ADEQ's Multi-Sector General Permit for Industry
ADEQ's multi-sector general permit (MSGP) is designed for discharges of storm water from certain industrial sites that are of a non-construction nature. The MSGP is one large permit divided into numerous separate sectors. Each sector represents a different type of activity and is dependent on its standard industrial classification (SIC) code or narrative description. Information on Facilities required to apply for a storm water permit and SIC codes can be found in 40 CDF 122.25(b)(14). The Environment Protection Agency (EPA) and the Arizona Department of Environmental Quality (ADEQ) provide further information on the MSGP.
ADEQ's General Permit for Construction
The construction general permit authorizes storm water discharges from large and small construction-related activities that result in a total land disturbance of equal to or greater than 1 acre (including smaller parcels that are part of a larger common plan of development or sale that are equal or greater than 1 acre) where those discharges enter surface waters of the U.S. or a storm drain.
Under the Arizona Pollutant Discharge Elimination System (AZPDES), the operator of a construction site is responsible for obtaining coverage for their site. Information can be found on ADEQ's website, including a Notice of Intent (NOI).
**Important: A copy of the NOI and SWPPP must be submitted to the Town of Gilbert.**