Insurance Pooling Unit Option. The District shall provide the Union with a copy of the pooling calculations on or about November 1 of each fiscal year. The Union may elect to withdraw from the District-wide insurance pool and to establish a separate PSE insurance pool to take effect with the following January 31 payroll, by delivering written notice of such election to the Superintendent on or before December 1 of the applicable fiscal year. In the event the Union exercises this option, then a separate PSE pool shall continue in force unless changed through future negotiations.