BOONE, Iowa—The Boone County Board of Supervisors will give consideration to an amendment to a Joint Public Service Agreement between Boone and Polk Counties, Conservation Boards from Boone, Polk, Dallas and Story Counties and the Cities of Ankeny, Madrid, Sheldahl, Slater and Woodward.  The proposal would create a long term fund for future repairs on the High Trestle Trail.  All entities would contribute to the fund.  The Boone County Conservation Board was receptive to the proposal.  Conservation Director Andy Hockenson will discuss the proposal with the Supervisors.