THE CORPORATION OF THE CITY OF TIMMINS Porcupine …

THE CORPORATION OF

THE CITY OF TIMMINS

Porcupine Watershed Public Liaison Committee Meeting

Agenda

Monday, June 24, 2019 at 10:00 a.m.

Location: Gold Boardroom, City Hall

PRESENT:

Chair - Brenda Torresan

Friends of the Porcupine River Watershed (FPRW) - Paula Hoggett, Jim Hoggett, Sherrill Richards (T), Angie Corson

CELA - Jacqueline Wilson

Ministry - Jean-Francois Durocher, Jean Guindon, Sherry Illersich (T)

Goldcorp - Stephanie Thibeault

PHU - Suzanne Lajoie, Lianne Catton

MRCA - David Vallier

City of Timmins - John Curley, Mickey Auger, Dave Landers, Scott Tam, Pat Seguin

Page

1. APPROVAL OF AGENDA a) Approval of Agenda

2. APPROVAL OF PREVIOUS MINUTES 3 - 6 a) Approval of previous Minutes

3. BUSINESS ARISING FROM THE MINUTES 7 - 8 a) Enhanced Sampling Program - Scott Tam 9 b) 2018 Bypass Data - Scott Tam 10 c) Public Notification Procedure - Scott 11 - 18 d) Updated PHU Sampling Approach - Suzanne

4. NEW BUSINESS 19 - 35 a) Presentation on Mining Effluent Effects - Stephanie b) Sanitary System Upgrades - Pat c) Bathometric Data - Angie 36 - 39 d) Results of Snow and Salt Study - Angie

Page 1 of 39

Page

e) Update on Radcliffe Property - Scott f) Storm Water Management - all

5. OTHER MATTERS

6. ADJOURNMENT a) Adjournment

Page 2 of 39

THE CORPORATION OF

THE CITY OF TIMMINS

Porcupine Watershed Public Liaison Committee Minutes

Monday, May 27, 2019 at 10:00 AM

Location: 220 Algonquin Blvd East, Gold Boardroom

PRESENT:

Chair - Brenda Torresan Friends of the Porcupine River Watershed (FPRW)- Paula Hoggett, Jim Hoggett, Sherrill Richards (T) CELA - Jacqueline Wilson (T) Ministry - Jean-Francois Durocher, Jean Guindon, Sherry Illersich (T) PHU - Suzanne Lajoie, Lianne Catton MRCA - David Vallier City of Timmins - Dave Landers, Scott Tam

ABSENT:

Goldcorp - Stephanie Thibeault City of Timmins - John Curley, Mickey Auger Friends of the Porcupine Watershed (FTPW) - Angie Corson

The following is a summary of items discussed. Please advise the writer of any errors or omissions within 24 hours (1 business day)

1 APPROVAL OF AGENDA a) Approval of Agenda

MOVED BY: Scott Tam

SECONDED BY: Dave Vallier

That the agenda be approved as presented.

2 APPROVAL OF PREVIOUS MINUTES a) Approval of previous Minutes

MOVED BY: Jim Hoggett

SECONDED BY: Sherrill Richards

THAT the minutes of the April 29, 2019 meeting of the Porcupine Watershed Public Liaison Committee be approved.

3 BUSINESS ARISING FROM THE MINUTES a) Technical Support Response to City of Timmins - (Scott Tam)

Scott Tam provided an overview of the comments from technical support in response to the questions from the City of Timmins. He spoke to the recommendations regarding

AGENDA ITEM #2.a)

Approval of previous Minutes Page 3 of 39

chlorine residuals, modelling and phosphorous limits. Scott further explained that chlorination is a constant dosage rate regardless of the volume of the bypass and it is an automated process in stations #2 and #3 only. Further, there are questions regarding the use of road salt and whether that has any impact on active chlorine.

b) Enhanced Sampling Program - Scott

Scott is looking for any further directions regarding enhanced sampling and it was recommended that a sample occur at the outflow of Bob's Lake Lagoon into Porcupine Lake.

ACTION:

1. Scott will resend the enhanced sampling memo from November 2018. 2. Brenda will share with the Friends of the Porcupine River Watershed for input.

