Yes, our 8,400, 18,000 and 21,000 open-top tanks are all equipped with side clean-out hatches that enable you to shovel or vacuum out the remaining sediment left after a tank is drained. In fact, these tanks all have at least three manways on them, one in the front at chest level, one on the passenger side at floor level and one on the top to view the product. The open-top tank has three side hatches.