This permit was issued as part of the Texas Pollution Discharge Elimination System (TPDES), for discharging storm water from construction sites to the surface waters of the state. Although the title of the permit only mentions construction, it also affects maintenance. It allows storm water discharges from state force contract maintenance work sites provided that specific guidelines are followed. Work that disturbs less than one acre is generally excluded from the regulatory requirements. Therefore, unless a work activity is excluded from construction general permit (CGP), it must comply with the CGP's requirements.