Contents

Does my facility need an industrial stormwater permit?

This image shows a flowchart to decide if facility needs an ISW permit
Flowchart used to decide if facility needs an Industrial Stormwater permit

Introduction

This fact sheet addresses how to determine a facility’s primary Standard Industrial Classification code (SIC code) or narrative activity and related common questions.

The questions and answers in this fact sheet are based on Minnesota’s Questions and Answers, developed with the U.S. Environmental Protection Agency (EPA) to clarify EPA document “National Pollutant Discharge Elimination System (NPDES) Storm Water Program Questions and Answers, Vol. 1 and Vol. 2.”

Q1 How do I know if my facility needs an industrial stormwater permit?

The MPCA’s industrial stormwater permit lists the industries that need a permit. They are listed by SIC code or are explained in a narrative in Appendix D (page 148) of the permit. Listed industries must get a permit or certify that nothing is exposed to stormwater.

For convenience, the regulated primary SIC codes and descriptions of narrative activities are reprinted at the end of this fact sheet starting on page 10.

Q2 What is a SIC code?

SIC codes are a way of classifying industries by 4-digit codes. It is a descriptor of the kind of work being done at a facility, not a number specifically assigned to the facility like a tax ID. Facilities can have several SIC codes but only one Primary SIC code.

The IRS uses SIC codes, so your tax paperwork or accountant may already have the facility’s SIC code. Look on these federal tax forms:

  • Schedule C or C-EZ for Sole Proprietors
  • Form 1065 for Partners
  • Form 1120 for C Corporations
  • Form 1120-S for S Corporations

A searchable database of the SIC Codes is available here

Example: A company manufactures metal washers and hinges. Searching for the word “washers” on the linked OSHA website returns a few options. One of them – SIC 3452: Bolts, Nuts, Screws, Rivets and Washers – covers the washers, but not the hinges. Searching for “hinges” returns SIC 3429: Hardware Not Elsewhere Classified. Although hinges aren’t mentioned in the title for SIC 3429, they are specifically listed in the description. Be sure to read the descriptions because they frequently offer the SIC codes for related activities.

Q3 What is a Primary SIC code?

If a facility has more than one SIC code, the activity that generates the greatest revenue is the Primary SIC code. If revenue information is unavailable, use the SIC code for the activity with the most employees. If employee information is also unavailable, use the SIC code for the activity with the greatest production.

Q4 Does a facility need more than one stormwater permit if it has more than one SIC code?

No, only one permit or No Exposure certification is required; it will address all the operations at the facility.

Q5 My facility’s Primary SIC code isn’t listed. Do I need a permit?

If the facility fits one of the listed narrative activities, a permit or No Exposure certification is required regardless of whether or not the facility’s Primary SIC code is listed. But if the facility isn’t described by a listed narrative activity and its Primary SIC code isn’t listed, a permit isn’t required even if a Secondary SIC code is listed. See Table 1.

Q6 Do I have to consider my other SIC codes if I get the permit?

Yes, when the facility applies for the permit, list the Secondary SIC codes in the application. Comply with the sector requirements for the all the SIC codes at the facility and any narrative activities.

Q7 What are “narrative activities”?

Certain industries are easier to define by explaining what they do in a narrative paragraph. They are listed as narrative activities. If a facility fits any of the listed narrative activities, whether for Primary or Secondary operations, it must get an industrial stormwater permit or the No Exposure exclusion.

Summary of when a permit it required based on SIC codes and narrative activity
Link to this table
Is the facility’s industry type listed? What to do
Primary SIC code Secondary SIC code Narrative activity
Scenario 1 Listed Listed or not Listed or not Apply for permit or certify No Exposure
Scenario 2 Not listed Listed Not listed No stormwater permit required
Scenario 3 Listed or not Listed or not Listed Apply for permit or certify No Exposure

Q8 What can my facility store outside and still qualify for No Exposure?

There are a few things a facility can have outside and still qualify for the No Exposure exclusion:

  • properly maintained vehicles, such as forklifts, industrial vehicles or delivery trucks
  • dumpsters that are in good condition, covered and not allowed to drain
  • materials that do not contaminate stormwater, such as products that are designed to be used outside, pallets in good condition or used tires
  • office buildings, employee parking lots and employees’ personal vehicles
  • Containers and tanks that are sealed and free from deterioration. They cannot have any taps or valves, because those could result in drips or leaks.

More information is in the MPCA stormwater factsheet #wq-strm3-13, “No Exposure: Qualifying for and maintaining the exclusion.”

Q9 What is a storm-resistant shelter?

A storm-resistant shelter can be:

  • a completely roofed and walled building
  • a structure with only a top cover but no side walls, as long as stormwater cannot flow through the structure and rain or snow that are blown in by the wind are prevented from running out, such as by a curb or berm

Q10 What if my facility has a different water permit?

Wastewater discharge permit

If a facility has a wastewater discharge permit that already includes stormwater requirements, a separate industrial stormwater permit is not required.

See Question 19 for wastewater treatment facility information.

Sand and gravel, stone, concrete and hot mix asphalt

Certain sand and gravel, stone, concrete and hot mix asphalt facilities qualify for the nonmetallic mining water permit. The MNG49 permit includes industrial stormwater requirements and has the advantage of covering multiple locations and portable plants under one permit. If a facility has MNG49 and all industrial activities at the facility are addressed in the permit, the facility does not need the industrial stormwater permit.

However, if a facility has MNG49 and there are industrial activities with a listed SIC code or narrative activity that are not addressed in MNG49 (such as local trucking or a landfill), the facility must add an industrial stormwater permit for the location or part of the location that has these additional activities.

For more information or to find out if a facility qualifies for MNG49, see the MPCA’s Nonmetallic Mining and Associated Activities water permit web page at http://www.pca.state.mn.us/iryp90f. Be careful not to confuse it with the air quality permit that has a similar name.

Q11 Do auxiliary operations need a permit?

On-site: On-site auxiliary operations, such as warehouses or vehicle maintenance shops, are considered Secondary SIC code activities. As discussed above in the section about SIC codes, a facility only needs a permit if the Primary SIC code or narrative activity is listed. If it is listed, get the permit and comply with the sector requirements for primary activities, auxiliary/secondary activities and any narrative activities, or certify for No Exposure.

