring stations is presented in Appendix C.

Table 4-4. Source Contribution Assessment for the Measured SO2 Concentrations above the Hourly AAQC

MET Data SO2 Potential Closest MET WS1-12m WD1-12m WS3-114m WD3-114m Station Date Time Concentration Upwind Station or or or or (ppb) WSL-30m WDL-30m WS1-60m WD1-60m SO2 Source (km/hr) (deg.) (km/hr) (deg.) STN77206 10:00 to Vale Nickel 20-Jan 310 CKNC Tower 7 148 8 146 Rayside 11:00 Refinery STN77218 22:00 to Vale Copper 22-Jul 257 CKNC Tower 14 42 30 40 23:00 Smelter Cliff STN77218 23:00 to Vale Copper 22-Jul 328 CKNC Tower 14 44 29 39 24:00 Smelter Cliff STN77218 02:00 to Vale Copper 23-Jul 418 CKNC Tower 10 50 24 68 03:00 Smelter Cliff STN77601 04:00 to Glencore 12-Oct 275 Falconbridge 21 78 33 90 Parkinson 05:00 Smelter

Page 24 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

4.5 Annual SO2 Average Concentrations Overview The monthly average and resulting annual arithmetic mean SO2 concentration in 2017 for each monitoring station are summarized in Table 4-5. The annual average value is calculated by dividing the sum of the valid monthly mean SO2 concentrations for each station by the total number of valid months in the year.

The maximum annual mean SO2 concentration (2.3 ppb) occurred at STN77601 (Parkinson). The annual AAQC for SO2 is 20 ppb. Overall, the annual arithmetic means ranged from 0.6 to 2.3 ppb as illustrated in Table 4-5.

Table 4-5. Annual Mean SO2 Concentrations – January to December 2017

2017 Monthly Hourly Arithmetic Mean SO2 (ppb) Station Annual Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Mean

STN77231 - Algonquin 0.7 0.5 2.1 0.7 1.1 0.3 1.4 1.0 0.4 0.4 1.1 0.8 0.9 STN77028 - Coniston 0.8 0.4 1.8 1.6 1.2 2.1 3.2 1.6 0.5 0.9 0.7 0.7 1.3 STN77218 - Copper Cliff 2.3 1.2 1.8 1.5 2.3 0.4 4.5 1.5 2.5 1.8 0.8 1.7 1.9 STN77228 - Dozzi Park 1.3 1.3 1.2 0.6 0.9 0.5 2.0 1.7 1.4 1.4 1.5 1.4 1.3 STN77600 - Edison 2.8 1.0 1.4 1.7 1.9 1.8 1.5 1.8 0.8 1.0 0.7 0.9 1.4 STN77065 - Garson 1.9 1.3 1.1 2.1 2.2 1.0 3.0 2.0 1.2 1.4 0.2 1.1 1.5 STN77013 - Hanmer 1.6 1.7 1.4 1.2 1.1 0.8 0.2 0.4 0.8 0.9 0.6 0.3 0.9 STN77225 - Kelly Lake 0.4 0.6 1.4 0.6 0.8 0.5 1.7 1.0 0.7 0.8 0.7 0.6 0.8 STN77227 - Kinsmen 0.4 0.4 1.6 1.7 2.2 0.7 3.3 0.5 0.7 0.5 0.2 0.5 1.1 STN77075 - New Sudbury 1.3 1.9 0.2 0.4 0.5 0.2 0.8 0.3 0.3 0.5 0.1 0.2 0.6 STN77601 - Parkinson 2.0 1.8 2.9 4.2 2.4 2.3 3.8 3.1 1.2 2.7 0.4 1.3 2.3 STN77206 - Rayside 1.6 0.4 0.6 0.4 1.0 0.4 0.3 0.6 0.5 0.7 0.4 0.2 0.6 STN77203 - Science North 1.4 1.0 1.2 0.6 0.8 0.4 1.4 1.0 0.5 0.9 1.3 1.0 1.0 STN77012 - Skead 1.2 1.9 1.6 1.2 2.2 1.8 1.3 0.9 1.7 3.4 2.2 1.1 1.7 STN77230 - Spruce 2.0 2.9 0.8 1.2 1.7 0.4 1.8 2.0 1.3 1.7 0.9 1.6 1.5 STN77602 - Sunderland 2.7 1.2 2.4 1.1 2.5 0.9 1.1 1.2 1.2 0.7 0.7 0.9 1.4 STN77330 - Union 3.7 1.9 3.1 2.3 3.5 0.5 2.0 2.3 2.2 2.0 1.6 1.7 2.2 STN77603 - Wahnapitae 0.7 0.8 1.3 0.5 0.6 0.3 0.8 0.4 0.6 0.4 1.3 0.5 0.7

Note: Annual AAQC for SO2 = 20 ppb A valid monthly mean requires at least twenty-three (23) valid daily means.

Page 25 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

The annual average SO2 concentrations for each station are below the annual AAQC of 20 ppb as depicted in Figure 4-1.

Figure 4-1. Annual Mean SO2 Concentration – January to December 2017

25

20

15

10 2017 Annual Arithmetic Mean (ppb) Average Concentration (ppb) Average 2 Annual AAQC (ppb) 5

Annual SO 0

Station ID

Page 26 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

5 Annual SO2 Results Comparison

This section compares the monthly SO2 average concentrations from January to December 2017 (2017 data) versus January to December 2016 (2016 data). Figure 5-1 presents a graphical comparison.

Overall, the 2017 SO2 annual average concentrations are remarkably lower than concentrations recorded in 2016. All of the eighteen monitoring stations had annual average SO2 concentrations decrease from the previous year.

A comparison of each monitoring stations’ annual arithmetic means for the previous annual reporting period (January to December 2016) and this reporting period (January to December 2017) is shown in Table 5-1.

Table 5-1. Average Annual SO2 Concentrations for 2016 and 2017

2016 Annual 2017 Annual Station SO2 Average SO2 Average Concentration Concentration Difference (ppb) (ppb) (ppb) STN77231 - Algonquin 1.72 0.87 -0.85 STN77028 - Coniston 1.97 1.30 -0.67 STN77218 - Copper Cliff 3.53 1.88 -1.65 STN77228 - Dozzi Park 1.56 1.26 -0.30 STN77600 - Edison 1.90 1.45 -0.45 STN77065 - Garson 1.68 1.53 -0.15 STN77013 - Hanmer 0.98 0.91 -0.07 STN77225 - Kelly Lake 1.93 0.82 -1.11 STN77227 - Kinsmen 1.17 1.07 -0.10 STN77075 - New Sudbury 1.20 0.56 -0.64 STN77601 - Parkinson 3.17 2.35 -0.82 STN77206 - Rayside 0.67 0.60 -0.07 STN77203 - Science North 2.27 0.97 -1.30 STN77012 - Skead 2.84 1.69 -1.15 STN77230 - Spruce 2.43 1.52 -0.91 STN77602 - Sunderland 1.78 1.38 -0.40 STN77330 - Union 3.12 2.24 -0.88 STN77603 - Wahnapitae 1.64 0.69 -0.95

Notes: Annual AAQC = 20 ppb

The maximum annual arithmetic mean SO2 concentration in 2017 was 2.35 ppb that occurred at STN77601 (Parkinson). Overall, the annual average SO2 concentrations ranged from 0.56 to 2.35 ppb in 2017.

The maximum annual arithmetic mean SO2 concentration in 2016 was 3.53 ppb that occurred at STN77218 (Copper Cliff). Overall, the annual average SO2 concentrations ranged from 0.67 to 3.53 ppb in 2016.

Page 27 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Figure 5-1. Annual Mean SO2 Concentrations Comparison

25

20

15

2016 Annual Arithmetic Mean (ppb)

10 2017 Annual Arithmetic Mean (ppb)

Annual AAQC (ppb)

Average Concentration (ppb) Average 5 2

0 Annual SO

Station ID

As illustrated in Figure 5-1, the average annual SO2 concentrations were lower at all eighteen (18) stations in 2017, in comparison to 2016.

The SO2 average annual concentration in 2017 was 1.28 ppb that is remarkably lower than the 2016 annual average (1.98 ppb). The largest decrease was seen at STN77218 (Copper Cliff) with a 1.65 ppb decrease from 2016 to 2017.

Page 28 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

6 References

Ministry of the Environment. Operations Division –Technical Support Section. “Operations Manual for Air Quality Monitoring in Ontario”. March, 2008.

Ministry of the Environment. Operations Division –Technical Support Section. “Operations Manual for Air Quality Monitoring in Ontario”. February, 2018

/ Glencore Limited: 2017 First Quarterly Report, SO2 Monitoring Network for Sudbury, January, February & March 2017”. May 2017.

“Vale Limited / Glencore Limited: 2017 Second Quarterly Report, SO2 Monitoring Network for Sudbury, April, May & June 2017”. August 2017.

“Vale Limited / Glencore Limited: 2017 Third Quarterly Report, SO2 Monitoring Network for Sudbury, July, August & September 2017”. October 2017.

“Vale Limited / Glencore Limited: 2017 Fourth Quarterly Report, SO2 Monitoring Network for Sudbury, October, November & December 2017”. February 2018.

