March 2016March 2016Environmental Update Environmental Update

f SLEMA B df SLEMA B dfor SLEMA Boardfor SLEMA BoardZhong LiuZhong LiuZhong LiuZhong Liu

March 31, 2016March 31, 2016

OutlineOutlineOutlineOutline1.1. Mine UpdateMine Update2.2. Inspection UpdateInspection Update3.3. Regulators’ UpdateRegulators’ Update3.3. Regulators UpdateRegulators Update4.4. Aboriginal UpdateAboriginal Update55 Stakeholders’ UpdateStakeholders’ Update5.5. Stakeholders’ UpdateStakeholders’ Update6.6. Agency’s ActivitiesAgency’s Activities7.7. SLEMA ReviewsSLEMA Reviews

AcronymsAcronyms AEMPAEMP Aquatic Effects Monitoring ProgramAquatic Effects Monitoring Program AEMP AEMP –– Aquatic Effects Monitoring ProgramAquatic Effects Monitoring Program ARD ARD –– Acid Rock DrainageAcid Rock Drainage DFO DFO –– Fisheries and Oceans CanadaFisheries and Oceans Canada ECEC –– Environment CanadaEnvironment Canada EC EC Environment CanadaEnvironment Canada ENR ENR –– Department of Environment and Natural Resources, GNWTDepartment of Environment and Natural Resources, GNWT EQC EQC –– Effluent Quality CriterionEffluent Quality Criterion GNWT GNWT –– Government of the Northwest TerritoriesGovernment of the Northwest Territories MVEIRB MVEIRB –– Mackenzie Valley Environmental Impact Review BoardMackenzie Valley Environmental Impact Review Board MVLWB MVLWB –– Mackenzie Valley Land and Water BoardMackenzie Valley Land and Water Board PK PK –– Processed Processed KimberliteKimberlite SLEMA SLEMA –– Snap Lake Environmental Monitoring AgencySnap Lake Environmental Monitoring Agency SNP SNP –– Surveillance Network ProgramSurveillance Network Program SSWQO SSWQO –– SiteSite--Specific Water Quality ObjectiveSpecific Water Quality Objective TDSTDS T t l Di l d S lidT t l Di l d S lid TDS TDS –– Total Dissolved SolidsTotal Dissolved Solids WEMP WEMP –– Wildlife Effects Monitoring ProgramWildlife Effects Monitoring Program WTP WTP –– Water Treatment PlantWater Treatment Plant WMPWMP –– Water Management PondWater Management Pond WMP WMP –– Water Management PondWater Management Pond

1.1 Mine Update1.1 Mine Update –– February 2016February 20161.1 Mine Update 1.1 Mine Update February 2016February 2016 Production rate: 0% of its capacity (0 Production rate: 0% of its capacity (0 tonnestonnes of of kimberlitekimberlite

processed)processed)processed)processed) 3,283 m3,283 m33 of water withdrawn from Snap Lake of water withdrawn from Snap Lake 1,384,595 m1,384,595 m33 of treated water discharged into Snap of treated water discharged into Snap

LakeLake 0 0 tonnestonnes of coarse reject and 0 mof coarse reject and 0 m33 of slimes deposited in of slimes deposited in

the North Pilethe North Pile No reportable spillsNo reportable spills Water sampled in 7 monitoring stations Water sampled in 7 monitoring stations

Th thl f ll t t liTh thl f ll t t li The monthly average for all parameters met complianceThe monthly average for all parameters met compliance Acute and chronic toxicity tests were performed. There were no Acute and chronic toxicity tests were performed. There were no

adverse effects in any tests. Chronic adverse effects in any tests. Chronic C. C. dubiadubia and algae toxicity and algae toxicity t t f d At t f d A lidlid h i l t i it t th i l t i it t ttests were performed. A tests were performed. A validvalid chronic algae toxicity test was chronic algae toxicity test was performed, and showed no adverse effects on algae growthperformed, and showed no adverse effects on algae growth

1 2 Community Engagement Plan1 2 Community Engagement Plan1.2 Community Engagement Plan1.2 Community Engagement Plan Submitted on March 1, 2016Submitted on March 1, 2016

De Beers will continue to work closely with De Beers will continue to work closely with our stakeholders and impacted communities our stakeholders and impacted communities d i thi i d t ti i t d dd i thi i d t ti i t d dduring this period to optimize an extended during this period to optimize an extended care and maintenance scenario to allow care and maintenance scenario to allow sufficient time to evaluate economic optionssufficient time to evaluate economic optionssufficient time to evaluate economic options sufficient time to evaluate economic options and conditions for Snap Lake Mineand conditions for Snap Lake Mine

