Crushed Gravel Products #304 Crushed Gravel ODOT Spec:, Type B | Size: 1 1/2″ – Fine Sand Use: Road Berming, Driveway Base, Road Base #2 Crushed Gravel ODOT Spec: Does Not Apply | Size: 1 1/2″ – 3″ Use: Oil Well pads, Driveway Construction (Best used in unstable areas) #1 Crushed Gravel ODOT Spec: [.]