Page 29 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Appendix A Equipment Inventory

Vale and Glencore Asset List as of January 2017

VALE ASSETS

Station 77025 - CKNC Met Tower Equipment Serial Number Make Model Quantity Comments/Install Date Aerovane, WS WD 81623, 80254 R.M Young 05103 VK 2 November 2013 Meteorological tower n/a n/a n/a 1 Owned by CKNC Met. Temperature sen. 11671, 11672 R.M Young 41342VC 2 November 2013 Modem 2ABLX9LF3283 US Robotics 5686 1 2006 UPS n/a n/a n/a n/a No UPS Heating/cooling syst n/a n/a n/a n/a No A/C, Heated by CKNC PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Shelter n/a n/a n/a n/a Rented from CKNC High Speed Modem 166958826410697201012100 Motorola BEFSR41 1 ----- Router DIR-819 D-Link DIR-819 1 -----

Station 77075 - New Sudbury Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1333159842 Thermo Scientific 43i 1 December 2013 Modem 2ABLYACE052 US Robotics 5686 1 2006 UPS 17048000569AFBA3 Liebert GXT4-1500RT120 1 November 2017 Heating/cooling syst n/a n/a n/a n/a No A/C, Heated by Cambrian Shelter n/a n/a n/a n/a Cambrian Fire extinguisher VU556393 Kidde P340ABC-VB-2 1 ----- PLC Assembly n/a Alan Bradley Compactlogix 1 2006 Indoor temp. sensor n/a Veris TEAJS 1 January 2014 High Speed Modem 1215062XXF-AA002703 Comtrend DSL 1 November 2015 Router C2161G117274 Linksys BEFSR41 1 -----

Vale Sudbury INO AQM Asset List_2017.xls Page A-2 Station 77203 - Science North Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0905535060 Thermo Scientific 43i 1 Vale spare July 2013 Modem 2ABLX9LF5437 US Robotics 5686 1 2006 UPS 17048000570AFBA3 Liebert GXT4-1500RT120 1 November 2017 Heating/cooling syst n/a n/a n/a n/a Supplied by Science North Shelter n/a n/a n/a n/a Science North Fire extinguisher n/a n/a n/a n/a Science North PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Glass Manifold n/a n/a n/a 1 Inlet glass manifold Indoor temp. sensor n/a Omega TAC80B-T 1 ----- High Speed Modem 150758629304107401013031 Motorola SBS101 1 Cable Modem Router C2171G425671 Linksys BEFSR41 1 -----

Station 77206 - Rayside Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 818330854 Thermo Scientific 43i 1 September 2008 Modem 2ABLX9LF3285 US Robotics 5686 1 2006 UPS 1711400388AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling system 1265900511129150400 Heat Controller, Inc. RAD-123H 1 May 2013 Heating System n/a Dimplex 6010012300 2 2 baseboard heaters Shelter n/a n/a n/a 1 2008 Fire extinguisher H651079C General C-TCP-5J 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a Veris TEAJS 1 November 2013 High Speed Modem 16695826410718401012100 Motorolla SB5101 1 Cable Modem Router n/a Linksys BEFSR41 1 February 2015 Thermostat n/a Honeywell n/a 1 Digital

Vale Sudbury INO AQM Asset List_2017.xls Page A-3 Station 77218 - Copper Cliff Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1333159844 Thermo Scientific 43i 1 December 2013 Modem 2ABLX9LF3284 US Robotics 5686 1 2006 UPS 1710700571AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System n/a Whirlpool n/a 1 April 2015 Heating System n/a Dimplex 6010012300 2 2 baseboard heaters Thermostat n/a Honeywell n/a 1 Digital thermostat Shelter 0906-01 Rotek AMS-812 1 2006 Fire extinguisher VU-556395 Kidde P340ABC-VB-2 1 2007 PLC Assembly n/a Allen Bradley Compactlogix 1 2008 Indoor temp. sensor n/a AMPROBE TMA-1 1 From old Copper Cliff station High Speed Modem 14005861250139560203301 Motorola SBS101 1 Cable Modem Router 1 C2171G452636 Linksys BEFSR41 1 ----- Router 2 P1NK192000156 Dlink DI-604UP 1 ----- Ethernet Switch DR87394000370 Dlink DSS-5+ 1 5 port 10/100 ethernet switch

Station 77225 - Kelly Lake Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 4-58476-31 Teco 43c 1 November 2015 Modem 2ABLX9LF5436 US Robotics 5686 1 ----- UPS 1704800619AFBA3 Liebert GXT4-1500RT120 1 November 2017 Large UPS PPY8X2000002 CyberPower PR1000LCDTXL2Ua 1 September 2015 Cooling System 904TA00250 Comfort Aire RAD-183B 1 ----- Heating System n/a Dimplex n/a 2 ----- Shelter n/a Rotek n/a 1 July 2009 Fire extinguisher VU-556394 Kidde P340ABC-VB-2 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a Veris TEAJS 1 September 2012 High Speed Modem JCIEA3700037V Superlink SL2800 1 Cable Modem Router n/a Linksys BEFSR41 1 January 2015 Thermostat n/a Honeywell n/a 1 Digital

Vale Sudbury INO AQM Asset List_2017.xls Page A-4 Station 77227 - Kinsmen Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0806027502 Thermo Scientific 43i 1 March 2015 Vacuum pump n/a n/a n/a 1 ----- Modem 2ABLX9LF3281 US Robotics 5686 1 2006 UPS 1710700572AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System 0808VV00162 Carrier KCA018301P 1 ----- Heating System n/a Dimplex 6010010300 2 ----- Shelter n/a n/a n/a 1 December 2009 Fire extinguisher VP-473315 Kidde P340ABC-VB-2 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a AMPROBE TMA-1 1 ----- High Speed Modem 314158918615984101011001 Motorola SB5101U 1 Cable Modem Router n/a Linksys BEFSR41 1 November 2014 Thermostat n/a Honeywell (digital) n/a 1 -----

Station 77228 - Dozzi Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1215853081 Thermo Scientific 43i 1 Vale spare March 2013 Modem 2ABLY1VF0463 US Robotics Sportster 33.6 1 ----- UPS 1704800621AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System EU158523130Y Comfort Aire n/a 1 ----- Heating System n/a Dimplex 6010012300 2 2007 Shelter 0307-04 ROTECK AMS812 1 2007 Fire extinguisher VU-556396 Kidde P340ABC-VB-2 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 2007 Barometer BP 02734 RM Young 61205V 1 2005 Indoor temp. sensor n/a AMPROBE TMA-1 1 ----- High Speed Modem 140058529215802602031001 Motorola SBS101 1 Cable Modem Router n/a Linksys BEFSR41 1 Feb-15 Thermostat n/a Honeywell (digital) n/a 1 -----

Vale Sudbury INO AQM Asset List_2017.xls Page A-5 Station 77230 - Spruce Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0615817071 Thermo Scientific 43i 1 December 2006 Modem 2ABLX9LF3282 US Robotics 5686 1 2006 UPS 1704800589AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System BU199709043Y Comfortaire CA1826ER-A 1 ----- Heating System n/a Dimplex 6010012300 2 ----- Shelter 0906-02 Rotek AMS-812 1 ----- Fire extinguisher n/a Kidde P340ABC-VB-2 1 May 2015 PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a AMPROBE TMA-1 1 ------High Speed Modem 314750002807604701011008 Motorola SB5101N 1 Cable Modem Router n/a Linksys BEFSR41 1 January 2015 Thermostat n/a Honeywell n/a 1 Digital

Station 77231 - Algonquin Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1333159843 Thermo Scientific 43i 1 December 2013 Modem 2ABLY1VF0756 US Robotics Sportster 33.6 1 ----- UPS 1711400379AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System 1265900511130150397 Comfortaire RAD-123H 1 ----- Heating System n/a Dimplex 6010012300 2 2007 Shelter 0307-05 ROTECK AMS58 1 2007 Fire extinguisher VU-974358 Kidde P340ABC-VB-2 1 2007 PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor 06021774 Tsentry Model 140 1 Serial number under velcro High Speed Modem 140058706239990502039001 Motorola SBS101 1 Cable Modem Router n/a Linksys BEFSR41 1 February 2015 Thermostat n/a Honeywell n/a 1 Digital

Vale Sudbury INO AQM Asset List_2017.xls Page A-6 Station 77330 - Union Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0710321459 Thermo Scientific 43i 1 November 2012 Modem 2ABLY1VF0439 US Robotics Sportster 33.6 1 November 2012 UPS 1711400379AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System 904TA0000067 Comfort Aire RAD-183B 1 November 2012 Heating System n/a Dimplex 6010012300 2 November 2012 Shelter n/a Rotek AMS-812 1 November 2012 Fire extinguisher VU-556396 Kidde P340ABC-VB-2 1 November 2012 PLC Assembly n/a Allen Bradley Compactlogix 1 November 2012 Indoor temp. sensor n/a Veris TEAJS 1 November 2012 High Speed Modem 355581219901000702010017 Motorola SBG6580 1 November 2012 Router 10820C64212303 Linksys E1200 1 November 2012 Thermostat n/a Ouellet (digital) n/a 1 November 2012

GLENCORE ASSETS

Station 77012 - Skead Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1026444319 Thermo Scientific 43i 1 Subury INO spare 2013 Modem 2ABLYAQF0562 US Robotics 5686 1 2006 Small UPS n/a n/a n/a 1 Removed 2017 Large UPS 1710700573AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System EU158204130Y Climette CA1826ER-A 1 October 2007 Heating System n/a Dimplex 6010012300 2 October 2007 Shelter 1007-07 ROTECK AMS812 1 October 2007 Fire extinguisher H651070C General C-TCP-5J 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a AMPROBE TMA-1 1 209.91.183.166 High Speed Modem 12A5062XXXF-AA004977 Comtrend DSL 1 November 2015 Router C572B016758 Linksys BEFSR41 1 ----- Thermostat n/a Stelpro SWT1C 1 Solid State/December 2017

Vale Sudbury INO AQM Asset List_2017.xls Page A-7 Station 77013 - Hanmer Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 700319945 Thermo Scientific 43i 1 December 2006 Modem 2ABLY9GE3698 US Robotics 5686 1 December 2006 Small UPS n/a n/a n/a 1 Removed 2017 Large UPS 1711400380AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System EU158532130Y Climette CA1826ER-A 1 December 2006 Heating System n/a Dimplex 6010012300 2 December 2006 Shelter 1206-03 ROTECK AMS812 1 December 2006 Fire extinguisher YW-971218 Ansul Sentry A05 1 December 2006 PLC Assembly n/a Allen Bradley Compactlogix 1 Transferred to new shelter Indoor temp. sensor n/a Veris TEAJS 1 May 2014 High Speed Modem 140058701949675602039001 Motorola SBS101 1 Cable Modem Router n/a Linksys BEFSR41 1 February 2015 Thermostat n/a Stelpro SWT1C 1 Solid State/December 2017

Station 77028 - Coniston Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0806027499 Thermo Scientific 43i 1 Spare October 2013 Modem 2ABLYACE1061 US Robotics 5686 1 2006 Small UPS 380535X10177 APC BE750BB-CN 1 750 VA UPS Large UPS 1711400387AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System 11635808101061592 Comfort Aire RADS-101G 1 ----- Heating System n/a n/a n/a 2 Unmarked baseboard heaters Thermostat n/a Ouellet n/a 1 Digital Shelter n/a Pacwill n/a 1 September 2010 Fire extinguisher H651059C General C-TCP-5J 1 Serviced yearly PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a AMPROBE TMA-1 1 ----- High Speed Modem 140058523033867101021001 Motorola SBS101 1 Cable Modem Router n/a Linksys BEFSR41 1 February 2015

Vale Sudbury INO AQM Asset List_2017.xls Page A-8 Station 77065 - Garson Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1018243126 Thermo Scientific 43i 1 September 2010 Modem 2ABLYATE0749 US Robotics 5686 1 2006 Small UPS 3B1208X10974 APC BE750G 1 August 2012 Large UPS 1711400381AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling System 1163580810106151593 Comfort Aire RADS101G 1 ----- Heating System n/a n/a n/a 2 Unmarked baseboard heaters Thermostat n/a Ouellet n/a 1 Digital Shelter n/a Pacwill n/a 1 September 2010 Fire extinguisher L441052C General C-TCP-5JH 1 Serviced yearly PLC Assembly n/a Allen Bradley Compactlogix 1 2006 Indoor temp. sensor n/a Veris TEAJS 1 February 2013 High Speed Modem 355581203414764659550017 Motorola SBG6580 1 Cable Modem Router C2171G425666 Linksys BEFSR41 1 -----

