Increasing surface levels within an RPA

[stevelucocq]

I know they said grass but could a raised wooden decking be used? Just a thought but may not be practical?

[armybloke]

This scenario is the same at a site I worked at in Tiverton recently (and it was an Oak!). We overcame the levels using bespoke made gabion baskets filled with smooth stones (to improve percolation of water, oxygen and nutrients) about 20 cm across, laid terram matting over the top. Finished level of clean crush mixed with topsoil and laid with turf. There will inevitably be movement but infill with washed sharp sand and topsoil to allow grass to regrow through. You won't have a bowling green but you will have a level playing field. I am monitoring for the next 12 months or so and will let you know how we get on. Tree Officer was happy and I was happy with the combined effort to get this done. Part of the overfill was used to park a car on top so it holds the weight.