Integrated Management Strategy for Risk Reduction of ... · Boundary conditions Economical aspects...
Transcript of Integrated Management Strategy for Risk Reduction of ... · Boundary conditions Economical aspects...
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Integrated Management Strategy for Risk Reduction of Groundwater Contamination at Tarnowskie Góry Megasite
Janusz KrupanekInstitute for Ecology of Industrial Areas
Katowice, Poland
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WELCOME ProjectDevelopment of Integrated Management System (IMS) for Prevention and Reduction of Pollution of Waterbodies at
Contaminated Industrial Megasites. Programme: EESD/RTD 5FP
Coordinator: Huub Rijnaards, TNO, Apeldoorn, The Netherlands
Jerzy Szdzuj, Daniel Słowikowski, Ryszard Janikowski,Marek Korcz
(Institute for Ecology of Industrial Areas, Katowice, Poland)Grzegorz Malina
(Czestochowa University of Technology, Czestochowa, Poland)
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Section
Expert support
toolsCheck point
Megasite and RMZ
Risk assessment
Management scenarios
ImplementationMonitoring& Review
1 2 3 4
Contamination data & maps
GIS-data, emission, data & maps, cluster maps, RAS
PRESTO, CARO
1.2 Form a group of stakeholders
1.3 Make overview of boundary conditions
1.1 Problem definition
1.4 Make inventory of megasite information
1.5 Build conceptual model1.6 Decide whether an Integrated Management is needed
2.1 Make megasite description
2.2 Define potential risk clusters
2.3 Carry out fate and transport modeling
2.4 Derive local standards and determine risks
2.5 Finalize risk cluster
3.1 Define feasible management scenarios for each cluster
3.2 Perform cost-efficiency and risk reduction analyses
3.3 Select highest priority management scenarios of the RMZ
4.1 Build implementation plan of selected management sceanrios
4.2 develop and implement monitoring program
4.3 Construct medium-long term IMS review plan
Integrated Management System
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Megasite and Risk Management Zone
Tarnowskie Góry Megasite
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The past industrial activity -beside the unquestionable positives - leaves us with unwanted heritage of environmental (e.g. polluted soil and groundwater), economic and social problems
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Geography of the Tarnowskie Góry
Megasite
SilesianVoivodeship
TarnowskieGóry County
#S
Tarnowskie GóryCounty
"Tarnowskie Góry"Chemical Plant
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Tarnowskie Góry megasite - overview
Various pollution sourcesand environmentalcontamination
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HISTORYXV-XIX c. – silver, lead and zinc
ores extraction
-20 000 shafts-250 km adits and corridors
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HISTORYXIX c. - Steel and paper production
View of the site from SE, 1892
Waste depositsChanged land structure
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HISTORY1922 – 1995 Chemical Plant „Tarnowskie Góry”–
view from SE, 1975
Production of : sodium dichromate, barium chloride, boric acid, borax, barium nitrate, zinc oxygen, zinc sulphate, sodium perborate, aluminium sulphate, copper sulphate, zinc sulphate and potassium aluminium sulphate, barium salts and lithopone, strontium carbonate, active soot
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Chemical Plant– main pollution source
1.5 x 106 m3 (2.7x106 Mg) waste materials deposited on uncontrolled dumps (26 ha) – total area 34 ha
The annual leachate load from landfills:
B – 6.63 Mg
Ba – 80.4 Mg
Sr – 5.8 Mg
Zn – 1.4 Mg
SO4 – 274.5 Mg
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Triassic aquifers - sourcesof water for 0.3 mlnpeople
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Group of stakeholders
Acceptance of integrated managament approach with thefocus on groundwater resources as the priority of environmental policy at a local, regional and national scale
Tarnowskie Gory Megasite round table
stakeholdres meeting
Input informationMegasite manager
Owners/users of wells(Triassic aquifer)
Local government(Town Tarnowskie Gory,County Tarnowskie Gory)
National governmentRegulator(Environmental&sanitary inspections)
National governmentOwner of the site(Liquidator of Chemical Plant"Tarnowskie Gory")
National governmentFinancial resources(National budget, National®ionalenvironmental and water economy funds)
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Boundary conditionsEconomical aspects
lack of available funding, slow development, local government budget constrains, infrastructure, administration attitude; lack of revitalization drivers (low prices for land, low investment attractiveness, relative abundant water resources, low level of local consumption)
Social issueshigh cost of water, unemployment, rising cost of media for average consumer and the low income families
Environmental issueslegal conditions, groundwater hydrological conditions
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Conceptual model
E1
E1
E2
Q
TI
Sa
E6
E1 - health and ecological impacts
Q - Quaternary aquiferT - Trriasic aquifer
E2- surface waters impact E5 - migration-Quaternary Sx - contamination sources
E3
E6
RMZ RMZ
RMZ - Risk Management Zone
Sb
E0
E0
E4
E5
E5
E6, - water wells impacts
