SLIDE 1 AUSTRALIA’S NEXT GREAT COPPER PROJECT HILLSIDE: SOUTH AUSTRALIA
Hillside Marine Baseline Overview
SLIDE 2 Rex Minerals Hillside – Baseline Survey of Marine and Coastal Ecosystems
Baseline survey to identify species and habitats of conservation value and enable recommendations for management and future monitoring. The baseline surveys were divided into:
- coastal and intertidal habitats
- Gullies and associated vegetation,
- Intertidal marine animals, birds and flora
- subtidal habitats
- status of seagrass health
- subtidal sediment characteristics
To achieve the study objectives, the survey sites were selected to represent the coastline near to the Hillside Project site and the wharf facilities in Port Ardrossan (not in the current mine plan).
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Hillside Marine Baseline Overview
Hillside Project
SLIDE 3 Hillside Marine Baseline Overview
Gully Surveys - Site to Rogues Point
Hillside Project
HILLSIDE PROJECT, COMMERCIAL IN CONFIDENCE
SLIDE 4
Hillside Marine Baseline Overview
Gully Surveys - Site to Rogues Point
Hillside Project
SLIDE 5
Hillside Marine Baseline Overview
Intertidal Surveys – Pine Point to Ardrossan
Hillside Project
Port Ardrossan Sites 1-7 Hillside Coastline Sites 8- 23
SLIDE 6
Hillside Marine Baseline Overview
Sub-tidal Habitat Mapping - Point Data
Hillside Project
Halophila Posidonia
SLIDE 7 Hillside Marine Baseline Overview
Seagrass Condition Study Sites
Hillside Project
HILLSIDE PROJECT, COMMERCIAL IN CONFIDENCE
SLIDE 8
Hillside Marine Baseline Overview
Summary of Seagrass Species & Percentage Cover
Hillside Project
SLIDE 9
Hillside Marine Baseline Overview
Base Line Study - Seagrass (P. sinuosa) leaf length, density and biomass.
Hillside Project
SLIDE 10
Hillside Marine Baseline Overview
Fauna Observed Within Seagrass Communities
Hillside Project
SLIDE 11
Hillside Marine Baseline Overview
Marine Sediment Characterisation
Hillside Project
SLIDE 12
Hillside Marine Baseline Overview
Base Sediment Characterisation
Hillside Project
SLIDE 13
Hillside Marine Baseline Overview
Base Sediment Characterisation
Hillside Project
hydrocarbon s
SLIDE 14 Hillside Marine Baseline Overview
Base Line Study – Potential Impacts from Mining
The marine environment could be impacted by mining through airborne dust or surface water run-off containing sediment Inputs into marine environment impact assessment:
- Surface water design and management plan (being updated)
- Dust modelling and management plan (complete)
Both will be provided to COOE for reassessment of possible impacts based on the revised Hillside Project and proposed control measures This will lead to the development a marine monitoring plan using the baseline study as a benchmark
Hillside Project
SLIDE 15 Hillside Marine Baseline Overview
Additional Baseline Studies – Pre-existing Conditions
The aim of this second study was to determine background distribution and concentrations of metals in the marine environment, in the area influenced by the ship loading activities and at control sites.
- Determine baseline metal concentrations in sediment, seagrass and
razorfish;
- Compare heavy metal concentrations with Food Standards Australia
and New Zealand (FSANZ) and Australian and New Zealand Guidelines for Fresh and Marine Water Quality (ANZECC); and
- Prepare a monitoring program for Rex ongoing operations to
demonstrate to its stakeholders that its environmental management practices are working as intended. (This will be reviewed and amended to conform to the reduced mining activities).
Hillside Project
SLIDE 16
Hillside Marine Baseline Overview
Baseline Heavy Metal Conditions in Sediments, Seagrass and Razorfish Hillside Project
SLIDE 17 Hillside Marine Baseline Overview
Baseline Study of Pre-existing Conditions
Conclusions
- Sites around the wharf contained higher concentrations of metals.
Concentration of arsenic, chromium, iron, manganese and selenium were all elevated at site 4.
- Overall, sediments appeared to be uncontaminated (mean metal
concentrations below ISGQ-low).
- Metal concentrations in seagrass (H. ovalis) were highly variable
between sites. The highest concentrations of copper, lead, mercury, and zinc were all recorded from site 1.
- Razorfish distributions were patchy within the survey area. Of the
individuals analysed, concentration of arsenic, cadmium, mercury and zinc were highest at site 8 (a control site). It is concluded that the values obtained in this study provide a robust baseline from which future surveys can be compared to.
Hillside Project
SLIDE 18 Rex Minerals – Hillside Project – Marine Studies
A BASELINE STUDY OF POTENTIAL CONTAMINANTS IN SEDIMENT AND BIOTA FROM THE ARDROSSAN REGION, SEPTEMBER 2012 BASELINE SURVEY OF MARINE AND COASTAL ECOSYSTEMS, DECEMBER 2011
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HILLSIDE PROJECT, COMMERCIAL IN CONFIDENCE
