ArcGIS JavaScript GIS Buffer Tool. GCS developed the Montana Control Point Database (MCPD) application for the Montana Geodetic Control Working Group. The goals of the application are to provide Montana’s land surveyors with a means to store and manage their geodetic and mapping points that are not part of the National Geodetic Survey’s (NGS) database, and to provide the public with free access to reliable, up-to-date geodetic and mapping control.