Station 77600 - Edison Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0826632106 Thermo Scientific 43i 1 December 2014 Modem 2ABLYX9LF7981 US Robotics 5686 1 2006 Small UPS 3B0746X71371 APC BE750G-CN 1 750 VA Large UPS 1711400382AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling/Heating System F08F02571E Trane PTEE1501UA8A 1 ----- Shelter n/a n/a n/a 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 April 2008 Indoor temp. sensor 08016898 Tsentry 140-100HV 1 April 2008 High Speed Modem 073G4FX1TDN9 Motorola SB5101 1 Cable Modem Router C2181H3122 Linksys BEFSR41 1 -----

Vale Sudbury INO AQM Asset List_2017.xls Page A-9 Station 77601 - Parkinson Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0806027503 Thermo Scientific 43i 1 November 2015 Modem 3ABLY2213320 US Robotics 5686 1 2006 Small UPS 3B0746X67850 APC BE750G-CN 1 750 VA Large UPS 1 1711400382AFBA3 Liebert GXT4-1500RT120 1 November 2017 Large UPS 2 n/a EATON 9130 1 3000VA Cooling/Heating System F05W00481A Trane PTED1C0JCA 1 ----- Shelter n/a n/a n/a 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 April 2008 Indoor temp. sensor 08016899 Tsentry 140-100HV 1 April 2008 High Speed Modem 073G4FX1TF66 Motorola SB5101 1 Cable Modem Thermostat n/a Honeywell n/a 1 Analog Router C2181H312199 Linksys BEFSR41 1 -----

Station 77602 - Sunderland Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 1218153498 Thermo Scientific 43i 1 March 2015 Modem 2ABLYCLD2726 US Robotics 5686 1 2006 Small UPS 3B0746X73814 APC BE750G-CN 1 750 VA Large UPS 1704800590AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling/Heating System A98C02965 Trane PTEC1501GCA 1 ----- Shelter n/a Pacwill n/a 1 May 2010 PLC Assembly n/a Allen Bradley Compactlogix 1 April 2008 Indoor temp. sensor 08016901 Tsentry 140-100HV 1 April 2008 High Speed Modem 073G4FX1W852 Motorola SB5101 1 Cable Modem Thermostat n/a Honeywell n/a 1 Digital Router C2181H312289 Linksys BEFSR41 1 -----

Vale Sudbury INO AQM Asset List_2017.xls Page A-10 Station 77603 - Wahnapitae Equipment Serial Number Make Model Quantity Comments/Install Date Analyzer 0806027500 Thermo Scientific 43i 1 May 2015 Modem 3ABLYCJH4747 US Robotics 5686 1 2006 Small UPS 3B1229X21248 APC BE750G-CN 1 October 2013 Large UPS 1704800593AFBA3 Liebert GXT4-1500RT120 1 November 2017 Cooling/Heating System A01B00485 Trane PTEC1501GCA 1 ----- Shelter n/a n/a n/a 1 ----- PLC Assembly n/a Allen Bradley Compactlogix 1 April 2008 Indoor temp. sensor 08016900 Tsentry 140-100HV 1 April 2008 High Speed Modem 073G4FSGN8X3 Motorola SB5101 1 Cable Modem Router C2181H312267 Linksys BEFSR41 1 -----

Station - Falconbridge Met Tower Equipment Serial Number Make Model Quantity Comments/Install Date Ultrasonic, WS WD n/a R.M Young 85004 1 October 2014 Meteorological tower n/a n/a n/a 1 ----- Met. Temperature sen. n/a R.M Young 41382VC 2 June 2008 Solar radiometer na Kipp & Zonen SP lite 1 June 2008 Modem 2ABLY7SG2073 US Robotics 5686 1 June 2008 UPS 5B0751T59507 APC BE650R-CN 1 March 2009 Cooling/Heating System n/a Trane n/a n/a ----- PLC Assembly n/a Allen Bradley Compactlogix 1 June 2008 Shelter n/a n/a n/a 1 ----- High Speed Modem n/a n/a n/a n/a No high speed Router C2181H312214 Linksys BEFSR41 1 -----

Vale Sudbury INO AQM Asset List_2017.xls Page A-11 BESTECH OFFICE AQM Spare Parts January 2017

Thermo Scientific 43i and 43c Parts PART NUMBER DESCRIPTION QTY Manufacturer 4119 Capillaries 0.008" ID (Red) 6 Thermo Scientific 8919 Capillaries 0.013" ID (Blue/yellow) 6 Thermo Scientific 4800 Capillary O-ring 30 Thermo Scientific 102029-00 Perm Oven Thermistor 2 Thermo Scientific 204668 Round Pump Rebuild Kit 7 Thermo Scientific 112021-00 Shock Bumper Kit 9 Thermo Scientific 8606 Square Pump Rebuild kit 5 Thermo Scientific 102888-00 Terminal Board PCB Assembly (DB37F) 2 Thermo Scientific 102891-00 Terminal Board PCB Assembly (DB37M) 1 Thermo Scientific 100533-00 Motherboard Assembly 3 Thermo Scientific 100862-00 Measurement Interface Board Assembly 2 Thermo Scientific 8666 Flashtube Lamp 3 Thermo Scientific 8888 Mirror Housing Assem 3 Thermo Scientific 8884 Flash Intensity (Photocell) Assembly 2 Thermo Scientific 1784CF128A PLC Compact Flash Card 4 Thermo Scientific T050A047A PTFE Inlet Filter 50 Thermo Scientific 101035-00 DC input to motherboard cable 1 Thermo Scientific Inlet Filter Housing 1 Thermo Scientific 101267-00 Fan power cable 0 Thermo Scientific 11553-01 Replacement Pump 2 Thermo Scientific 101390-00 TECO valve 1 Thermo Scientific 4158 Activated Charcoal Zero Scrubber 2 Thermo Scientific Inlet Filter Wrench 8 Thermo Scientific 8774 Socket Assembly 3 Thermo Scientific 101411-00 Perm Oven Assembly 3 Thermo Scientific 8746 Kicker Assembly 1 Thermo Scientific 101023-00 Pressure Transducer Assembly 0 Thermo Scientific 102029-01 Thermister & Cap Assembly 2 Thermo Scientific 102055-00 Flow Transducer 2 Thermo Scientific 4291 Zero Scrubber Assembly 1 Thermo Scientific Permeation Wafer 5 Thermo Scientific Teco 43i Teco 43i S/N 0710321460 1 Thermo Scientific Teco 43c Teco 43c S/N 515812182 1 Thermo Scientific Teco 43c Teco 43c S/N 4-58476-316 0 Thermo Scientific Teco 43c Teco 43c S/N 4-58475-318 1 Thermo Scientific

Vale Sudbury INO AQM Asset List_2017.xls Page A-12 Calibration Equipment PART NUMBER DESCRIPTION QTY Manufacturer 2020-5143 Pump Rebuild Kit, Sabio 2020 0 Sabio Instruments 2020-3618 Sabio Inlet Filter, 2020 0 Sabio Instruments 2020-2540 Sabio PCB fuse, 4 amp 0 Sabio Instruments 2020-2536 Sabio PCB fuse, 1 amp 0 Sabio Instruments 2020-2541 Sabio PCB fuse, 6.3 amp 0 Sabio Instruments 2020-2105 Sabio Charcoal 2 Sabio Instruments 50106 Sabio Valve 2 Sabio Instruments DIF-BN Inline Filter 10 Gasmet Ansyco Graphite Vanes for pump 4 Gasmet Ansyco 172019 Rotary Vane pump KT 1 Fergut 56754 Rotary Vane Pump KT/14 1 Fergut Absorber for Front Panel 1 Gasmet Ansyco Filer pad D40 4 Gasmet Ansyco Filer pad D60 2 Gasmet Ansyco

Met Equipment PART NUMBER DESCRIPTION QTY Manufacturer 41382VC RH and Temp Sensor S/N 028565 2 R.M Young 41342VC RH and Temp Sensor S/N 11671 1 R.M Young SP Lite 2 Pyranometer S/N 162144, 162145, 162146, 090960 3 Kipp & Zonen 05103V Wind Monitor S/N 149110, 149112, 81623 3 R.M Young

R.M. Young Rain Gauge PART NUMBER DESCRIPTION QTY Manufacturer 52224-01 Bearing Bracket 1 R.M. Young 52226 Switch Bracket Assembly 1 R.M. Young 5222 Bucket and Pivot 1 R.M. Young 52224-04 Bearing 1 R.M. Young

Vale Mobile Equipment PART NUMBER DESCRIPTION QTY Manufacturer 19N042587 Mobile GPS 0 Garmin 16001784 Battery Separator 0 Sure Power 8437402 12/24V Battery Master Switch 1 Power Fist 2866747 DC/ AC Quint Power supply 1 Quint Power Young Temperature Sensor 1 Young --- Stand for solar raydiometer 1 ---

Vale Sudbury INO AQM Asset List_2017.xls Page A-13 Other AQM Station Equipment PART NUMBER DESCRIPTION QTY Manufacturer 96000-02 Tubing 1/8" 20 ft Saint Gobain ACQ108PW Air Conditioner S/N MQA1LSB0438 1 Whirlpool ----- APC Backup UPS 750VAC 3 APC Schneider Electric ----- Honeywell Backup Station Heater 1 ------Wall Mount Temperature Transmitter 1 TEAJS ----- 24V 3.5A Power Supply S/N 140958 1 Pneonix Contact 1769-ECR Compact I/O 1 Allen Bradley ----- Compact Logix L35E 1 Allen Bradley 1606-XLP Power Supply 1 Allen Bradley

Vale Sudbury INO AQM Asset List_2017.xls Page A-14 Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Appendix B Summary of Site Visits and Lists of Problems

Data Editing for January 2017

The following are the flagged conditions for each station for January 2017.

Vale Sites

Algonquin 77231 January 10, 2017: Maintenance and monthly calibration from 14:13 – 15:14. 1 invalid hour(s).

Copper Cliff 77218 January 27, 2017: Monthly calibration from 13:45 – 14:53. 1 invalid hour(s).

Dozzi Park 77228 January 13, 2017: Monthly calibration from 11:00 – 12:20. 2 invalid hour(s). January 24, 2017: Calibration verification from 13:45 – 14:55. 1 invalid hour(s).

