acid mine drainage tcta mandate

14
1 Date: 21/22 June 2011 Presentation to Parliamentary Portfolio Committee on Water Affairs

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ACID MINE DRAINAGE TCTA MANDATE. Presentation to Parliamentary Portfolio Committee on Water Affairs. Date: 21/22 June 2011. Content. TCTA Mandate PSP Role Consultations with mines Western Basin Central Basin Eastern Basin Programme Key Challenges. TCTA Mandate. - PowerPoint PPT Presentation

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Page 1: ACID MINE DRAINAGE TCTA MANDATE

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Date: 21/22 June 2011

Presentation to Parliamentary Portfolio Committeeon Water Affairs

Page 2: ACID MINE DRAINAGE TCTA MANDATE

TCTA Mandate

PSP Role

Consultations with mines

Western Basin

Central Basin

Eastern Basin

Programme

Key Challenges

Page 3: ACID MINE DRAINAGE TCTA MANDATE

Ministerial directive – 6 April 2011Emergency works in Witwatersrand Gold

Fields comprising:Installation of pumpsConstruction of water treatment plantsRelease treated water into river system

Obtain environmental and regulatory approvals

Funding via National Treasury (R225 million)Advise and assist DWA with O&M modelRight to expropriate landMinister may direct to do more

Page 4: ACID MINE DRAINAGE TCTA MANDATE

Issue tender on 8 April 2011PSP : BKS in association with GolderAward PSP contract (Part 1)on 9 May 2011Main tasks:

Due diligence review – report due 7 JulyTender design and documentationDetail design and construction supervisionProject closeout

Page 5: ACID MINE DRAINAGE TCTA MANDATE

Western and Central basins Eastern Basin?Explore institutional options (legal frameworks)Access to landAvailability and status of existing infrastructureCo-funding options

CapexOpex

Water off-takesO&M options

Page 6: ACID MINE DRAINAGE TCTA MANDATE

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Page 7: ACID MINE DRAINAGE TCTA MANDATE

Agreed ECL level is 1550 amsl or 160 m below collar of 8 Shaft.

Current decant 17.7 ML/day into the Tweelopies Spruit.

Peak flows of 50 – 60 Ml/day have been measured in summer

Immediate solutions identified to reduce decant in Western BasinUpgrade of Rand Uranium plant to treat 30 Ml/day

(preferred)Upgrade Mogale Gold treatment plant 24 Ml/dayUpgrade Rand uranium and Mogale Gold

Cost of immediate solution (Capex R25 M) (Opex R52 M per year)

Short term solution - being identified

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Page 8: ACID MINE DRAINAGE TCTA MANDATE

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Page 9: ACID MINE DRAINAGE TCTA MANDATE

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Page 10: ACID MINE DRAINAGE TCTA MANDATE

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Agreed ECL level is 1467 amsl or 173 m below collar of SWV Shaft.

Gold Reef City requires level below 1480 amsl

CRG requires level to be 400m below SWV

Short term solution - being identified

Pumps have been ordered by CRG to pump to 400 m

Page 11: ACID MINE DRAINAGE TCTA MANDATE

Current Design ECL set at 1280 amsl or 290 m below Grootvlei collar

Role players to be identified

Final ECL to be determined based on mining requirements

Short term solution - being identified

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Page 12: ACID MINE DRAINAGE TCTA MANDATE

ACTIVITY DATE

Receive directive 6 April 2011

Appoint PSP 9 May 2011

Complete due diligence 7 July 2011

Issue tenders 11 October 2011

Commission immediate solution (Western B) November 2011

Start construction January 2012

Project commissioning September 2012

Project closeout December 2012

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Page 13: ACID MINE DRAINAGE TCTA MANDATE

Emergency status of project – accelerated processes

Unclear project scope definitionSeverely limited timeframesTimely regulatory and env approvalsPoor state of existing infrastructureHigh public profile and interestComplex institutional arrangementsLimited cost recoveryPossible budget limitationsTiming of long-term solution

Page 14: ACID MINE DRAINAGE TCTA MANDATE