• the key influencing factors <strong>of</strong> cyclones and other severe weather events and theirinteraction in relation to the assimilation and transport <strong>of</strong> pollutants entering marinewaters from, or adjacent to, the project area.Describe the environmental values <strong>of</strong> the coastal resources <strong>of</strong> the affected area interms <strong>of</strong> the physical integrity and morphology <strong>of</strong> landforms created or modified bycoastal processes.Describe the tidal hydrodynamics <strong>of</strong> the project area and the adjoining tidal waterwaysin terms <strong>of</strong> water levels and current velocities and directions at different tidal states.Undertake two- and three-dimensional modelling. Provide details <strong>of</strong> water levels andflows associated with historical and predicted storm surges.Describe the wave climate in the vicinity <strong>of</strong> the project area and the adjacent beachesincluding inter-annual variability and details <strong>of</strong> historical and predicted extreme waveconditions generated by tropical cyclones or other severe storm events.Describe the hydrology <strong>of</strong> the area and the adjacent catchments <strong>of</strong> the rivers and theassociated freshwater flows within the study area and the adjoining tidal waterways interms <strong>of</strong> water levels and discharges. Detail the interaction <strong>of</strong> freshwater flows withdifferent tidal states, including storm tides. Describe inter-annual variability and details<strong>of</strong> historical and predicted floods including extent, levels and frequency. Flood studiesshould include a range <strong>of</strong> annual exceedence probabilities for affected waterways,where data permits.Predict the likely changes to hydrodynamics (including water levels, currents, waveconditions and freshwater flows) and sedimentation in the project area due to climatechange.Potential impacts and mitigation measuresDescribe the potential changes to the hydrodynamic processes and local sedimentationresulting from the construction and operation <strong>of</strong> the project, including dredging anddredge spoil disposal. This should include:• impacts on tidal flows and water levels• changes to sediment transport patterns.This assessment should also discuss the potential impacts associated with extremeevents such as storm tide flooding (see also Part B, Section 8.3 <strong>of</strong> this TOR). This mustinclude an assessment <strong>of</strong> the vulnerability <strong>of</strong> the project to storm tide flooding and thepotential <strong>of</strong> the project to affect vulnerability to storm tide flooding on adjacentproperties.When assessing the hydrodynamics <strong>of</strong> the area and movement <strong>of</strong> sediment along thecoast, consider coastal processes such as erosion and accretion at adjacent locations.5.3.2. Coastal water qualityDescription <strong>of</strong> environmental valuesProvide baseline information on water quality <strong>of</strong> coastal waters and areas potentiallyaffected by sediment run-<strong>of</strong>f or dredging. This information should include (but is not- 32 - Contents <strong>of</strong> the EISDudgeon Point Coal Terminals Project<strong>Terms</strong> <strong>of</strong> reference for an environmental impact statement
necessarily limited to) general physical and chemical water quality parameters such asdissolved oxygen, pH, metals and metalloids, nutrients (organic carbon, nitrogen,phosphorus and silicate), temperature, salinity, hydrocarbons, contaminants andturbidity/light attenuation, photosynthetically active radiation (PAR), phytoplanktonpigment analyses, pathogens and parasites.Define and describe the environmental values and water quality objectives, referring to:• EPP (Water) 2009• <strong>Queensland</strong> Water Quality Guidelines (Department <strong>of</strong> Environment and ResourceManagement 2009b)• Australian and New Zealand Guidelines for Fresh and Marine Water Quality(Australian and New Zealand Environment and Conservation Council & Agricultureand Resource Management Council <strong>of</strong> Australia and New Zealand 2000).Dredging and disposalIn the context <strong>of</strong> the DMP,required for development approval under the Coastal Act,describe the method, location and issues associated with both the dredging anddisposal <strong>of</strong> dredge spoil material, including the following:• Undertake two- and three-dimensional sediment plume modelling (as required),including likely dispersion and re-suspension from both dredging operations anddredge spoil disposal during the full range <strong>of</strong> hydrodynamic conditions and weatherevents (including ‘worst case’ conditions). Include a justification <strong>of</strong> the assumptionsand parameters used to model ‘worst case’ conditions, including data source, qualityand any uncertainties.• Describe the proposed marine water quality monitoring regime (receivingenvironment monitoring program—REMP) before, during and after dredging anddisposal, including any required triggers for actions established by a DMP. Provideinformation describing the estimated extent <strong>of</strong> mixing zones for contaminants <strong>of</strong>potential concern.Provide details <strong>of</strong> the physical and chemical qualities <strong>of</strong> likely dredged materials,including the size grading, potential acid sulfate soils (identifying sulfidic or organicsources <strong>of</strong> acidity if detected), contaminants, nutrients, metals and metalloids, andindurated (hardened or cemented) layers.Obtain this information by implementing a sediment sampling and analysis plan (SAP)prepared in accordance with the NAGD (Commonwealth <strong>of</strong> Australia 2009). The EISmust also include a SAP implementation report prepared in accordance with the NAGDand other relevant guidelines.Where possible, present this information as a map <strong>of</strong> sediment types based on theirphysical and chemical properties and include depth pr<strong>of</strong>iles.The criteria used to assess the results <strong>of</strong> acid sulfate soils (ASS) screening tests, toidentify actual ASS (AASS) or potential ASS (PASS), must be taken from the<strong>Queensland</strong> Acid Sulfate Soil Technical Manual. The action criterion from the‘chromium’ suite <strong>of</strong> tests, which triggers a requirement for ASS disturbance to beContents <strong>of</strong> the EISDudgeon Point Coal Terminals Project<strong>Terms</strong> <strong>of</strong> reference for an environmental impact statement- 33 -
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