Marlborough Sounds Resource Management Plan h) No adverse effect on road traffic movements or road safety; i) Woody vegetation (except for plantation trees and noxious plants under the Noxious Plants Act 1978) shall not be removed by chemical, fire or mechanical means within 8 metres of any permanently flowing river, or any lake, wetland or sea; j) Run-off from water tables, stormwater drains or excavation surfaces is to be directed to stable land areas; k) Batters and side castings are to be stabilised by appropriate measures such as seeding, compacting, drainage and/ or other methods and revegetation; l) The natural clarity of any permanently flowing river, lake wetland or sea shall not be conspicuously reduced due to sediment or sediment laden discharge originating from the site of the quarrying and/ or mineral extraction; m) The quarry and/ or mineral extraction site is to be stable when subject to a storm event of return frequency of 1 in 10 years or less; n) No vehicle may be operated within 8 metres of any permanently flowing river, or the margin of any wetland, lake or sea; and o) Stormwater controls are to be installed to ensure that sediment is not transported to adjacent land or to any permanent flowing river, or to any wetland, lake or sea. 36.4.3.13 Gravel Extraction 36.4.3.13.1 Assessment Criteria a) The effects of the activity on vegetation and the form and shape of the bed and banks of the river; b) The location and form of stream crossings; c) The operation of machinery involved in the extraction, transport and processing of gravel; d) The effects of the activity on any structures in, on or over the bed and banks of the river; and e) The final form, including the variety of channel widths and depths, of the bed of the river and the banks of the river. 36.4.3.14 Vegetation Clearance 36.4.3.14.1 Standards a) Any increase in the concentration of suspended sediment shall not be more than 20% as measured by the ‘black disk’ method, not withstanding that the concentration of suspended sediment in run-off water shall not exceed 200 grams/ cubic metre at any point of discharge to any receiving water. The effects on the receiving water are to be measured at a distance downstream of two widths of the receiving watercourse or 50 metres, whichever is the lesser; 36 - 42