Appendix N - List of SIC and NAICS Codes

Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
A3	2411	Logging (log storage and handling activities only; wet deck storage areas only authorized if no chemical additives are used in the spray water or applied to the logs.)	113310	Logging
A1	2421	General Sawmills and Planing Mills	321113	Sawmills
A1	2421	(sawmills) (lumber manufacturing from purchased lumber, softwood cut stock, wood lath, fence pickets, and planing mill products)	321912	Cut Stock, Resawing Lumber, and Planing
A1	2421	(softwood flooring)	321918	Other Millwork (including Flooring)
A1	2421	(box lumber made from purchased lumber)	321920	Wood Container and Pallet Manufacturing
A1	2421	(kiln drying)	321999	All Other Miscellaneous Wood Product Manufacturing
A4	2426	Hardwood Dimension and Flooring Mills (hardwood dimension lumber made from logs or bolts)	321113	Sawmills
A4	2426	(hardwood cut stock, resawing hardwood lumber, and planing purchased hardwood lumber except flooring)	321912	Cut Stock, Resawing Lumber, and Planing
A4	2426	(hardwood flooring)	321918	Other Millwork (including Flooring)
A4	2426	(wood furniture frames and finished furniture parts)	337215	Showcase, Partition, Shelving, and Locker Manufacturing
	2429	Special Product Sawmills, Not Elsewhere Classified (shingle mills, shakes)	321113	Sawmills
	2429	(stave manufacturing from purchased lumber)	321912	Cut Stock, Resawing Lumber, and Planing
	2429	(cooperage stock)	321920	Wood Container and Pallet Manufacturing
	2429	(excelsior)	321999	All Other Miscellaneous Wood Product Manufacturing
	2431	Millwork (wood windows and doors)	321911	Wood Window and Door Manufacturing

Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products	Sector A. Timber Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	(except wood windows and doors)	(except wood windows and doors)	321918	Other Millwork (including Flooring)
	2435	Hardwood Veneer and Plywood	321211	Hardwood Veneer and Plywood Manufacturing
	2436	Softwood Veneer and Plywood	321212	Softwood Veneer and Plywood Manufacturing
	2439	Structural Wood Members, Not Elsewhere Classified (except trusses)	321213	Engineered Wood Member (except Truss) Manufacturing
		(trusses)	321214	Truss Manufacturing
A5	2441	Nailed and Lock Corner Wood Boxes and Shook	321920	Wood Container and Pallet Manufacturing
A4	2448	Wood Pallets and Skids	321920	Wood Container and Pallet Manufacturing
A4	2449	Wood Containers, Not Elsewhere Classified	321920	Wood Container and Pallet Manufacturing
A4	2451	Mobil Homes	321991	Manufactured Home (Mobil Home) Manufacturing
A4	2452	Prefabricated Wood Buildings and Components	321992	Prefabricated Wood Building Manufacturing
A2	2491	Wood Preserving	321114	Wood Preservation
A4	2493	Reconstituted Wood Products	321219	Reconstituted Wood Product Manufacturing
	2499	Wood Products, Not Elsewhere Classified (wood containers, such as noncoopered vats and reed or straw baskets)	321920	Wood Container and Pallet Manufacturing
		(except wood containers, wood cooling towers, cork life preservers, mirror or picture frames, and laundry hampers of reed, rattan, and willow)	321999	All Other Miscellaneous Wood Product Manufacturing
		(wood cooling towers)	333415	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
		(laundry hampers of reed, rattan, and willow)	337125	Household Furniture (except Wood and Metal) Manufacturing
		(cork life preservers)	339113	Surgical Appliance and Supplies Manufacturing
		(mirror and picture frames)	339999	All Other Miscellaneous Manufacturing

Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
B2	2611	Pulp Mills (pulp producing mills only) (producing paper except newsprint) (producing newsprint)	322110 322121 322122	Pulp Mills Paper (except Newsprint) Mills Newsprint Mills
	2621	(producing paperboard) Paper Mills (except newsprint mills) (newsprint mills)	322130 322121 322122	Paperboard Mills Paper (except Newsprint) Mills Newsprint Mills
B1	2631	Paperboard Mills	322130	Paperboard Mills
B2	2652	Setup Paperboard Boxes	322213	Setup Paperboard Box Manufacturing
	2653	Corrugated and Solid Fiber Boxes	322211	Corrugated and Solid Fiber Boxes Manufacturing
	2655	Fiber Cans, Tubes, Drums, and Similar Products	322214	Fiber Can, Tube, Drum, and Similar Products Manufacturing
	2656 2657	Sanitary Food Containers, Except Folding Folding Paperwork Boxes	322215 322212	Nonfolding Sanitary Food Container Manufacturing Folding Paperboard Box Manufacturing
	2671	Packaging Paper and Plastics Film, Coated and Laminated
		(except single-web and multi-web plastics packaging film and sheets)	322221	Coated and Laminated Packaging Paper and Plastics Film Manufacturing
		(single-web and multi-web plastics packaging film and sheets)	326112	Plastics Packaging Film and Sheet (including Laminated) Manufacturing	Any facility whose primary activity is manufacturing single-web and multi- web plastics packaging film and sheets (SIC 2671 / NAICS 326112) should be regulated under Sector Y, but may continue to be regulated under Sector B, or alternatively, under Sector AD. Sectors Y, B, and AD do not have specific requirements for facilities manufacturing single-web and multi-web plastics packaging film and sheets. However, under Sector AD EPA could establish additional facility-specific monitoring and reporting requirements. Regulatory burden would not differ between Sectors B and Y.
	2672	Coated and Laminated Paper, NEC	322222	Coated and Laminated Paper Manufacturing

Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector	2673	Plastics, Foil, and Coated Paper Bags (except single-web or multi-web	322223	Plastics, Foil, and Coated Paper Bags Manufacturing
		single-web and multi-web plastics bags)	326111	Plastics Bag Manufacturing	Any facility whose primary activity is manufacturing single-web and multi- web plastics bags (SIC 2673 / NAICS 326111) should be regulated under Sector Y, but may continue to be regulated under Sector B, or alternatively, under Sector AD. Sectors Y, B, and AD do not have specific requirements for facilities manufacturing single-web and multi- web plastics bags. However, under Sector AD EPA could establish additional facility-specific monitoring and reporting requirements. Regulatory burden would not differ between Sectors B and Y.
	2674	Uncoated Paper and Multiwall Bags	322224	Uncoated Paper and Multiwall Bags Manufacturing
	2675	Die Cut Paper and Paperboard and Cardboard (pasted, lined, laminated, or surface- coated paperboard)	322226	Surface-Coated Paperboard Manufacturing
		(die cut paper and paperboard office supplies, such as file folders, tabulating cards, and report covers)	322231	Die Cut Paper and Paperboard Office Supplies Manufacturing
		(except pasted, lined, laminated, or surface-coated paperboard and die- cut paper and paperboard office supplies)	322299	All Other Converted Paper Product Manufacturing
	2676	Sanitary Paper Products	322291	Sanitary Paper Product Manufacturing
	2677	Envelopes	322232	Envelope Manufacturing
	2678	Stationery, Tablets, and Related Products	322233	Stationery, Tablets, and Related Product Manufacturing
	2679	Converted Paper and Paperboard Products, NEC (corrugated paper)	322211	Corrugated and Solid Fiber Box Manufacturing
		(wallpaper and gift wrap paper)	322222	Coated and Laminated Paper Manufacturing

Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing	Sector B. Paper and Allied Products Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes Notes	NAICS Codes Notes
		(paper supplies for business machines, such as adding machine tape, and other paper office supplies)	322231 Die Cut Paper and Paperboard Office Manufacturing
		(except corrugated paper, wall paper, gift wrap paper, paper supplies for business machines, and other paper office supplies)	322299 All Other Converted Paper Product Manufacturing

Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
C2	2812	Alkalies and Chlorine	325181	Alkalies and Chlorine Manufacturing
C2	2813	Industrial Gases	325120	Industrial Gas Manufacturing
C2	2816	Inorganic Pigments (except bone and lamp black)	325131	Inorganic Dye and Pigment Manufacturing
C2		(bone and lamp black)	325182	Carbon Black Manufacturing
C2	2819	Industrial Inorganic Chemicals, Not Elsewhere Classified (recovering sulfur from natural gas)	211112	Natural Gas Liquid Extraction
C2		(inorganic dyes)	325131	Inorganic Dye and Pigment Manufacturing
C2		(other)	325131	All Other Basic Inorganic Chemical Manufacturing
C2		(activated carbon and charcoal)	325998	All Other Miscellaneous Chemical Product and Preparation Manufacturing
C2		(alumina)	331311	Alumina Refining	Any facility whose primary activity is alumina refining (NAICS 331311) should be regulated under Sector F, but may continue to be regulated under Sector C. Sector C requires sector/subsector specific benchmark monitoring for total aluminum, total iron, and nitrate plus nitrite nitrogen. Sector F applies additional technology- based effluent limits comprised of good housekeeping measures; additional SWPPP requirements; and additional inspection requirements.

Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
C4	2821	Plastics Materials, Synthetic Resins, and Nonvulcanizable Elastomers	325211	Plastics Material and Resin Manufacturing
	2822	Synthetic Rubber	325212	Synthetic Rubber Manufacturing
	2823	Cellulosic Manmade Fibers	325221	Cellulosic Organic Fiber Manufacturing
	2824	Manmade Organic Fibers, Except Cellulosic	325222	Noncellulosic Organic Fiber Manufacturing
C5	2833	Medicinal Chemicals and Botanical Products	325411	Medicinal and Botanical Manufacturing
	2834	Pharmaceutical Preparations	325412	Pharmaceutical Preparation Manufacturing
	2835	In Vitro and In Vivo Diagnostic Substances (except in vitro diagnostic)	325412 325413	Pharmaceutical Preparation Manufacturing In Vitro Diagnostic Substance Manufacturing
	2836	(in vitro diagnostic substances) Biological Products, Except Diagnostic Substances	325414	Biological Product (except Diagnostic) Manufacturing
C3	2841	Soaps and Other Detergents, Except Specialty Cleaners	325611	Soap and Other Detergent Manufacturing
	2842	Specialty Cleaning, Polishing, and Sanitation Preparations	325612	Polish and Other Sanitation Good Manufacturing
	2843	Surface Active Agents, Finishing Agents, Sulfonated Oils, and Assistants	325613	Surface Active Agent Manufacturing
	2844	Perfumes, Cosmetics, and Other Toilet Preparations (toothpaste, gel and dentifrice powders)	325611	Soap and Other Detergent Manufacturing
		(except toothpaste, gel and dentifrice powders)	325620	Toilet Preparation Manufacturing
C5	2851	Paints, Varnishes, Lacquers, Enamels, and Allied Products	325510	Paint and Coating Manufacturing
	2861	Gum and Wood Chemicals	325191	Gum and Wood Chemical Manufacturing
	2865	Cyclic Organic Crudes and Intermediates, and Organic Dyes and Pigments (aromatics)	325110	Petrochemical Manufacturing Synthetic Organic Dye and Pigment
		(organic dyes and pigments)	325132	Manufacturing

Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(except aromatics and organic dyes and pigments)	325192	Cyclic Crude and Intermediate Manufacturing
	2869	Industrial Organic Chemicals, Not Elsewhere Classified	325110	Petrochemical Manufacturing
		(aliphatics) (fluorocarbon gases)	325120	Industrial Gas Manufacturing
		(carbon bisulfide)	325188	All Other Basic Inorganic Chemical Manufacturing
		(cyclopropane, diethylcyclohexane, naphthalene sulfonic acid)	325192	Cyclic Crude and Intermediate Manufacturing
		(ethyl alcohol)	325193	Ethyl Alcohol Manufacturing
		(except aliphatics, carbon bisulfide, ethyl alcohol, cyclopropane, diethylcyclohexane, napthalene sulfonic acid, synthetic hydraulic fluids, and fluorocarbon gases)	325199	All Other Basic Organic Chemical Manufacturing
		(synthetic hydraulic fluids)	325998	All Other Miscellaneous Chemical Product and Preparation Manufacturing
C1	2873	Nitrogenous Fertilizers	325311	Nitrogenous Fertilizer Manufacturing
	2874	Phosphatic Fertilizers	325312	Phosphatic Fertilizer Manufacturing
	2875	Fertilizers, Mixing Only	325314	Fertilizers (Mixing Only) Manufacturing
	2879	Pesticides and Agricultural Chemicals, NEC	325320	Pesticides and Other Agricultural Chemical Manufacturing
C5	2891	Adhesives and Sealants	325520	Adhesive Manufacturing
	2892	Explosives	325920	Explosives Manufacturing
	2893	Printing Ink	325910	Printing Ink Manufacturing
	2895	Carbon Black	325182	Carbon Black Manufacturing
	2899	Chemicals and Chemical Preparations, NEC (table salt)	311942	Spice and Extract Manufacturing (table salt only)
		(fatty acids)	325199	All Other Basic Organic Chemical Manufacturing
		(frit and plastic wood fillers) (except frit, plastic wood fillers, fatty acids, and table salt)	325510 325998	Paint and Coating Manufacturing All Other Miscellaneous Chemical Product and Preparation Manufacturing
	2911	Petroleum Refining	324110	Petroleum Refineries
	3952	Lead Pencils, Crayons, and Artists' Materials (limited to inks and paints, including china painting enamels) (drawing inks and india ink)	325998	All Other Miscellaneous Chemical Product and Preparation Manufacturing

Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing	Sector C. Chemical and Allied Products Manufacturing
Sub- sector	SIC Codes	NAICS Codes	NAICS Codes	Notes
	(china painting enamels, platinum paint for burnt wood or leather work, paints for china painting, artist's paints, and artist's watercolors)	339942	Lead Pencil and Art Good Manufacturing

Sector D. Asphalt Paving and Roofing Materials Manufacturers and Lubricant Manufacturers	Sector D. Asphalt Paving and Roofing Materials Manufacturers and Lubricant Manufacturers	Sector D. Asphalt Paving and Roofing Materials Manufacturers and Lubricant Manufacturers	Sector D. Asphalt Paving and Roofing Materials Manufacturers and Lubricant Manufacturers	Sector D. Asphalt Paving and Roofing Materials Manufacturers and Lubricant Manufacturers	Sector D. Asphalt Paving and Roofing Materials Manufacturers and Lubricant Manufacturers
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
D1	2951	Asphalt Paving Mixtures and Blocks	324121	Asphalt Paving Mixture and Block Manufacturing
	2952	Asphalt Felt and Coatings	324122	Asphalt Shingle and Coating Materials Manufacturing
D2	2992	Lubricating Oils and Greases	324191	Petroleum Lubricating Oil and Grease Manufacturing
	2999	Products of Petroleum and Coal, Not Elsewhere Classified	324199	All Other Petroleum and Coal Products Manufacturing

Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
E3	3211	Flat Glass	327211	Flat Glass Manufacturing
E3	3221	Glass Containers	327213	Glass Container Manufacturing
E3	3229	Pressed and Blown Glass and Glassware, Not Elsewhere Classified	327212	Other Pressed and Blown Glass and Glassware Manufacturing
E3	3231	Glass Product Manufacturing Made of Purchased Glass	327215	Glass Product Manufacturing Made of Purchased Glass
E3	3241	Hydraulic Cement	327310	Cement Manufacturing
E1	3251	Brick and Structural Clay Tile (except slumped brick)	327121	Brick and Structural Clay Tile Manufacturing
E1		(slumped brick)	327331	Concrete Block and Brick Manufacturing
E1	3253	Ceramic Wall and Floor Tile	327122	Ceramic Wall and Floor Tile Manufacturing
E1	3255	Clay Refractories	327124	Clay Refractory Manufacturing
E1	3259	Structural Clay Products, Not Elsewhere Classified	327123	Other Structural Clay Product Manufacturing
E1	3261	Vitreous China Plumbing Fixtures and China and Earthenware Fittings and Bathroom Accessories	327111	Vitreous China Plumbing Fixture and China and Earthenware Bathroom Accessories Manufacturing

Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
E2	3262	Vitreous China Table and Kitchen Articles	327112	Vitreous China, Fine Earthenware, and Other Pottery Product Manufacturing
E2	3263	Fine Earthenware (Whiteware) Table and Kitchen Articles	327112	Vitreous China, Fine Earthenware, and Other Pottery Product Manufacturing
E2	3264	Porcelain Electrical Supplies	327113	Porcelain Electrical Supply Manufacturing
E2	3269	Pottery Products, Not Elsewhere Classified	327112	Vitreous China, Fine Earthenware, and Other Pottery Product Manufacturing
	3271	Concrete Block and Brick	327331	Concrete Block and Brick Manufacturing
	3272	Concrete Products, Except Block and Brick (concrete pipe)	327332	Concrete Pipe Manufacturing
		(concrete products, except dry mix concrete and pipe)	327390	Other Concrete Product Manufacturing
		(dry mixture concrete)	327999	All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
	3273	Ready-Mixed Concrete	327320	Ready-Mix Concrete Manufacturing
	3274	Lime Manufacturing Calcium hydroxide (i.e., hydrated lime) manufacturing	327410	Lime Manufacturing
		Calcium oxide (i.e., quicklime) manufacturing	327410	Lime Manufacturing
		Dolomite, dead-burned, manufacturing	327410	Lime Manufacturing
		Hydrated lime (i.e., calcium hydroxide) manufacturing	327410	Lime Manufacturing
		Quicklime (i.e., calcium oxide) manufacturing	327410	Lime Manufacturing
		Agricultural lime manufacturing	327410	Lime Manufacturing
		Dolomitic lime manufacturing	327410	Lime Manufacturing
	3275	Gypsum Products	327420	Gypsum Product Manufacturing

Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
E3	3281	Cut Stone and Stone Products	327991	Cut Stone and Stone Product Manufacturing
		Abrasive Products (except steel wool manufacturing)	327910	Abrasive Product Manufacturing
	3291	(steel wool manufacturing)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing	Any facility whose primary activity is steel wool manufacturing (NAICS 332999) should be regulated under Sector AA, but may continue to be regulated under Sector E. Sector AA applies additional technology-based effluent limits comprised of good housekeeping measures, spill prevention and response procedures, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector E applies additional technology-based effluent limits comprised of good housekeeping measures, and additional SWPPP requirements.
					Regulatory burden would likely be greater under Sector AA.
	3292	Asbestos Products (except brake pads and linings)	327999	All Other Miscellaneous Nonmetallic Mineral Product Manufacturing
		(asbestos brake linings and pads)	336340	Motor Vehicle Brake System Manufacturing
		(asbestos clutch facings, motor	336350	Motor Vehicle Transmission and Power Train Parts Manufacturing
	3295	vehicle) Minerals and Earths, Ground or Otherwise Treated (grinding, washing, separating, etc. of kaolin and ball clay)	212324	Kaolin and Ball Clay Mining
		(grinding, washing, separating, etc. of clay, ceramic, and refractory minerals not elsewhere classified)	212325	Clay and Ceramic and Refractory Minerals Mining
		(grinding, washing, separating, etc. of chemical and fertilizer minerals, not elsewhere classified)	212393	Other Chemical and Fertilizer Mineral Mining
		(grinding, washing, separating, etc. of nonmetallic minerals, not elsewhere classified)	212399	All Other Nonmetallic Mineral Mining
		(except grinding, washing, separating, etc. of nonmetallic minerals)	327992	Ground or Treated Mineral and Earth Manufacturing

Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing	Sector E. Glass, Clay, Cement, Concrete, and Gypsum Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3296	Mineral Wool	327993	Mineral Wool Manufacturing
	3297	Nonclay Refractories	327125	Nonclay Refractory Manufacturing
	3299	Nonmetallic Mineral Products, Not Elsewhere Classified (clay statuary)	327112	Vitreous China, Fine Earthenware, and Other Pottery Product Manufacturing
		(moldings, ornamental and architectural plaster work, and gypsum statuary )	327420	Gypsum Product Manufacturing
		(except moldings, ornamental and architectural plaster work, clay statuary, and gypsum statuary)	327999	All Other Miscellaneous Nonmetallic Mineral Product Manufacturing

Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
F1	3312	Steel Works, Blast Furnaces (Including Coke Ovens), and Rolling Mills
		(coke oven products [e.g., coke, gases, tars] made in coke oven establishments)	324199	All Other Petroleum and Coal Products Manufacturing	Any facility whose primary activity is manufacturing coke oven products (e.g., coke, gases, tars) made in coke oven establishments should be regulated under Sector D, but may continue to be regulated under Sector F. Sector F requires sector-specific benchmark monitoring requirements for total aluminum and total zinc, Sector D does not require benchmark monitoring from these facilities. Regulatory burden would be greater under Sector F.
		(except coke ovens not integrated with steel mills and hot-rolling purchased steel)	331111	Iron and Steel Mills
		(hot-rolling purchased steel)	331221	Rolled Steel Shape Manufacturing
	3313	Electrometallurigcal Products, Except Steel	331112	Electrometallurigcal Ferroalloy Product Manufacturing

Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3315	Steel Wiredrawing and Steel Nails and Spikes	331222	Steel Wire Drawing
	3315	(steel wire drawing)	331222	Steel Wire Drawing
	3316	Cold-Rolled Steel Sheet, Strip, and Bars	331221	Rolled Steel Shape Manufacturing
	3317	Steel Pipe and Tubes	331210	Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
F2	3321	Gray and Ductile Iron Foundries	331511	Iron Foundries
F2	3322	Malleable Iron Foundries	331511	Iron Foundries
F2	3324	Steel Investment Foundries	331512	Steel Investment Foundries
F2	3325	Steel Foundries, NEC	331513	Steel Foundries (except Investment)
F5	3331	Primary Smelting and Refining of Copper	331411	Primary Smelting and Refining of Copper
F5	3334	Primary Production of Aluminum	331312	Primary Aluminum Production
F5	3339	Primary Smelting and Refining of Nonferrous Metals, Except Copper and Aluminum	331419	Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum)
F5	3341	Secondary Smelting and Refining of Nonferrous Metals (aluminum)	331314	Secondary Smelting and Alloying of Aluminum
F5	3341	(copper)	331423	Secondary Smelting, Refining and Alloying of Copper
F5	3341	(except copper and aluminum)	331492	Secondary Smelting, Refining and Alloying of Nonferrous Metal (except Copper and Aluminum)
F3	3351	Rolling, Drawing, and Extruding of Copper	331421	Copper Rolling, Drawing, and Extruding
F3	3353	Aluminum Sheet, Plate, and Foil	331315	Aluminum Sheet, Plate, and Foil Manufacturing
F3	3354	Aluminum Extruded Products	331316	Aluminum Extruded Product Manufacturing
F3	3355	Aluminum Rolling and Drawing, Not Elsewhere Classified	331319	Other Aluminum Rolling and Drawing
F3	3356	Rolling, Drawing, and Extruding of Nonferrous Metals, Except Copper and Aluminum	331491	Nonferrous Metal (Except Copper and Aluminum) Rolling, Drawing, and Extruding
F3	3357	Drawing and Insulating of Nonferrous Wire (aluminum wire drawing)	331319	Other Aluminum Rolling and Drawing
F3	3357	(copper wire drawing)	331422	Copper Wire (except Mechanical) Drawing
F3	3357	(wire drawing except copper or aluminum)	331491	Nonferrous Metal (except Copper and Aluminum) Rolling, Drawing, and Extruding

Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals	Sector F. Primary Metals
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(fiber optic cable-insulating only)	335921	Fiber Optic Cable Manufacturing
		(communication and energy wire, except fiber optic-insulating only)	335929	Other Communication and Energy Wire Manufacturing
F4	3363	Aluminum Die Castings	331521	Aluminum Die Casting Foundries
F4	3364	Nonferrous Die Castings, Except Aluminum	331522	Nonferrous (Except Aluminum) Die Casting Foundries
F4	3365	Aluminum Foundries	331524	Aluminum Foundries (Except Die-Casting)
F4	3366	Copper Foundries	331525	Copper Foundries (Except Die-Casting)
F4	3369	Nonferrous Foundries, Except Copper and Aluminum	331528	Other Nonferrous Foundries (Except Die- Casting)
F5	3398	Metal Heat Treating	332811	Metal Heat Treating
F5	3399	Primary Metal Products, Not Elsewhere Classified (iron ore recovery from open hearth slag)	331111	Iron and Steel Mills
F5		(ferrous powder, paste, flakes, etc.)	331221	Rolled Steel Shape Manufacturing
F5		(aluminum powder, paste, flakes, etc.)	331314	Secondary Smelting and Alloying of Aluminum
F5		(copper powder, paste, flakes, etc.)	331423	Secondary Smelting, Refining, and Alloying of Copper
F5		(nonferrous powder, paste, flakes, etc. except copper and aluminum)	331492	Secondary Smelting, Refining, and Alloying of Nonferrous Metal (except Copper and Aluminum)
F5		(nonferrous nails, brads, staples, tacks, etc. made from purchased nonferrous wire)	332618	Other Fabricated Wire Product Manufacturing

Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
G1	1021	Copper Ores	212234	Copper Ore and Nickel Ore Mining
G2	1011	Iron Ores	212210	Iron Ore Mining
G2	1021	Copper Ores	212234	Copper Ore and Nickel Ore Mining
G2	1031	Lead and Zinc Ores	212231	Lead Ore and Zinc Ore Mining
G2	1041	Gold Ores	212221	Gold Ore Mining
G2	1044	Silver Ores	212222	Silver Ore Mining
G2	1061	Ferroalloy Ores, Except Vanadium (nickel)	212234	Copper Ore and Nickel Ore Mining
G2		(other ferroalloys except nickel)	212299	All Other Metal Ore Mining
G2		Metal Mining Services

Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)	Sector G. Metal Mining (Ore Mining and Dressing)
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	1081	(except site preparation and related activities performed on a contract or fee basis and geophysical surveying and mapping)	213114	Support Activities for Metal Mining
		(site preparation and related construction activities on a contract basis)	238910	Site Preparation Contractors
	1094	Uranium-Radium-Vanadium Ores	212291	Uranium-Radium-Vanadium Ore Mining
	1099	Miscellaneous Metal Ores, Not Elsewhere Classified	212299	All Other Metal Ore Mining

Sector H. Coal Mines and Coal Mining-Related Facilities	Sector H. Coal Mines and Coal Mining-Related Facilities	Sector H. Coal Mines and Coal Mining-Related Facilities	Sector H. Coal Mines and Coal Mining-Related Facilities	Sector H. Coal Mines and Coal Mining-Related Facilities	Sector H. Coal Mines and Coal Mining-Related Facilities
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
H1	1221	Bituminous Coal and Lignite Surface Mining	212111	Bituminous Coal and Lignite Surface Mining
H1	1222	Bituminous Coal Underground Mining	212112	Bituminous Coal Underground Mining
H1	1231	Anthracite Mining	212113	Anthracite Mining
H1	1241	Coal Mining Services (except site preparation and related construction activities on a contract basis)	213113	Support Activities for Coal Mining
H1		(site preparation and related construction activities on a contract basis)	238910	Site Preparation Contractors

Sector I. Oil and Gas Extraction	Sector I. Oil and Gas Extraction	Sector I. Oil and Gas Extraction	Sector I. Oil and Gas Extraction	Sector I. Oil and Gas Extraction	Sector I. Oil and Gas Extraction
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
I1	1311	Crude Petroleum and Natural Gas	211111	Crude Petroleum and Natural Gas Extraction
I1	1321	Natural Gas Liquids	211112	Natural Gas Liquid Extraction
I1	1381	Drilling Oil and Gas Wells	213111	Drilling Oil and Gas Wells
I1	1382	Oil and Gas Field Exploration Services	213112	Support Activities for Oil and Gas Operations
I1	1389	Oil and Gas Field Services, Not Elsewhere Classified (except construction of field gathering lines, site preparation and related construction activities performed on a contract or fee basis)	213112	Support Activities for Oil and Gas Operations
I1	1389	(construction of field gathering lines on a contract or fee basis)	237120	Oil and Gas Pipeline and Related Structures Construction
I1	1389	(site preparation and related construction activities on a contract basis)	238910	Site Preparation Contractors

Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
J2	1411	Dimension Stone	212311	Dimension Stone Mining and Quarrying
J2	1422	Crushed and Broken Limestone	212312	Crushed and Broken Limestone Mining and Quarrying
J2	1423	Crushed and Broken Granite	212313	Crushed and Broken Granite Mining and Quarrying
J2	1429	Crushed and Broken Stone, Not Elsewhere Classified	212319	Other Crushed and Broken Stone Mining and Quarrying
J1	1442	Construction Sand and Gravel	212321	Construction Sand and Gravel Mining
J1	1446	Industrial Sand	212322	Industrial Sand Mining
J3	1455	Kaolin and Ball Clay	212324	Kaolin and Ball Clay Mining
J3	1459	Clay, Ceramic, and Refractory Minerals, Not Elsewhere Classified	212325	Clay, Ceramic, and Refractory Minerals Mining
J3	1474	Potash, Soda, and Borate Minerals	212391	Potash, Soda, and Borate Mineral Mining
J3	1475	Phosphate Rock	212392	Phosphate Rock Mining
J3	1479	Chemical and Fertilizer Mineral Mining, Not Elsewhere Classified	212393	Other Chemical and Fertilizer Mineral Mining

Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing	Sector J. Mineral Mining and Dressing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
J2	1481	Nonmetallic Minerals Services, Except Fuels
		(except geophysical surveying and mapping and site preparation and related construction activities performed on a contract or fee basis)	213115	Support Activities for Nonmetallic Minerals (except Fuels)
		(site preparation and related construction activities on a contract basis)	238910	Site Preparation Contractors
	1499	Miscellaneous Nonmetallic Minerals, Except Fuels
		(except bituminous limestone and bituminous sandstone)	212399	All Other Nonmetallic Mineral Mining

Sector K. Hazardous Waste Treatment, Storage or Disposal Facilities	Sector K. Hazardous Waste Treatment, Storage or Disposal Facilities	Sector K. Hazardous Waste Treatment, Storage or Disposal Facilities	Sector K. Hazardous Waste Treatment, Storage or Disposal Facilities
Sub- Sector	Activity Code	Narrative Description	Notes
K1	HZ	• Hazardous waste treatment • Hazardous waste storage • Hazardous waste disposal • Hazardous waste facilities operating under interim status • Hazardous waste facilities operating under a permit under Subtitle C of RCRA	HZ is the Activity Code (i.e., non-SIC / non-NAICS designation) for this Sector. It potentially applies to any facility regardless of SIC / NAICS Code, in addition to these specifically related to hazardous waste: • SIC 4953 Refuse Systems (hazardous waste treatment and disposal); • NAICS 562211 Hazardous Waste Treatment and Disposal; • NAICS 562112 Hazardous Waste Collection (hazardous waste transfer stations).