4 NEW BUSINESS a) Public Liaison Committee minutes and agendas on City of Timmins Website - Dave

Landers

Dave walked through the public posting of the Porcupine Watershed Liaison Committee information. The path to it is as follows:

www.timmins.ca

1. In the metaframe go to Our Services and then to Mayor and Council and click on Mayor and Council.

2. Scroll down to the Mayor and Council New and click on the red Civic Web button 3. On the homepage for committee meetings, click on Meetings, which will take you

to the Porcupine Watershed Public Liaison Committee and the information is contained there. The web address is: https://timmins.civicweb.net/Portal/MeetingTypeList.aspx

It was recommended that the Agenda be published, if possible, a week ahead of scheduled meetings. The general consensus is that the public posting of information will be a good step towards sharing information with the community.

b) Update on timing for the signs (City & PHU) to go up at the beaches on Porcupine Lake - Scott

Scott reported that within the next two weeks the signs will be posted at the beaches on Porcupine Lake. The Porcupine Health Unit will follow thereafter.

c) Update on Sanitary System upgrades - Dave

Phase 1 - The engineers are approximately half way through the detailed design of the solution to stabilize pump station #4 and the city expects that design to be available for council's approval by the end of June.

Phase 2 - Continues to move forward on schedule.

The RFP for the drudging of Bob's Lake Lagoon has closed. d) Meeting schedule for summer months - Brenda

The group agreed that the July meeting should be cancelled to respect people's vacation planning.

e) Beach monitoring recommendations - Jacqueline

Jacqueline provided an overview of the memo entitled Recommendations for Porcupine

AGENDA ITEM #2.a)


https://timmins.civicweb.net/Portal/MeetingTypeList.aspx

Health Unit monitoring of Porcupine Beach. Those recommendations included:

1. That the Porcupine Health Unit conduct water sampling within 24 hours of a triggering event.

2. That the Porcupine Health Unit post an exceedance and if it is retested and the exceedance isn't met that it is taken down, as opposed to not posting an exceedance unless it has been confirmed in subsequent days.

3. That the Porcupine Health Unit prepare a map of sampling points and order of sampling.

4. The Porcupine Health Unit incorporate Health Canada's guidelines into their approach.

5. That the Porcupine Health Unit consider predictive modelling going forward.

Dr. Catton responded that the Porcupine Health Unit has completed a full overview of its sampling program and many of the recommendations are likely covered off in the approach that the Porcupine Health Unit will bring forward and share at the June meeting.

ACTION: Porcupine Health Unit to provide the updated beach monitoring program. f) Budget - Jacqueline

Jacqueline discussed other jurisdictions where there are two models that exist where either a set budget in the amount of approximately $6-12 per year is identified in the budget process or where the Public Liaison Committee predicts its funding needs and makes a specific request on an annual basis through the budget process. Staff confirmed that either process would fit with the city budget program and that the Public Liaison Committee will identify that this will come forward to council when it gives its update to council.

5 OTHER MATTERS a) Future agenda items - update on Radcliffe property; Updating the bathometric data

available from 1952 and in the 1970s; Stormwater Management Plan; Presentation on Mining Effluent Effects Study

Items were reviewed for future meetings. b) Public Notification Procedure

ACTION: Scott to update Appendix C, the Public Notification Procedure for the June 24, 2019 meeting.

c) Fish Tissue Sampling

Jean confirmed that the fish tissue sampling will continue on June 23, 2019. d) 2018 Bypass Data

ACTION: Scott to provide the 2018 bypass data for the June 24, 2019 meeting. e) Cleanup - Porcupine Lake

During the cleanup at Porcupine Lake held this past weekend a number of property standards issues were identified, which will be forwarded to Bylaw for action.

f) Snow and Salt Testing

ACTION - Angie to present on snow and salt testing at the June 24, 2019 meeting.

AGENDA ITEM #2.a)


6 ADJOURNMENT a) Adjournment

MOVED BY: Paula Hoggett

SECONDED BY: Jim Hoggett

This meeting adjourned at 11:15 a.m.

NEXT MEETING: June 24, 2019.

