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Erosion & Sediment Control Strategy

for Eucalypt Plantation Establishment on the North Coast of NSW
July 1997 (continued)

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2. OVERVIEW FOR PLANTATION ESTABLISHMENT

2.1 Legal Restrictions
The following legislation controls trees and other vegetation destruction in NSW and clearing and land disturbance for plantation establishment may necessitate consultation with the relevant consent authority.

ACT RELEVANT AUTHORITY
Environmental Planning and Assessment Act, 1979
- Local Environmental Plan (Tree Preservation Orders)
- Regional Environmental Plan
- State Environmental Planning Policy (SEPP)
 No 14 Coastal Wetlands
 No 26 Littoral Rainforest
 No 44 Koala
 No 46 Native Vegetation Clearing
Local Councils 
Land & Water Conservation
 Soil Conservation Act, 1938
 - (Protected Land)

 Land & Water Conservation
 Crown Lands Act
 - (Lease, Licenses, Enclosure Permits)
 Land & Water Conservation
 River and Foreshores Improvement Act, 1948
 - (Disturbance in Rivers, Lakes, Estuaries)
 Land & Water Conservation
 Clean Water Act, 1970
 Pollution Control Act, 1970
 Environmental Offences and Penalty Act, 1989
 - (Pollution of Water and Drainage Lines)
 
 Environment Protection Authority
 
 Pesticides Act, 1978
 - (Killing trees with Herbicides)
 
 Environment Protection Authority
 
 Forestry Act, 1916
 - (Vacant Crown Land, Leases, Permissive    
   Occupancies,   License, Reserved Road)
 State Forests
  Fisheries Management Act, 1994
 - (Fish Habitat in Wetlands)
 Local Councils
  Bush Fires Act, 1949
 - (Burning Tree Debris)
 Local Councils
 National Parks and Wildlife Act, 1974
 - (Flora , Fauna and Aboriginal Sites)
 Threatened Species Conservation Act, 1995
 - (Flora and Fauna, Presumed Extinct, Endangered    and Vulnerable)
 National Parks and Wildlife Service 
 Timber Plantations (Harvest Guarantee)Act, 1995  Urban Affairs and Planning

2.2 Planning
Eucalypt plantation establishment should be planned before operations commence. The following general principles should be applied

  • Plantation establishment operations may contribute to soil erosion and sedimentation. This should be considered at the planning stage.
  • The soil erosion effects of all plantation establishment operations including roading, clearing, debris burning, weed control, ripping, cultivation, hazard reduction and wildfire control should be taken into account before operations start.
The following planning activities should be undertaken:
  • A site inspection should be undertaken to assess - climate, geology, soils, landform, drainage, vegetation, existing and potential erosion.
  • A 'Site Map' should be used to collate site information.
  • A 'Plantation Establishment Plan' should be prepared. This plan should be based on information gathered, as well as principles of runoff, erosion and sediment control, and ground cover management.
2.3 operations
The following general principles should be applied when implementing the various phases of the eucalypt plantation establishment program.
(a) Clearing
  • Clearing should be timed to utilise existing ground cover and/or coincide with periods conductive to cover up establishment and growth.
  • Land should be cleared and tree debris windrowed, stacked and burnt using practices which will minimise soil erosion and sedimentation.
(b) Site Preparation
  • Ripping/cultivation operations should also be timed to utilise existing ground cover and/or coincide with periods conductive to cover crop establishment and growth.
  • Temporary sediment control may be required until revegetation of bare, disturbed areas has become effective. Where required, sediment traps should be constructed in conjunction with clearing operations to prevent sediment leaving the site.
  • Ripping/cultivation of tree planting lines should conform to design and on site ground survey. Cultivation includes ploughing and mounding activities.
  • The use of machinery should be suspended when the soil is saturated and/or runoff is occurring.
(c) Drainage Feature Management
Designated drainage features should be protected during plantation establishment operations. The type of protection will depend mainly on the soil type, type of drainage feature and will be influenced by catchment size.
  • Vegetation drainage feature protection areas (DFPA's) should be retained and maintained along designated drainage features to protect the feature, filter sediment and for the safe (non-erosive) disposal of stormwater runoff.
  • Ground cover should be maintained and where necessary re-established in designated drainage features and DFPA's for the safe (non-erosive) disposal of stormwater runof
(d) Roading
Roads are prone to erosion because construction involves significant soil disturbance and runoff can be concentrated. Cut and fill batters, table drains and road pavement may all be subject to erosion.
  • Location of roads should be effectively planned in relation to slope, terrain, drainage, soils, natural hazard areas and protection zones.
  • Road construction undertaken at plantation establishment stage should include access to the plantation and access within the plantation.
  • Road and fire trail construction at plantation establishment stage should be adequate for fire prevention and fire control activities from the outset of plantation establishment.
  • Road construction should be programmed to utilise existing ground cover and/or coincide with periods conductive to cover crop establishment and growth.
  • Roads should be constructed so that grades and batter cuts are minimised.
  • Roads and fire trails should be drained immediately following construction and maintained while in use to ensure runoff does not concentrate and reach erosive velocities.
  • The area of road and the number of watercourse and drainage line crossings should be minimised.
  • All recoverable topsoil should be stripped and stockpiled during road construction for use in revegetation work.
  • Following road construction all disturbed areas should be immediately revegetated to minimise soil exposure and lessen the potential for erosion.
(e) Fire Management
Recognising that wildfire may greatly increase the risk of soil erosion, the planning, design and construction of roads, firetrails and firebreaks should be sufficient to significantly reduce the risk of wildfire entering a plantation, and to minimise the size of any fires inside a plantation.

(f) Ground Cover Management
Ground cover should be established and/or maintained to protect bare soil against raindrop action, increase water infiltration, decrease stormwater runoff, and protect soil against rill erosion and other erosive processes.

  • Ground cover retention should be optimised and soil disturbance minimised during roading, clearing and site preparation activities.
  • Retention and replacement of topsoil should be optimised.
  • Bare, disturbed soil areas should be immediately sown (within two weeks) with cover crops, or cover crops and pasture. This includes disturbed drainage features, new roads, bare areas between tree rows and bare areas resulting from burning tree debris.
(g) Herbicide Management
While still recognising the significance of reducing early weed competition to tree seedlings, herbicide weed control program that ensure adequate retention, or ease of re-establishment of live ground cover should be implemented.

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