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  • Industrial Facilites

    A Multi-Sector General Permit (MSGP) is issued by the Arizona Department of Environmental Quality (ADEQ) for industrial activities with selected Standard Industrial Classifications (SIC) codes. These activities can contribute pollutants to surface waters. The methods of preventing pollutants from entering stormwater include the following:
    • Keeping pollutants out of the rain,
    • Maximizing the porous area & infiltrating runoff,
    • Collecting the flow on-site,
    • Maintaining riparian buffers,
    • Treating the water before it flows off the site, and
    • Obtaining an Industrial Wastewater Discharge permit for regulated wastes.
    Tank with secondary containment 
    The SIC codes are grouped into the following sectors:
    A. Timber Products
    B. Paper and Allied Products
    C. Chemicals and Allied Products
    D. Asphalt Paving, Roofing Materials, Lubricants
    E. Glass, Clay, Cement & Gypsum Products
    F. Primary Metals
    G. Metal Mining
    H. Coal Mines & Related Facilities
    I. Oil & Gas Extraction
    J. Non-metallic Mineral Mining & Dressing
    K. Hazardous Waste Treatment, Storage or Disposal Facilities
    L. Landfills, Land Application Sites, Open Dumps
    M. Automotive Salvage yards
    N. Scrap Recycling Facilities
    O. Steam Electric Generating Facilities
    P. Land Transportation and Warehousing
    Q. Water Transportation
    R. Ship and Boat Building and Repair Yards
    S. Air Transportation Facilities
    T. Treatment Works
    U. Food and Kindred Products
    V. Textile Mills, Apparel & Other Fabric Product
        Manufacturing; Leather Products
    W. Furniture and Fixtures
    X. Printing and Publishing
    Y. Rubber, Miscellaneous Plastic Products, &
        Misc. Industries
    Z. Leather Tanning and Finishing
    AA. Fabricated Metal Products
    AB. Transportation Equipment; Industrial
           Commercial Machinery
    AC. Electronic, Electrical , Photographic and
          Optical Goods
    AD. Stormwater Discharges Designated by the
            Director as Requiring Permits

    This permit is required by the Clean Water Act (CWA) and functions ”to restore and maintain the chemical, physical, and biological integrity of the Nation’s waters.” The waters include desert washes, intermittent streams, lakes, wetlands, and their tributaries.

    Obtaining an MSGP from ADEQ

    To obtain an MSGP from ADEQ, complete a Notice of Intent (NOI). Applicants need to identify their SIC code. Websites useful in determining a SIC Code include the following:

    While completing the application, ADEQ's 2010 MSGP   or EPA's MSGP may be useful references. Guidance for completing a site specific Stormwater Pollution Prevention Plan (SWPPP) is also available on EPA's website. Pima County MapGuide may be used to prepare the general map and the site map (Tips to use MapGuide). Application fees depend upon the size of the facility and range from $350 to $1,000.

    Facilities with industrial materials and activities protected by storm-resistant shelters may apply for an exlusion from stormwater permitting. Facilities obtaining a No Exposure Certification (NEC) are exempt from obtaining the permit and must re-apply every five years.

    Managing Your Facility for Clean Stormwater

    Keep a current SWPPP on-site during operation of the facility. The SWPPP should identify the stormwater team, a summary of potential pollutants, control measures to prevent discharges, records of inspections, maintenance actions, and corrective actions.  

    For industrial wastewater generated at a facility, an Industrial Wastewater Discharge Permit may be needed for releases to Pima County's Sanitary Sewer.

    Check the progress of your facility with the following methods:

    • Perform routine inspections each quarter and follow up on any condition requiring a corrective action,
    • Perform Comprehensive Facility inspections each year,
    • Perform Visual Assessments of stormwater, twice each rainy season, and
      • Summer: June - October
      • Winter: November - May
    • If required for your sector, collect stormwater samples and submit them to a licensed laboratory.
    If you collect stormwater samples, EPA's Monitoring and Sampling Guide (March 2009) provides instructions about collecting the samples as well as coordinating with a laboratory. To find a nearby licensed laboratory, call Arizona Department of Health Services at (602)364-0720. If a benchmark value is based on hardness be sure to tell the laboratory to include Hardness in the list of analytes for your stormwater sample(s).

    File an annual report by July 15th for the reporting period of June 1st through May 31st.

     

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    Department of Environmental Quality

    33 N. Stone Ave., Suite 700
    Tucson, AZ 85701

    Phone: (520) 724-7400
    Fax: (520) 838-7432


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