"Boots Crofoot" wrote in message
. ..
it is not rocket science, just fill the hole with soil

No, no. You need to backfill in layers- this is very important!

First apply a layer of 'organic material' about 3" thick, then apply a 1"
layer of 'brown earth', then add a 5" layer of 'dirt', and repeat until
the hole is about 4" from ground level. The last layer MUST be 'brown earth'
4" deep spread evenly from North to South.

Sow cover grass from East to West with a reciprocal hand motion.

Larry