Off-site: For off-site auxiliary operations, first determine whether industrial activities at the off-site facility have a listed Primary SIC code or narrative activity: · If so, an industrial stormwater permit or No Exposure exclusion is required for the off-site facility. · If the off-site facility does not have a listed Primary SIC code or narrative activity, the off-site facility takes on the SIC code or narrative activity of the facility it supports. If industrial activities at the main facility have a listed Primary SIC code or narrative activity, separate industrial stormwater permits or No Exposure exclusions are required for the off-site facility and the main facility. · If neither facility has a listed Primary SIC code or narrative activity, neither facility needs a permit or No exposure certification.

Research and development

Pilot plants and research and development (R&D) facilities follow a similar decision process as other auxiliary operations:

  • If a pilot plant or research R&D facility is described by a listed Primary SIC code, it must get an industrial stormwater permit or No Exposure exclusion.
  • If an on-site pilot plant or R&D facility is located at a facility that is required to have a permit, so does the pilot plant or R&D facility.
  • If an off-site pilot plant or R&D facility doesn’t have a listed Primary SIC code or narrative activity, it takes on the SIC code or narrative activity of the facility it supports. If the main facility is required to have a permit, so does the pilot plant or R&D facility. The pilot plant or R&D facility must have its own permit and follow the sector requirements of the facility it supports, or certify for No Exposure.
  • If the R&D facility isn’t listed and the main facility isn’t listed, neither location needs an industrial stormwater permit or No Exposure certification.

Facilities primarily engaged in commercial physical and biological R&D on a contract or fee business are described by the Primary SIC code 8731. These facilities are not required to have an industrial stormwater permit or No Exposure certification.

Warehouses

Warehousing businesses that fit into one of the listed warehousing SIC codes (SIC 422x) must have a permit or certify for No Exposure. Warehouses located on-site at a facility that has a listed primary SIC code or narrative activity are included in that facility’s permit. Follow the sector requirements in the permit for Sector P – Land Transportation and Warehousing for the warehouses. Off-site warehouses of preassembly parts or finished products are not required to have a permit unless they are specifically a warehouse business described by a warehouse SIC code (SIC 422x).

Q12 How is vehicle maintenance regulated?

Vehicle maintenance facilities follow a similar decision process as auxiliary operations unless they are associated with transportation facilities, which is discussed in more detail in the next section.

Independently-operated vehicle maintenance shops are usually described by Primary SIC codes 75xx or 7699. Neither of those SIC codes are listed, so facilities that fit those descriptions do not need an industrial stormwater permit or No Exposure certification.

For vehicle maintenance shops that provide support to a non-transportation facility:

  • An on-site vehicle maintenance shop supporting a facility that has an industrial stormwater permit is covered by the main facility’s permit.
  • An off-site vehicle maintenance shop supporting a facility that requires an industrial stormwater permit takes on the SIC code and sector requirements of the main facility. Both facilities require permits or No Exposure certification.
  • An off-site vehicle maintenance shop supporting a facility that is not required to have a permit does not need a permit or No Exposure certification.

Minnesota considers water from truck washing operations to be wastewater, not stormwater. Washwater cannot be discharged with stormwater.

Vehicle maintenance for transportation facilities

More information is in MPCA stormwater fact sheet #wq-strm3-32, “Guidance on the Industrial Stormwater Permit for Transportation Sectors.”

No Exposure

The No Exposure certification will be difficult to qualify for and maintain at a transportation facility, even if all vehicle maintenance and equipment cleaning is done indoors. Vehicle fueling is a common source of pollutants. Vehicles waiting for maintenance at transportation facilities are unlikely to be in good condition, resulting in potential exposure of pollutants to stormwater. Outdoor storage of materials used in vehicle maintenance or equipment cleaning are common and can contribute pollutants to stormwater. Particulate matter or residuals from roof stacks or vents that are not otherwise regulated (such as by an air quality permit) and are evident in stormwater are also considered a violation of No Exposure.

On-site activities

Vehicle maintenance shops, equipment cleaning facilities and airport de-icing operations located at a facility in one of the transportation categories (Sectors P, Q, R and S) are regulated by the industrial stormwater permit. However, the permit requirements apply only to the areas where vehicle maintenance, equipment cleaning or airport de-icing are being done. If a transportation facility is not doing vehicle maintenance, equipment cleaning or airport deicing, the facility does not need an industrial stormwater permit or No Exposure certification.

Follow Sector P requirements of the permit for local or long distance trucking maintenance or fueling located at a facility with a listed Primary SIC code.

Exception: Facilities with Primary SIC codes 4221-4225 (warehousing) must have an industrial stormwater permit or certify for No Exposure regardless of whether vehicle maintenance shops, equipment cleaning facilities and airport de-icing operations are present.


Off-site activities

EPA has determined that most off-site vehicle maintenance facilities are supporting establishments that take on the SIC code of the facility they support. This means facilities that provide local trucking maintenance, fueling or washing take on the SIC code of the facility they support. If the main facility is required to have a permit, so does the off-site facility. The off-site facility takes on the sector requirements of the main facility.

Exception: Industrial stormwater permits or No Exposure exclusions are always required for vehicle maintenance associated long distance trucking, stevedoring (4491) and water transportation (44xx). As noted above, qualifying for the No Exposure certification will be difficult.

School bus maintenance facilities

The SIC code description for school bus transportation (SIC code 4151) excludes operations that are owned or run by a school district; these are instead covered under SIC code 8211, which is not a listed SIC code. This means school bus maintenance facilities that are owned or operated by a municipality or school district are not required to have an industrial stormwater permit or No Exposure certification.

However, private-contract school bus services (SIC code 4151) must have an industrial stormwater permit or certify for No Exposure. As noted above, qualifying for the No Exposure certification will be difficult.

Q13 Are tank farms regulated?

Tank farms need an industrial stormwater permit if stormwater from the tank farm mixes with stormwater from a vehicle maintenance shop or equipment cleaning operation. Tank farms at petroleum bulk storage stations (SIC code 5171) that don’t have vehicle maintenance or equipment cleaning operations are exempted and do not need an industrial stormwater permit.