AGENDA ITEM #2.a)


Memo

TO: Dave Landers FROM: Environmental Services and Public Utilities Department DATE: May 31, 2019 RE: Enhanced Porcupine Lake Sampling Program – Revision 1

The City of Timmins is seeking a third party consulting company to conduct an enhanced Water Quality sampling program on Porcupine Lake to determine areas of impact associated with sewage bypasses from the Whitney-Tisdale Water Pollution Control Plant (WPCP) and associated pump stations. 1. Field Program The following sampling programs are to be considered:

a. Lake stratification sampling – Collect water quality samples at the

Epilimnion, Thermocline and Hypolimnion to provide a stratified view of the water quality within the lake. Cost: Between $15,000.00 and $35,000.00 b. Sediment core sampling - to identify depth of sewage impact and determine metal analysis. Samples will be done upstream and downstream of the Whitney-Tisdale Water Pollution Control Plant and Pumping Stations. Cost: Between $10,000.00 and $20,000.00 c. Macroinvertebrate sampling - to assist in determining water quality and pollution impact. Cost: Potentially up to $100,000.00 d. Fish tissue sampling - to determine impact of current and historical pollutants on fish population and impact to recreational fishing. Cost: Potentially up to $100,000.00 Recommendation: Environmental Services and Public Utilities recommends Lake Stratification sampling and sediment core sampling. Due to the many users discharging into Porcupine Lake, the City of Timmins is looking to identify sewage impacts. Samples will also be collected upstream of the Whitney-Tisdale Water Pollution Control Plant (WPCP) and associated pump stations to assist in delineating sewage impacts.

AGENDA ITEM #3.a)

Enhanced Sampling Program - Scott Tam Page 7 of 39

Macroinvertebrate sampling is not recommended due to the length of time it takes for to receive the results. Water and sediment quality is the most effective and economical approach to determining impacts associated with sewage bypasses. The fish tissue sampling is a provincial initiative that is scheduled to begin in June of 2019. The Ministry of Natural Resources and Forestry created the Guide to Eating Ontario Sport Fish, 2013-2014, which includes Porcupine Lake. 2. Analysis a. Full metal analysis; b. Dissolved oxygen, biochemical oxygen demand, chemical oxygen demand, total organic carbon, total phosphorus, total nitrogen, total solids, dissolved solids and alkalinity; c. Bacteriological sampling associated with sewage bypasses; E. coli, total coliform 3. Timeline a. This enhanced sampling program is recommended to be conducted during ice cover (Winter) due to ease of access and reduction in contamination from site to site.

AGENDA ITEM #3.a)

Enhanced Sampling Program - Scott Tam Page 8 of 39

22

BY-PASS RESULTS

A by-pass occurs when effluent is unable to be processed, for a variety of reasons,

through the sewage system and basically “by-passes” the system and is released

directly into the natural environment. Typically, a by-pass occurs during high flow

periods relating to the spring thaw and/or a severe weather event.

There were a total of 3 by-pass events reported in 2013, 16 in 2014, 22 in 2015, 15 in

2016 and 14 in 2017.

In 2018, there were a total of 7 by-pass events from the specified pumping stations

reported on the following days with the total volumes discharged:

April 22 – stations 2 & 6 - total 34 178 m3

April 23 – stations 1 – total 4 419 m3

May 10 – station 5 – total 65.5 m3

June 13 – stations 2, 3, 4, 5 & 6 – total 11 977 m3

September 5 – station 2 – total – 1 223 m3

October 10 - stations 1, 2, 3, 5 & 6 – total 46 127 m3

November 6 – station 5 – total – 125 m3

The procedure for monitoring by-pass events changed formally in late spring 2018. In

the past, the City of Timmins was responsible for all sampling requirements during a by-

pass. The procedure was changed to the following:

- City of Timmins staff to notify BZEC at the start and end of a by-pass event.

- City of Timmins staff to collect a sample of the actual by-pass effluent and submit

for laboratory analysis.

- After notified by City Staff that the by-pass has concluded, BZEC staff to collect

upstream and downstream samples within the allotted time.

BZEC collected upstream and downstream samples for the June 13, September 5,

October 10 and November 6 by-passes.

AGENDA ITEM #3.b)

2018 Bypass Data - Scott Tam Page 9 of 39

Revision #3 (April 11, 2019)

Public Notification ProcedureFor Sewage By-Pass Events

Whitney-Tisdale Wastewater Treatment Plant including Area Lift Stations

PURPOSE:

The following procedure details the public notification process when bypass event(s) occur in the Tisdale-Whitney sewage distribution system (Porcupine Lake, Porcupine River Area) as co-ordinated by the Wastewater Treatment Department of the Corporation of the City of Timmins.

