I don't like this, but I don't want to add too much business logic to a stored procedure either. How can this be improved?

gistfile1.cs

var context = new DbContext();

foreach(var itemId in itemIds) // on average about 10 items
{
    var item = new Item();
    item.ForeignKey = itemId;
    item.SomeProperty = someValue;

    foreach(var subItemId in subItemsIds) // on average about 20 subitems
    {
        var subItem = new SubItem();
        subItem.ForeignKey = subItemId;
        subItem.SomeProperty = someValue;

        foreach(var date in dates) // on average about 30 dates
        {
            var subSubItem = new SubSubItem();
            subSubItem.Date = date;
            subSubItem.SomePropery = someValue;

            subItem.SubSubItems.Add(subSubItem);
        }

        item.SubItems.Add(subItem);
    }

    context.Items.Add(item);
}

context.SaveChanges(); // about 6.100 inserts