E0 - deposition in soil, Quaternary E3 - vertical migration - Trriasic
E4
E2E2
E4, - migration Quaternary -Trriasic
ScE0
TII
E7
Receptors
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Risk modeling
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Management Zones in Tarnowskie Góry megasite
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Group of stakeholdersAcceptance of risk based
managament approach within the risk management zone and determined boundary conditions
Tarnowskie Gory Megasite round table
stakeholdres meeting
Health risk (surface contamination)
Health risk (groundwater contamination)
Ecological risk (soil, sediments, plant contamination)
Risk related to water erosion
Risk related to contaminated sediments
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Risk assessment
Tarnowskie Góry Megasite
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Risk clusters
Q
TI
Sa
Q - Quaternary aquifer
T -Triassic aquifer (first & second layer)
Sb
Sc
TII
Sa - waste deposits of the Chemical Plant Tarnowskie GórySb - contaminated quaternary shallow layer
Sc - contaminanted soil in the vicinity of the chemical plant
Qi
Qi -Quaternary -isolation layer
CLUSTER I
CLUSTER III
CLUSTER II
Risk Management Zone
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Risk evaluationCluster I
Health risk (surface) Medium
Ecological risk (soil, sediments, plants) Low
Risk related to water erosion Medium
Risk related to sediments Low
Cluster II
Cluster III
Health risk (groundwater wells) High
Health risk (groundwater wells) Medium
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Priority contaminants
Based on: the interpretation of modelling results and riskassessment and conclusions of the expert meeting,
boron was selected as the priority contaminant at the
Tarnowskie Góry Megasite
Contaminant Frequency of occurrence
Natural attenuation potential
Toxicity Mobility potential
Data availability
Arsenic Moderate High High Low Moderate Barium High High Moderate Low Moderate Boron High Low Moderate High Moderate Cadmium Moderate Moderate High Low Moderate Strontium High Low Low High Moderate Zinc High Moderate Moderate Low Moderate
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Groundwater contamination with BORON, 2002
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Risks and stakeholders interests
Receptors(water wells)
Receptors(water wells)
Medium risk
Low risk
High risk
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Group of stakeholders
Acceptance of risk assumptions and determined local standards at planes of compliance
Tarnowskie Gory Megasite round table
stakeholdres meeting
Boron migration in Triassic aquifer threatening water extraction in the area is a priority
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Management scenarios
Tarnowskie Góry Megasite
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Management goals for Tarnowskie Góry priorities
stabilisation of the contaminants plume – worst case at least no further spread outside the area of risk management zone
stabilisation of the contaminants plume at the actual state (year 2003) trend reversal
clean up of the Triassic aquifer time- frame 2030
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Support different situations
by specific tools
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Basic scenariosSource-oriented measures:
primary sources capping or removalcontaminants immobilization in soils and Quaternary deposits (secondary source)
Pathway oriented: internal hydrological barrier external hydrological barrier
Receptor oriented: monitoring,water extraction regime at receptors (wells) development as a hydraulic barrier
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Feasibility studyModelling
Modflow 96 PMPathMT3D
Technical aspects of implementation
Land use requirements
Legal and policy issues
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Chemical Plant liquidation plan, 2003
The chemical plant demolition is completed
New Central landfillBuilding within the site•Area – 16 ha•Cubature – 1.7 x 106 m3
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Group of stakeholdersRefining of management goals and
acceptance of management options, establishement of local standards and planes of compliance
Tarnowskie Gory Megasite round table
stakeholdres meeting
• The boron concentration of 0.3 mg/l is accepted as final steering parameter at planes of compliance established for Triassic groundwater wells
• Concentration 1 mg of boron /l is reqiured in I level of Triassic aquifer at risk management zones
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Preferred scenariosS 1 – controlled natural attenuation (NA), i.e. source removal + monitoring and control of the hydrological regime
S 2 – active groundwater remediation (AGWR), i.e. source removal + groundwater clean-up + monitoring
S 3 – engineered natural attenuation (NA), i.e. source removal + increased extraction of groundwater (specific and low-risk oriented) within the Risk Management Zone (RMZ) + monitoring
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Scenario S1
Landfill construction is the main activityGroudnwater ,onitoring is essentially improved Relative high risk for selected stakeholders remains – boron plume spread in the Triassic aquifer
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Scenario S2Two technical variants of groundwater clean up