This plan describes the methods by which DeThis plan describes the methods by which De This plan describes the methods by which De This plan describes the methods by which De Beers will undertake Engagement on key Beers will undertake Engagement on key topics related to the water topics related to the water licencelicence and land and land ppuse permit(s) inclusive of this Care and use permit(s) inclusive of this Care and Maintenance periodMaintenance period

1.3 2014 Environmental 1.3 2014 Environmental Agreement Annual ReportAgreement Annual Report

Submitted on March 4 2014Submitted on March 4 2014 Submitted on March 4, 2014Submitted on March 4, 2014 This annual report satisfies the requirements This annual report satisfies the requirements

of the Environmental Agreement and providesof the Environmental Agreement and providesof the Environmental Agreement and provides of the Environmental Agreement and provides a summary of the monitoring activities and a summary of the monitoring activities and results from 2014 results from 2014

1 4 2015 WEMP and WWHPP1 4 2015 WEMP and WWHPP1.4 2015 WEMP and WWHPP1.4 2015 WEMP and WWHPP

Wildlife Effects Monitoring Program 2015Wildlife Effects Monitoring Program 2015Wildlife Effects Monitoring Program 2015 Wildlife Effects Monitoring Program 2015 Annual Report (2015 WEMP)Annual Report (2015 WEMP)

Wildlife and Wildlife Habitat ProtectionWildlife and Wildlife Habitat ProtectionWildlife and Wildlife Habitat Protection Wildlife and Wildlife Habitat Protection Plan DRAFT 2015 Annual Report (2015 Plan DRAFT 2015 Annual Report (2015 WWHPP)WWHPP)WWHPP)WWHPP) Submitted on March 31, 2016Submitted on March 31, 2016

2 Inspection Update2 Inspection Update2. Inspection Update 2. Inspection Update

Inspector Inspector –– Jamie SteeleJamie SteeleppNo Inspection Reports in March 2016No Inspection Reports in March 2016

3 Regulators’ Update3 Regulators’ Update –– MVLWB (I)MVLWB (I)3. Regulators Update 3. Regulators Update MVLWB (I) MVLWB (I) Invited reviewers to submit comments on Invited reviewers to submit comments on

E t Pl M h 8 2016E t Pl M h 8 2016Engagement Plan, on March 8, 2016Engagement Plan, on March 8, 2016 Comments due on March 30, 2016Comments due on March 30, 2016

4 Aboriginal Update4 Aboriginal Update4. Aboriginal Update4. Aboriginal Update

No comments received in March 2016No comments received in March 2016No comments received in March 2016No comments received in March 2016

5 Stakeholders’ Update5 Stakeholders’ Update5. Stakeholders Update5. Stakeholders Update

DFO commented theDFO commented the Downstream WatercoursesDownstream Watercourses DFO commented the DFO commented the Downstream Watercourses Downstream Watercourses Special Study Plan Year 2 on March 2, 2016Special Study Plan Year 2 on March 2, 2016

EC and ENR commented theEC and ENR commented the DownstreamDownstream EC and ENR commented the EC and ENR commented the Downstream Downstream Watercourses Special Study Plan Year 2 on Watercourses Special Study Plan Year 2 on March 3March 3

EC and ENR commented theEC and ENR commented the Cesium and Cesium and Thallium Response Plan on March 7Thallium Response Plan on March 7

ENR commented theENR commented the Engagement Plan on Engagement Plan on March 30March 30

5.1 5.1 DFO Comments on DFO Comments on Downstream Downstream W t S i l St d Pl Y 2W t S i l St d Pl Y 2Watercourses Special Study Plan Year 2Watercourses Special Study Plan Year 2No commentsNo commentsNo commentsNo comments

5.2 5.2 EC Comments on EC Comments on Downstream Downstream W t S i l St d Pl Y 2 (I)W t S i l St d Pl Y 2 (I)Watercourses Special Study Plan Year 2 (I)Watercourses Special Study Plan Year 2 (I)

Total metals analysis is currently includedTotal metals analysis is currently included Total metals analysis is currently included Total metals analysis is currently included only in the fall and underonly in the fall and under--ice water quality ice water quality sampling programs In order tosampling programs In order tosampling programs. In order to sampling programs. In order to characterize natural variability more fully characterize natural variability more fully (including seasonal variability) total(including seasonal variability) total(including seasonal variability), total (including seasonal variability), total metals analysis should be included in all metals analysis should be included in all seasonal water quality sampling programsseasonal water quality sampling programsseasonal water quality sampling programs, seasonal water quality sampling programs, including freshet, spring, early summer, including freshet, spring, early summer, and late summerand late summerand late summerand late summer