The outlined procedure shall be initiated in order to notify the public that raw sewage is being bypassed into the waterways.

PROCEDURE FOR BYPASS EVENTS:

Employee responsibilities

1. Employee to immediately notify WWTP Chief Operator or designate.2. Employee to immediately initiate the sampling requirements for a spill or discharge into

the environment.3. Employee to record bypass event in operator log book/sheet.4. If a bypass occurs during the recreation season (between May 1st and September 30th),

the employee is to ensure the bypass notification sign is displayed at the Porcupine Lake Waterpark and Bannerman Park. The notice is to be removed 48 hours after the bypass has ended.

Management responsibilities

1. Chief Operator, or designate, to perform the following step by step notification of bypass:a. Call Spills Action Centre at 1-800-268-6060b. Call Porcupine Health Unit at 705-267-1181

2. Chief Operator, or designate, to provide Spills Action and PHU with the following information :a. Date and time of the bypass event, b. Location of the bypass event (ie Pump Station Number)c. Volume of effluent that was bypassed

3. Post on City of Timmins Website: “Notice of Disruption” of reported spill (on the next business day) with the same reported information above.

Scott TamManager of Environmental Services and Public Utilities

Date

AGENDA ITEM #3.c)

Public Notification Procedure - Scott Page 10 of 39

June 18, 2019

A review was undertaken to assess opportunities to enhance PHU’smonitoring ofPorcupine Lake,and to further support the City of Timmins, and the Ministry ofEnvironment, Conservation and Parks (MECP), in addressing current and historicalconcerns. The assessment of Porcupine Lakesampling included a review ofcurrent procedures and data, relevant legislation, public health documents, andconsultation with other health units. Public Health Ontario was also consultedwith respect to the follow—upand assessment of concerns regarding PorcupineLake.

An enhanced program has been designed to increase data collection and beachassessment to further evaluate historical data for Porcupine Lake, to help informnext steps, in addition to support ongoing monitoring and communication of safebeach use for the public. The review was planned in response to meetings lastyear, and the results are expected to support the City ofTimmins PorcupineWatershed Public Liaison Committee. The PHU remains committed to ensuringhealthy use of this great resource by community members.

Signage (Appendix A) outlining general safe public beach usage will be posted on-site at all public beaches within the Porcupine Health Unit's jurisdiction.

YearsofPublicHealth

Années desanté publique

Head Office:I69 Pine Street South

Postal Bag 2012Timmins,ON PAN 8B7

Phone: 705 267 1 I81Fax: 705 26-4 3980

Toll Free: 800 461 1818

E-mail: [email protected] caWeb site: www.porcupinehu.on.cc:

Branch Offices: Cochrane, Hearst,Hornepoyne, Iroquois Falls,Kapuskosing, Matheson,Moosonee, Smooth Rock Falls

Porcupine LakeExecutive Summary

The purpose of this document is to provide a brief outline the Porcupine HealthUnit's (PHU)enhanced beach management program for Porcupine Lake.The goalof the PHU’sbeach management program is to prevent and reduce water—borneillnesses and injury related to recreational water use in accordance with theMinistry of Health and Long—TermCare's Recreational Water Protocol (1).

Introduction

Prior to the commencement of the 2019 beach season at Porcupine Lake, a moredetailed on—sitebeach assessment will be conducted, which includes the areasurvey, creation of a map for collection sites, and the collection of water samplesto assess water quality. Any hazardous conditions noted at the time of the beachassessment will be highlighted and addressed immediately.

Pre-Season

AGENDA ITEM #3.d)

Updated PHU Sampling Approach - Suzanne Page 11 of 39

AGENDA ITEM #3.d)


AGENDA ITEM #3.d)


http://www.health.gov.on.ca/en/pro/programs/publichealth/oph standards/docs/protocols

te

rotocols guide

lines/Operational Approaches to Rec Water Guideline 2018 en.pdf

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migrationjhea|th\/-

eau/aIt/ndf/watenrecreational—recreative-eau-entz.Ddf

: www. ublichealthontarioca -

htt 5: www,ontario.ca laws statute 90h07

1. Ontario. Ministry of Health and Long—TermCare. Recreational water protocol. Toronto, ON:

Queen's Printer of Ontario; 2018. Available from:

