In November 1895 Fr. Vretta was transferred to Seattle, where he oversaw the founding of St. Spiridon Church and became that parish's first resident priest. He succeeded Fr. [[Sebastian Dabovich]], who had been conducting services in Seattle on Saturdays before Fr. Vretta's arrival. In 1896, Fr. Vretta visited Montana, where he celebrated the first Orthodox services in that state.
Vretta was transferred
out of St. Spiridon in December 1896. He returned to Russia, and died soon thereafter.