If the tank farm is located at a facility that has a listed Primary SIC code, the tank farm is considered a secondary activity and is included in the main facility’s permit.

More information is in MPCA stormwater fact sheet #wq-strm3-32, “Guidance on the Industrial Stormwater Permit for Transportation Sectors.”

Q14 Are grain elevators regulated?

Facilities that only warehouse or store farm products are described by Primary SIC code 4221 and must have an industrial stormwater permit or certify No Exposure.

Grain elevators described by Primary SIC code 5153 do not need an industrial stormwater permit or No Exposure certification. They include elevators buying or marketing grain or beans, country grain elevators buying or receiving grain or beans from farmers and terminal elevators and other merchants marketing grain or beans.

Q15 Are wood mulch or animal bedding manufacturers regulated?

Wood mulch or animal bedding manufacturing are described by one of three listed SIC codes:

  • SIC 2421 – General Sawmills and Planing Mills
  • SIC 2429 – Special Product Sawmills Not Elsewhere Classified
  • SIC 2499 –Wood Products Not Elsewhere Classified

Facilities with any of these Primary SIC codes are regulated by the industrial stormwater permit.

Q16 Are military facilities regulated?

The overarching SIC code 9711 (national security) does not apply to industrial activities at a military facility. Each industrial activity on a military base or state reserve facility such as National Guard is considered to be a stand-alone industrial activity. EPA requires a separate permit or No Exposure exclusion for each listed industrial activity. This is unique to federal military facilities.

Section 313A of the Clean Water Act states that federal facilities "shall be subject to, and comply with, all federal, state, interstate, and local requirements... respecting the control and abatement of water pollution in the same manner, and to the same extent as any nongovernmental entity including the payment of reasonable service charges."

Q17 Are municipal or government facilities (non-military) regulated?

State and local municipal facilities follow the same decision-making process as any industrial facility. Start by determining the Primary SIC code and then evaluate on-site secondary and off-site auxiliary activities.

Publicly-owned government facilities usually are described by Primary SIC code 9199 – General Government, because the greatest revenue source and number of employees are from government administration. SIC code 9199 is not a listed SIC code so an industrial stormwater permit or No Exposure certification is not required. Common industrial activities such as police cars, fire trucks and snow plows are covered by SIC codes 9221, 9224 and 9229; dump trucks and heavy equipment used for construction are covered by SIC codes 1611-1629. None of these activities have listed SIC codes or narrative activities so an industrial stormwater permit or No Exposure certification is not required. This also means that secondary activities at these facilities, such as a Sector N recycling center or a warehouse, do not trigger the need for a permit or No Exposure certification. Off-site vehicle maintenance facilities supporting these SIC codes do not need the permit or No Exposure certification.

A vehicle maintenance facility located on-site at a municipal waste water treatment plant or landfill, which are listed narrative activities and require an industrial stormwater permit, is covered by the main facility’s permit.

A separately located recycling center needs an industrial stormwater permit or No Exposure certification; it is not considered to be auxiliary.

Question 20 lists municipal solid waste activities that do not need an industrial stormwater permit or No Exposure certification.

Q18 Are colleges and universities regulated?

Schools follow the same decision-making process as any industrial facility. Start by determining the primary SIC code and then evaluate on-site secondary and off-site auxiliary activities.

Schools without narrative activities

Public or private universities described by primary SIC code 8221 (Colleges, Universities and Professional Schools) that do not have on-site narrative activities are not required to have an industrial stormwater permit or No Exposure certification. On-site secondary activities with listed SIC codes do not trigger the need for a permit or No Exposure certification. Off-site auxiliary activities such as warehouses or vehicle maintenance shops are not required to have a permit or No Exposure certification.

Schools with narrative activities

Public or private university campuses with a narrative activity are required to have an industrial stormwater permit and follow the requirements for the narrative activity’s sector. All industrial activities at the main campus are covered by the permit, including warehouses, vehicle and equipment maintenance facilities, printing presses and recycling centers. Off-site industrial activities supporting the main campus take on the narrative activity and are required to have the permit or No Exposure certification. The main campus and the supporting facility each need their own permit or No Exposure certification. Both follow the requirements of the narrative activity’s sector. A separately located warehouse does not need the permit or No Exposure certification (see section on warehouses for more information).


Schools with off-site listed or narrative activities

An off-site, university-run facility described by a listed Primary SIC code must have an industrial stormwater permit or No Exposure certification. Common examples are off-site, university-run printing presses or recycling centers. They are described by listed Primary SIC codes 27xx and 5093, respectively, and therefore must get a permit or No Exposure certification. The main campus does not need an industrial stormwater permit or No Exposure certification.

An off-site, university-run facility described by a narrative activity must have an industrial stormwater permit or No Exposure certification. If auxiliary activities are conducted at the off-site facility, all of these activities are covered by the permit. The main campus is not required to apply for an industrial stormwater permit or No Exposure certification.

Q19 Are wastewater treatment facilities regulated?

Most wastewater treatment plants are described by the Sector T narrative activity and therefore must have an industrial stormwater permit.

Vehicle or equipment maintenance associated with a wastewater treatment facility (for example, to haul sewage sludge or to move equipment from the maintenance facility to the treatment plant), whether on-site or off-site, takes on the classification of the main facility and is required to have an industrial stormwater permit if the facility does. If the maintenance facility serves multiple wastewater treatment authorities, it is required to have an industrial stormwater permit.

Wastewater treatment facilities that collect their stormwater runoff and treat the stormwater as part of the normal inflow processed through the treatment plant are not required to have an industrial stormwater permit or No Exposure certification. Stormwater mixed with wastewater becomes wastewater and is addressed by the NPDES wastewater permit for the facility.

Off-site areas where sludge (biosolid) is beneficially reused do not need an industrial stormwater permit or No Exposure certification. For the purposes of the industrial stormwater permit, beneficial reuse of sludge is the application of sludge as a nutrient builder or soil conditioner. It can include agricultural or domestic application.

Off-site pumping stations do not need an industrial stormwater permit or No Exposure certification.

Q20 Which solid waste facilities are exempted?

