Installation
1. Refer to approved plans for location, extent, and application details. If there are questions or problems with the location, extent, or method of application contact the engineer or responsible on-site officer for assistance.
2. Spread enough gravel to completely cover the surface of the soil at the density or thickness specified in the approved plans. If the application density is not supplied, then apply at a thickness of at least twice the mean rock size.
3. Make all necessary adjustments to ensure any run-on stormwater flow is allowed to pass freely across the treated area following its natural drainage path.

Maintenance
1. Inspect all treated surfaces fortnightly and after runoff-producing rainfall.
2. Check for rill erosion, or dislodgment of the gravel.
3. Replace any displaced gravel to maintain the required coverage.
4. If wash-outs occur, repair the slope and reinstall surface cover.
5. If the gravelling is not effective in containing the soil erosion it should be replaced, or an alternative erosion control procedure adopted.