| RV Dump Sites in Kittitas County Ellensburg Waster Water Treatment Plant Canyon Road, Ellensburg 7am - 3:30 pm 7 days a week Free of charge Days Inn/EJ Resort Berry Road, Ellensburg (Exit 109 I-90 Interchange) 7 days a week Fee charged Indian John Hill Rest Area I-90 between Ellensburg and Cle Elum 24 hours/7 days a week Free of charge Vantage Mobile Home Park I-90 at Vantage 7 days a week Fee charged |