An industrial stormwater permit or No Exposure certification is not required for solid waste facilities that are exempted from solid waste permitting, or, are granted a solid waste permit without applying for it by Minn. R. 7001.3050, subp.2 and subp.3. This includes the following:

  1. Backyard compost sites.
  2. Yard waste compost facilities that are in compliance with Minn. R. 7035.2836, subp. 2 and 3.
  3. Temporary community cleanup events such as household hazardous waste collection events, provided:
    1. the event is sponsored or approved by the municipality
    2. the event is open to residents of the community
    3. the event occurs no more than twice a year
    4. the event, including removal of the wastes, lasts no more than seven days
  4. Solid waste transfer facilities that accept waste directly from individual residents who self-haul, provided:
    1. the county where the facility is located has determined the facility is necessary due to limited availability of solid waste collection services
    2. no more than 40 cubic yards of waste are stored on site at any given time
    3. no more than 40 cubic yards of waste are managed on site per day
    4. All waste is managed and stored in containers or roll-off boxes constructed of impervious material; and,
    5. removal of waste occurs when the capacity of the container is reached or more often as necessary to prevent nuisance conditions
  5. Transfer facilities that move from location to location and receive solid waste directly from other vehicles for consolidation, provided they are not located in an area for more than 12 hours, all waste is delivered vehicle to vehicle and is not dumped and reloaded.
  6. Transfer facilities where all waste is managed and stored in containers or roll-off boxes constructed of impervious material or in a fully enclosed building that meet the standards in Minn. R. 7035.2870, subp. 3 or subp. 4, provided that in either case the facility is in compliance with the requirements of Minn. R. 7001.3050, subp.3, item A.
  7. Beneficial use of solid waste and storage of a solid waste prior to its beneficial use done according to Minn. R. 7035.2855 and 7035.2860.
  8. Demonstration or research projects authorized by Minn. R. 7035.0450.
  9. Disposal of solid waste on the same property where it was discovered if review, investigation and oversight is conducted under Minn. Stat. § 115B.17, subd. 14 and response actions are conducted in accordance with a plan approved under Minn. Stat. § 115B.175.
  10. Demolition debris land disposal facilities that are designed for less than 15,000 cubic yards total capacity, operate less than a total of 12 consecutive months, are not located adjacent to another demolition debris permit-by-rule facility and are in compliance with Minn. R. 7035.2525 to 7035.2655, 7035.2825 and 7035.2855.

Q21 Are facilities with effluent limits or performance standards regulated?

The following facilities are required to have an industrial stormwater permit or certify for No Exposure:

  • facilities with air emission new source performance standards
  • facilities with wastewater toxic pollutant effluent standards
  • facilities with stormwater effluent limits

Standard Industrial Classification (SIC) codes and narrative activities list

SIC codes

Sector A: Timber products

  • 2411 Logging
  • 2421 Sawmills and planning mills-general
  • 2426 Hardwood dimension and flooring mills
  • 2429 Special products sawmills, NEC
  • 2431 Millwork
  • 2435 Hardwood veneer and plywood
  • 2436 Softwood veneer and plywood
  • 2439 Structural wood members, NEC
  • 2441 Nailed and lock corner wood boxes and shook
  • 2448 Wood pallets and skids
  • 2449 Wood containers, NEC
  • 2451 Mobile homes
  • 2452 Prefabricated wood buildings and components
  • 2491 Wood preserving
  • 2493 Reconstituted wood products
  • 2499 Wood products, NEC

Sector B: Paper and allied products manufacturing

  • 2611 Pulp mills
  • 2621 Paper mills
  • 2631 Paperboard mills
  • 2652 Setup paperboard boxes
  • 2653 Corrugated and solid fiber boxes
  • 2655 Fiber cans, tubes, drums, and similar products
  • 2656 Sanitary food containers (except folding)
  • 2657 Folding paperboard boxes, including sanitary
  • 2671 Packaging paper and plastics film (coated and laminated)
  • 2672 Coated and laminated paper, NEC
  • 2673 Plastics, foil and coated paper bags
  • 2674 Uncoated paper and multiwall bags
  • 2675 Die-cut paper, paperboard, and cardboard
  • 2676 Sanitary paper products
  • 2677 Envelopes
  • 2678 Stationary, tablets, and related products
  • 2679 Converted paper and paperboard products, NEC

Sector C: Chemical and allied products manufacturing

  • 2812 Alkalies and chlorine
  • 2813 Industrial gases
  • 2816 Inorganic pigments
  • 2819 Industrial inorganic pigments, NEC
  • 2821 Plastic materials, synthetic resins and elastomers
  • 2822 Synthetic rubber (vulcanizable elastomers)
  • 2823 Cellulosic manmade fibers
  • 2824 Manmade organic fibers, except cellulosic
  • 2833 Medicinal chemicals and botanical products
  • 2834 Pharmaceutical preparations
  • 2835 In vitro and in vivo diagnostic substances
  • 2836 Biological products (except diagnostic substances)
  • 2841 Soap and other detergents, except specialty cleaning
  • 2842 Specialty cleaning, polishing and sanitation preparations
  • 2843 Surface active agents, finishing agents and sulfonated oils
  • 2844 Perfumes, cosmetics and other toilet preparations
  • 2851 Paints, varnishes, lacquers, enamels and allied products
  • 2861 Gum and wood chemicals
  • 2865 Cyclic organic crudes and intermediates and organic dyes
  • 2869 Industrial organic chemicals, NEC
  • 2873 Nitrogenous fertilizers
  • 2874 Phosphatic fertilizers
  • 2875 Fertilizers, mixing only
  • 2879 Pesticides and agricultural chemicals, NEC
  • 2891 Adhesives and sealants
  • 2892 Explosives
  • 2893 Printing ink
  • 2895 Carbon black
  • 2899 Chemicals and chemical preparations, NEC
  • 3952 Lead pencils, crayons and artists’ materials

Sector D: Asphalt paving and roofing materials and lubricant manufacturing

  • 2951 Asphalt paving mixtures and blocks
  • 2952 Asphalt felts and coatings
  • 2992 Lubricating oils and greases
  • 2999 Petroleum and coal products, NEC

