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Six Mile Creek Dam Safety Upgrade Project

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Six Mile Creek Dam Safety Upgrade Project Draft Impact Assessment Report Six Mile Creek Dam Safety Upgrade Project Prepared for Seqwater 25 January 2019 Abbreviations Abbreviations ABBREVIATION MEANING µg microgram (one millionth of a gram) AADT Average Annual Daily Traffic ABS Australian Bureau of Statistics (Commonwealth) ACH Act Aboriginal Cultural Heritage Act 2003 (Cth) ADWG Australian Drinking Water Guidelines AEP Annual Exceedance Probability AHD Australian Height Datum ALA Atlas of Living Australia ALARP As Low As Reasonably Practical AMTD Adopted Middle Thread Distance ANCOLD Australian National Committee on Large Dams ANZECC Australian and New Zealand Environment and Conservation Council AQIA Air Quality Impact Assessment ARMCANZ Agriculture and Resource Management Council of Australia and New Zealand AS Australian Standard ASC Australian Soil Classification ASS Acid Sulfate Soils AWQG Australian Water Quality Guidelines BOD Biological Oxygen Demand BoM Bureau of Meteorology (Commonwealth) BTEX benzene, toluene, ethyl benzene and xylene the Agreement between the Government of Australia and the Government of the CAMBA People’s Republic of China for the protection of Migratory Birds and their Environment signed in Canberra on 20 October 1986. CEMP Construction Environmental Management Plan OCG Office of the Coordinator-General CHMP Cultural Heritage Management Plan Ck Creek CRG Community Reference Group CLR Contaminated Land Register cm Centimetre Cth Commonwealth CHAPTER 1 – INTRODUCTION Seqwater Six Mile Creek Dam Safety Upgrade Project 25 January 2019 1-3 Abbreviations ABBREVIATION MEANING DAF Department of Agriculture and Fisheries’ dB Decibel DBH Diameter at Breast Height DCF Dam Crest Flood DCL Dam Crest Level DEM Digital Elevation Model DEO Desired Environmental Outcomes DES Department of Environment and Science DG Dangerous Goods DNRME Department of Natural Resources, Mines and Energy (Queensland) DO Dissolved Oxygen DoEE Department of Environment and Energy (Commonwealth) DS Downstream DSDMIP Department of State Development, Manufacturing, Infrastructure and Planning DTMR Department of Transport and Main Roads (Queensland) Endangered under the Nature Conservation Act 1992 (Qld) or Environment E Protection and Biodiversity Conservation Act 1999 (Cth) EAP Emergency Action Plan EC Electrical Conductivity EFO Environmental Flow Objective EIS Environmental Impact Statement EL Elevation Level EMP Environmental Management Plan EMR Environmental Management Register EMS Environmental Management Systems EO Act Environmental Offsets Act 2014 EP Act Environmental Protection Act 1994 (Qld) EPBC Act Environment Protection and Biodiversity Conservation Act 1999 (Cth) EPP (Air) 2008 Environmental Protection (Air) Policy 2008 EPP (Noise) 2008 Environmental Protection (Noise) Policy 2008 EPP (Waste) 2000 Environmental Protection (Waste) Policy 2000 EPP (Water) 2009 Environmental Protection (Water) Policy 2009 CHAPTER 1 – INTRODUCTION Seqwater Six Mile Creek Dam Safety Upgrade Project 25 January 2019 1-4 Abbreviations ABBREVIATION MEANING Environmentally Relevant Activity under the Environmental Protection Act 1994 ERA (Qld) ERP estimated residential population ESA Equivalent Standard Axles ESCP Erosion and Sediment Control Plan ESD Ecologically Sustainable Development ESP (soil) Exchangeable Sodium Percentage ET Evapotranspiration Endangered, Vulnerable or Rare listed species under the Nature Conservation Act EVR 1992 (Qld) or the Environment Protection and Biodiversity Conservation Act 1999 (Cth) EVs Environmental Values FIA Failure Impact Assessment FSL Full Supply Level GBO Genera Biosecurity Obligation Ha Hectare HEV High Ecological Value IAIA International Association of Impact Assessment IAQM The United Kingdom Institute of Air Quality Management IAS Initial Advice Statement IAR Impact Assessment Report IECA International Erosion Control Association the Agreement between the Government of Japan and the Government of JAMBA Australia for the Protection of Migratory Birds and Birds in Danger of Extinction and their Environment signed in Tokyo on 6 February 1974. Kg Kilograms kL Kilolitre km kilometre km² Square kilometre KRA Key Resource Area kV Kilovolt L Litre LC Least Concern L/s Litres per Second CHAPTER 1 – INTRODUCTION Seqwater Six Mile Creek Dam Safety Upgrade Project 25 January 2019 1-5 Abbreviations ABBREVIATION MEANING LGA Local Government Area m metre m³/s metre cubed per second mBGL Metres Below Ground Level Mg Milligrams ML Megalitre MLES Matters of Local Environmental Significance mm millimetre MNES Matters of National Environmental Significance MSDS Material Safety Data Sheet MSES Matters of State Environmental Significance MSES Wetlands High Ecological Value Wetlands