Filling holes around foundation

Robin,
Contact your local building code department for the town in which you live. Every area is different so nobody here can give you the correct answer.

Reading over the problem again, I would fill the area with dirt with a 1 inch per foot slope away from your foundation a minimum of 6 feet. Sand will allow the water to penetrate down along your foundation walls, which is what you are trying to avoid. I apologize for the first answer.....