Sector E: Glass, clay, cement, concrete, and gypsum products

  • 3211 Flat glass
  • 3221 Glass containers
  • 3229 Pressed and blown glass and glassware
  • 3231 Glass products, made of purchased glass
  • 3241 Hydraulic cement
  • 3251 Brick and structural clay tile
  • 3253 Ceramic wall and floor tile
  • 3255 Clay refractories
  • 3259 Structural clay products, NEC
  • 3261 Vitreous china plumbing fixtures and bathroom fittings
  • 3262 Vitreous china table and kitchen articles
  • 3263 Fine earthenware (whiteware) table and kitchen articles
  • 3264 Porcelain electrical supplies
  • 3269 Pottery products, NEC
  • 3271 Concrete block and brick
  • 3272 Concrete products, except block and brick
  • 3273 Ready-mixed concrete
  • 3274 Lime
  • 3275 Gypsum products
  • 3281 Cut stone and stone products
  • 3291 Abrasive products
  • 3295 Ground or otherwise treated minerals and earths
  • 3296 Mineral wool
  • 3297 Nonclay refractories
  • 3299 Nonmetallic mineral products, NEC

Sector F: Primary metals

  • 3312 Steel works, blast furnaces (including coke ovens) and rolling mills
  • 3313 Electrometallurgical products, except steel
  • 3315 Steel wiredrawing, nails, and spikes
  • 3316 Cold-rolled steel sheet, strip and bars
  • 3317 Steel pipe and tubes
  • 3321 Gray and ductile iron foundries
  • 3322 Malleable iron foundries
  • 3324 Steel investment foundries
  • 3325 Steel foundries, NEC
  • 3331 Primary copper smelting and refining
  • 3334 Primary aluminum production
  • 3339 Primary nonferrous metals smelting and refining, NEC
  • 3341 Secondary nonferrous metals smelting and refining
  • 3351 Copper rolling, drawing and extruding
  • 3353 Aluminum sheet, plate and foil
  • 3354 Aluminum extruded products
  • 3355 Aluminum rolling and drawing, NEC
  • 3356 Nonferrous metals rolling, drawing, and extruding, NEC
  • 3357 Nonferrous wire drawing and insulating
  • 3363 Aluminum die-castings
  • 3364 Nonferrous die-castings, except aluminum
  • 3365 Aluminum foundries
  • 3366 Copper foundries
  • 3369 Nonferrous foundries, except aluminum and copper
  • 3398 Metal heat treating
  • 3399 Primary metal products, NEC

Sector G: Metal mining (ore mining and dressing)

  • 1011 Iron ores
  • 1021 Copper ores
  • 1031 Lead and zinc ores
  • 1041 Gold ores
  • 1044 Silver ores
  • 1061 Ferroalloy ores (except vanadium)
  • 1081 Metal mining services
  • 1094 Uranium-radium-vanadium ores
  • 1099 Miscellaneous metal ores, not elsewhere classified, NEC

Sector H: Coal mines and coal mining-related facilities

  • 1221 Bituminous coal and lignite surface mining
  • 1222 Bituminous coal underground mining
  • 1231 Anthracite mining
  • 1241 Coal mining services

Sector I: Oil and gas extraction and refining

  • 1311 Crude petroleum and natural gas
  • 1321 Natural gas liquids
  • 1381 Oil and gas well drilling
  • 1382 Oil and gas field exploration services
  • 1389 Oil and gas field services, NEC
  • 2911 Petroleum refining

Sector J: Mineral mining and dressing

  • 1411 Dimension stone
  • 1422 Crushed and broken limestone
  • 1423 Crushed and broken granite
  • 1429 Crushed and broken stone, NEC
  • 1442 Construction sand and gravel
  • 1446 Industrial sand
  • 1455 Kaolin and ball clay
  • 1459 Clay, ceramic and refractory minerals, NEC
  • 1474 Potash, soda and borate minerals
  • 1475 Phosphate rock
  • 1479 Chemical and fertilizer minerals mining, NEC
  • 1481 Nonmetallic minerals services
  • 1499 Miscellaneous nonmetallic minerals, except fuels

Sector K: Hazardous waste treatment, storage, or disposal facilities - See Narrative Activities list

Sector L: Landfills and land application sites - See Narrative Activities list

Sector M: Automobile salvage yards=

  • 5015 Used motor vehicle parts

Sector N: Scrap recycling and waste recycling facilities

  • 5093 Scrap and waste materials

Sector O: Steam electric generating facilities – See Narrative Activities list

Sector P: Land transportation and warehousing

  • 4011 Line-haul railroad operation
  • 4013 Railroad switching and terminal establishments
  • 4111 Local and suburban transit
  • 4119 Local passenger transportation, NEC
  • 4121 Taxicab service
  • 4131 Intercity and rural bus transportation
  • 4141 Local bus charter service
  • 4142 Bus charter service, except local
  • 4151 School bus operation
  • 4173 Terminal and service facilities for passenger transportation
  • 4212 Local trucking without storage
  • 4213 Trucking, except local
  • 4214 Local trucking with storage
  • 4215 Courier service, except by air
  • 4221 Farm product warehousing and storage
  • 4222 Refrigerated warehousing and storage
  • 4225 General warehousing and storage
  • 4226 Special warehousing and storage, NEC
  • 4231 Trucking terminal and maintenance facilities
  • 4311 United States Postal Service
  • 5171 Petroleum bulk stations and terminals

Sector Q: Water transportation

  • 4412 Deep sea foreign freight transportation
  • 4424 Deep sea domestic freight transportation
  • 4432 Freight transportation on the Great Lakes/Saint Lawrence Seaway
  • 4449 Water freight transportation, NEC
  • 4481 Deep sea passenger transportation, NEC
  • 4482 Ferry operation
  • 4489 Water passenger operation, NEC
  • 4491 Marine cargo handling
  • 4492 Towing and tugboat services
  • 4493 Marina operation
  • 4499 Water transportation services, NEC

Sector R: Ship and boat building and repair yards Page 12 of 17

  • 3731 Ship building and repairing
  • 3732 Boat building and repairing

Sector S: Air transportation

  • 4512 Scheduled air transportation
  • 4513 Air courier services
  • 4522 Nonscheduled air transportation
  • 4581 Airports, flying fields, and airport terminal services