of State Environmental Significance NATA National Association of Testing Authorities NC Act Nature Conservation Act 1992 (Qld) NC Reg Nature Conservation (Wildlife) Regulation 2006 NEPC National Environment Protection Council NEPM National Environment Protection Measure NEPM (Ambient Air) National Environment Protection (Ambient Air Quality) Measure NHL National Heritage List NO2 Nitrogen dioxide NOX Oxides of nitrogen NP National Park NT Act Native Title Act 1993 (Cth) OEMP Operational Environmental Management Plan PMF Probable Maximum Flood PMP Probable Maximum Precipitation PMPDF Probable Maximum Precipitation Design Flood PPE Personal Protection Equipment PPM Parts per Million QC Quality Control QGWMIP Queensland Government Water Monitoring Information Portal QH Act Queensland Heritage Act 1992 (Qld) CHAPTER 1 – INTRODUCTION Seqwater Six Mile Creek Dam Safety Upgrade Project 25 January 2019 1-6 Abbreviations ABBREVIATION MEANING QWQG Queensland Water Quality Guidelines RAMSAR The Convention on Wetlands of International Importance RE Regional Ecosystem REDD Regional Ecosystem Description Database RNE Register of National Estate ROL Resource Operations Licence ROP Resource Operations Plan SARA State Assessment and Referral Agency SDPWO Act State Development and Public Works Organisation Act 1971 (Qld) SDAP State Development Assessment Provisions SEIFA The Socio-Economic Indexes for Areas SEQ South East Queensland SIA Social Impact Assessment SILO Scientific Information for Land Owners SIP Stocked Impoundment Permit SMEC SMEC (Australia) Pty Ltd SO2 Sulphur dioxide SPP State Planning Policy TEC Threatened Ecological Communities TIA Traffic Impact Assessment TMP Traffic Management Plan TMR (Department) of Transport and Main Roads TSP Total Suspended Particulate Matter TSS Total Suspended Solids US Upstream UXO Unexploded Ordinance VM Act Vegetation Management Act 1999 (Qld) VOCs Volatile organic compounds WHL World Heritage List WONS Weeds of National Significance WQMP Water Quality Management Plan WQO Water Quality Objectives CHAPTER 1 – INTRODUCTION Seqwater Six Mile Creek Dam Safety Upgrade Project 25 January 2019 1-7 Abbreviations ABBREVIATION MEANING WROLA Act Water Reform and Other Legislation Amendment Act 2014 WRP Water Resource Plan WSSR Act Water Supply (Safety and Reliability) Act 2008 WTP Water Treatment Plant CHAPTER 1 – INTRODUCTION Seqwater Six Mile Creek Dam Safety Upgrade Project 25 January 2019 1-8 Glossary of Terms Glossary of Terms TERM DEFINITION Algal mat A thin layer of algae formed over the surface of the benthos. Allocated water Water that a person or entity has been granted an entitlement to extract. Alluvial (alluvium) Weathered material transported and deposited by the movement of water. Alluvial forests Forests growing in alluvial soils, mainly sand and silt, that a river has carried in suspension and then deposited. Alluvial plain A plain formed by the deposition of alluvial material over a long period of time. Anabat A bat detector that can record the signals of bats for computer analysis. It converts the ultrasonic echolocation signals of bats into audible electronic signals which can be recorded and processed, to assist in identification of the species. Anaerobic Having or producing no oxygen. Annual Exceedance The probability of a specified magnitude of a natural event being exceeded in any year. Probability (AEP) Annual Proportional Annual proportional flow deviation is the statistical measure of changes to flow season Flow Deviation and volume in the simulation period calculated using the formula in Technical Report 5 of "Fitzroy Basin Water Allocation and Management Planning Technical Reports" (DNRW, 1999) Anoxic Without or depleted of oxygen. Anthropogenic Effects, processes, objects or materials which do not occur in natural environments but are as a result of, or derived from human activities. Aquatic macrophyte Submerged, emergent or floating aquatic vegetation that is visible to the naked eye. Aquiclude A boundary layer that prevents soil water infiltration. Aquifer A water-bearing stratum of permeable rock, sand, or gravel, able to transmit substantial quantities of water. Aquitard A formation which contains groundwater but cannot transmit it rapidly enough to furnish a significant supply to a well or spring. Argillaceous Rocks composed of clay minerals, or having notable proportion of clay in their composition such as shale and slate. Australian Height The datum used for determining elevations in Australia which uses a national network Datum (AHD) of bench marks and tide gauges, and has set mean seal level as zero elevation. Average Recurrence The average interval (in years) between the occurrence of a flow, discharge or rainfall Interval (ARI) greater than or equal to a specified amount. B horizon The second or subsurface zone of soil
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