Pressure treated lumber isn't toxic, so it makes an acceptable edger.

While new techniques for treating lumber have been deemed safer, they still require precautionary measures.

Although pesticides are used to treat lumber, preserving lumber protects natural resources (in the short term) by enabling wood products to last longer.

But there are misconceptions about the properties of pressure treated lumber, say the experts.

These plants included facilities for making trusses, treated lumber, boards, pre-hung doors, steel and nails.

This typically is built on-site from pressure treated lumber, featuring a simplistic design of vertical baluster spaced every 3.5" to comply with building code.

In this case the entire pier should be replaced with pressure treated lumber of the same dimension.

The most common residential deck railing design is built on-site using pressure treated lumber, with the vertical balusters regularly spaced to meet building code.

Deck railing is generally built from pressure treated lumber, with pressure treated wood posts to give structural strength.

Some of the tar may have been used to treat lumber at the nearby lumber manufacturers.