5.2 5.2 EC Comments on EC Comments on Downstream Downstream W t S i l St d Pl Y 2 (II)W t S i l St d Pl Y 2 (II)Watercourses Special Study Plan Year 2 (II)Watercourses Special Study Plan Year 2 (II)

The Proponent should: a.The Proponent should: a. Develop a summary tableDevelop a summary table thatthat The Proponent should: a. The Proponent should: a. Develop a summary tableDevelop a summary table that that combines Year 1 and Year 2 water quality sampling, combines Year 1 and Year 2 water quality sampling, including locations, frequencies and parameters; b. including locations, frequencies and parameters; b. Identify sampling differences and data gapsIdentify sampling differences and data gaps with respectwith respectIdentify sampling differences and data gapsIdentify sampling differences and data gaps with respect with respect to locations, frequencies and parameters; c. to locations, frequencies and parameters; c. Evaluate the Evaluate the impact of these sampling differences and data gapsimpact of these sampling differences and data gaps on: on: ii) defining natural water quality variability (both spatially ) defining natural water quality variability (both spatially and temporally) downstream of Snap Lake, and ii) and temporally) downstream of Snap Lake, and ii) updating the water quality models downstream of Snapupdating the water quality models downstream of Snapupdating the water quality models downstream of Snap updating the water quality models downstream of Snap Lake; and d. Identify which sampling differences and Lake; and d. Identify which sampling differences and data gaps must be addressed in order to achieve the data gaps must be addressed in order to achieve the purpose of the Downstream Watercourses Special Studypurpose of the Downstream Watercourses Special Studypurpose of the Downstream Watercourses Special Study purpose of the Downstream Watercourses Special Study (i.e., define natural variability and update models) and (i.e., define natural variability and update models) and develop a plan to address any such gaps in upcoming develop a plan to address any such gaps in upcoming

5.2 5.2 EC Comments on EC Comments on Downstream Downstream W t S i l St d Pl Y 2 (III)W t S i l St d Pl Y 2 (III)Watercourses Special Study Plan Year 2 (III)Watercourses Special Study Plan Year 2 (III)

Table 3 of the Proposed Study Plan indicatesTable 3 of the Proposed Study Plan indicates Table 3 of the Proposed Study Plan indicates Table 3 of the Proposed Study Plan indicates that water quality sampling will be conducted at that water quality sampling will be conducted at Node 22 and Node 11 during Node 22 and Node 11 during early summer, fall, early summer, fall, gg yyand underand under--iceice. Due to safety concerns, Node 22 . Due to safety concerns, Node 22 and Node 11 will not be sampled during freshet and Node 11 will not be sampled during freshet

i Th b M K L k i l t ill bi Th b M K L k i l t ill bor spring. The nearby MacKay Lake inlet will be or spring. The nearby MacKay Lake inlet will be sampled during sampled during freshet, fall, and underfreshet, fall, and under--iceice. To . To enable seasonal comparison between theseenable seasonal comparison between theseenable seasonal comparison between these enable seasonal comparison between these three sites, the MacKay Lake inlet should also three sites, the MacKay Lake inlet should also be sampled during early summerbe sampled during early summerp g yp g y

5.3 5.3 ENR Comments on ENR Comments on Downstream Downstream W t S i l St d Pl Y 2 (I)W t S i l St d Pl Y 2 (I)Watercourses Special Study Plan Year 2 (I) Watercourses Special Study Plan Year 2 (I)

ENR recommends that the water quality data beENR recommends that the water quality data be ENR recommends that the water quality data be ENR recommends that the water quality data be used to describe the used to describe the seasonality of water quality seasonality of water quality conditionsconditions, rather than relying on pre, rather than relying on pre--defined defined y g py g p“seasons.” Statistical analyses should be used to “seasons.” Statistical analyses should be used to detect the appropriate seasonal breakdownsdetect the appropriate seasonal breakdowns

ENR recommends that information is required ENR recommends that information is required on the on the locations of sampling stationslocations of sampling stations for the for the 2015 d 2016 t f th DSW2015 d 2016 t f th DSW SSSS2015 and 2016 components of the DSW2015 and 2016 components of the DSW--SS. SS. Wherever possible, the station locations should Wherever possible, the station locations should be kept the same to ensure data consistencybe kept the same to ensure data consistencybe kept the same to ensure data consistency be kept the same to ensure data consistency and comparability between yearsand comparability between years

