Territory Stories

The rum jungle rehabilitation project monitoring report 1993-1998



The rum jungle rehabilitation project monitoring report 1993-1998


Pidsley, Sandra


E-Publications; E-Books; PublicationNT; Report ; 1/2002




Made available via the Publications (Legal Deposit) Act 2004 (NT).





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Dept. of Infrastructure, Planning and the Environment

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Report ; 1/2002

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i TABLE OF CONTENTS 1. SUMMARY ________________________________________________________________ 1 1.1. INTRODUCTION 1 1.2. MANAGEMENT AND MONITORING 1 1.3. SURFACE WATER MONITORING 2 1.4. WATER QUALITY IN WHITES AND INTERMEDIATE OPEN CUT WATER BODIES 4 1.5. VEGETATION DIEBACK ON DYSONS OPEN CUT, IMPLICATIONS, CAUSAL MECHANISMS AND OPTIONS FOR REMEDIATION 5 1.6. EFFECTIVENESS OF COVERS ON THE OVERBURDEN HEAPS 6 1.7. MEASURES OF ECOLOGICAL IMPACT IN THE FINNISS RIVER DOWNSTREAM OF THE RUM JUNGLE REHABILITATED SITE, 1993-98 6 1.8. SITE INTEGRITY 7 2. MANAGEMENT AND MONITORING: A DISCUSSION OF ISSUES AFFECTING FUTURE LAND USE, MANAGEMENT AND MONITORING _______________________ 9 2.1. INTRODUCTION 9 2.2. ENVIRONMENTAL IMPACTS 10 2.3. REHABILITATION AND MONITORING 1982-1998 12 Rehabilitation objectives 12 Rehabilitation standards 14 Monitoring arrangements 15 1986-1988 monitoring recommendations 16 1988-1993 monitoring recommendations 17 1993-1998 monitoring 18 2.4. CONTEXTUAL ISSUES FOR FUTURE MANAGEMENT AND MONITORING 21 Contemporary standards 21 Final land use 22 Land use options 25 2.5. CONCLUSION AND SUGGESTIONS FOR FURTHER WORK 26 3. SURFACE WATER MONITORING ____________________________________________ 29 3.1. INTRODUCTION 29 Gauge station network data collection 30 3.2. METHODS 32 Hydrological data 32 Chemical analysis 34 3.3. RESULTS AND DISCUSSION 34 Hydrology of early and late flows at gauge stations GS 8150200 and GS 8150097 34 Comparison of hydrological data at GS 8150200 and GS 8150212 36 Open cut gauge stations GS 8150213 and GS 8150212 38 Annual Contaminant Loads 40 pH a measure of the acid in acid mine drainage 43 Frequency distribution of metal concentrations recorded at GS 8150097 46 Contaminant loads delivery schedules to the receiving environment 53 Finniss River downstream of the confluence with its East Branch (GS 8150204) 55 Dysons open cut landform run-off monitoring 58 East Finniss River reach surveys 60 3.4 WATER SAMPLING ERROR ESTIMATIONS ON COMPOSITE SAMPLES 68 Methodology 69 Results and discussion 69 3.5 SUGGESTIONS FOR FURTHER WORK BASED ON THE 1993/1998 SURFACE WATER MONITORING PROGRAM. 71

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