smiths lake planning study volume 1: text - Great Lakes Council

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STORMWATER MANAGEMENT 40 Figure 4-7 Stormwater Infiltration Measures 4.5.3 Overland Flow/Vegetation Filtration Wherever possible, excess stormwater should be passed off-site as diffuse overland flow, preferably being directed through areas of dense vegetation to both slow flows, filter pollutants, and encourage infiltration. Use of locally specific, native vegetation is preferred. Figure 4-8 Overland Flow SMITHS_LAKE_PLANNING_STUDY.DOC O C E A N I C S A U S T R A L I A
STORMWATER MANAGEMENT 41 4.5.4 Swale Drainage Given the sandy nature of soils of much of the SLA and SLVA areas, swale drainage is recommended. Experience elsewhere in Australia and overseas has shown swales to be an extremely effective component of a stormwater treatment system where: • slopes are moderate (1000m 2 ) are proposed. With appropriate road layouts (ie. placing minor roads around contours), these criteria can all be satisfied in the area. There are many unintentional (and in some cases very steeply sloping) examples of such swales already present within the SLVA (Figure 4.9). Figure 4-9 Existing Roadside Swale - SLVA 4.5.5 Appropriate Housing Form One of the major potential impacts that could occur due to expanded development of some of the steeper portions of the SLVA will occur during the housing construction phase. In this regard, WBM Oceanics Australia strongly recommend that for all areas identified as having high water quality sensitivity, that only ‘pole’ housing (which has minimal lot scale earth disturbance) be allowed. In many areas of SLVA (Figure 4.10), such housing is presently used with considerable success. Figure 4-10 Existing Pole House - SLVA For areas with moderate sensitivity, all efforts should be made to minimise earthworks, possibly by allowing ‘combined’ slab on ground and pole housing. We would recommend ‘conventional’ slab on ground construction only for areas of low sensitivity. SMITHS_LAKE_PLANNING_STUDY.DOC O C E A N I C S A U S T R A L I A
Page 1 and 2: SMITHS LAKE PLANNING STUDY VOLUME 1
Page 3 and 4: CONTENTS I CONTENTS 1 INTRODUCTION
Page 5 and 6: CONTENTS III 11.1 Sewer 128 11.2 Ot
Page 7 and 8: LIST OF FIGURES V Figure 8-1 Visual
Page 9 and 10: INTRODUCTION 1 1 INTRODUCTION 1.1 G
Page 11 and 12: INTRODUCTION 3 • visual quality;
Page 13 and 14: SOILS AND GEOTECHNICAL 5 2.2.2 Fiel
Page 15 and 16: SOILS AND GEOTECHNICAL 7 2.3.3 Geol
Page 17 and 18: SOILS AND GEOTECHNICAL 9 Table 2-3
Page 19 and 20: SOILS AND GEOTECHNICAL 11 rather th
Page 21 and 22: SOILS AND GEOTECHNICAL 13 soils wit
Page 23 and 24: SOILS AND GEOTECHNICAL 15 The resul
Page 25 and 26: SOILS AND GEOTECHNICAL 17 • RCA11
Page 27 and 28: SOILS AND GEOTECHNICAL 19 to steepe
Page 29 and 30: SOILS AND GEOTECHNICAL 21 Based on
Page 31 and 32: SOILS AND GEOTECHNICAL 23 • Mediu
Page 33 and 34: SOILS AND GEOTECHNICAL 25 There are
Page 35 and 36: FLOODING AND DRAINAGE 27 3 FLOODING
Page 37 and 38: FLOODING AND DRAINAGE 29 3.2 Floodi
Page 39 and 40: FLOODING AND DRAINAGE 31 3.2.3 Floo
Page 41 and 42: FLOODING AND DRAINAGE 33 the perime
Page 43 and 44: STORMWATER MANAGEMENT 35 This study
Page 45 and 46: STORMWATER MANAGEMENT 37 Figure 4-4
Page 47: STORMWATER MANAGEMENT 39 4.4.7 Sedi
Page 51 and 52: STORMWATER MANAGEMENT 43 Table 4-1
Page 53 and 54: FLORA 45 characteristics. Some vege
Page 55 and 56: FLORA 47 mahogany (Eucalyptus robus
Page 57 and 58: FLORA 49 Distribution: This forest
Page 59 and 60: FLORA 51 Distribution: This forest
Page 61 and 62: FLORA 53 5.2.23 Scrub (224) Structu
Page 63 and 64: FLORA 55 Species Significance & Dis
Page 65 and 66: FLORA 57 Species Significance & Dis
Page 67 and 68: FLORA 59 5.4.7 Swamp Oak (32) Distr
Page 69 and 70: FLORA 61 5.4.17 Spotted Gum (70) Di
Page 71 and 72: FLORA 63 Forest Type Description Co
Page 73 and 74: FAUNA 65 6.1.4 Swamp Oak (32) Habit
Page 75 and 76: FAUNA 67 heathland shrub layer woul
Page 77 and 78: FAUNA 69 of the tree adjacent to th
Page 79 and 80: FAUNA 71 Common Name Scientific Nam
Page 81 and 82: FAUNA 73 Common Name Scientific Nam
Page 83 and 84: FAUNA 75 6.4.1.1 Community Habitat
Page 85 and 86: FAUNA 77 6.4.2 Problems with the Me
Page 87 and 88: FAUNA 79 6.6.3 Development of Mediu
Page 89 and 90: WATER QUALITY SENSITIVITY MAPPING 8
Page 95 and 96: VISUAL AND SCENIC QUALITY 87 Rural
Page 97 and 98: VISUAL AND SCENIC QUALITY 89 • mi
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VISUAL AND SCENIC QUALITY 91 8.3.1
Page 101 and 102:
VISUAL AND SCENIC QUALITY 93 Sensit
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LAND CAPABILITY ASSESSMENT 95 9 LAN
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LAND CAPABILITY ASSESSMENT 97 Time
Page 107 and 108:
LAND CAPABILITY ASSESSMENT 99 Envir
Page 109 and 110:
LAND CAPABILITY ASSESSMENT 101 Envi
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ABORIGINAL AND EUROPEAN HERITAGE 10
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INFRASTRUCTURE 129 11.2 Other Servi
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BUSHFIRE MANAGEMENT INVESTIGATION 1
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LAND SUITABILITY ASSESSMENT 139 13
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LAND SUITABILITY ASSESSMENT 141 lin
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LAND SUITABILITY ASSESSMENT 143 13.
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LAND SUITABILITY ASSESSMENT 145 The
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LAND SUITABILITY ASSESSMENT 147 13.
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LAND SUITABILITY ASSESSMENT 149 The
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REFERENCES 151 Floyd, A.G. (1990)
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