Blueprints and specifications submitted by building contractors or government agencies applying for a permit to construct government buildings. Used for enforcement of building codes and reference for later modifications. Includes specifications of type, grade, and brand of materials used as well as details related to temporary facilities, job cleanup, deadlines, and other conditions. May also include change orders or plan modifications submitted after permit approved. Minimum retention: (a) If permit issued and structure completed: For the life of the structure