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Dawn Developments Ltd/467374673/Queen’s Quay Masterplan EIA/KD 04/01/2012 Major Mixed Use Development, Queen's Quay, Clydebank EIA Scoping Report throughout Scotland, together with supporting technical documentation 7 . All Carboniferous formations (except mudstones and the Passage Group) have been assigned a moderate productivity rating. Carboniferous mudstones are assigned a low productivity rating. Groundwater flow within these Carboniferous rocks is predominantly through fractures and other discontinuities. Intergranular flow may be important. Alluvial sand and gravel is assigned a high productivity rating. Alluvial clays and the low and moderate permeability glacial tills of Central Scotland are classified as non-aquifers. 8.3.2.2 Water quality Within SEPA’s RBMP groundwater within bedrock and localised sand and gravel aquifers in the vicinity of the site is assigned to overall status classification ‘poor’ based on its poor chemical quality, which is attributed to diffuse pollution impacts associated with chemical production and historical mining activity. 8.3.3 Flood risk A Flood Risk Assessment (FRA) for the Queens Quay development area was undertaken on behalf of URS Corporation Ltd by Dr JF Riddell in February 2006 8 . This identified that the critical flood risk to the Development site is flooding associated with extreme coastal and tidal events and not from high fluvial flow within the River Clyde. Estimates of coastal and tidal flood levels during extreme flood events at Queens Quay are: • 4.8m AOD during the 200 year event • 5.1m AOD during the 500 year event. These figures are based on still water levels and do not account for wave action or allowance for climate change. Based on these figures and topographic data available for the site, there is localised area of the brownfield site which sits below the estimated 1 in 200 year flood level. This portion of the site will therefore be defined as at flood risk. As the duration of flooding events would be linked to tidal movements, flooding of the site is unlikely to last more than an hour. Flood risk from tidal and coastal flooding is likely to be mitigated at the site as part of the proposed Development. This may include land raising sections of the site which currently sit below the 1 in 200 year event flood level and has been addressed in the FRA. No other flooding issues were identified within the FRA for the Queens Quay Development. 7 Macdonald AM, Ball DF, and O Dochartaigh BE (2004). A GIS of Aquifer Productivity in Scotland: Explanatory Notes. British Geological Survey Commissioned Report CR/04/047W. 8 Dr John Riddell. 2006. Proposed Development, Queens Quay, Clydebank. Flood Risk Assessment. Page 37 Final for Issue
8.4 Potential receptors Dawn Developments Ltd/467374673/Queen’s Quay Masterplan EIA/KD 04/01/2012 The water environment receptors include: Major Mixed Use Development, Queen's Quay, Clydebank EIA Scoping Report • River Clyde (downstream of the site and upstream to the tidal limit); • The River Cart (within its tidal limit); and • groundwater beneath the site. 8.5 Key issues The proposed Development has the potential to result in a number of effects on water quality. Water quality effects will relate to the exposure to/ prevention of exposure to pollutants. During the construction works there is potential for works activities to cause pollution of soils, surface waters and groundwaters. The release of potentially polluting material (e.g. silts, organics, salts, concrete, fuels, greases, oils and other chemicals/ compounds) during the construction phases has the potential to result in significant adverse impacts to the water environment. The magnitude and significance of such an event will depend upon the scale of the pollution incident and the type of pollutant released. Given the immediate proximity of the works to the River Clyde, if appropriate measures are not implemented then polluting material may directly or indirectly enter the Inner Clyde estuary. Pollutants can also result in adverse impacts on aquatic and riparian flora and fauna. Due to the large channel volume of the River Clyde adjacent to the site and its tidal nature, there is liable to be immediate dilution of any polluting material entering the watercourse. The result is that a small magnitude polluting event would not be anticipated to have a significant effect on the water quality of the Inner Clyde Estuary. Having said this, there is potential for polluting material to be carried upstream and downstream and into the smaller tributaries of the Clyde. In these smaller watercourses, the magnitude of polluting effects on water chemistry and aquatic/ riparian habitats could potentially be much greater. The hydraulics and hydromorphology of the River Clyde will not be significantly affected by the proposed Development. Works to the river banks and river front structures will comprise a like for like replacement of the existing quay walls and the only direct water inputs from the site to the River Clyde will be routed via an appropriately designed Sustainable Urban Drainage System (SUDS). 8.6 Proposed studies for EIA A description of the water environment baseline (hydrology, flood risk, water quality and hydrogeology) will be provided within the ES. This baseline will be derived by undertaking a detailed desk study and review of water quality, flood risk and hydrogeomorphological data available for the site and the Inner Clyde Estuary. A review of relevant ground Page 38 Final for Issue
Page 1 and 2: Major Mixed Use Development, Queen'
Page 3 and 4: CONTENTS Dawn Developments Ltd/4673
Page 5 and 6: CONTENTS Dawn Developments Ltd/4673
Page 7 and 8: 1.2.2 EIA scoping Dawn Developments
Page 9 and 10: Dawn Developments Ltd/467374673/Que
Page 13 and 14: 3. PLANNING AND POLICY FRAMEWORK Da
Page 17 and 18: 3.4.1.1 National Planning Framework
Page 21 and 22: 4. EIA SCOPING STUDY METHODOLOGY 4.
Page 23 and 24: 4.3.2 Public exhibition Dawn Develo
Page 27 and 28: 5.2.4 Listed Buildings Dawn Develop
Page 29 and 30: 5.3.2 Local Nature Reserves Dawn De
Page 31 and 32: 6. ECOLOGY & NATURE CONSERVATION 6.
Page 33 and 34: 6.6 Proposed studies for EIA Dawn D
Page 35 and 36: 7. LANDSCAPE & VISUAL 7.1 Introduct
Page 39 and 40: 8. WATER RESOURCES 8.1 Introduction
Page 41: 8.3.1.1.1 River Clyde (Inner Clyde
Page 45 and 46: 9. GEOLOGY & SOILS 9.1 Introduction
Page 47 and 48: 9.6 Key issues Dawn Developments Lt
Page 51 and 52: 10.2.1 Guidance and significance cr
Page 55 and 56: 10.5 Queen’s Quay traffic compari
Page 57 and 58: 11. NOISE & VIBRATION 11.1 Introduc
Page 61 and 62: 12.5 Key issues Dawn Developments L
Page 67 and 68: 14.3 Baseline Dawn Developments Ltd
Page 73 and 74: 15.4 Format of the environmental in
Page 75 and 76: IHT Institute of Highways and Trans
Page 85 and 86: Figure 2: Draft Outline Masterplan
Page 87 and 88: Figure 4: Search Area Buffers Dawn
Page 89 and 90: Figure 6: Air Quality Management Ar
Page 91: Figure 8: Core paths Dawn Developme

Supporting documents - Renfrewshire Council

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