Over the river and through the woods, to the sawmill we go

On a Sunday drive after Meeting, Larry takes us to a sawmill in the wild woods of Virgil. (Sounds Homeric, doesn't it?) We debate the properties of Locust and Larch woods and conclude:
We'll take a host of locust posts, and Larry will labor with larch lumber. And larch decking. Cory the Woodsman has the logs in his yard and will plane them down. The deck boards will be a full inch and a quarter, providing extra stability.
For the decking we were looking for an alternative to pressure treated lumber, which still has heavy metals impregnating the wood as a preservative. And there are issues getting the right fasteners with P.T. because the chemicals in the wood can interact with the metal in the fasteners and degrade. Also, to deliver locally takes less gasoline or diesel than to deliver from farther away.
We still might use a product called Timbersil for the storage shed by the water. Timbersil is impregnated with a product that acts like glass, making insects shun it and fire have a hard time starting. It also comes with an impressive 40-year guarantee. Its price-point is about two times regular pressure treated, I'm told.