To get to the RV dump station, take Exit 164 on I-15 and head towards Boulder. Once you reach Boulder, turn right at 2nd Street, which is near the hardware store. Continue driving for two miles until you reach the top of the hill. If you are coming from I-90, take Highway 69 North towards Boulder. Once you are in Boulder, turn left at 2nd Street, which is also near the hardware store. Drive for two miles until you reach the top of the hill.