Kelly Lake 77225 January 27, 2017: Monthly calibration from 16:03 – 17:13. 1 invalid hour(s).

Kinsmen 77227 January 4, 2017: Servicing and monthly calibration from 10:49 – 13:51. 3 invalid hour(s). January 11, 2017: Servicing and calibration verification from 10:28 – 12:39. 3 invalid hour(s).

New Sudbury 77075 January 31, 2017: Monthly calibration from 9:59 – 11:16. 2 invalid hour(s).

Rayside 77206 January 20, 2017: Monthly calibration from 14:46 – 16:04. 1 invalid hour(s).

Science North 77203 January 3, 2017: Maintenance and monthly calibration from 13:19 – 15:06. 2 invalid hour(s). January 11, 2017: Calibration verification from 13:31 – 14:53. 2 invalid hour(s). January 14, 2017: Power outage from 6:47 – 7:38, 11:36 – 11:40 and 17:29 – 17:31. 1 invalid hour(s). January 23, 2017: Power outage from 6:01 – 7:05. 1 invalid hour(s).

Spruce St 77230 January 30, 2017: Monthly calibration from 13:26 – 14:40. 2 invalid hour(s).

Union 77330 January 18, 2017: Monthly calibration from 11:32 – 13:34. 3 invalid hour(s).

CKNC Met

DT2 Nothing to report TEM1 Nothing to report A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

TEM3 Nothing to report

WD1 January 10, 2017: Brief positive over range at 23:59. 0 invalid hour(s). January 11, 2017: Brief positive over range at 00:00 and 00:03. 0 invalid hour(s).

WD3 Nothing to report

WS1 Nothing to report

WS3 January 23, 2017 at 03:50 to January 25, 2017 at 14:46: Instrument problems. 59 invalid hour(s).

Glencore Sites

Coniston 77028 January 20, 2017: Monthly calibration from 10:22 – 12:29. 3 invalid hour(s).

Edison 77600 January 26, 2017: Monthly calibration from 13:05 – 15:12. 2 invalid hour(s).

Garson 77065 January 13, 2017: Monthly calibration from 13:50 – 15:13. 1 invalid hour(s).

Hanmer 77013 January 24,2017: Power outage from 12:51 – 13:15. 1 invalid hour(s). January 30,2017: Monthly calibration from 10:15 – 11:40. 2 invalid hour(s).

Parkinson 77601 January 11, 2017: Servicing from 9:02 – 10:14. 1 invalid hour(s). January 27, 2017: Monthly calibration from 10:06 – 10:55. 1 invalid hour(s).

Skead 77012 January 6, 2017: Servicing and monthly calibration from 12:03 – 13:17. 2 invalid hour(s). January 12, 2017: Calibration verification from 12:51 – 14:34. 2 invalid hour(s). January 24, 2017: Calibration verification from 10:30 – 12:07. 2 invalid hour(s).

Sunderland 77602 January 25, 2017: Monthly calibration from 11:20 – 12:18. 2 invalid hour(s).

Wahnapitae 77603 January 23, 2017: Monthly calibration from 14:21 – 15:16. 2 invalid hour(s). January 24, 2017: Brief negative under range at 10:16. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Falconbridge Met

DT2 Nothing to report TEM1 Nothing to report TEM3 Nothing to report

WD January 1, 2017: Instrument problems from 0:00 – 00:24 and 7:48 – 20:12. 13 invalid hour(s). January 3, 2017: Instrument problems from 8:55 – 10:26. 2 invalid hour(s).

WS January 1, 2017: Instrument problems from 0:00 – 00:24 and 7:00 – 20:59. 15 invalid hour(s). January 3, 2017: Instrument problems from 8:00 – 10:26. 3 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for February 2017

The following are the flagged conditions for each station for February 2017.

Vale Sites

Algonquin 77231 February 21, 2017: Monthly calibration from 13:55 – 14:48. 1 invalid hour(s).

Copper Cliff 77218 February 1, 2017: Monthly calibration from 14:02 – 15:06. 1 invalid hour(s).

Dozzi Park 77228 February 7, 2017: Monthly calibration from 10:31 – 12:02. 2 invalid hour(s).

Kelly Lake 77225 February 22, 2017: Monthly calibration from 14:08 – 15:14. 1 invalid hour(s).

Kinsmen 77227 February 6, 2017: Monthly calibration from 13:12 – 14:10. 1 invalid hour(s). February 20, 2017: Brief negative under range from 10:23 – 10:24. 0 invalid hour(s). February 21, 2017: Calibration verification from 10:50 – 12:51. 2 invalid hour(s).

New Sudbury 77075 February 24, 2017: Monthly calibration from 13:46 – 14:18. 1 invalid hour(s).

Rayside 77206 February 8, 2017: Monthly calibration from 11:14 – 12:31. 2 invalid hour(s).

Science North 77203 February 24, 2017: Monthly calibration from 11:14 – 12:16. 2 invalid hour(s).

Spruce St 77230 February 2, 2017: Monthly calibration from 12:54 – 14:24. 2 invalid hour(s).

Union 77330 February 13, 2017: Monthly calibration from 12:12 – 14:32. 3 invalid hour(s). February 22, 2017: Calibration verification from 10:02 – 10:56. 1 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

WD1 • Nothing to report WD3 • Nothing to report WS1 • Nothing to report WS3 • Nothing to report

Glencore Sites

Coniston 77028 February 9, 2017: Monthly calibration from 10:54 – 13:05. 2 invalid hour(s). February 9, 2017 at 13:06 – February 28, 2017 at 23:59: Adjusted value 13% decrease due to MOE audit on March 13, 2017. 0 invalid hour(s).

Edison 77600 February 23, 2017: Monthly calibration and missing data due to servicing from 9:49 – 10:55. 1 invalid hour(s).

Garson 77065 February 9, 2017: Monthly calibration from 13:50 – 14:48. 1 invalid hour(s).

Hanmer 77013 February15, 2017: Monthly calibration from 10:57 – 11:49. 1 invalid hour(s).

Parkinson 77601 February 27, 2017: Monthly calibration from 10:04 – 10:58. 1 invalid hour(s).

Skead 77012 February 15, 2017: Monthly calibration from 13:25 – 14:20. 2 invalid hour(s).

Sunderland 77602 February 7, 2017: Brief negative under range at 9:34. 0 invalid hour(s). February 14, 2017: Monthly calibration from 14:03 – 14:43. 1 invalid hour(s).

Wahnapitae 77603 February 14, 2017: Monthly calibration from 10:51 – 11:36. 1 invalid hour(s).

Falconbridge Met

DT2 • Nothing to report TEM1 • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

TEM3 • Nothing to report

WD Nothing to report WS Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for March 2017

The following are the flagged conditions for each station for March 2017.

Vale Sites

Algonquin 77231 March 6, 2017: Monthly calibration from 10:33 – 11:31. 2 invalid hour(s). March 13, 2017: Government audit from 9:06 – 9:37. 1 invalid hour(s).

Copper Cliff 77218 March 14, 2017: Government audit from 9:45 – 10:13. 0 invalid hour(s).

Dozzi Park 77228 March 4, 2017: Servicing from 10:30 – 10:55. 1 invalid hour(s). March 10, 2017: Government audit from 12:43 – 13:09. 1 invalid hour(s). March 30, 2017: Monthly calibration from 12:15 – 12:48. 1 invalid hour(s).

Kelly Lake 77225 March 1, 2017: Monthly calibration from 14:19 – 15:11. 1 invalid hour(s). March 3, 2017: Calibration verification from 8:53 – 9:27. 1 invalid hour(s). March 13, 2017: Government audit from 8:21 – 8:47. 1 invalid hour(s).

Kinsmen 77227 March 2, 2017: Monthly calibration from 14:30 – 15:08. 1 invalid hour(s). March 14, 2017: Government audit from 8:18 – 8:50. 1 invalid hour(s). March 23, 2017 at 3:11 – March 24, 2017 at 8:47: Instrument problems and servicing. 30 invalid hour(s).

New Sudbury 77075 March 10, 2017: Government audit from 10:31 – 11:00. 1 invalid hour(s).

Rayside 77206 March 2, 2017: Monthly calibration from 11:59 – 12:54. 1 invalid hour(s). March 9, 2017: Government audit from 9:42 – 10:48 and 12:58 – 13:06. 2 invalid hour(s). March 9, 2017: Servicing from 15:40 – 15:56. 1 invalid hour(s). March 14, 2017: Calibration verification from 9:19 – 10:04. 1 invalid hour(s).

Science North 77203 March 10, 2017: Brief negative under range from 5:37 – 5:39. 0 invalid hour(s). March 10, 2017: Government audit from 13:32 – 13:59. 1 invalid hour(s). March 31, 2017: Monthly calibration from 9:40 – 10:34. 2 invalid hour(s).

Spruce St 77230 March 10, 2017: Government audit from 11:33 – 12:07. 1 invalid hour(s). March 13, 2017: Monthly calibration from 10:36 – 11:36. 2 invalid hour(s).

Union 77330 March 6, 2017: Monthly calibration from 12:42 – 13:30. 2 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

March 14, 2017: Government audit from 9:08 – 9:35. 1 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD1 • Nothing to report WD3 • Nothing to report

WS1 March 26, 2017 at 11:09 to March 27, 2017 at 10:44: Instrument problems. 24 invalid hour(s).

WS3 March 26, 2017 at 11:09 to March 27, 2017 at 11:53: Instrument problems. 25 invalid hour(s).

Glencore Sites

Coniston 77028 March 1, 2017 at 0:00 – March 13, 2017 at 10:15: Adjusted value 13% decrease due to MOE audit on March 13, 2017. 0 invalid hour(s). March 7, 2017: Monthly calibration from 10:41 – 11:46. 2 invalid hour(s). March 13, 2017: Government audit from 10:16 – 10:54. 1 invalid hour(s). March 21, 2017: Calibration verification from 10:47 – 11:49. 1 invalid hour(s).

Edison 77600 March 7, 2017: Government audit from 13:58 – 14:35. 1 invalid hour(s). March 22, 2017: Monthly calibration from 13:11 – 13:53. 1 invalid hour(s).

Garson 77065 March 10, 2017: Government audit from 9:44 – 10:07. 1 invalid hour(s). March 29, 2017: Monthly calibration from 12:46 – 13:45. 1 invalid hour(s).

Hanmer 77013 March 3, 2017: Monthly calibration from 11:40 – 12:59. 2 invalid hour(s). March 9, 2017: Government audit from 11:16 – 11:50 and 13:30 – 13:53. 2 invalid hour(s). March 14, 2017: Calibration verification from 11:08 – 11:40. 1 invalid hour(s). March 28, 2017: Calibration verification from 13:12 – 14:11. 1 invalid hour(s). March 30, 2017: Servicing from 13:36 – 14:38. 2 invalid hour(s).

