Grant Co. P.U.D., Ephrata, WA No description specified. 1-2 (2 Records) Documents Cultural Resource Survey of the Proposed Sand Dunes-Pec-Seep Lake Transmission Line, Grant County, Ephrata, Washington (1987) Testing and Evaluation of 45-Do-2 in the Vicinity of Proposed Riprapping Construction at Columbia River Siding (1987)