5.3 5.3 ENR Comments on ENR Comments on Downstream Downstream W t S i l St d Pl Y 2 (II)W t S i l St d Pl Y 2 (II)Watercourses Special Study Plan Year 2 (II) Watercourses Special Study Plan Year 2 (II)

ENR recommends that water quality data collected inENR recommends that water quality data collected in ENR recommends that water quality data collected in ENR recommends that water quality data collected in 2015 be evaluated to determine if significant 2015 be evaluated to determine if significant relationships between conductivity and TDS are evident relationships between conductivity and TDS are evident for key sampling stations (e g LCB Inlet 1; LCB Outletfor key sampling stations (e g LCB Inlet 1; LCB Outletfor key sampling stations (e.g., LCB Inlet 1; LCB Outlet for key sampling stations (e.g., LCB Inlet 1; LCB Outlet 1; King01; MCKY1; King01; MCKY--IN; etc.). If the relationship between IN; etc.). If the relationship between conductivity and TDS is not strong or is variable conductivity and TDS is not strong or is variable depending on the station location, it should not be used depending on the station location, it should not be used for the DSWfor the DSW--SS designSS design

ENR recommends that the study plan for 2016/17 beENR recommends that the study plan for 2016/17 be ENR recommends that the study plan for 2016/17 be ENR recommends that the study plan for 2016/17 be revised to clarify if it will fill in data gaps from 2015/16 revised to clarify if it will fill in data gaps from 2015/16 and how it will handle the assessment of existing water and how it will handle the assessment of existing water

lit t th l ti if li i i d thilit t th l ti if li i i d thiquality at these locations if sampling is missed this yearquality at these locations if sampling is missed this year

5.3 5.3 ENR Comments on ENR Comments on Downstream Downstream W t S i l St d Pl Y 2 (III)W t S i l St d Pl Y 2 (III)Watercourses Special Study Plan Year 2 (III) Watercourses Special Study Plan Year 2 (III)

ENR recommends that sampling during freshet includeENR recommends that sampling during freshet include ENR recommends that sampling during freshet include ENR recommends that sampling during freshet include collecting five water samples during the 30 days when collecting five water samples during the 30 days when water levels are increasing. It is recommended that this water levels are increasing. It is recommended that this approach be used to characterize natural variability inapproach be used to characterize natural variability inapproach be used to characterize natural variability in approach be used to characterize natural variability in water quality conditions during freshet at DSL2 Outlet, water quality conditions during freshet at DSL2 Outlet, LCB Inlet 1, Lac Cabot Blanc, DSLB, King01, Mackay LCB Inlet 1, Lac Cabot Blanc, DSLB, King01, Mackay Lake Inlet, Node 22, and Mackay Lake WestLake Inlet, Node 22, and Mackay Lake West

ENR recommends that, at a minimum, sampling should ENR recommends that, at a minimum, sampling should occur during five seasons which include freshet springoccur during five seasons which include freshet springoccur during five seasons which include freshet, spring, occur during five seasons which include freshet, spring, early and late summer, fall, and winter (under ice) at early and late summer, fall, and winter (under ice) at each sampling station listed in Table 3. This will ensure each sampling station listed in Table 3. This will ensure

i t d bilit b t lii t d bilit b t liconsistency and comparability between sampling consistency and comparability between sampling programsprograms

5.3 5.3 ENR Comments on ENR Comments on Downstream Downstream W t S i l St d Pl Y 2 (IV)W t S i l St d Pl Y 2 (IV)Watercourses Special Study Plan Year 2 (IV) Watercourses Special Study Plan Year 2 (IV)

ENR recommends that the proposed studyENR recommends that the proposed study ENR recommends that the proposed study ENR recommends that the proposed study plan include benchmarks that would need plan include benchmarks that would need to be exceeded to prompt analysis of theto be exceeded to prompt analysis of theto be exceeded to prompt analysis of the to be exceeded to prompt analysis of the archived samples (dissolved metals)archived samples (dissolved metals)

ENR recommends that a table be includedENR recommends that a table be included ENR recommends that a table be included ENR recommends that a table be included that identifies all of the that identifies all of the analytesanalytes that will be that will be measured and presents the target levels ofmeasured and presents the target levels ofmeasured and presents the target levels of measured and presents the target levels of accuracy, precision, sensitivity (i.e., accuracy, precision, sensitivity (i.e., detection limits) and completeness for thedetection limits) and completeness for thedetection limits) and completeness for the detection limits) and completeness for the DSWDSW--SSSS