Sector T: Treatment Works - See Narrative Activities list

Sector U: Food and kindred products

  • 2011 Meat packing plants
  • 2013 Sausages and other prepared meat products
  • 2015 Poultry slaughtering and processing
  • 2021 Creamery butter
  • 2022 Natural, processed and imitation cheese
  • 2023 Dry, condensed and evaporated dairy products
  • 2024 Ice cream and frozen desserts
  • 2026 Fluid milk
  • 2032 Canned specialties
  • 2033 Canned fruits, vegetables, preserves, jams and jellies
  • 2034 Dried and dehydrated fruits, vegetables and soup mix
  • 2035 Pickled fruits and vegetables, sauces, seasonings, and salad dressings
  • 2037 Frozen fruits, fruit juices, and vegetables
  • 2038 Frozen specialties, NEC
  • 2041 Flour and other grain mill products
  • 2043 Cereal breakfast foods
  • 2044 Rice milling

v2045 Prepared flour mixes and doughs v2046 Wet corn milling

  • 2047 Dog and cat food
  • 2048 Prepared animal and foul feeds (except dog and cat food)
  • 2051 Bread and other bakery products (except cookies and crackers)
  • 2052 Cookies and crackers
  • 2053 Frozen bakery products (except bread)
  • 2061 Cane sugar (except refining)
  • 2062 Cane sugar refining
  • 2063 Beet sugar
  • 2064 Candy and other confectionary products
  • 2066 Chocolate and other cocoa products
  • 2067 Chewing gum
  • 2068 Salted and roasted nuts and seeds
  • 2074 Cottonseed oil mills
  • 2075 Soybean oil mills
  • 2076 Vegetable oil mills, except corn, cottonseed and soybean
  • 2077 Animal and marine fats and oils
  • 2079 Shortening, margarine, and other fats and oils, NEC
  • 2082 Malt beverages
  • 2083 Malt
  • 2084 Wines, brandy and brandy spirits
  • 2085 Distilled and blended liquors
  • 2086 Bottled and canned soft drinks and carbonated waters
  • 2087 Flavoring extracts and flavoring syrups, NEC
  • 2091 Canned and cured fish and seafoods
  • 2092 Prepared fresh or frozen fish and seafoods
  • 2095 Roasted coffee
  • 2096 Potato chips, corn chips, and similar snacks
  • 2097 Manufactured ice
  • 2098 Macaroni, spaghetti, vermicelli and noodles
  • 2099 Food preparations, NEC
  • 2111 Cigarettes
  • 2121 Cigars
  • 2131 Chewing and smoking tobacco and snuff
  • 2141 Tobacco stemming and redrying

Sector V: Textile Mills, Apparel, and Other Fabric Products Manufacturing

  • 2211 Broadwoven cotton mills
  • 2221 Broadwoven manmade fiber and silk mills
  • 2231 Broadwoven wool mills
  • 2241 Narrow cotton, wool, silk, and manmade fiber mills
  • 2251 Women’s full-length and knee-length hosiery (except socks)
  • 2252 Hosiery, NEC
  • 2253 Knit outerwear mills
  • 2254 Knit underwear and nightwear mills
  • 2257 Weft knit fabric mills
  • 2258 Lace and warp knit fabric mills
  • 2259 Knitting mills, NEC
  • 2261 Broadwoven cotton finishing plants
  • 2262 Broadwoven manmade fiber and silk finishing plants
  • 2269 Textile finishing plants, NEC
  • 2273 Carpets and rugs
  • 2281 Yarn spinning mills
  • 2282 Yarn texturizing, throwing, twisting, and winding mills
  • 2284 Thread mills
  • 2295 Coated fabrics, not rubberized
  • 2296 Tire cord and fabrics
  • 2297 Nonwoven fabrics
  • 2298 Cordage and twine
  • 2299 Textile goods, NEC
  • 2311 Men’s and boys’ suits, coats, and overcoats
  • 2321 Men’s and boys’ shirts (except work shirts)
  • 2322 Men’s and boys’ underwear and nightwear
  • 2323 Men’s and boys’ neckwear
  • 2325 Men’s and boys’ separate trousers and slacks
  • 2326 Men’s and boys’ work clothing
  • 2329 Men’s and boys’ clothing, NEC
  • 2331 Women’s, misses’ and juniors’ blouses and shirts
  • 2335 Women’s, misses’ and juniors’ dresses
  • 2337 Women’s, misses’ and juniors’ suits, skirts, and coats
  • 2339 Women’s, misses’ and juniors’ outerwear
  • 2341 Women’s, misses’ children’s, and infants’underwear and nightwear
  • 2342 Brassieres, girdles and allied garments
  • 2353 Hats, caps and millinery
  • 2361 Girl’s, children’s and infants’ dresses, blouses and shirts
  • 2369 Girl’s, children’s and infants’ outerwear, NEC
  • 2371 Fur goods
  • 2381 Dress and work gloves (except knit and all-leather)
  • 2384 Robes and dressing gowns
  • 2385 Waterproof outerwear
  • 2386 Leather and sheep-lined clothing
  • 2387 Apparel belts
  • 2389 Apparel and accessories, NEC
  • 2391 Curtains and draperies
  • 2392 House furnishings (except curtains and draperies)
  • 2393 Textile bags
  • 2394 Canvas and related products
  • 2395 Pleating, decorative and novelty stitching, tucking for the trade
  • 2396 Automotive trimmings, apparel findings and related products
  • 2397 Schiffli machine embroideries
  • 2399 Fabricated textile products, NEC
  • 3131 Boot and shoe cut stock and findings
  • 3142 House slippers
  • 3143 Men’s footwear (except athletic)
  • 3144 Women’s footwear (except athletic)
  • 3149 Footwear (except rubber), NEC
  • 3151 Leather gloves and mittens
  • 3161 Luggage
  • 3171 Women’s handbags and purses
  • 3172 Personal leather goods (except women’s handbags and purses)
  • 3199 Leather goods, NEC

