There is no dump station at the Twentynine Palms Marine Corps Air/Ground Combat Center. The septic system is only for residents. However, they might allow you to dump in an empty slot if there is one available. It is better to ask for forgiveness rather than permission in this situation. Unfortunately, they do not have a procedure in place for nonresidents to dump. There is potable water and rinse water (non-potable) available. To get to the main gate, enter 29 Palms (the town) on Hwy. 62 and then turn North on Adobe Road. Continue on Adobe Road for about 5 miles until you reach the main gate.