You'll be able to tell as you're shoveling it in, but, one thing to watch out for is sometimes 'fill' soil is low on organics. That'll hurt some when it comes to water retention and nutrients.
Sometimes you're lucky and it's mostly topsoil. (Grass chunks are a good sign, although, add to weed issues) mixing in a bale of peat moss real good and a couple bags of composted cow manure goes a long way.
Just be aware when it comes to bagged manure you really need to read the bags, some aren't pure manure and again are already mixed with dirt.