References

guidelines/Recreational Wa r%2OProtoco| 2018 en.odf

htto://www.DorcuDinehu.on.ca/en/vour-mmunitv/safe—water/beachwise—resu|ts/

htto://www.oorcupinehu.on.ca/en/

canadians/Dublications/hea|thv—|iving—vie-saine/water-recreationa|—recreative—

2. Ontario. Ministry of Health and Long—TermCare. Operational approaches for recreationalwater guideline, 2018. Toronto, ON: Queen's Printer of Ontario; 2018. Available from:http://hea|th.gov.on.ca/en/pro/programs/publichealth/oph standards/docs/p_

3. Porcupine Health Unit [Internet]. Porcupine BeachWise. Available from

4. Porcupine Health Unit [Internet]. Porcupine Health Unit. Available from

7. Public Health Ontario. Public health inspector's guide to environmental microbiologylaboratory testing. 5”‘ed. [Internet]. Toronto, ON: Queen's Printer of Ontario; 2017. Availabl

efrom:

8. Health Protection and Promotion Act, RSO 1990, c. H.7. Available from

5. Porcupine Health Unit [Internet]. Porcupine Health Unit Facebook. Available fromhttps://www.facebook.com/vourPHU/

6. Health Canada. Guidelines for Canadian Recreational Water Quality. 3”‘ed. [Internet]

Ottawa, ON: Health Canada Publications; 2012. Available from:https://www.canada.ca/content/dam/canada/hea|th-canada/

AGENDA ITEM #3.d)


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Appendix A:Notice: Swim with Confidence igns

AGENDA ITEM #3.d)


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Appendix B:Public BeachSurveillance Field Report (Page 1

Public Beach Surveillance Field Report

Beach Name: Posted at Time of Sampling: D Yes C!No

Surveyor Name: Beach IDnumber‘.

Date of Sampling: Time of Sampling

Part 1: General Beach Conditions

Air Temperature: Cl °C |'_'l°F Water Temperature: C] “C l.'_1°F

Rain Intensity: Rainfall:

El Light [<25 mm/hr] III <24 hours cm rainfall reported

El Medium (2.6-7.5 mm/hr) El <48 hours cm rainfall reported

El Heavy (>7mm/hr) El <72 hours cm rainfall reported

El None El >72 hours cm rainfall reported

Water Clarity: Beach Material:

El <100 cm Cl Sandy

El >‘100cm El Mucky

Value [NTU): El Rocky

D Other [specify]:

Sky Conditions: Wind Direction:

El Sunny El None

CI Mostly Sunny ElAway from Shore

C! Partly Cloudy D Toward Shore

El Mostly Cloudy El Parallel to Shore

Cl Overcast

Wave Height (cm): Wind Speed (km/hr]:

Subsurface Conditions:

Does the bottom consist of material that is easily stirred up? El Yes D No

Are the slopes gentle? ClYes El No

Is the bottom free of large rocks.sharp objects and other obstructions? El Yes El No

Is the bottom free of weeds? El Yes El No

Is the beach susceptible to undertows or rip currents? CIYes E!No

AGENDA ITEM #3.d)


AGENDA ITEM #3.d)


UNAFEFORBATHING

%.

Appendix C

Warning: Unsafe for Bathing Signs

3 AUI PROR ALABAIGNADmanLEVELSOFBACTERMm LESNIVEAUXELEVESDEBACTERIESTHESEwA1'EnsMAYposg A DANSCESEAUXPEUVENTPOSER

|-|EA|_n-|_ UNRISQUEAVOTRESANTE.

For more information, call your localhealth inspector or 1-800-481-1818.

www.pnrcupinehu.on.caHum»!-an-udnanb

Puuruhtenirdaplusamplasransaignaments,communique:am |'inspenleurIlesantépuhliq

uedevolrelucalité.nuappelezau1 lill?-461-1818.www.porcupInehu.on.ca

AGENDA ITEM #3.d)


June 2019 Newmont Goldcorp I Porcupine Watershed Public Liaison Committee 1

Porcupine Watershed Public Liaison CommitteeJune 2019

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A ITEM #4.a)

