In February 2003, the ADEQ issued the first Arizona Pollutant Discharge Elimination System (AZDES) General Permit for Discharge from Construction Activities to Waters of the United States (Permit No. AZG2003-001); commonly referred to as the Construction General Permit (CGP). The CGP authorizes stormwater discharges from construction-related activities disturbing at least one (1) acre. The permit also covers construction support activities such as staging areas where clearing, grading, excavating and stockpiling of fill material. Permit waivers are also available from the ADEQ under very specific circumstances for sites less than five (5) acres in size. The CGP generally, like all AZPDES based permits, expires every five (5) years.
To read more, please click here.