no edit summary
Turf reinforcement mats (TRM) may be required in swales which are designed to convey higher velocity events. Most TRM are made of synthetic fibres and intended as a permanent part of the construction (unlike a temporary [[Erosion control
*Mats should be applied with soil fill technique:
**Grade the swale and smooth the top soil, removing any debris and large rocks,
**Anchor the bottom end of the channel in a similar fashion to the top,
**Apply 15-20 mm of topsoil over the TRM, without the use of heavy machinery which can tear the mat and/or compact the soil.
**An [[Erosion control
blanket]] may be applied to protect the surface through the first one or two years.
**Irrigate until turf grass is established.