The Zoning Enabling Laws require that any of the following local zoning actions must be referred to the County Planning Board prior to action by the local board. Any proposal for a special permit, variance, site plan approval, change in the zoning law text or map (rezoning, amending the zoning law) which would affect real property lying within a distance of 500 feet from the boundary of any county; any town; any village; the boundary of any existing or proposed county or state park or any other recreation area; any right-of-way of any existing or proposed county or state road or parkway; the existing or proposed right-of-way of any stream or drainage channel owned by the county or for which the county has established channel lines; any existing or proposed county or state-owned land on which a public building or institution is situated; or the boundary of a farm operation located in an agricultural district as defined by Agriculture and Markets Law Article 25-AA (except in the granting of area variances) must be referred to the County Planning Board, which shall have 30 days from date of county receipt to take action on the matter. By mutual agreement of the county and the municipality, such thirty-day period may be extended in special cases.