Parkinson 77601

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

March 7, 2017: Government audit from 13:10 – 13:40. 1 invalid hour(s). March 23, 2017: Monthly calibration from 8:45 – 10:48. 2 invalid hour(s). March 25, 2017: Servicing from 9:00 – 10:56. 2 invalid hour(s). March 26, 2017: Servicing from 16:45 – 17:04. 0 invalid hour(s).

Skead 77012 March 7, 2017: Monthly calibration from 13:04 – 14:10. 1 invalid hour(s). March 9, 2017: Government audit from 14:19 – 14:43. 1 invalid hour(s). March 14, 2017: Calibration verification from 12:33 – 13:07. 1 invalid hour(s).

Sunderland 77602 March 6, 2017: Servicing from 22:59 – 23:42. 1 invalid hour(s). March 7, 2017: Government audit from 12:09 – 12:49. 1 invalid hour(s). March 22, 2017: Monthly calibration from 10:07 – 11:07. 1 invalid hour(s).

Wahnapitae 77603 March 7, 2017: Government audit from 10. 1 invalid hour(s). March 23, 2017: Monthly calibration from 12:57 – 13:58. 1 invalid hour(s). March 28, 2017: Brief negative under range at 4:17. 0 invalid hour(s).

Falconbridge Met

DT2 March 30, 2017: Brief power outage at 7:45 and 8:39. 0 invalid hour(s).

TEM1 March 30, 2017: Brief power outage at 7:45 and 8:39. 0 invalid hour(s).

TEM3 March 30, 2017: Brief power outage at 7:45 and 8:39. 0 invalid hour(s).

WD March 30, 2017: Brief power outage at 7:45 and 8:39. 0 invalid hour(s).

WS March 30, 2017: Brief power outage at 7:45 and 8:39. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for April 2017

The following are the flagged conditions for each station for April 2017.

Vale Sites

Algonquin 77231 April 13, 2017: Monthly calibration from 7:39 – 8:50. 2 invalid hour(s).

Copper Cliff 77218 April 12, 2017: Monthly calibration from 13:16 – 14:20. 2 invalid hour(s). April 27, 2017: Brief negative under range at 17:10. 0 invalid hour(s).

Dozzi Park 77228 April 17, 2017: Monthly calibration from 12:37 – 13:47. 2 invalid hour(s). April 27, 2017: Brief negative under range from 17:10. 0 invalid hour(s).

Kelly Lake 77225 April 6, 2017: Monthly calibration from 13:08 – 14:03. 1 invalid hour(s). April 7, 2017 at 23:08 to April 8, 2017 at 9:23: Instrument problems. 11 invalid hour(s). April 25, 2017: Calibration verification from 12:15 – 13:39. 2 invalid hour(s). April 27, 2017: Brief negative under range at 15:39 and 17:10. 0 invalid hour(s).

Kinsmen 77227 April 3, 2017: Monthly calibration from 12:36 – 13:30. 2 invalid hour(s). April 27, 2017: Brief negative under range at 15:34, 15:35 and 15:39. 0 invalid hour(s). April 27, 2017 at 18:16 to April 28, 2017 at 12:51: Missing data due to power outage. 19 invalid hour(s).

New Sudbury 77075 April 19, 2017: Monthly calibration from 8:46 – 10:03. 1 invalid hour(s). April 29, 2017: Brief negative under range from 10:09. 0 invalid hour(s).

Rayside 77206 April 4, 2017: Monthly calibration from 11:53 – 13:04. 1 invalid hour(s). April 6, 2017: Calibration verification from 9:53 – 10:43. 1 invalid hour(s). April 20, 2017: Calibration verification from 10:49 – 11:45. 1 invalid hour(s). April 27, 2017 at 18:28 to April 28, 2017 at 4:22: Missing data due to power outage. 11 invalid hour(s).

Science North 77203 April 7, 2017 at 23:04 to April 8, 2017 at 9:55: Instrument problems. 11 invalid hour(s). April 13, 2017: Monthly calibration from 10:01 – 11:00. 1 invalid hour(s). April 14, 2017: Brief negative under range from 9:10 – 9:11. 0 invalid hour(s). April 27, 2017: Brief negative under range from 16:36. 0 invalid hour(s).

Spruce St 77230 April 13, 2017: Monthly calibration from 12:52 – 13:34. 1 invalid hour(s). April 27, 2017: Brief negative under range from 16:50. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Union 77330 April 12, 2017: Monthly calibration from 10:45 – 11:48. 1 invalid hour(s). April 27, 2017: Brief negative under range from 17:10. 0 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD1 • Nothing to report WD3 • Nothing to report WS1 • Nothing to report WS3 • Nothing to report

Glencore Sites

Coniston 77028 April 7, 2017 at 23:13 to April 8, 2017 at 6:54: Instrument problems. 8 invalid hour(s). April 18, 2017: Monthly calibration from 8:31 – 10:02. 2 invalid hour(s). April 27, 2017 at 20:41 to April 28, 2017 at 4:03: Missing data due to power outage. 8 invalid hour(s).

Edison 77600 April 27, 2017: Monthly calibration from 10:56 – 11:56. 1 invalid hour(s). April 27, 2017: Missing data due to power outage from 19:16 – 22:34. 4 invalid hour(s).

Garson 77065 April 17, 2017: Monthly calibration from 9:48 – 10:55. 1 invalid hour(s). April 27, 2017: Brief negative under range from 20:01 – 20:04. 0 invalid hour(s).

Hanmer 77013 April 4, 2017: Monthly calibration from 9:54 – 10:51. 1 invalid hour(s). April 7, 2017 at 21:17 to April 8, 2017 at 8:10: Instrument problems. 11 invalid hour(s). April 27, 2017: Missing data due to power outage from 19:30 – 21:33. 3 invalid hour(s).

Parkinson 77601 April 1, 2017: Servicing from 21:07 – 22:09. 1 invalid hour(s). April 7, 2017 at 21:07 to April 8, 2017 at 8:32: Instrument problems. 12 invalid hour(s). April 8, 2017: Servicing from 9:46 – 9:56. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

April 27, 2017: Monthly calibration from 8:14 – 9:19. 2 invalid hour(s). April 27, 2017: Missing data due to power outage from 18:29 – 22:34. 5 invalid hour(s). April 30, 2017: Servicing from 10:17 – 10:19. 0 invalid hour(s).

Skead 77012 April 5, 2017: Monthly calibration from 9:30 – 10:34. 2 invalid hour(s). April 27, 2017: Brief negative under range from 20:04. 0 invalid hour(s).

Sunderland 77602 April 7, 2017 at 23:39 to April 8, 2017 at 8:28: Instrument problems. 10 invalid hour(s). April 8, 2017: Servicing from 9:31 – 9:41. 0 invalid hour(s). April 27, 2017: Monthly calibration from 12:30 – 14:17. 3 invalid hour(s). April 27, 2017: Missing data due to power outage from 19:01 – 20:03. 1 invalid hour(s). April 29, 2017: Power outage and instrument problems from 12:21 – 19:29. 9 invalid hour(s). April 30, 2017: Power outage and servicing from 5:52 – 10:30. 5 invalid hour(s).

Wahnapitae 77603 April 13, 2017: Brief negative under range at 12:25. 0 invalid hour(s). April 24, 2017: Instrument problems, servicing and monthly calibration from 3:11 – 10:06. 7 invalid hour(s). April 27, 2017: Missing data due to power outage from 19:37 – 22:36. 4 invalid hour(s).

Falconbridge Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD • Nothing to report WS • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for May 2017

The following are the flagged conditions for each station for May 2017.

Vale Sites

Algonquin 77231 May 4, 2017: Monthly calibration from 11:45 – 13:31. 2 invalid hour(s). May 31, 2017: Calibration verification from 12:52 – 14:00. 1 invalid hour(s).

Copper Cliff 77218 May 8, 2017: Monthly calibration from 10:44 – 11:45. 2 invalid hour(s). May 28, 2017: Brief negative under range from 13:15 – 13:18. 0 invalid hour(s).

Dozzi Park 77228 May 10, 2017: Monthly calibration from 9:12 – 10:15. 2 invalid hour(s). May 28, 2017: Brief negative under range from 13:15 – 13:17. 0 invalid hour(s).

Kelly Lake 77225 May 9, 2017: Monthly calibration from 8:45 – 10:09. 1 invalid hour(s).

Kinsmen 77227 May 2, 2017: Servicing from 13:04 – 14:24. 2 invalid hour(s). May 3, 2017: Servicing from 8:31 – 13:25. 6 invalid hour(s). May 4, 2017: Servicing from 11:15 – 11:49 and 14:37 – 14:54. 2 invalid hour(s). May 19, 2017: Monthly calibration from 7:57 – 8:06. 0 invalid hour(s). May 30, 2017: Calibration verification from 11:43 – 13:47. 3 invalid hour(s).

New Sudbury 77075 May 24, 2017: Monthly calibration from 9:14 – 10:32. 2 invalid hour(s).

Rayside 77206 May 5, 2017: Monthly calibration from 9:51 – 11:21. 2 invalid hour(s). May 30, 2017: Calibration verification from 8:44 – 10:03. 2 invalid hour(s).

Science North 77203 May 12, 2017: Brief negative under range at 6:04. 0 invalid hour(s). May 26, 2017: Monthly calibration from 8:57 – 9:53. 1 invalid hour(s).

Spruce St 77230 May 10, 2017: Monthly calibration from 11:44 – 13:00. 2 invalid hour(s). May 16, 2017: Instrument problems from 0:56 – 4:28. 4 invalid hour(s).

Union 77330 May 8, 2017: Monthly calibration from 12:30 – 14:33. 3 invalid hour(s). May 28, 2017: Brief negative under range at 13:17. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

CKNC Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD1 • Nothing to report

WD3 May 18, 2017: Brief positive over range from 14:22 – 14:29. 0 invalid hour(s).

WS1 • Nothing to report WS3 • Nothing to report

Glencore Sites

Coniston 77028 May 2, 2017: Monthly calibration from 10:18 – 11:35. 2 invalid hour(s).

Edison 77600 May 23, 2017: Monthly calibration from 11:13 – 12:20. 2 invalid hour(s).

Garson 77065 May 16, 2017: Monthly calibration from 12:34 – 13:45. 2 invalid hour(s).

Hanmer 77013 May 5, 2017: Monthly calibration from 12:43 – 13:49. 2 invalid hour(s). May 31, 2017: Missing data due to power outage from 13:16 – 14:59. 2 invalid hour(s).

Parkinson 77601 May 17, 2017: Monthly calibration from 10:07 – 11:11. 1 invalid hour(s).

