Anyone with experience in remediating very salted soil?

Looking at a soil test on a project that is reading: Soluble Salts mmmho/cm at 2.88. pH is 8.3.

This is an old horse field that was flood irrigated in a high desert environment in Colorado USA: 5400′ elevation 9″ precipitation per year. The goal is an irrigated, mixed annual perennial garden.

There is visible salting at the surface in a few spots. It has filled in with desert grass and weeds. This initial test was down to 8″, but will be testing to 3′ and 6′ to see how deep it goes and if there are any water table issues.

Any thoughts or experience is appreciated.

Soil test