Specifications 1890, 1892, 1895-1902, 1904-1908, 1912. 1898. Transformers, switching equipment and lightning arresters for Terrace Heights pumping plant and pumping plants in pump areas nos. 1, 2, 3, 4, 5, 6, 7, 8, 9, 9A, 10, 12, 14, 15, 16, and 17, Roza Division, Yakima project, Wash.