WATER LICENCE RENEWAL EKATI MINE WL2012L2-0001 INDEPENDENT - - PowerPoint PPT Presentation

WATER LICENCE RENEWAL EKATI MINE

WL2012L2-0001

INDEPENDENT ENVIRONMENTAL MONITORING AGENCY FEBRUARY 12 & 13, 2013

February 12 & 13, 2013 IEMA 2

OUTLINE

• CHANGES PROPOSED BY BHPB
• EFFLUENT QUALITY CRITERIA (EQCs)

– LONG LAKE CONTAINMENT FACILITY – DISCHARGE TO CUJO LAKE – POST-CLOSURE

• RESPONSE FRAMEWORK AND PLANS

February 12 & 13, 2013 IEMA 3

CHANGES PROPOSED BY BHPB

• SCOPE AND DEFINITIONS

– EXPIRY DATE – DEFINITIONS

• SECURITY DEPOSITS
• WASTE DISPOSAL

– WASTE ROCK STORAGE AREAS REPORT – FREEBOARD REQUIREMENTS – EQCs

February 12 & 13, 2013 IEMA 4

CHANGES PROPOSED BY BHPB (2)

• MODIFICATIONS
• CONTINGENCY

PLANNING

– INTEGRATED APPROACH FOR RESPONSE FRAMEWORK AND AQUATIC EFFECTS MONTORING PROGRAM

February 12 & 13, 2013 IEMA 5

CHANGES PROPOSED BY BHPB (3)

• AQUATIC EFFECTS

– RETAIN CURRENT REQUIREMENTS FOR AQUATIC EFFECTS MONITORING PROGRAM IN THE LICENCE

• SURVEILLANCE NETWORK PROGRAM

– ACCEPT SUGGESTED CHANGES TO SNP – USE EQCs FOR KING POND(1616-43) FOR DESPERATION POND (1616-47)

February 12 & 13, 2013 IEMA 6

EFFLUENT QUALITY CRITERIA

• DISCHARGES FROM LLCF (1616-30)
• DISCHARGES TO CUJO LAKE (1616-43)
• POST-CLOSURE CRITERIA

February 12 & 13, 2013 IEMA 7

DISCHARGES FROM LLCF

• DELETE AMMONIA-N, ARSENIC, COPPER,

NICKEL, BOD

• ADD POTASSIUM
• ADD NITRATE-N

– INTERIM OF 10.0 MG/L FOR TWO YEARS – CONTINUE STUDIES ON POTENTIAL IMPACT OF CHANGES ON FISH POPULATIONS – REQUIRE A NITROGEN RESPONSE PLAN

• ADD CHLORIDE

– REQUIRE A CHLORIDE RESPONSE PLAN

• ADD SELENIUM

February 12 & 13, 2013 IEMA 8

DISCHARGES TO CUJO LAKE

• SUPPORTS PROPOSALS FOR pH, TSS, TPH
• DISAGREES WITH USE OF CUJO LAKE AS

DILUTION ZONE

• ADD NITRATE-N

– INTERIM VALUE OF 12.0 MG/L FOR TWO YEARS – CONTINUE STUDIES AND NITROGEN RESPONSE PLAN

OTHER EFFLUENT QUALITY CRITERIA CONCERNS

POST-CLOSURE CRITERIA

• NEED FOR A PROCESS TO DEFINE EQCs AT

CLOSURE IN RENEWAL LICENCE

IEMA February 12 & 13, 2013 9

February 12 & 13, 2013 IEMA 10

RESPONSE FRAMEWORK & MANAGEMENT PLANS

• RESPONSE FRAMEWORK

– GENERAL AGREEMENT WITH APPROACH – RECOMMEND THREE ACTION LEVELS & LONGER LEAD TIMES

• RESPONSE PLANS

– IMMEDIATELY FOR NITROGEN & CHLORIDE

February 12 & 13, 2013 IEMA 11

SUMMARY

• SUPPORT A NUMBER OF CHANGES AND

APPROACHES SUGGESTED BY BHPB

• SOME AREAS OF DISAGREEMENT

REMAIN

• NEED FOR TIMELY

DEVELOPMENT OF GLOBAL SECURITY DEPOSIT

February 12 & 13, 2013 IEMA 12

MAJOR RECOMMENDATIONS

• DEFINE ENGINEERED STRUCTURES
• SET INTERIM EQC FOR NITRATE-N

– THREE WATERSHED STATIONS (KOALA, CUJO AND DESPERATION) – LOWER THAN PROPOSED SSWQO

• PREPARE NITROGEN RESPONSE PLAN

– KOALA AND KING-CUJO WATERSHEDS

February 12 & 13, 2013 IEMA 13

MAJOR RECOMMENDATIONS (2)

• SET EQC FOR CHLORIDE AT 1616-30

PREFERABLY AT CCME GUIDELINE

• PREPARE CHLORIDE RESPONSE PLAN

FOR KOALA WATERSHED

• INTEGRATE RESPONSE FRAMEWORK

INTO AQUATIC EFFECTS MONITORING PROGRAM

February 12 & 13, 2013 IEMA 14

MAJOR RECOMMENDATIONS (3)

• RETAIN CURRENT REQUIREMENTS IN

PART J, ITEM 3 AND SCHEDULE 8 (AEMP)

• REQUIRE STUDIES PRIOR TO ANY USE

OF CUJO LAKE AS DILUTION ZONE

• SET EQCs FOR 1616-47 (DESPERATION)

AT SAME VALUES AS 1616-43 (CUJO)

THANK YOU

Independent Environmental Monitoring Agency Telephone: (867) 669-9141 Fax: (867) 669-9145 Email: monitor1@yk.com Website: www.monitoringagency.net

February 12 & 13, 2013 15 IEMA