Marlborough Sounds Resource Management Plan d) Raw materials likely to cause odour shall be blended with other compostable materials and the composting pile covered with a minimum of 200 millimetres of bark or similar material; e) The composting pile shall be constructed in such a manner to ensure good air flow through the pile in that the composting process is essentially aerobic. Forced ventilation of the composting piles may be required at the discretion of the Council as a condition of the grant of any consent; and f) Leachate shall be collected, or otherwise controlled and disposed in a complying manner. Any leachate collected or stored on the premises shall not generate odour. 36.2.4.2 Conditions In granting consent the Council may impose conditions relating to any or all of the following matters: a) The best practicable option to prevent or minimise any actual or likely adverse effects on the environment; b) Duration of the consent; c) Compliance monitoring programme; d) Financial contribution and/ or bond; and e) Administrative charges. 36.2.5 Excavation over 1,000m 3 36.2.5.1 Standards 36.2.5.1.1 Gradients The gradient of any side cut excavation must not exceed an average of 9.5º (1:6) and must not exceed 11.3º (1:5) along any length of more than 20 metres. 36.2.5.1.2 Water Control and Culverts Stormwater controls, watertable cut-offs and culverts are to be installed to ensure that erosion does not occur on the inside edge of the cut. No culvert size less than 300mm may be used to drain any side cut excavation. 36.2.5.1.3 Stabilisation Batters and side castings are to be stabilised by appropriate measures such as seeding, compacting, drainage and/ or other methods of revegetation. 36.2.5.1.4 Run-off Run-off from watertables or surfaces of side cut excavations is to be directed to stable land areas. 36.2.5.1.5 Crossings Stream crossings are to be stable and suitable for fish passage in fish bearing stretches of the river. 36.2.5.1.6 Retaining Walls Retaining walls and other structures are to be designed in accordance with good engineering practice. 36 – 25A