Presentation on Mining Effluent Effects - Stephanie

Page 19 of 39


Metal and Diamond Mine Effluent

Regulations

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Page 20 of 39


Metal and Diamond Mine Effluent Regulations

• The Metal and Diamond Mining Effluent Regulations, SOR-2002-222 (MDMER) under the Fisheries

Act, R.S.C. 1985 (section 34, 36, 38) fall under the jurisdiction of Environment and Climate Change

Canada (ECCC)

• MDMER is designed to protect fish and fish habitat from effects in receiving waters due to the release

of effluent from a metal mine, diamond mine or milling facility

• MDMER apply to a facility with an effluent flow rate of > 50 m3/day

• MDMER currently apply to ~110 facilities across Canada

• MDMER apply to new or reopened mines or once construction begins

• MDMER continue to apply until specified conditions are met to become a recognized closed mine

Note: The regulatory requirements listed in this document are current only to the date of publishing. These are excerpts

which are known to be applicable to Newmont Goldcorp, Porcupine.

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• MDMER requires:

‒ Effluent quality monitoring on a weekly basis including

pH, arsenic, copper, cyanide, lead, nickel, zinc,

suspended solids, radium-226 and ammonia (recently

added)

‒ Acute lethality testing from effluent conducted on a

monthly basis for rainbow trout and Daphnia magna

‒ Sublethal testing conducted twice per year

‒ Effluent characterization and water quality monitoring

conducted four times per year

‒ Environmental effects monitoring (EEM) study to

monitor the effects of effluent discharge on receiving

waters using:

‒ fish population survey

‒ mercury in fish tissue (if concentration is >0.1ug/L)

‒ benthic invertebrate community survey

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• Summary annual reports are submitted electronically to the Authorization Officer (AO) no later than

March 31 in each year

• Reports on deposits out of the normal course of events must be submitted to the AO within 30 days

of the occurrence

• Effluent quality monitoring results are submitted electronically through the Mine Effluent Reporting

System (MERS)

• Mines are required to conduct biological monitoring studies to assess effects on fish, fish habitat and

the use of fisheries resources

• If effects are identified, subsequent EEM studies would be more intensive to determine magnitude,

extent and cause of effects

• If there are no effects, then frequency of monitoring activities may be reduced

• Once an effect has been identified and magnitude, extent and possible causes are known, follow up

actions are determined on a site-specific basis by ECCC

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PGM Environmental Effects Monitoring

• The following Porcupine Gold Mines (PGM)

sites fall under MDMER:

‒ Dome Mine - ETP and MWSP (Cycle V)

‒ Owl Creek Pit - OCPII (Cycle V)

‒ Pamour Mine - PM122 (Cycle IV)

‒ Hollinger Mine - LPMW (Cycle I)

• EEM studies are conducted by Minnow

Environmental

• Most recent sampling occurred May 2016

(aquatic) and September 2016 (benthic)

• EEM Study Report was submitted to ECCC

and MECP June 2017

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PGM Environmental Effects Monitoring

• Results for the Dome Mine EEM Study indicate:

‒ After 110 years of active mining in the area

that there may be limited effects in the near-

field receiving environment

‒ Due to external factors such as temperature,

flow, nutrients, predators, results are

inconclusive and the ECCC recommends

continued periodic monitoring as per the

required cycles

• Next Steps:

‒ The most recent EEM Study Design was

prepared and submitted December 2018

‒ The next sampling program is schedule to

be conducted spring / fall of 2019

‒ The final EEM Report will be submitted to

ECCC and MECP by June 2020

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Page 25 of 39


Tailings Stewardship

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Canadian Dam Association

• The Canadian Dam Association (CDA) is a group of dam owners, operators, regulators, engineers

and others who share the goal of advancing knowledge and practices related to dams

• The members are involved with all types of dams, including those for irrigation, hydroelectric power,

municipal water supply and mining operations

• CDA Vision – A future in which all dams are safe, well-managed and benefit society

• CDA Mission – To encourage co-operation, advance technical knowledge and build competency

related to dams in Canada

• The CDA was formed in 1998 through merger with CANCOLD (formed in 1950’s)

• The CDA is a member on the International Commission on Large Dams (ICOLD)

• ~50 sustaining and corporate members

• ~800 individual members (i.e. memberships)

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• In general terms, a “dam” is a barrier constructed for retention of water, fluid waste or tailings