Sector W: Furniture and Fixtures

  • 2434 Wood kitchen cabinets
  • 2511 Wood household furniture (except upholstered)
  • 2512 Upholstered wood household furniture
  • 2514 Metal household furniture
  • 2515 Mattresses, foundations, and convertible beds
  • 2517 Wood TV, radio, phonograph and sewing machine cabinets
  • 2519 Household furniture, NEC
  • 2521 Wood office furniture
  • 2522 Office furniture (except wood)
  • 2531 Public building and related furniture
  • 2541 Wood office and store fixtures, partitions, shelving and lockers
  • 2542 Office and store fixtures, partitions and shelving (except wood)
  • 2591 Drapery hardware, window blinds, and shades
  • 2599 Furniture and fixtures, NEC

Sector X: Printing and Publishing

  • 2711 Newspaper publishing or newspaper publishing and printing
  • 2721 Periodical publishing or periodical publishing and printing
  • 2731 Book publishing or book publishing and printing
  • 2732 Book printing
  • 2741 Miscellaneous publishing
  • 2752 Commercial lithographic printing
  • 2754 Commercial gravure printing
  • 2759 Commercial printing, NEC
  • 2761 Manifold business forms
  • 2771 Greeting cards
  • 2782 Blankbooks, looseleaf binders, and devices
  • 2789 Bookbinding and related work
  • 2791 Typesetting
  • 2796 Platemaking and related services

Sector Y: Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries

  • 3011 Tires and inner tubes
  • 3021 Rubber and plastic footwear
  • 3052 Rubber, plastic hose, and belting
  • 3053 Gaskets, packing and sealing devices
  • 3061 Molded, extruded and lathe-cut mechanical rubber goods
  • 3069 Fabricated rubber products, NEC
  • 3081 Unsupported plastics film and sheet
  • 3082 Unsupported plastics profile shapes
  • 3083 Laminated plastics plate, sheet and profile shapes
  • 3084 Plastics pipe
  • 3085 Plastics bottles
  • 3086 Plastics foam products
  • 3087 Custom compounding of purchased plastics resins
  • 3088 Plastics plumbing, fixtures
  • 3089 Plastics products, NEC
  • 3931 Musical instruments
  • 3942 Dolls and stuffed toys
  • 3944 Games, toys, and children’s vehicles (except dolls and bicycles)
  • 3949 Sporting and athletic goods, NEC
  • 3951 Pens, mechanical pencils, and parts
  • 3953 Marking devices
  • 3955 Carbon paper and inked ribbons
  • 3961 Costume jewelry and novelties (except precious metal)
  • 3965 Fasteners, buttons, needles, and pins
  • 3991 Brooms and brushes
  • 3993 Signs and advertising specialties
  • 3995 Burial caskets
  • 3996 Linoleum and other hard surface floor coverings, NEC
  • 3999 Manufacturing industries, NEC

Sector Z: Leather Tanning and Finishing

  • 3111 Leather tanning and finishing

Sector AA: Fabricated Metal Products

  • 3411 Metal cans
  • 3412 Metal shipping barrels, drums, kegs, and pails
  • 3421 Cutlery
  • 3423 Hand and edge tools (except machine tools and handsaws)
  • 3425 Saw blades and handsaws
  • 3429 Hardware, NEC
  • 3431 Enameled iron and metal sanitary ware
  • 3432 Plumbing fixtures and trim
  • 3433 Heating equipment (except electric and warm air furnaces)
  • 3441 Fabricated structural metal
  • 3442 Metal doors, frames, sash, molding and trim
  • 3443 Fabricated plate work (boiler shops)
  • 3444 Sheet metal work
  • 3446 Architectural and ornamental metal work
  • 3448 Prefabricated metal buildings and components
  • 3449 Miscellaneous structural metal work
  • 3451 Screw machine products
  • 3452 Bolts, nuts, screws, rivets, and washers
  • 3462 Iron and steel forgings
  • 3463 Nonferrous forgings
  • 3465 Automotive stampings
  • 3466 Crowns and closures
  • 3469 Metal stampings, NEC
  • 3471 Electroplating, plating, polishing, anodizing, and coloring
  • 3479 Coating, engraving, and allied services, NEC
  • 3482 Small arms ammunition
  • 3483 Ammunition (except small arms)
  • 3484 Small arms
  • 3489 Ordnance and accessories, NEC
  • 3491 Industrial valves
  • 3492 Fluid power valves and hose fittings
  • 3493 Steel springs (except wire)
  • 3494 Valves and pipe fittings, NEC
  • 3495 Wire springs
  • 3496 Miscellaneous fabricated wire products
  • 3497 Metal foil and leaf
  • 3498 Fabricated pipe and pipe fittings
  • 3499 Fabricated metal products, NEC
  • 3911 Precious metal jewelry
  • 3914 Silverware, plated ware, and stainless steel ware
  • 3915 Jewelers’ findings and materials and lapidary work