5.3 5.3 ENR Comments on ENR Comments on Downstream Downstream W t S i l St d Pl Y 2 (V)W t S i l St d Pl Y 2 (V)Watercourses Special Study Plan Year 2 (V) Watercourses Special Study Plan Year 2 (V)

ENR recommends that the relevance andENR recommends that the relevance and ENR recommends that the relevance and ENR recommends that the relevance and intended use of data collected at intended use of data collected at CamsellCamsell Lake, Lake, Northeast Lake and Lake 13 need to be Northeast Lake and Lake 13 need to be described in the study plandescribed in the study plan

ENR recommends that the procedures that will ENR recommends that the procedures that will be used to estimate natural variability in water be used to estimate natural variability in water quality conditions be included in the proposed quality conditions be included in the proposed t d l f 2016t d l f 2016study plan for 2016study plan for 2016

ENR recommends that a data inventory be ENR recommends that a data inventory be preparedpreparedpreparedprepared

5.4 ECCC Comments on Cesium 5.4 ECCC Comments on Cesium d Th lli R Pl (I)d Th lli R Pl (I)and Thallium Response Plan (I)and Thallium Response Plan (I)

As per ECCC's clarification with the Proponent (via emailAs per ECCC's clarification with the Proponent (via email As per ECCC s clarification with the Proponent (via email As per ECCC s clarification with the Proponent (via email correspondence during June 2015), source numbers correspondence during June 2015), source numbers should be provided in the next round of reporting (2017; should be provided in the next round of reporting (2017; after next fish and other analytical data are available) ifafter next fish and other analytical data are available) ifafter next fish and other analytical data are available) if after next fish and other analytical data are available) if the increasing trend in cesium and thallium in fish tissues the increasing trend in cesium and thallium in fish tissues continuescontinues

The proposed Benthos and The proposed Benthos and EpilithicEpilithic Algae Sampling Algae Sampling Plan (Appendix D) appears to be a reasonable approach Plan (Appendix D) appears to be a reasonable approach to initiate the evaluation of cesium and thalliumto initiate the evaluation of cesium and thalliumto initiate the evaluation of cesium and thallium to initiate the evaluation of cesium and thallium concentrations in aquatic invertebrates and aquatic concentrations in aquatic invertebrates and aquatic vegetation. Investigations should be expanded vegetation. Investigations should be expanded

di l if it i lt i di t i idi l if it i lt i di t i i l t dl t daccordingly if monitoring results indicate miningaccordingly if monitoring results indicate mining--related related impactsimpacts

5.4 ECCC Comments on Cesium 5.4 ECCC Comments on Cesium d Th lli R Pl (II)d Th lli R Pl (II)and Thallium Response Plan (II)and Thallium Response Plan (II)

OnOn--going monitoring results should be incorporated into going monitoring results should be incorporated into f ti t l d ti ti th d i d tf ti t l d ti ti th d i d tforecasting tools and estimation methods in order to forecasting tools and estimation methods in order to evaluate and update predictions. Future versions of this evaluate and update predictions. Future versions of this Response Plan and reporting under this Plan should Response Plan and reporting under this Plan should provide updated models and estimates (including tissue, provide updated models and estimates (including tissue, sediment, aquatic biota, and water quality models, and sediment, aquatic biota, and water quality models, and loading estimates)loading estimates)loading estimates)loading estimates)

Current research findings should be incorporated into future Current research findings should be incorporated into future versions of the Response Plan, particularly with respect to versions of the Response Plan, particularly with respect to fate and toxicity of these chemicalsfate and toxicity of these chemicals

Throughout the document, any reference to a benchmark Throughout the document, any reference to a benchmark that has been derived by the Proponent should be identifiedthat has been derived by the Proponent should be identifiedthat has been derived by the Proponent should be identified that has been derived by the Proponent should be identified as such. In these cases, incorporate clarification such as such. In these cases, incorporate clarification such asas ProponentProponent--derivedderived when referring to the benchmarkwhen referring to the benchmark

5.4 ECCC Comments on Cesium 5.4 ECCC Comments on Cesium d Th lli R Pl (III)d Th lli R Pl (III)and Thallium Response Plan (III)and Thallium Response Plan (III)