• There are over 10,000 dams in Canada

• Ownership by

‒ Federal and provincial governments

‒ Electric utilities

‒ Industrial and mining companies

‒ Irrigation districts

‒ Municipalities

‒ Private individuals

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• Regulatory framework for dam safety is mainly a provincial or territorial responsibility

‒ Regulations exist in Ontario under MNRF, MECP, MENDM

‒ Some provinces rely on legislation related to water resources

• There are no federal regulatory agency or overarching program

• Main Dam Safety Guidance Document – issued in 2007 and revised in 2013

• Subsequent supporting bulletins and guidelines

‒ Application of Dam Safety Guidelines to Mining Dams (2014)

‒ Technical bulletin on Environmental Design Flood, Geotechnical items and Closure (2014)

‒ Guidelines for Public Safety Around Dams (2011)

‒ Technical bulletins on dam safety topics (2007)

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PGM Tailings Stewardship

• The Dome Mine No.6 Tailings Management Area

(TMA) started construction in 1982 and is currently

operational

• History of Engineer of Records (EOR):

‒ Mine Tailings International Ltd. (MTI) – 1982-1935

‒ Dennis Netherton Engineering (DNE) – 1985-1992

‒ Klohn Leonoff Ltd./Klohn-Crippen Consultants Ltd.

– 1992-2004

‒ Golder Associates Ltd. – 2004-2011

‒ BGC Engineering – 2012-present AG

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The current EOR, assists with:

‒ Design of the dams

‒ Quality assurance during construction

‒ Review and comment on instrumentation

and monitoring

‒ Conduct annual inspections

‒ Update No.6 TMA Water Balance

‒ Update Tailings Deposition Plan

‒ Update Operating, Maintenance and

Surveillance Manual

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• How is No.6 TMA engineered and constructed?

‒ Upstream dam raise (historical method)

‒ Downstream dam raise (current method)

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• Design Basis - Canadian Dam Association Guidelines (2014)

‒ Contain the Environmental Design Flood (EDF): 30-day, 1:100 year return period of rain and

snow meld (equivalent rainfall depth of 486 mm)

‒ Pass the Probable Maximum Flood (PMF) without overtopping: 6-hr Probably Maximum

Precipitation (PMP) immediately following EDF (rainfall depth of 405 mm)

‒ Freeboard: wind setup and wave run-up (1000-yr wind) reservoir at normal maximum operating

level

‒ Earthquake: 10,000-yr ground motion, 7.5 M

‒ Factor of Safety: long-term steady stage of 1.5

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• Online monitoring, daily inspections

• Annual design reviews with MNRF and MENDM

• Annual construction records to MNRF and MENDM

• Annual Performance Report to MECP

• Annual Dam Safety Inspections by EOR

• Annual Tailings Stewardship Program reviews by

Corporate

• Annual mock testing of the Emergency Response

Plan

• 2-year Operating, Maintenance and Surveillance

Manual updates

• 2-year Tailings Deposition Planning updates

• 3-year Towards Sustainable Mining audits by Mining

Association of Canada

• 5-year Dam Safety Reviews by EOR

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Key Contacts

Bryan Neeley

Sustainability Manager

[email protected]

Stephanie Thibeault

Sr. Environmental Coordinator

[email protected]

Community Feedback Protocol

Phone: 705-235-6589

Fax: 705-235-6551

Email: [email protected]

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Laboratory AnalysisSamples taken in March 2019

Units Barn Arena Highway 655 Gervais Algonquin Dalton Canadian Water Quality GuidelinesPH 5.56 8.00 8.39 7.61Chloride mg/L < 1 14.8 689 10 121.5 3Conductivity µs/cm 5 102 2010 80Oil & Grease mg/L < 1 4 2 1

120no data

no datano data

Parameter Reference AreaSnow Dump Location Road samples

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Results of Snow

and Salt Study - AngiePage 36 of 39


Units PWQOCanadian Water Quality Guidelines

Aluminum mg/L 0.017 29.6 1.11 ‐ ‐Antimony mg/L < 0.0005 0.0006 0.0006 0.02 ‐Arsenic mg/L < 0.001 0.026 0.002 0.1 0.005Barium mg/L < 0.001 0.33 0.055 ‐ ‐Beryllium mg/L < 0.0005 0.0009 < 0.0005 ‐ ‐Bismuth mg/L < 0.001 < 0.001 0.003 ‐ ‐Boron mg/L < 0.002 0.028 0.007 0.2 1.5

