Sec­tion 1.  Main­te­nance of Stan­dards.  Any and all eco­nom­ic ben­e­fits which the Employ­er is oblig­at­ed to pro­vide are con­tained in this Agree­ment.  Any such ben­e­fits which are not con­tained in this Agree­ment cease to exist upon exe­cu­tion of this Agree­ment, pro­vid­ed the Union has six (6) months from exe­cu­tion of this Agree­ment to raise any eco­nom­ic ben­e­fit inad­ver­tent­ly omit­ted from this Agree­ment which exist­ed pri­or to exe­cu­tion.  Should there exist any eco­nom­ic ben­e­fits inad­ver­tent­ly omit­ted, the par­ties agree to meet to nego­ti­ate with­in nine­ty (90) days of their exclu­sion from this Agree­ment.  All oth­er non-eco­nom­ic past prac­tices are extin­guished upon exe­cu­tion of this Agree­ment unless incor­po­rat­ed in this Agreement.