The response to the questionThe response to the question Will these concentrations Will these concentrations harm humans eating fish?harm humans eating fish? should be modified to include should be modified to include clarification, as per the following suggested wording, so the clarification, as per the following suggested wording, so the ProponentProponent--derived benchmarks will not be misinterpreted as derived benchmarks will not be misinterpreted as pp ppestablished benchmarks: "....established benchmarks: "....AA ProponentProponent--derivedderived concentration of thallium in fish tissue above which concentration of thallium in fish tissue above which thallium concentrations could be harmful to humans orthallium concentrations could be harmful to humans orthallium concentrations could be harmful to humans or thallium concentrations could be harmful to humans or wildlife was calculated using available data from the wildlife was calculated using available data from the scientific literature. Thisscientific literature. This ProponentProponent--derivedderived value is 0.66 value is 0.66 milligrams of thallium per kilogram of wet tissue, or mg/kg milligrams of thallium per kilogram of wet tissue, or mg/kg wet weight. The maximum concentration measured in fish wet weight. The maximum concentration measured in fish muscle from Snap Lake in 2014 was 0.0257 mg/kg wet muscle from Snap Lake in 2014 was 0.0257 mg/kg wet p g gp g gweight, which is more than 25weight, which is more than 25--fold less than thefold less than the ProponentProponent--derivedderived value that could be harmful to humansvalue that could be harmful to humans..."..."

5.5 ENR Comments on Cesium 5.5 ENR Comments on Cesium and Thallium Response Planand Thallium Response Plan

ENR requests additional detail on theENR requests additional detail on the ENR requests additional detail on the ENR requests additional detail on the number and location of number and location of epilithicepilithic algae algae samples that will be used from the 2014samples that will be used from the 2014samples that will be used from the 2014 samples that will be used from the 2014 archivesarchives

ENR requests that De Beers provide theENR requests that De Beers provide the ENR requests that De Beers provide the ENR requests that De Beers provide the new detection limits for cesium and new detection limits for cesium and thalliumthalliumthalliumthallium

5.6 5.6 ENR Comments on theENR Comments on theEngagement Plan Engagement Plan

No comments or recommendations for theNo comments or recommendations for theNo comments or recommendations for the No comments or recommendations for the consideration of the Board at this timeconsideration of the Board at this time

6 Agency’s Activities6 Agency’s Activities6. Agency s Activities6. Agency s Activities

Due to the suspension of Snap Lake MineDue to the suspension of Snap Lake Mine Due to the suspension of Snap Lake Mine Due to the suspension of Snap Lake Mine operation, SLEMA’s budget for the next financial operation, SLEMA’s budget for the next financial year was cut down to $439,423, that is a 17% off year was cut down to $439,423, that is a 17% off yyfrom the original amountfrom the original amount

SLEMA Chair and staff had a meeting with De SLEMA Chair and staff had a meeting with De Beer staff on March 7, 2016, and discussed Beer staff on March 7, 2016, and discussed about the monitoring and reporting during care about the monitoring and reporting during care

d i td i tand maintenanceand maintenance SLEMA Executive Meeting was held on March SLEMA Executive Meeting was held on March

30 201630 201630, 201630, 2016

7 SLEMA Reviews7 SLEMA Reviews7. SLEMA Reviews7. SLEMA Reviews SLEMA Modeling UpdateSLEMA Modeling Update

•• Under Care and MaintenanceUnder Care and MaintenanceCommunity Engagement PlanCommunity Engagement Plany g gy g g 2014 Environmental Agreement Annual 2014 Environmental Agreement Annual

ReportReportReportReport

7 1 SLEMA Modeling Update7 1 SLEMA Modeling Update7.1 SLEMA Modeling Update7.1 SLEMA Modeling Update

SLEMA model was calibrated with data up toSLEMA model was calibrated with data up to SLEMA model was calibrated with data up to SLEMA model was calibrated with data up to February 2016February 2016 Correlation coCorrelation co--efficient: 0.998efficient: 0.998

Three scenarios were analyzed due to the Three scenarios were analyzed due to the operation suspension since December 5, 2015operation suspension since December 5, 2015 Dewatering during Care and Maintenance period (up Dewatering during Care and Maintenance period (up

to 2028)to 2028)Fl di th d d ki d i E t d dFl di th d d ki d i E t d d Flooding the underground workings during Extended Flooding the underground workings during Extended Care and Maintenance period (up to 2028)Care and Maintenance period (up to 2028)

Flooding the underground workings during ExtendedFlooding the underground workings during ExtendedFlooding the underground workings during Extended Flooding the underground workings during Extended Care and Maintenance period (up to 2019)Care and Maintenance period (up to 2019)

Water Quality Prediction of Snap Lake -C d M i t D t i S i

1000

1200

L

Care and Maintenance: Dewatering Scenario

800

1000

atio

n, m

g/L

Observed ValueSLEMA ModelWTP Effluent

Water Quality Objective, 1000 mg/L

400

600

Con

cent

ra

Water Quality Objective, 350 mg/L

200

400

TDS

Assumed discharge amount and concentration since January 2016: 1 4 M m3/month 650 mg/L

