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

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SOILS AND GEOTECHNICAL 14 Bore Depth (m) Table 2-5 Acid Sulphate Laboratory Test Results (DPWS) Soil type Depth to Groundwater (m) pH after oxidation TPA (moles/ kg) GM39 0-0.6 Sand 0.2 2.8 0.015 0.49 1.05-1.5 Clayey silt 0.2 2.6 0.017 0.31 GM48 1-1.4 Sand 1.0 2.5 0.02 GM51 1.0-1.3 Sand 1.0 2.4 0.1 0.01 1.3-1.45 Sand 1.0 2.7 0.038 1.5-2.0 Sand 1.0 2.6 0.064 0.13 BH27 1.0-1.8 Sandy gravel - 2.8 0.022 GM99 1.5-1.9 Clayey silt 3.4 2.3 0.067 2.0-2.45 Clayey silt 3.4 3.0 0.021 Pump Stn W 3-3.45 Sand 2.0 2.4 0.104 4.5-4.95 Sand 2.0 3.8 0.109 6-6.45 Sand 2.0 3.8 0.056 8.55-9 Sand 2.0 2.7 0.024 GM69 3-3.45 Sand 2.5 3.6 0.022 4.2-4.65 Clay 2.5 3.6 0.023 BH34 1.5-2.0 Sandy gravel - 3.2 0.03 GM73 3.9-4.35 Sand 2.6 2.4 0.043 GM74 3.15-3.6 Clayey sand - 3.7 0.016 Pump Stn L 3.0-3.45 Clayey silt 4.3
SOILS AND GEOTECHNICAL 15 The results indicate no actual or potential acid sulphate soils based on pH before and after oxidation and that potential for acid production from these soils is very limited. Acid Sulphate Testing The methodology adopted for the acid sulphate soils investigation was based on acid sulphate guidelines established by the EPA and more recent guidelines developed by the EPA, Department of Urban Affairs and Planning and the Acid Sulphate Soils Management Advisory Committee (1997). Seventeen samples were recovered from borehole locations, stored in airtight plastic bags at below 4°C and sent to the Centre for Coastal Management at Southern Cross University for analysis. Sample analysis involved screening testing to assess pH, total sulphur (%S) and total carbon (%C). At selected locations (2) where the total sulphur content exceeded the action criteria guidelines, more detailed testing involving oxidisable sulphur (%SOx), POSA, peroxide oxidisable sulphuric acidity (kg H 2 SO 4 /tonne), total actual acidity (TAA) and total potential acidity (TPA) were undertaken with assessment of lime neutralising requirements for the soils. Laboratory acid sulphate test results are summarised in Table 2-8. Table 2-7 Action Criteria Based on ASS Soil Analysis and Soil Texture Texture Soil type Approx clay content % Action criteria Oxidisable sulphur % S Coarse Sands to loamy sands 40 0.1 64 Acid Sulphate Soils Management Advisory Committee (1977) Acid Mol H + / tonne 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: SOILS AND GEOTECHNICAL 13 soils wit
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 and 48: STORMWATER MANAGEMENT 39 4.4.7 Sedi
Page 49 and 50: STORMWATER MANAGEMENT 41 4.5.4 Swal
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
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FAUNA 65 6.1.4 Swamp Oak (32) Habit
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FAUNA 67 heathland shrub layer woul
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FAUNA 69 of the tree adjacent to th
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FAUNA 71 Common Name Scientific Nam
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FAUNA 73 Common Name Scientific Nam
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FAUNA 75 6.4.1.1 Community Habitat
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FAUNA 77 6.4.2 Problems with the Me
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FAUNA 79 6.6.3 Development of Mediu
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WATER QUALITY SENSITIVITY MAPPING 8
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VISUAL AND SCENIC QUALITY 87 Rural
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VISUAL AND SCENIC QUALITY 89 • mi
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VISUAL AND SCENIC QUALITY 91 8.3.1
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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
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LAND CAPABILITY ASSESSMENT 99 Envir
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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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