Culvert Sumps Sumps should be excavated at the entry to road culverts to trap coarse sediments. They should be large enough for an excavator to clean them out without damaging the culvert. It is recommended that they be at least 1m deep, 1m wide and preferably 2m long. The bottom of the sumps should be at least 300mm below the bottom of the culvert pipe to allow room for sediment to drop out. This significantly reduces sediment going into waterways. Ro Road and Track Maintenance Regular maintenance minimises sediment run-off and the potential for erosion. Roads and tracks should be graded regularly and water tables and culvert entries cleaned out regularly during harvesting. Ongoing regular maintenance should occur. This not only helps to protect the environment, it also protects the investment. Pull Back Minor Tracks Skidder tracks should have the fill pulled back on to the track so that the ground profile is as close to what it was previously. Any tracks that have Council approval to remain open for access must have water controls installed. Reinstated after harvest Cut 12 a d Culvert 1 metre ertem 1 Sump Water table 2 metres