Yes, the ledger is supporting the floor load of a residence and the anchor bolts would be at 48" O.C. each supporting a maximum shear load (D+L) of 1,320 pounds.
We have a ledger detail with anchor bolt concrete connection. In determination of minimum edge distance for a cast-in anchor bolt, ACI 318-08 has a paragraph (page 34-15) stating that cast-in headed anchors that are not torqued can have a minimum edge distance equal to the minimum concrete...
