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30 metre long retaining wall ..3.3 at its highest point

retaing wall that has collasped. wall ran underneath a room. looking for wooed pole and back filled retaining wall or gabion type retaining wall.. wall goes from aprox 1 metre high to 3.3 metres high..it is 16 metres long at the 3.3 height and then drops down to aprox 1 metre again..total length aprox 30metres. i need this done as soon as is possible,, it is an easy access site. I am open to any retaining wall design to cope with the situation. This is a replacement retaining wall not a new projest, it was a collapsed retaining wall