Skead 77012 May 11, 2017: Monthly calibration from 12:45 – 13:57. 1 invalid hour(s).

Sunderland 77602 May 15, 2017: Monthly calibration from 12:08 – 13:09. 1 invalid hour(s).

Wahnapitae 77603 May 9, 2017: Monthly calibration from 13:07 – 14:16. 2 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Falconbridge Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD • Nothing to report WS • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for June 2017

The following are the flagged conditions for each station for June 2017.

Vale Sites

Algonquin 77231 June 12, 2017: Monthly calibration from 11:12 – 12:21. 2 invalid hour(s). June 16, 2017: Brief negative under range from 19:27 – 19:29. 0 invalid hour(s). June 17, 2017: Brief negative under range at 7:03, 7:39, 8:33 and 9:34. 0 invalid hour(s). June 18, 2017: Brief negative under range from 8:53 – 8:55. 0 invalid hour(s). June 21, 2017: Government audit from 11:42 – 12:08. 1 invalid hour(s).

Copper Cliff 77218 June 9, 2017: Monthly calibration from 10:45 – 12:23. 2 invalid hour(s). June 22, 2017: Government audit from 12:05 – 12:35. 1 invalid hour(s). June 27, 2017: Brief negative under range from 15:33 – 15:35, 15:55, 17:50 – 17:53, 18:11 – 18:14 and 19:33 – 19:35. 0 invalid hour(s).

Dozzi Park 77228 June 9, 2017: Monthly calibration from 8:19 – 9:27. 2 invalid hour(s). June 23, 2017: Government audit from 12:15 – 12:47. 1 invalid hour(s). June 27, 2017: Brief negative under range from 15:33 – 15:35, 17:31, 17:48, 17:50 – 17:53, 18:11 – 18:14 and 19:33 – 19:35. 0 invalid hour(s).

Kelly Lake 77225 June 16, 2017: Monthly calibration from 9:21 – 10:01. 1 invalid hour(s). June 23, 2017: Government audit from 13:02 – 13:26. 1 invalid hour(s). June 27, 2017: Missing data due to power outage from 16:29 – 17:53. 2 invalid hour(s). June 29, 2017: Servicing from 10:46 – 11:35. 1 invalid hour(s).

Kinsmen 77227 June 6, 2017: Monthly calibration from 13:16 – 14:17. 2 invalid hour(s). June 15, 2017: Calibration verification from 19:16 – 19:58. 1 invalid hour(s). June 21, 2017: Government audit from 12:34 – 13:08. 1 invalid hour(s). June 27, 2017: Brief negative under range from 15:42 – 15:43 0 invalid hour(s).

New Sudbury 77075 June 15, 2017: Monthly calibration from 12:45 – 13:22. 1 invalid hour(s). June 22, 2017: Government audit from 10:07 – 10:51. 1 invalid hour(s).

Rayside 77206 June 6, 2017: Monthly calibration from 10:14 – 12:04. 2 invalid hour(s). June 20, 2017: Government audit from 12:25 – 12:59. 1 invalid hour(s). June 27, 2017: Brief negative under range from 15:16 – 15:17. 0 invalid hour(s).

Science North 77203 June 13, 2017: Brief negative under range from 6:01 – 6:03 and 6:18 – 6:22. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

June 13, 2017: Monthly calibration from 13:16 – 14:16. 2 invalid hour(s). June 17, 2017: Brief negative under range at 7:46. 0 invalid hour(s). June 22, 2017: Brief negative under range at 00:39 – 00:40, 1:07 – 1:08, 1:33 – 1:34, 2:26 – 2:27, 4:16 – 4:17 and 5:15 – 5:16. 0 invalid hour(s). June 23, 2017: Government audit from 9:06 – 9:38. 1 invalid hour(s). June 27, 2017: Brief negative under range from 15:33 – 15:34, 15:54 – 15:56 and 16:53 – 16:54. 0 invalid hour(s).

Spruce St 77230 June 16, 2017: Monthly calibration from 11:46 – 13:02. 1 invalid hour(s).

Union 77330 June 9, 2017: Monthly calibration from 12:58 – 14:15. 2 invalid hour(s). June 26, 2017: Government audit from 8:41 – 9:14. 1 invalid hour(s). June 27, 2017: Brief negative under range at 15:34, 15:55, 17:50, 17:53, 18:14 and 19:35. 0 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD1 • Nothing to report WD3 • Nothing to report WS1 • Nothing to report WS3 • Nothing to report

Glencore Sites

Coniston 77028 June 2, 2017: Monthly calibration from 9:15 – 10:22. 2 invalid hour(s). June 21, 2017: Government audit from 9:48 – 10:54. 1 invalid hour(s).

Edison 77600 June 8, 2017: Monthly calibration from 13:33 – 14:27. 2 invalid hour(s). June 13, 2017: Government audit from 8:10 – 8:43. 1 invalid hour(s).

Garson 77065

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

June 7, 2017: Monthly calibration from 9:47 – 11:15. 2 invalid hour(s). June 21, 2017: Government audit from 8:48 – 9:18. 1 invalid hour(s).

Hanmer 77013 June 1, 2017: Servicing from 8:01 – 8:17. 1 invalid hour(s). June 14, 2017: Monthly calibration from 10:26 – 11:38. 2 invalid hour(s). June 20, 2017: Government audit from 11:33 – 12:02. 1 invalid hour(s).

Parkinson 77601 June 15, 2017: Monthly calibration from 8:50 – 10:07. 1 invalid hour(s). June 20, 2017: Government audit from 10:15 – 10:44. 1 invalid hour(s).

Skead 77012 June 1, 2017: Monthly calibration at 9:44, 11:55 – 13:07. 1 invalid hour(s). June 20, 2017: Government audit from 9:13 – 9:44. 1 invalid hour(s).

Sunderland 77602 June 5, 2017: Monthly calibration from 11:33 – 11:35 and 12:23 – 13:37. 2 invalid hour(s). June 13, 2017: Government audit from 9:49 – 10:29. 1 invalid hour(s). June 13, 2017: Brief negative under range at 20:00. 0 invalid hour(s). June 16, 2017: Servicing from 16:38 – 18:17. 3 invalid hour(s). June 20, 2017: Servicing from 14:01 – 14:35. 1 invalid hour(s). June 29, 2017: Brief negative under range at 13:12. 0 invalid hour(s).

Wahnapitae 77603 June 5, 2017: Monthly calibration from 9:39 – 11:06. 2 invalid hour(s). June 13, 2017: Government audit from 11:14 – 11:43. 1 invalid hour(s).

Falconbridge Met

DT2 June 27, 2017: Brief negative under range 7:51. 0 invalid hour(s). June 27, 2017: Missing data due to scheduled maintenance from 7:56 – 13:17. 6 invalid hour(s). June 27, 2017: Missing data due to power outage from 16:09 – 16:20 and 16:40 – 16:44. 1 invalid hour(s).

TEM1 June 27, 2017: Brief negative under range 7:51. 0 invalid hour(s). June 27, 2017: Missing data due to scheduled maintenance from 7:56 – 13:17. 6 invalid hour(s). June 27, 2017: Power outage from 16:09 – 16:20 and 16:40 – 16:44. 1 invalid hour(s).

TEM3 June 27, 2017: Brief negative under range 7:51. 0 invalid hour(s). June 27, 2017: Missing data due to scheduled maintenance from 7:56 – 13:09. 5 invalid hour(s). June 27, 2017: Power outage from 16:09 – 16:20 and 16:40 – 16:44. 1 invalid hour(s).

WD June 27, 2017: Brief negative under range 7:51. 0 invalid hour(s). A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

June 27, 2017: Missing data due to scheduled maintenance from 7:56 – 13:17. 7 invalid hour(s). June 27, 2017: Brief negative under range from 13:38 – 13:46. 0 invalid hour(s). June 27, 2017: Power outage from 16:09 – 16:20 and 16:40 – 16:44. 1 invalid hour(s).

WS June 27, 2017: Brief negative under range 7:51. 0 invalid hour(s). June 27, 2017: Missing data due to scheduled maintenance from 7:56 – 13:17. 7 invalid hour(s). June 27, 2017: Brief negative under range from 13:37 – 13:46. 0 invalid hour(s). June 27, 2017: Power outage from 16:09 – 16:20 and 16:40 – 16:44. 1 invalid hour(s). June 28, 2017: Brief negative under range 8:54. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for July 2017

The following are the flagged conditions for each station for July 2017.

Vale Sites

Algonquin 77231 July 12, 2017: Annual preventative maintenance and monthly calibration from 9:50 – 9:55 and 12:58 – 13:37. 1 invalid hour(s). July 25, 2017: Servicing from 7:28 – 7:42 and 13:28 – 13:41. 0 invalid hour(s). July 31, 2017: Servicing from 13:45 -14:01. 0 invalid hour(s).

Copper Cliff 77218 July 5, 2017: Monthly calibration from 9:36 – 11:02. 2 invalid hour(s).

Dozzi Park 77228 July 1, 2017: Brief negative under range from 12:14 – 12:16. 0 invalid hour(s). July 5, 2017: Missing data due to lost communication from 13:00 – 20:00. 7 invalid hour(s). July 18, 2017: Monthly calibration from 9:58 – 10:38. 1 invalid hour(s). July 30, 2017: Power outage from 9:08 – 13:01. 4 invalid hour(s). July 30, 2017: Brief negative under range at 13:02. 0 invalid hour(s).

Kelly Lake 77225 July 18, 2017: Monthly calibration from 13:00 – 13:50. 1 invalid hour(s).

Kinsmen 77227 July 4, 2017: Monthly calibration from 12:46 – 13:44. 1 invalid hour(s). July 24, 2017: Servicing from 14:15 – 14:18. 0 invalid hour(s).

New Sudbury 77075 July 3, 2017: Missing data due to loss of communication from 3:00 – 4:00. 1 invalid hour(s). July 25, 2017: Monthly calibration from 12:09 – 13:26. 2 invalid hour(s).

Rayside 77206 July 21, 2017: Monthly calibration from 13:29 – 13:56. 1 invalid hour(s).

Science North 77203 July 24, 2017: Monthly calibration from 12:45 – 13:38. 1 invalid hour(s).

Spruce St 77230 July 11, 2017: Servicing from 9:48 – 9:58. 0 invalid hour(s).

Union 77330 July 5, 2017: Monthly calibration from 11:59 – 13:31. 2 invalid hour(s).

CKNC Met

DT2

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

July 17, 2017: Servicing from 8:01 – 8:35. 1 invalid hour(s).

TEM1 July 17, 2017: Servicing from 8:01 – 8:35. 1 invalid hour(s).

