Thanks for your previous answers. We have now excuvated the site and found our soak away is 14ft x 5ft and about 4ft deep. The problem we now have is part of the 14ft wall with the soak away pipe in...
we have discovered a soak away in our garden that was just covered with tarpoline hence the garden sunk. Now we have un covered the soak away how do we cover it properly so that it is safe?