Correlation co-efficient: 0.998

0

Jun-

04Ju

n-05

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06Ju

n-07

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since January 2016: 1.4 M m3/month, 650 mg/L

J J J J J J J J J J J J J J J J J J J J J J J J J

Month

Water Quality Prediction of Snap Lake -C d M i t Fl di S i

1000

1200

L

Care and Maintenance: Flooding Scenario

800

1000

atio

n, m

g/L

Observed ValueSLEMA ModelWTP Effluent

Water Quality Objective, 1000 mg/L

400

600

Con

cent

ra

Water Quality Objective, 350 mg/L

200

400

TDS

Assumed discharge amount and concentration since December 2016: 0 m3/month 0 mg/L

Correlation co-efficient: 0.998

0

Jun-

04Ju

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since December 2016: 0 m3/month, 0 mg/L

J J J J J J J J J J J J J J J J J J J J J J J J J

Month

Water Quality Prediction of Snap Lake -

1000

1200

Ly p

Care and Maintenance: Flooding Scenario 2

800

1000

atio

n, m

g/L

Observed ValueSLEMA ModelWTP Effluent

Water Quality Objective, 1000 mg/L

400

600

Con

cent

ra

Water Quality Objective, 350 mg/L

200

400

TDS

Assumed zero discharge for 3 years (December 2016 - November 2019), then 1.4

Correlation co-efficient: 0.998

0

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04Ju

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M m3/month and 650 mg/L

J J J J J J J J J J J J J J J J J J J J J J J J J

Month

Comments from the Comments from the Environmental Analyst (I)Environmental Analyst (I)

If dewatering continues TDS levels inIf dewatering continues TDS levels in If dewatering continues, TDS levels in If dewatering continues, TDS levels in Snap Lake will go up but will be lower than Snap Lake will go up but will be lower than the TDS levels of treated effluent (assumethe TDS levels of treated effluent (assumethe TDS levels of treated effluent (assume the TDS levels of treated effluent (assume 650 mg/L), all the time650 mg/L), all the time

Under flooding scenario TDS levels inUnder flooding scenario TDS levels inUnder flooding scenario, TDS levels in Under flooding scenario, TDS levels in Snap Lake will be lower than 350 mg/L Snap Lake will be lower than 350 mg/L (previous Water(previous Water LicenceLicence) in 2028) in 2028(previous Water (previous Water LicenceLicence) in 2028) in 2028

Comments from the Comments from the Environmental Analyst (II)Environmental Analyst (II)

Under both Care and MaintenanceUnder both Care and MaintenanceUnder both Care and Maintenance Under both Care and Maintenance scenarios, the TDS levels in Snap Lake scenarios, the TDS levels in Snap Lake will be lower than the Water Qualitywill be lower than the Water Qualitywill be lower than the Water Quality will be lower than the Water Quality Objective. The impacts on water quality Objective. The impacts on water quality are expected to be lower than that duringare expected to be lower than that duringare expected to be lower than that during are expected to be lower than that during normal production normal production

7 2 Community Engagement Plan7 2 Community Engagement Plan7.2 Community Engagement Plan7.2 Community Engagement Plan

This plan describes the methods by whichThis plan describes the methods by which This plan describes the methods by which This plan describes the methods by which De Beers will undertake Engagement on De Beers will undertake Engagement on key topics related to the waterkey topics related to the water licencelicence andandkey topics related to the water key topics related to the water licencelicence and and land use permit(s) inclusive of this Care land use permit(s) inclusive of this Care and Maintenance periodand Maintenance periodand Maintenance periodand Maintenance period

Guiding PrinciplesGuiding PrinciplesGuiding PrinciplesGuiding Principles

RespectfulRespectfulRespectfulRespectful TimelyTimely InformativeInformativeComprehensiveComprehensiveOngoingOngoingResponsiveResponsiveResponsiveResponsive

7 2 Plan Objective7 2 Plan Objective7.2 Plan Objective7.2 Plan Objective

De Beers’ engagement efforts and actionsDe Beers’ engagement efforts and actionsDe Beers engagement efforts and actions, De Beers engagement efforts and actions, along with Board consultative processes, along with Board consultative processes, together contribute to meaningfultogether contribute to meaningfultogether contribute to meaningful together contribute to meaningful involvement of parties by: involvement of parties by:

enabling the understanding of a proposedenabling the understanding of a proposed enabling the understanding of a proposed enabling the understanding of a proposed development; development;

providing a forum for feedback on issues ofproviding a forum for feedback on issues of providing a forum for feedback on issues of providing a forum for feedback on issues of concern with a proposed development; and, concern with a proposed development; and,

strengthening relationships between De Beersstrengthening relationships between De Beers strengthening relationships between De Beers strengthening relationships between De Beers and Aboriginal organizations and Aboriginal organizations