Sector AB: Transportation Equipment and Industrial or Commercial Machinery

  • 3511 Steam, gas and hydraulic turbines and generator units
  • 3519 Internal combustion engines, NEC
  • 3523 Farm machinery and equipment
  • 3524 Lawn and garden tractors and home lawn and garden equipment
  • 3531 Construction machinery and equipment
  • 3532 Mining machinery and equipment (except oil and gas field)
  • 3533 Oil and gas machinery and equipment
  • 3534 Elevators and moving stairways
  • 3535 Conveyors and conveying equipment
  • 3536 Overhead traveling cranes, hoists, and monorail systems
  • 3537 Industrial trucks, tractors, trailers, and stackers
  • 3541 Metal cutting machine tools
  • 3542 Metal forming machine tools
  • 3543 Industrial patterns
  • 3544 Special dies, tools, die sets, jigs, fixtures and molds
  • 3545 Cutting tools, accessories and precision measuring devices
  • 3546 Power-driven handtools
  • 3547 Rolling mill machinery and equipment
  • 3548 Electric and gas welding and soldering equipment
  • 3549 Metalworking machinery, NEC
  • 3552 Textile machinery
  • 3553 Woodworking machinery
  • 3554 Paper industries machinery
  • 3555 Printing trades machinery and equipment
  • 3556 Food products machinery
  • 3559 Special industry machinery, NEC
  • 3561 Pumps and pumping equipment
  • 3562 Ball and roller bearings
  • 3563 Air and gas compressors
  • 3564 Industrial and commercial fans, blowers, and air purification equipment
  • 3565 Packaging machinery
  • 3566 Speed changers, industrial high speed drives and gears
  • 3567 Industrial process furnaces and ovens
  • 3568 Mechanical power transmission equipment, NEC
  • 3569 General industrial machinery and equipment, NEC
  • 3581 Automatic vending machines
  • 3582 Commercial laundry, dry cleaning, and pressing machines
  • 3585 Air-conditioning, heating, and refrigeration equipment
  • 3586 Measuring and dispensing pumps
  • 3589 Service industry machinery, NEC
  • 3592 Carburetors, pistons, piston rings, and valves
  • 3593 Fluid power cylinders and actuators
  • 3594 Fluid power pumps and motors
  • 3596 Scales and balances (except laboratory)
  • 3599 Industrial and commercial machinery and equipment, NEC
  • 3711 Motor vehicles and passenger car bodies
  • 3713 Truck and bus bodies
  • 3714 Motor vehicle parts and accessories
  • 3715 Truck trailers
  • 3716 Motor homes
  • 3721 Aircraft
  • 3724 Aircraft engines and engine parts
  • 3728 Aircraft parts and auxiliary equipment, NEC
  • 3743 Railroad equipment
  • 3751 Motorcycles, bicycles, and parts
  • 3761 Guided missiles and space vehicles
  • 3764 Guided missile and space vehicle propulsion units parts
  • 3769 Guided missile and space vehicle parts and equipment NEC
  • 3792 Travel trailers and campers
  • 3795 Tanks and tank components
  • 3799 Transportation equipment, NEC

Sector AC: Electronic and Electrical Equipment and Components, Photographic and Optical Goods

  • 3571 Electronic computers
  • 3572 Computer storage devices
  • 3575 Computer terminals
  • 3577 Computer peripheral equipment, NEC
  • 3578 Calculating and accounting machines (except electronic computers)
  • 3579 Office machines, NEC
  • 3612 Power, distribution and specialty transformers
  • 3613 Switchgear and switchboard apparatus
  • 3621 Motors and generators
  • 3624 Carbon and graphite products
  • 3625 Relays and industrial controls
  • 3629 Electrical industrial apparatus, NEC
  • 3631 Household cooking equipment
  • 3632 Household refrigerators and home and farm freezers
  • 3633 Household laundry equipment
  • 3634 Electric housewares and fans
  • 3635 Household vacuum cleaners
  • 3639 Household appliances, NEC
  • 3641 Electric lamp bulbs and tubes
  • 3643 Current-carrying wiring devices
  • 3644 Noncurrent-carrying wiring devices
  • 3645 Residential electric lighting fixtures
  • 3646 Commercial, industrial and institutional electric lighting fixtures
  • 3647 Vehicular lighting equipment
  • 3648 Lighting equipment, NEC
  • 3651 Household audio and video equipment
  • 3652 Phonograph records and prerecorded audio tapes and disks
  • 3661 Telephone and telegraph apparatus
  • 3663 Radio and TV broadcasting and communications equipment
  • 3669 Communications equipment, NEC
  • 3671 Electron bulbs
  • 3672 Printed circuit boards
  • 3674 Semiconductors and related devices
  • 3675 Electronic capacitors
  • 3676 Electronic resistors
  • 3677 Electronic coils, transformers, and other inductors
  • 3678 Electronic connectors
  • 3679 Electronic components, NEC
  • 3691 Storage batteries
  • 3692 Primary batteries (dry and wet)
  • 3694 Electrical equipment for internal combustion engines
  • 3695 Magnetic and optical recording media
  • 3699 Electrical machinery, equipment, and supplies, NEC
  • 3812 Search, detection, navigation, and guidance systems
  • 3821 Laboratory apparatus and furniture
  • 3822 Automatic environmental and appliance controls
  • 3823 Process measurement, display, and control instruments
  • 3824 Totalizing fluid meters and counting devices
  • 3825 Electricity and signal measurement and testing instruments
  • 3826 Laboratory analytical instruments
  • 3827 Optical instruments and lenses
  • 3829 Measuring and controlling devices, NEC
  • 3841 Surgical and medical instruments and apparatus
  • 3842 Orthopedic, prosthetic and surgical appliances and supplies
  • 3843 Dental equipment and supplies
  • 3844 X-Ray apparatus and tubes and related irradiation apparatus
  • 3845 Electromedical and electrotherapeutic apparatus
  • 3851 Ophthalmic goods
  • 3861 Photographic equipment and supplies
  • 3873 Watches, clocks, clockwork operated devices and parts

Narrative activities list

  • A4: Logging: discharges from wet decking storage areas
  • C1: Stormwater runoff from phosphate fertilizer manufacturing that comes into contact with any raw materials/finished products/by-products/waste products
  • D2: Stormwater runoff from an asphalt emulsion facility
  • E3: Cement manufacturing facility, material storage runoff (Note: this is not a ready mix concrete facility.)
  • K1: Hazardous waste treatment/storage/disposal facility for discharges not subject to effluent limitations in 40 CFR pt. 445 subp. A (Note: this is not a hazardous waste generator.)
  • K2: Hazardous waste treatment/storage/disposal facility for discharges subject to effluent limitations In 40 CFR pt. 445 subp. A (Note: this is not a hazardous waste generator.)
  • L1: Municipal solid waste landfill areas closed in accordance with 40 CFR 258.60
  • L2: Open or closed non-hazardous waste landfill and land application site not discharging to surface water
  • L3: Landfill that discharges to surface waters stormwater that has directly contacted solid waste
  • O1: Coal fired and oil fired steam electric generating facility
  • O2: Nuclear, natural gas fired, and any other fuel source used for steam electric generation
  • O3: Runoff from coal storage piles at steam electric generating facility
  • S3: Existing and new primary airports with 1,000 or more annual jet departures that discharge wastewater associated with airfield pavement deicing that contains urea commingled with stormwater
  • T1: Treatment works with design flow of 1 million gallons per day or more or that are required to have an approved pretreatment program under 40 CFR pt. 403.

This page was last modified on 4 December 2017, at 15:30.

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