Groundwater bores 4 No onsite or on neighbouring properties Setback distance from bore complies with requirements in EPA Code of Practice 891.3 (as amended) Setback distance from bore does not comply with requirements in EPA Code of Practice 891.3 (as amended) Characteristic Level of Constraint Assessed Level of Constraint for Site Nil or Minor Moderate Land area available for LAA Exceeds LAA and duplicate LAA and buffer distance requirements Meets LAA and duplicate LAA and buffer distance requirements Insufficient area for LAA Landslip (or landslip potential) 5 Nil Minor to moderate High or Severe Rock outcrops (% of surface) <10% 10-20% >20% Slope Form (affects water shedding ability) Convex or divergent Straight side-slopes Concave or convergent gradient 6 (%) (a) for absorption trenches and beds <6% 6-15% >15% (b) for surface irrigation <6% 6-10% >10% slopes
(c) for subsurface irrigation <10% 10-30% >30% Soil Drainage 7 (qualitative) No visible signs or likelihood of dampness, even in wet season Some signs or likelihood of dampness Wet soil, moisture-loving plants, standing water in pit; water ponding on surface, soil pit fills with water Characteristic Level of Constraint Assessed Level of Constraint for Site Nil or Minor Moderate Major Stormwater run-on Low likelihood of stormwater run-on High likelihood of inundation by stormwater run-on Surface waters - setback distance (m) 9 Setback distance complies with requirements in EPA Code of Practice 891.3 (as amended) Setback distance does not comply with requirements in EPA Code of Practice 891.3 (as amended) Vegetation coverage over the site Plentiful vegetation with healthy growth and good potential for nutrient uptake Limited variety of vegetation Sparse vegetation or no vegetation Characteristic Level of Constraint Assessed Level of Constraint for Site Nil or Minor Moderate Major
Mottling (see Munsell Soil Colour Chart) Very well to well-drained soils generally have uniform brownish or reddish colour Moderately well to imperfectly drained have grey and/or yellow brown mottles and in the mottled areas occur higher in the profile the less the soil Poorly drained have predominant grey colours with yellow brown or reddish brown mottles located along root channels, large pores and cracks pH 3 (favoured range for plants) 5.5 - 8 is the optimum range for a wide range of plants; 4.5 - 5.5 suitable for many acid-loving plants <4.5, >8 Characteristic of Constraint Assessed Level of Constraint for Site Nil or Minor Moderate Major Rock Fragments (size & volume %) 0 – 10% 10 – 20 % >20% Sodicity 4 (ESP %) <6% 6 – 8% >8%
Soil Depth Topsoil: <200 mm Minor Shallow subsurface irrigation in topsoil recommended Subsoil: >200 mm. Total soil depth greater than 1.5 m and no hardpans occur. Minor NN Feature Assessment Level of Constraint Mitigation Measures Soil Permeability & Design Loading Topsoil: Massive loam: 1.4-3.0 m/day saturated conductivity (Ksat) (AS/NZS1547:2012); 3.5 mm/day Design Loading Rate (DLR) for irrigation system NN
Rates (Code, 2013). Subsoil: Moderately structured medium clay: <0.06 m/day saturated conductivity (Ksat) (AS/NZS1547:2012); 2 mm/day DLR for irrigation system (Code of Practice, 2013). Moderate Shallow subsurface irrigation in topsoil recommended Soil Texture & Structure Topsoil (<200 mm): Massive loam (Category 2) Minor NN Subsoil (>200 mm): Moderately structured medium clay (Category 6) in accordance with AS/NZS/NZS 1547:2012 Major Shallow subsurface irrigation in topsoil recommended Watertable Depth Groundwater not encountered, pit terminated at 1.5 m. (<10%) yellow Moderate Shallow subsurface