Process of EngagementProcess of Engagement

Engagement ProcessEngagement ProcessEngagement ProcessEngagement Process

RequestRequestRequestRequest Scheduling and logisticsScheduling and logisticsCirculation of materialsCirculation of materials Engagement activityEngagement activity

Quarterly meetingsQuarterly meetings Annual visits to communitiesAnnual visits to communities Site visitsSite visits Workshops and meetingsWorkshops and meetingsWorkshops and meetingsWorkshops and meetings

FollowFollow--up materialsup materials

Comments from the Comments from the Environmental AnalystEnvironmental Analyst

No concerns are raisedNo concerns are raisedNo concerns are raisedNo concerns are raised

7.3 2014 Environmental 7.3 2014 Environmental Agreement Annual ReportAgreement Annual Report

The official report with aboriginal languageThe official report with aboriginal language The official report with aboriginal language The official report with aboriginal language summary was submitted on March 4, 2016 summary was submitted on March 4, 2016

The draft EAAR 2014 was submitted onThe draft EAAR 2014 was submitted on The draft EAAR 2014 was submitted on The draft EAAR 2014 was submitted on January 11, and was reviewed by SLEMA and January 11, and was reviewed by SLEMA and ENRENRENRENR

SLEMA provided comments via eSLEMA provided comments via e--mail on mail on February 16February 16yy

De Beers made related revisionsDe Beers made related revisions

Responses to SLEMA Comments (I)Responses to SLEMA Comments (I)Responses to SLEMA Comments (I) Responses to SLEMA Comments (I)

In response to SLEMA comments DeIn response to SLEMA comments De In response to SLEMA comments, De In response to SLEMA comments, De Beers added three subBeers added three sub--sections into sections into Section 5 Summary of ComplianceSection 5 Summary of ComplianceSection 5 Summary of Compliance Section 5 Summary of Compliance SubSub--section 5.1 AEMP Action Level section 5.1 AEMP Action Level

Responses Triggered in 2014Responses Triggered in 2014Responses Triggered in 2014Responses Triggered in 2014 SubSub--section 5.2 SNP section 5.2 SNP ExceedanceExceedance of Average of Average

Monthly LimitMonthly Limit –– ChlorideChlorideMonthly Limit Monthly Limit ChlorideChloride SubSub--section 5.3 Waste section 5.3 Waste LicenceLicence ExceedancesExceedances

at SNP 02at SNP 02--16i16iat S 0at S 0 66

Responses to SLEMA Comments (II)Responses to SLEMA Comments (II)Responses to SLEMA Comments (II) Responses to SLEMA Comments (II)

In response to SLEMA comments, De Beers addedIn response to SLEMA comments, De Beers added In response to SLEMA comments, De Beers added In response to SLEMA comments, De Beers added responses to public concerns in Section 8 Summary of responses to public concerns in Section 8 Summary of Public ConcernsPublic ConcernsD B dd d th fi f 2014D B dd d th fi f 2014 Wi d dWi d d dd De Beers added the figures of 2014 De Beers added the figures of 2014 WindspeedWindspeed and and Rainfall, 2014 Annual Average Total Suspended Rainfall, 2014 Annual Average Total Suspended Particulate, Particulate, SulphurSulphur Dioxide and Nitrogen Dioxide, Dioxide and Nitrogen Dioxide, pp ggLocation of Location of DustfallDustfall and Meteorological Stations, and and Meteorological Stations, and Wolverine Hair Snagging Stations into Section 4 2014 Wolverine Hair Snagging Stations into Section 4 2014 Report SubmissionsReport SubmissionsReport Submissions Report Submissions

De Beers replaced five pages of site photos without De Beers replaced five pages of site photos without explanation with four photos showing the North Pile from explanation with four photos showing the North Pile from 2011 to 2014, in Appendix A: Photographs2011 to 2014, in Appendix A: Photographs

Comments from the Comments from the Environmental AnalystEnvironmental Analyst

The revisions improve the reportThe revisions improve the report The revisions improve the report The revisions improve the report presentation, and they are satisfactorypresentation, and they are satisfactory

No concerns are raisedNo concerns are raisedNo concerns are raised No concerns are raised