TEM3 • Nothing to report

WD1 July 17, 2017: Servicing from 8:20 – 8:30 and 8:35 – 8:42. 1 invalid hour(s). July 18, 2017: Servicing from 12:24 – 14:51. 3 invalid hour(s).

WD3 • Nothing to report

WS1 July 17, 2017 at 8:00 to July 18, 2017 at 14:51: Servicing and instrument problems. 31 invalid hour(s).

WS3 • Nothing to report

Glencore Sites

Coniston 77028 July 10, 2017: Monthly calibration from 11:45 – 13:10. 1 invalid hour(s).

Edison 77600 July 26, 2017: Monthly calibration from 10:46 – 11:36. 1 invalid hour(s).

Garson 77065 July 26, 2017: Monthly calibration from 12:46 – 13:36. 1 invalid hour(s).

Hanmer 77013 July 13, 2017: Annual preventative maintenance and monthly calibration from 11:15 – 11:21, 13:57 – 14:16. 1 invalid hour(s). July 21, 2017: Annual preventative maintenance and calibration verification 10:46 – 10:55. 0 invalid hour(s).

Parkinson 77601 July 26, 2017: Monthly calibration from 9:03 – 9:53. 1 invalid hour(s).

Skead 77012 July 7, 2017: Monthly calibration at 9:45 – 10:44. 1 invalid hour(s). July 29, 2017: Servicing at 7:38 – 8:28. 2 invalid hour(s).

Sunderland 77602

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

July 25, 2017: Servicing and monthly calibration from 9:11 – 10:40. 2 invalid hour(s).

Wahnapitae 77603 July 10, 2017: Servicing from 9:16 – 9:57. 1 invalid hour(s). July 20, 2017: Monthly calibration from 11:15 – 12:33. 2 invalid hour(s).

Falconbridge Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD • Nothing to report WS • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for August 2017

The following are the flagged conditions for each station for August 2017.

Vale Sites

Algonquin 77231 August 1, 2017: Servicing and monthly calibration from 12:28 – 13:52. 2 invalid hour(s). August 8, 2017: Brief negative under range from 14:41 – 14:43. 0 invalid hour(s). August 18, 2017: Servicing from 14:11 – 14:19. 0 invalid hour(s).

Copper Cliff 77218 August 8, 2017: Servicing and monthly calibration from 9:46 – 13:01. 3 invalid hour(s). August 18, 2017: Servicing from 12:03 – 12:10. 0 invalid hour(s).

Dozzi Park 77228 August 4, 2017: Servicing from 13:14 – 13:43. 1 invalid hour(s). August 17, 2017: Monthly calibration from 13:30 – 14:14. 1 invalid hour(s). August 18, 2017: Servicing from 12:56 – 13:28. 1 invalid hour(s). August 28, 2017: Servicing from 13:08 – 13:46. 1 invalid hour(s).

Kelly Lake 77225 August 4, 2017: Servicing from 12:13 – 12:43. 1 invalid hour(s). August 14, 2017: Monthly calibration from 12:29 – 13:21. 2 invalid hour(s). August 31, 2017: Calibration verification from 13:30 – 14:07. 1 invalid hour(s).

Kinsmen 77227 August 1, 2017: Monthly calibration from 10:27 – 11:19. 2 invalid hour(s). August 11, 2017: Brief negative under range from 9:07 – 9:09. 0 invalid hour(s). August 18, 2017: Servicing from 11:18 – 11:32. 0 invalid hour(s).

New Sudbury 77075 August 10, 2017: Monthly calibration from 9:45 – 10:50. 1 invalid hour(s). August 15, 2017: Brief negative under range from 12:25. 0 invalid hour(s). August 23, 2017: Servicing from 9:58 – 11:13. 1 invalid hour(s).

Rayside 77206 August 3, 2017: Monthly calibration from 10:15 – 11:12. 1 invalid hour(s). August 11, 2017: Brief negative under range from 9:07 – 9:08. 0 invalid hour(s). August 25, 2017: Servicing from 13:29 – 13:42. 0 invalid hour(s).

Science North 77203 August 10, 2017: Monthly calibration from 12:42 – 13:45. 2 invalid hour(s). August 11, 2017: Brief negative under range from 13:14 – 13:16. 0 invalid hour(s). August 18, 2017: Servicing from 14:39 – 14:50. 0 invalid hour(s).

Spruce St 77230 August 25, 2017: Monthly calibration from 12:04 – 13:04. 1 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Union 77330 August 8, 2017: Monthly calibration from 12:28 – 13:25. 2 invalid hour(s). August 18, 2017: Servicing from 12:25 – 12:34. 0 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD1 • Nothing to report WD3 • Nothing to report WS1 • Nothing to report WS3 • Nothing to report

Glencore Sites

Coniston 77028 August 9, 2017: Monthly calibration from 9:45 – 10:57. 1 invalid hour(s). August 28, 2017: Servicing from 11:44 – 12:15. 2 invalid hour(s).

Edison 77600 August 24, 2017: Monthly calibration from 10:44 – 11:34. 2 invalid hour(s).

Garson 77065 August 15, 2017: Monthly calibration from 10:30 – 11:45. 2 invalid hour(s). August 23, 2017: Servicing from 12:10 – 12:45. 1 invalid hour(s).

Hanmer 77013 August 3, 2017: Monthly calibration from 12:45 – 13:44. 1 invalid hour(s). August 31, 2017: Servicing from 10:31 – 10:44. 0 invalid hour(s).

Parkinson 77601 August 21, 2017: Monthly calibration from 12:57 – 13:56. 1 invalid hour(s).

Skead 77012 August 2, 2017: Servicing from 12:45 – 13:47. 1 invalid hour(s). August 11, 2017: Servicing from 9:30 – 11:33. 3 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

August 24, 2017: Monthly calibration from 9:00 – 9:52. 1 invalid hour(s).

Sunderland 77602 August 21, 2017: Monthly calibration from 9:16 – 11:05. 2 invalid hour(s).

Wahnapitae 77603 August 9, 2017: Monthly calibration from 12:28 – 13:27. 2 invalid hour(s). August 11, 2017: Brief negative under range at 15:27. 0 invalid hour(s). August 28, 2017: Servicing from 10:18 – 10:52. 1 invalid hour(s).

Falconbridge Met

DT2 • Nothing to report TEM1 • Nothing to report TEM3 • Nothing to report WD • Nothing to report WS • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for September 2017

The following are the flagged conditions for each station for September 2017.

Vale Sites

Algonquin 77231 September 5, 2017: Monthly calibration from 13:49 – 14:20. 1 invalid hour(s).

Copper Cliff 77218 September 7, 2017: Monthly calibration from 12:00 – 13:00. 1 invalid hour(s).

Dozzi Park 77228 September 6, 2017: Monthly calibration from 12:31 – 13:08. 1 invalid hour(s).

Kelly Lake 77225 September 20, 2017: Monthly calibration from 13:40 – 14:16. 2 invalid hour(s).

Kinsmen 77227 September 5, 2017: Monthly calibration from 12:30 – 13:18. 2 invalid hour(s). September 8, 2017: Servicing from 7:58 – 8:03. 0 invalid hour(s). September 12, 2017: Servicing from 8:58 – 9:06. 0 invalid hour(s).

New Sudbury 77075 September 21, 2017: Monthly calibration from 12:00 – 12:53. 1 invalid hour(s).

Rayside 77206 September 12, 2017: Monthly calibration from 10:01 – 10:50. 1 invalid hour(s).

Science North 77203 September 19, 2017: Monthly calibration from 13:20 – 14:07. 1 invalid hour(s).

Spruce St 77230 September 6, 2017: Monthly calibration from 13:41 – 14:22. 2 invalid hour(s). September 20, 2017: Annual preventative maintenance from 10:53 – 12:31. 2 invalid hour(s). September 21, 2017: Servicing from 7:09 – 8:34. 2 invalid hour(s). September 25, 2017: Servicing from 10:11 – 10:33. 1 invalid hour(s).

Union 77330 September 7, 2017: Monthly calibration from 13:21 – 14:02. 1 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 (12m) • Nothing to report A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

TEM3 (114m) • Nothing to report WD1 (12m) • Nothing to report WD3 (114m) • Nothing to report WS1 (12m) • Nothing to report WS3 (114m) • Nothing to report

Glencore Sites

Coniston 77028 September 14, 2017: Monthly calibration from 10:45 – 11:34. 1 invalid hour(s).

Edison 77600 September 22, 2017: Monthly calibration from 11:50 – 12:24. 1 invalid hour(s).

Garson 77065 September 18, 2017: Monthly calibration from 13:00 – 13:49. 1 invalid hour(s).

Hanmer 77013 September 12, 2017: Monthly calibration from 12:00 – 12:48. 1 invalid hour(s).

Parkinson 77601 September 21, 2017: Monthly calibration from 13:23 – 14:02. 1 invalid hour(s).

Skead 77012 September 18, 2017: Monthly calibration from 10:49 – 11:46. 1 invalid hour(s).

Sunderland 77602 September 14, 2017: Monthly calibration from 12:15 – 13:05. 1 invalid hour(s).

Wahnapitae 77603 September 14, 2017: Monthly calibration from 9:09 – 10:06. 1 invalid hour(s).

Falconbridge Met

DT2 September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

TEM1 (2m) September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

TEM3 (60m) September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

WD (60m) September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

WDL (30m) September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

WS (60m) September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

WSL (30m) September 10, 2017: Scheduled power outage from 7:52 – 18:54. 11 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for October 2017

The following are the flagged conditions for each station for October 2017.

Vale Sites

Algonquin 77231 October 17, 2017: Monthly calibration from 12:29 – 13:24. 2 invalid hour(s). October 23, 2017: Government audit from 12:59 – 13:30. 1 invalid hour(s).

Copper Cliff 77218 October 6, 2017 at 3:11 – October 7, 2017 at 4:23: Instrument problems and servicing. 26 invalid hour(s). October 10, 2017: Servicing from 9:49 – 10:44. 1 invalid hour(s). October 18, 2017 at 3:11 – October 19, 2017 at 7:06: Instrument problems and servicing. 28 invalid hour(s). October 19, 2017: Servicing and monthly calibration from 9:29 – 9:54. 1 invalid hour(s). October 23, 2017: Government audit from 9:23 – 9:58. 1 invalid hour(s).

Dozzi Park 77228 October 18, 2017: Monthly calibration from 10:30 – 11:19. 2 invalid hour(s). October 23, 2017: Government audit from 12:09 – 12:33. 1 invalid hour(s).

Kelly Lake 77225 October 18, 2017: Monthly calibration from 13:29 – 14:24. 2 invalid hour(s). October 23, 2017: Government audit from 13:51 – 14:17. 1 invalid hour(s).