Internal barrier External barrier
• Decontamination issue and water utylization issue(700-1200 m3 of contaminated water/day) - high cost
• New infrastructure is required (new and existing wells)
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Scenario S3
Relevant for intensive development of the water extraction system in the area with increased groundwater yield >20 000 m3/d (current yield in the area) infrastructure implications (new water wells with high capacity, pipelines should be built)Development of new monitoring regime is essentialProvide safety conditions for existing and potential groundwater well users
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S1 50 mln € S2 >70 mln €
S3 <49 mln €
Cost – efficiency Triassic aquifer contamination – forecast for 2030
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Cost – efficiency Triassic aquifer contamination – forecast for 2075
S1 50 mln € S2 >80 mln €
S3 <48 mln €
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Cost – efficiency Triassic aquifer contamination – forecast for 2100
S1 50 mln € S2 >80 mln €
S3 <47 mln €
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Cost-benefit analysis
Issue S1 S2 S3Water needs (social, industrial) - + ++Organizational aspects + - -Environmental issues - + -Infrastructure implications + - -Local finance + - -Local development - + +Policy and legal aspects + + +
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GOS decision on Final IMSthe group of stakeholders have
not made the decision on the selection of the final risk management scenario (RMS)
Tarnowskie Gory Megasite round table
stakeholdres meeting
Scenario S1 is currently being implemented. The Scenario S1 and S3 are preferred because of their cost-efficiency and benefits. Implementation of the scenario S2 is not excluded.The final decision will depend on the following:
Access to funds;Elimination of knowledge and technological gaps,Stabilization of environmental regulations
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Implementation, Monitoring, Review
Tarnowskie Góry Megasite
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Management plan
establishment of risk management zone (RMZ) in the watershed management plan by the Regional Water Management Board Implementation of the monitoring programme with continuous revision and modificationFurther research on boron plume dispersal and cost-efficient clean up solutionspermanent assessment, verification and management of the risks within the RMZ Review process - revisions done by the stakeholders
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Organizational schemeScenario S1 – controlled NA
existing organizational structure based on the legal obligations of the local and regional administration and the megasite management organization (the liquidator of chemical plant)
Scenario S2 – active groundwater remediationestablishment of a new organization unit within the local and regional administration for implementing this scenario after the chemical plant liquidation program is completed
Scenario S3 – engineered NAEngagement of different stakeholders (administration, industry) New management structure to intensify the processes of the megasiteredevelopment Local and regional administration may have a leading position inimplementation of this scheme
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Monitoring Program
A new organization of a monitoring system for the megasite, is proposed
SELECTED PRIORITY SITES
DEFINITION OF OBJECTIVES
COLLECTION OF EXISTING DATA
ESTABLISHMENT OF CONCEPTUALGEOLOGICAL/ HYDROGEOLOGICAL
MODEL AND FLOWNET CONSTRUCTION
NETWORK IMPLEMENTATION
PERIODIC SAMPLING
CHEMICALANALYSES
WATER-LEVELPERIODIC
MEASUREMENT
EVALUATION OFGROUNDWATER FLOW PATTERN
DATABASE MANAGEMENT SYSTEM
IMPLEMENTATION OF PROTECTIVE MEASURES
EXISTING DATA ANALYSIS
DEVELOP WORK PLAN
SAMPLING NETWORKPRELIMINARY DESIGN
SELECTION OF TARGET
MONITORING
LOCATION OF BACKGROUND AND
DOWNGRADIENT WELLS
VERIFIFICATION OF LOCATIONS
SELECTION OF DETERMINANTS
SELECTION OF SAMPLING METHODS
MONITORING WELLS INSTALLATION
TEST SYSTEM
NATURALATTENUATION
REMEDIATION
DATA ANALYSIS
GROUNDWATER QUALITY INFORMATION SYSTEM
GROUNDWATER QUALITY MANAGEMENT SYSTEM
OPTIMISATION OF MONITORING PROGRAM
FIELD INVESTIGATION
CONFIRM/REFINE CONCEPTUAL MODEL AND
FLOWNET
follow-up
Verified sampling protocol, i.e. sampling technique, frequency and parameters to be measured (number and range)
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Monitoring ProgramGroundwater quality monitoring of the Triassic aquifers is focused on
tracing migration of potential contaminants from the area of dumping sites and quaternary sediments to the operating groundwater intakes
performance of the controlled landfill and the secondary sources of contamination (i.e. quaternary sediments).
Reduction of the monitoring of the Quaternary water-bearing horizons within the area of former dumping sites is proposed
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Conclusions
Integrated Management Strategy for Tarnowskie Góry megasite is a good example of dynamic, interactive, systemic and risk-based management of complex systemThe management of the megasite is an ongoing process of learning with key stakeholders participation
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THANK YOU FOR ATTENTION