Cadmium mg/L < 0.0001 0.003 0.0001 0.0002 0.0009Calcium mg/L 0.13 70.1 22.8 ‐ ‐Cerium mg/L < 0.001 0.15 0.011 ‐ ‐Cesium mg/L < 0.001 0.002 < 0.001 ‐ ‐

Chromium (VI) mg/L < 0.001 0.14 0.006 0.001 0.001Cobalt mg/L < 0.0001 0.0857 0.0089 0.0009 ‐Copper mg/L < 0.001 0.29 0.024 0.005 ‐Europium mg/L < 0.001 0.002 < 0.001 ‐ ‐Gallium mg/L < 0.001 0.02 0.002 ‐ ‐Iron mg/L 0.04 56.2 2.16 0.3 0.3

Lanthanum mg/L < 0.001 0.073 0.005 ‐ ‐Lead mg/L 0.0003 0.19 0.0041 ‐ ‐

Lithium mg/L < 0.005 0.037 < 0.005 ‐ ‐Magnesium mg/L 0.024 35.9 3.36 ‐ ‐Manganese mg/L 0.002 2.25 0.148 ‐ ‐Mercury mg/L < 0.0001 < 0.0001 < 0.0001 0.0002 0.000026

Molybdenum mg/L < 0.001 < 0.001 < 0.001 0.04 0.073Nickel mg/L < 0.001 0.31 0.011 0.025 ‐Niobium mg/L < 0.001 < 0.001 < 0.001 ‐ ‐

Phosphorus mg/L < 0.05 2.14 0.166 ‐ ‐Potassium mg/L < 0.1 5.3 0.769 ‐ ‐Rubidium mg/L < 0.001 0.045 0.003 ‐ ‐Scandium mg/L < 0.001 0.01 < 0.001 ‐ ‐

Parameter

Water Quality Legislation

Reference Area Barn Arena Highway 655

Snow Dump Location

AG

END

A ITEM #4.d)

Results of Snow



Units PWQOCanadian Water Quality GuidelinesParameter

Water Quality Legislation

Reference Area Barn Arena Highway 655

Snow Dump Location

Selenium mg/L < 0.0005 0.0007 < 0.0005 0.1 0.001Silicon mg/L < 0.6 21 1.28 ‐ ‐Silver mg/L < 0.0001 0.0002 < 0.0001 0.0001 0.00025Sodium mg/L < 0.1 1.2 294 ‐ ‐

Strontium mg/L < 0.001 0.106 0.073 ‐ ‐Sulfur mg/L < 0.8 0.8 3.85 ‐ ‐

Tellurium mg/L < 0.001 < 0.001 < 0.001 ‐ ‐Thallium mg/L < 0.0001 0.0007 < 0.0001 0.0003 0.0008Thorium mg/L < 0.001 0.003 < 0.001 ‐ ‐

Tin mg/L < 0.001 < 0.001 < 0.001 ‐ ‐Titanium mg/L < 0.001 0.9 0.048 ‐ ‐Tungsten mg/L < 0.001 0.001 0.001 0.03 ‐Uranium mg/L < 0.001 0.002 < 0.001 0.005 0.015Vanadium mg/L < 0.001 0.09 0.004 0.006 ‐Yttrium mg/L < 0.001 0.021 0.002 ‐ ‐Zinc mg/L 0.003 1.19 0.05 0.03 0.007

Zirconium mg/L < 0.001 0.004 0.002 0.004 ‐

AG

END

A ITEM #4.d)

Results of Snow


Field Parameters Averages calculated

Samples taken in March 2019

RoadsUnits Reference Area Barn Arena Highway 655 Gervais Road Dalton Rd. Algonquin PWQO Canadian Water Quality Guidelines

Salinity ppm 15.96 105.95 3628.29 1169.94 132.37 245.33 No DataConductivity µs/cm 49.60 225.90 7591.10 1350.00 225.60 510.30 No Data

pH 5.56 8.04 8.26 7.61 7.64 7.98 6.5‐9

***0.000035ppm (salinity of the ocean)

6.5‐9

ParameterSnow Dump Location Water Quality Legislation

No DataNo Data

AG

END

A ITEM #4.d)

Results of Snow


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