Multi-Sector General Permit

Stormwater permit coverage requirements have been established by the Environmental Protection Agency (EPA) and the Texas Commission on Environmental Quality (TCEQ) in order to regulate stormwater runoff from industrial facilities.

The current Texas Pollution Discharge Elimination System's (TPDES) Multi-Sector permit-TXR050000 was reissued on August 14, 2011 by TCEQ. It is in the process of renewing this permit which expires August 14, 2016. This general permit covers 30 industrial sectors which have a high potential to contaminate surface waters in the State of Texas.

  • Sector A: Timber Products
  • Sector B: Paper and Allied Products
  • Sector C: Chemical and Allied Products
  • Sector D: Asphalt Paving and Roofing Materials and Lubricants
  • Sector E: Glass, Clay, Cement, Concrete, and Gypsum Products
  • Sector Fax: Primary Metals
  • Sector G: Metal Mining (Ore Mining and Dressing)
  • Sector H: Coal Mines and Coal Mining Related Facilities
  • Sector I: Oil and Gas Extraction Facilities
  • Sector J: Mineral Mining and Processing Facilities
  • Sector K: Hazardous Waste Treatment, Storage, and Disposal Facilities
  • Sector L: Landfills and Land Application Sites
  • Sector M: Automobile Salvage Yards
  • Sector N: Scrap and Waste Recycling Facilities
  • Sector O: Steam Electric Generating Facilities
  • Sector Phone: Land Transportation and Warehousing
  • Sector Q: Water Transportation
  • Sector R: Ship and Boat Building or Repairing Yards
  • Sector S: Air Transportation
  • Sector Phone: Treatment Works
  • Sector U: Food and Kindred Products Facilities
  • Sector V: Textile Mills, Apparel, and other Fabric Product Manufacturing Facilities
  • Sector W: Furniture and Fixtures
  • Sector X: Printing and Publishing
  • Sector Y: Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Facilities
  • Sector Z: Leather Tanning and Finishing
  • Sector AA: Fabricated Metal Facilities
  • Sector AB: Transportation Equipment, Industrial or Commercial Machinery Manufacturing Facilities
  • Sector AC: Electronic, Electrical, Photographic and Optical Goods
  • Sector AD: Miscellaneous Industrial Activities

Resources & Additional Information

  • Check the status of your permit online
  • Permit requirements are based on either the facilities Standard Industrial Classification ( SIC) code or it's North American Industrial Classification System (NAICS) code. If your industrial activity is described by one of the required SIC codes, you MUST have permit coverage.
  • SIC Codes
  • NAICS Conversion Table (PDF)
  • If you are unsure of your industry code you can go to the Department of Labor: OSHA website. Use their look up tool to find your applicable SIC code.
  • TPDES Multi-Sector permit-TXR050000
  • TPDES Multi-Sector General Permit Application
  • If all industrial activities and materials are performed and contained inside a building or under a storm-resistant shelter, and are isolated from rain, snow, snowmelt and runoff, you may be eligible for a conditional No Exposure Exclusion from permit requirements.
  • TPDES-Conditional-No-Exposure-Certification-Application
  • TPDES Conditional No Exposure Certification Guide