Hillside Marine Baseline Overview AUSTRALIA’S NEXT GREAT COPPER PROJECT HILLSIDE: SOUTH AUSTRALIA
Hillside Marine Baseline Overview Rex Minerals Hillside – Baseline Survey of Marine and Coastal Ecosystems Hillside Project 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 27/03/2017 (not in the current mine plan).
Hillside Marine Baseline Overview Gully Surveys - Site to Rogues Point Hillside Project HILLSIDE PROJECT, COMMERCIAL IN CONFIDENCE
Hillside Marine Baseline Overview Gully Surveys - Site to Rogues Point Hillside Project
Hillside Marine Baseline Overview Intertidal Surveys – Pine Point to Ardrossan Hillside Project Port Ardrossan Sites 1-7 Hillside Coastline Sites 8- 23
Hillside Marine Baseline Overview Sub-tidal Habitat Mapping - Point Data Hillside Project Posidonia Halophila
Hillside Marine Baseline Overview Seagrass Condition Study Sites Hillside Project HILLSIDE PROJECT, COMMERCIAL IN CONFIDENCE
Hillside Marine Baseline Overview Summary of Seagrass Species & Percentage Cover Hillside Project
Hillside Marine Baseline Overview Base Line Study - Seagrass (P. sinuosa) leaf length, density and biomass. Hillside Project
Hillside Marine Baseline Overview Fauna Observed Within Seagrass Communities Hillside Project
Hillside Marine Baseline Overview Marine Sediment Characterisation Hillside Project
Hillside Marine Baseline Overview Base Sediment Characterisation Hillside Project
Hillside Marine Baseline Overview Base Sediment Characterisation Hillside Project hydrocarbon s
Hillside Marine Baseline Overview Base Line Study – Potential Impacts from Mining Hillside Project 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 Marine Baseline Overview Additional Baseline Studies – Pre-existing Hillside Project 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 Marine Baseline Overview Baseline Heavy Metal Conditions in Sediments, Seagrass and Hillside Project Razorfish
Hillside Marine Baseline Overview Baseline Study of Pre-existing Conditions Hillside Project 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.
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 27/03/2017 HILLSIDE PROJECT, COMMERCIAL IN CONFIDENCE
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