At least one hundred fifty days prior to any village general election and subject to a permissive referendum, as provided by article nine of this title, the board of trustees of the following villages may adopt a resolution determining that such village shall have three village justices with the third village justice to be elected by the electors at the next village general election to begin serving a term of office beginning at the start of the official year next succeeding such village general election:
The village of Spring Valley in Rockland county.
N.Y. Village Law § 3-303