Rod Out back wrote in message
...
Maybe gardening stores have access to untreated sleepers; I would hope so,
when looking at how nasty creosote is...I would be very insistent to hear
how they guarantee their sleepers dont have anything that might leach into
the soil.

Our neighbour used to have untreated railway sleepers in his retaining wall.
It only lasted about 10 years before it needed replacing. Obviously this
would be something to keep in mind if you are looking at used sleepers.

I recently read an interesting article about CCA treated playgrounds which
manufacturer sealed all wood as an additional preventive for CCA leeching.
The article at http://www.projplay.org/pressure_treated_lumber.htm makes
interesting reading for anyone with CCA concerns.

Susan