Kinsmen 77227 October 10, 2017: Monthly calibration from 13:14 – 13:53. 1 invalid hour(s). October 23, 2017: Government audit from 8:31 – 9:03. 1 invalid hour(s).

New Sudbury 77075 October 20, 2017: Monthly calibration from 10:45 – 11:16. 1 invalid hour(s). October 24, 2017: Government audit from 11:27 – 11:57. 1 invalid hour(s).

Rayside 77206 October 10, 2017: Monthly calibration from 11:48 – 12:25. 1 invalid hour(s). October 25, 2017: Government audit from 11:41 – 12:06. 1 invalid hour(s).

Science North 77203 October 18, 2017: Monthly calibration from 12:28 – 13:04. 1 invalid hour(s). October 24, 2017: Government audit from 14:11 – 14:44. 1 invalid hour(s).

Spruce St 77230 October 18, 2017: Monthly calibration from 9:10 – 9:57. 1 invalid hour(s). October 23, 2017: Government audit from 10:59 – 11:27. 1 invalid hour(s).

Union 77330 October 16, 2017: Monthly calibration from 12:40 – 13:32. 2 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

October 23, 2017: Government audit from 10:07 – 10:39. 1 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 (12m) • Nothing to report TEM3 (114m) • Nothing to report WD1 (12m) • Nothing to report WD3 (114m) • Nothing to report WS1 (12m) • Nothing to report WS3 (114m) • Nothing to report

Glencore Sites

Coniston 77028 October 17, 2017: Monthly calibration from 10:09 – 11:13. 1 invalid hour(s). October 24, 2017: Government audit from 9:18 – 9:48. 1 invalid hour(s).

Edison 77600 October 19, 2017: Monthly calibration from 12:14 – 12:51. 1 invalid hour(s). October 25, 2017: Government audit from 9:39 – 10:03. 1 invalid hour(s).

Garson 77065 October 2, 2017: Servicing and monthly calibration from 8:51 – 9:38. 1 invalid hour(s). October 24, 2017: Government audit from 10:12 – 10:41. 1 invalid hour(s).

Hanmer 77013 October 11, 2017: Monthly calibration from 8:45 – 9:37. 1 invalid hour(s). October 25, 2017: Government audit from 10:38 – 11:10. 1 invalid hour(s).

Parkinson 77601 October 12, 2017: Servicing from 9:05 – 9:22. 1 invalid hour(s). October 13, 2017: Monthly calibration from 12:50 – 13:36. 1 invalid hour(s). October 25, 2017: Government audit from 8:57 – 9:25. 1 invalid hour(s). October 26, 2017: Preventative maintenance from 12:37 – 13:34. 2 invalid hour(s).

Skead 77012 October 11, 2017: Monthly calibration from 10:20 – 11:09. 1 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

October 26, 2017: Government audit from 9:06 – 9:35. 1 invalid hour(s).

Sunderland 77602 October 19, 2017: Monthly calibration from 10:58 – 11:35. 1 invalid hour(s). October 25, 2017: Government audit from 8:06 – 8:39. 1 invalid hour(s).

Wahnapitae 77603 October 17, 2017: Monthly calibration from 8:35 – 9:26. 2 invalid hour(s). October 24, 2017: Government audit from 8:24 – 8:56. 1 invalid hour(s).

Falconbridge Met

DT2 October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

TEM1 (2m) October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

TEM3 (60m) October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

WD (60m) October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

WDL (30m) October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

WS (60m) October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

WSL (30m) October 18, 2017: Brief power outage at 15:23 and 17:11. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for November 2017

The following are the flagged conditions for each station for November 2017.

Vale Sites

Algonquin 77231 November 2, 2017: Monthly calibration from 9:17 – 9:55. 1 invalid hour(s).

Copper Cliff 77218 November 15, 2017: Monthly calibration from 11:57 – 12:34. 1 invalid hour(s).

Dozzi Park 77228 November 15, 2017: Monthly calibration from 14:30 – 15:25. 2 invalid hour(s).

Kelly Lake 77225 November 11, 2017 at 3:11 – November 12, 2017 at 1:29: Instrument problems and servicing. 23 invalid hour(s). November 14, 2017: Monthly calibration and servicing from 14:14 – 15:15. 2 invalid hour(s).

Kinsmen 77227 November 1, 2017: Servicing from 12:57 – 15:12. 2 invalid hour(s). November 3, 2017: Monthly calibration and servicing from 10:14 – 11:07. 1 invalid hour(s).

New Sudbury 77075 November 27, 2017: Monthly calibration from 11:35 – 12:22. 2 invalid hour(s).

Rayside 77206 November 20, 2017: Monthly calibration from 12:39 – 13:21. 2 invalid hour(s).

Science North 77203 November 27, 2017: Monthly calibration from 13:46 – 14:28. 1 invalid hour(s).

Spruce St 77230 November 27, 2017: Monthly calibration from 15:00 – 15:43. 1 invalid hour(s).

Union 77330 November 3, 2017: Monthly calibration from 13:28 – 14:18. 2 invalid hour(s). November 11, 2017: Brief negative under range from 9:33 – 9:34. 0 invalid hour(s). November 15, 2017: Servicing from 11:13 – 11:29. 1 invalid hour(s). November 29, 2017: Servicing from 14:39 – 16:05. 2 invalid hour(s).

CKNC Met

DT2 • Nothing to report TEM1 (12m)

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

• Nothing to report TEM3 (114m) • Nothing to report WD1 (12m) • Nothing to report

WD3 (114m) November 16, 2017: Instrument problems from 2:05 – 3:04. 1 invalid hour(s).

WS1 (12m) • Nothing to report

WS3 (114m) November 16, 2017: Instrument problems from 1:59 – 17:27. 16 invalid hour(s).

Glencore Sites

Coniston 77028 November 17, 2017: Servicing and monthly calibration from 6:57 – 7:29. 1 invalid hour(s).

Edison 77600 November 15, 2017 at 3:11 – November 16, 2017 at 8:25: Instrument problems, servicing and monthly calibration. 30 invalid hour(s).

Garson 77065 November 21, 2017: Monthly calibration from 11:39 – 12:23. 2 invalid hour(s).

Hanmer 77013 November 20, 2017: Monthly calibration from 11:17 – 11:54. 1 invalid hour(s).

Parkinson 77601 November 23, 2017: Monthly calibration from 12:26 – 13:06. 1 invalid hour(s).

Skead 77012 November 27, 2017: Monthly calibration from 9:58 – 10:40. 1 invalid hour(s).

Sunderland 77602 November 23, 2017: Monthly calibration from 11:09 – 11:44. 1 invalid hour(s).

Wahnapitae 77603 November 21, 2017: Monthly calibration from 13:32 – 14:06. 1 invalid hour(s).

Falconbridge Met

DT2

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

• Nothing to report TEM1 (2m) • Nothing to report TEM3 (60m) • Nothing to report WD (60m) • Nothing to report WDL (30m) • Nothing to report WS (60m) • Nothing to report WSL (30m) • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Data Editing for December 2017

The following are the flagged conditions for each station for December 2017.

Vale Sites

Algonquin 77231 December 4, 2017: Monthly calibration from 13:29 – 14:04. 1 invalid hour(s).

Copper Cliff 77218 December 5, 2017: Monthly calibration from 14:01 – 14:44. 1 invalid hour(s). December 12, 2017 at 3:11 – December 13, 2017 at 6:10: Instrument problem and servicing. 27 invalid hour(s). December 13, 2017: Servicing from 8:14 – 9:07 and 13:13 – 13:18. 1 invalid hour(s).

Dozzi Park 77228 December 4, 2017: Monthly calibration and preventative maintenance from 10:50 – 12:42. 2 invalid hour(s).

Kelly Lake 77225 December 22, 2017: Monthly calibration from 9:41 – 10:05. 1 invalid hour(s).

Kinsmen 77227 December 15, 2017: Monthly calibration from 12:46 – 13:22. 1 invalid hour(s).

New Sudbury 77075 December 18, 2017: Servicing from 10:34 – 11:40. 2 invalid hour(s). December 19, 2017: Servicing and monthly calibration from 9:23 – 10:12. 1 invalid hour(s).

Rayside 77206 December 6, 2017: Monthly calibration and preventative maintenance from 11:59 – 13:42. 2 invalid hour(s).

Science North 77203 December 20, 2017: Monthly calibration and preventative maintenance from 13:20 – 14:49. 2 invalid hour(s).

Spruce St 77230 December 20, 2017: Monthly calibration from 11:44 – 12:36. 2 invalid hour(s).

Union 77330 December 5, 2017: Monthly calibration from 15:04 – 15:40. 1 invalid hour(s). December 19, 2017: Servicing and brief power outage from 15:04 – 15:11. 0 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

CKNC Met

DT2 • Nothing to report TEM1 (12m) • Nothing to report TEM3 (114m) • Nothing to report WD1 (12m) • Nothing to report WD3 (114m) • Nothing to report WS1 (12m) • Nothing to report WS3 (114m) • Nothing to report

Glencore Sites

Coniston 77028 December 15, 2017: Monthly calibration from 10:57 – 11:41. 1 invalid hour(s).

Edison 77600 December 14, 2017: Monthly calibration from 13:16 – 13:46. 1 invalid hour(s).

Garson 77065 December 19, 2017: Monthly calibration from 11:16 – 12:08. 1 invalid hour(s).

Hanmer 77013 December 14, 2017: Monthly calibration from 10:29 – 11:01. 1 invalid hour(s).

Parkinson 77601 December 8, 2017: Servicing from 7:57 – 8:25. 1 invalid hour(s). December 14, 2017: Monthly calibration from 14:08 – 14:36. 1 invalid hour(s).

Skead 77012 December 14, 2017: Monthly calibration from 11:44 – 12:40. 2 invalid hour(s).

Sunderland 77602 December 13, 2017: Monthly calibration from 11:39 – 12:23. 2 invalid hour(s).

Wahnapitae 77603 December 15, 2017: Monthly calibration from 9:38 – 10:22. 2 invalid hour(s).

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected]

Falconbridge Met

DT2 • Nothing to report TEM1 (2m) • Nothing to report TEM3 (60m) • Nothing to report WD (60m) • Nothing to report WDL (30m) • Nothing to report WS (60m) • Nothing to report WSL (30m) • Nothing to report

A Division of Boudreau-Espley-Pitre Corporation

1040 Lorne Street, Unit 3, Sudbury, ON P3C 4R9 Tel.(705)675-7720 Fax (705)675-5507 E-mail: [email protected] Vale Canada Limited / Glencore Canada Corporation 2017 Sudbury SO2 Report

Appendix C Figures

Figure C1: Monitoring Station Location Map

Source: Google Earth Pro, February 2014