Sector L. Landfills and Land Application Sites	Sector L. Landfills and Land Application Sites	Sector L. Landfills and Land Application Sites	Sector L. Landfills and Land Application Sites
Sub- Sector	Activity Code	Narrative Description	Notes
L1	LF	• All Landfill, Land Application Sites and OpenDumps	LF is the Activity Code (i.e., non-SIC and non-NAICS designation) for this Sector. It may apply to any facility / SIC Code / NAICS Code, in addition to these specifically related to landfills and landfill application sites: • SIC 4953 Refuse Systems (solid waste landfills); • NAICS 562212 Solid Waste Landfill. Industrial waste is waste from any of the facilities covered by the MSGP (also described in 40 CFR 122.26(b)(14)).
L2	LF	All Landfill, Land Application Sites and Open Dumps, except Municipal Solid Waste Landfill (MSWLF) Areas Closed in Accordance with 40 CFR 258.	LF is the Activity Code (i.e., non-SIC and non-NAICS designation) for this Sector. It may apply to any facility / SIC Code / NAICS Code, in addition to these specifically related to landfills and landfill application sites: • SIC 4953 Refuse Systems (solid waste landfills); • NAICS 562212 Solid Waste Landfill. Industrial waste is waste from any of the facilities covered by the MSGP (also described in 40 CFR 122.26(b)(14)).

Sector M. Automobile Salvage Yards	Sector M. Automobile Salvage Yards	Sector M. Automobile Salvage Yards	Sector M. Automobile Salvage Yards	Sector M. Automobile Salvage Yards	Sector M. Automobile Salvage Yards
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
M1	5015	Motor Vehicle Parts, Used (merchant wholesalers except those selling via retail method)	423140	Motor Vehicle Parts (Used) Merchant Wholesalers

Sector N. Scrap Recycling Facilities	Sector N. Scrap Recycling Facilities	Sector N. Scrap Recycling Facilities	Sector N. Scrap Recycling Facilities	Sector N. Scrap Recycling Facilities	Sector N. Scrap Recycling Facilities
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
N1	5093	Scrap and Waste Materials (merchant wholesalers except Source-Separated Recycling)	423930	Recyclable Material Merchant Wholesalers
N2	5093	Scrap and Waste Materials (Source-Separated Recycling)	423930	Recyclable Material Merchant Wholesalers

Sector O. Steam Electric Generating Facilities	Sector O. Steam Electric Generating Facilities	Sector O. Steam Electric Generating Facilities	Sector O. Steam Electric Generating Facilities
Sub- Sector	Activity Code	Narrative Description	Notes
O1	SE	• steam electric power generation using coal, including coal handling areas • steam electric power generation using natural gas • steam electric power generation using oil • steam electric power generation using nuclearenergy • steam electric power generation using any other fuel to produce a steam source • coal pile runoff (includes effluent limitations established by 40 CFR 423) • dual fuel co-generation (i.e., steam generation using fossil fuel to augment a heat-capture generation system)	SE is the Activity Code (i.e., non-SIC and non-NAICS designation) for this Sector. It may apply to any facility / SIC Code / NAICS Code, in addition to these specifically related to steam electric generation: • SIC 4911 Electric Services (fossil fuel power generation, nuclear electric power generation & other electric power generation) • NAICS 221112 Fossil Fuel Electric Power Generation • NAICS 221113 Nuclear Electric PowerGeneration

Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
P1	4011	Railroads, Line-Haul Operating	482111	Line-Haul Railroads
	4013	Railroad Switching and Terminal Establishments (short line railroads)	482112 488210	Short Line Railroads Support Activities for Rail Transportation
	4111	(except short line railroads) Local and Suburban Transit (mixed mode)	485111	Mixed Mode Transit Systems
		airport transportation service, and bus and motor vehicle) (airport transportation service) Local Passenger Transportation, Not Elsewhere Classified (limousine rental with driver and automobile rental with driver) (employee transportation) (special needs transportation) (hearse rental with driver and carpool and vanpool operation) (sightseeing buses and cable and cog	485119 485999 485320 485410 485991 485999 487110 621910 485310	Other Urban Transit Systems All Other Transit and Ground Passenger Transportation Limousine Service School and Employee Bus Transportation Special Needs Transportation All Other Transit and Ground Passenger Transportation Scenic and Sightseeing Transportation, Land Ambulance Services Taxi Service Interurban and Rural Bus Transportation Charter Bus Industry
		railways, except scenic) (land ambulance)	485210 485510 485510	Charter Bus Industry
		Refrigerated Warehousing and Storage General Warehousing and Storage Intercity and Rural Bus Transportation Bus Charter Service Charter Service, Except Local	485410 488490	Other Support Activities for Road Transportation
		Buses Terminal and Service Facilities for Vehicle Passenger
		Trucking Without Storage
	4119 4121	Taxicabs Farm Product Warehousing and Storage (general freight)		General Freight Trucking, Local
	4221 4222	Local
	4225	Motor Transportation
	4131 4141 4142	Local Bus School		School and Employee Bus Transportation
	4151
	4173
			484110
	4212		484210
		(household goods moving)
				Used Household and Office Goods Moving

Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation	Sector P. Land Transportation
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(specialized freight)	484220	Specialized Freight (except Used Goods) Trucking, Local
		(solid waste collection without disposal)	562111	Solid Waste Collection
		(hazardous waste collection without disposal)	562112	Hazardous Waste Collection
		(other waste collection without disposal)	562119	Other Waste Collection
	4213	Trucking, Except Local
		(general freight, truckload)	484121	General Freight Trucking, Long-Distance, Truckload
		(general freight, less than truckload)	484122	General Freight Trucking, Long-Distance, Less Than Truckload
		(household goods moving)	484210	Used Household and Office Goods Moving
		(specialized freight)	484230	Specialized Freight (except Used Goods) Trucking, Long-Distance
	4214	Local Trucking With Storage (general freight)	484110	General Freight Trucking, Local
		(household goods moving)	484210	Used Household and Office Goods Moving
		(specialized freight)	484220	Specialized Freight (except Used Goods) Trucking, Local
	4215	Courier Services, Except by Air (hub and spoke intercity delivery)	492110	Couriers
		(local delivery)	492210	Local Messengers and local Delivery
	4226	Special Warehousing and Storage, Not Elsewhere Classified (warehousing in foreign trade zones)	493110	General Warehousing and Storage
		(fur storage)	493120	Refrigerated Warehousing and Storage
		(except fur storage and warehousing in foreign trade zones)	493190	Other Warehousing and Storage
	4231	Terminal and Joint Terminal Maintenance Facilities for Motor Freight Transportation	488490	Other Support Activities for Road Transportation
	4311	United States Postal Service	491110	Postal Service
	5171	Petroleum Bulk Stations and Terminals (except petroleum sold via retail method)	424710	Petroleum Bulk Stations and Terminals
		(heating oil sold to final consumer)	454311	Heating Oil Dealers
		(LP gas sold to final consumer)	454312	Liquefied Petroleum Gas (Bottled Gas) Dealers

Sector Q. Water Transportation	Sector Q. Water Transportation	Sector Q. Water Transportation	Sector Q. Water Transportation	Sector Q. Water Transportation	Sector Q. Water Transportation
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
Q1	4412	Deep Sea Foreign Transportation of Freight	483111	Deep Sea Freight Transportation
Q1	4424	Deep Sea Domestic Transportation of Freight	483113	Coastal and Great Lakes Freight Transportation
Q1	4432	Freight Transportation on the Great Lakes - St. Lawrence Seaway	483113	Coastal and Great Lakes Freight Transportation
Q1	4449	Water Transportation of Freight, Not Elsewhere Classified	483211	Inland Water Freight Transportation
Q1	4481	Deep Sea Transportation of Passengers, Except by Ferry (deep sea activities)	483112	Deep Sea Passenger Transportation
Q1		(coastal activities)	483114	Coastal and Great Lakes Passenger Transportation
Q1	4482	Ferries (coastal and Great Lakes)	483114	Coastal and Great Lakes Passenger Transportation
Q1		(inland)	483212	Inland Water Passenger Transportation
	4489	Water Transportation of Passengers, Not Elsewhere Classified (water taxis)	483212	Inland Water Passenger Transportation
		(airboats, excursion boats, and sightseeing boats)	487210	Scenic and Sightseeing Transportation, Water
	4491	Marine Cargo Handling (dock and pier operations)	488310 488320	Port and Harbor Operations
		(all but dock and pier operations)		Marine Cargo Handling
	4492	Towing and Tugboat Services	488330	Navigational Services to Shipping
	4493	Marinas	713930	Marinas
	4499	Water Transportation Services, Not Elsewhere Classified (lighterage)	483211	Inland Water Freight Transportation
		(lighthouse and canal operations)	488310	Port and Harbor Operations
		(piloting vessels in and out of harbors and marine salvage)	488330	Navigational Services to Shipping
		(all but lighthouse operations, piloting vessels in and out of harbors, boat and ship rental, marine salvage, lighterage, marine surveyor services, and canal operations)	488390	Other Support Activities for Water Transportation
		(boat and ship rental, commercial)	532411	Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing

Sector R. Ship and Boat Building and Repair Yards	Sector R. Ship and Boat Building and Repair Yards	Sector R. Ship and Boat Building and Repair Yards	Sector R. Ship and Boat Building and Repair Yards	Sector R. Ship and Boat Building and Repair Yards	Sector R. Ship and Boat Building and Repair Yards
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
R1	3731	Ship Building and Repairing (except repairs in floating drydocks)	336611	Ship Building and Repairing
		(repair services provided by floating drydocks)	488390	Other Support Activities for Water Transportation (includes ship scaling facilities)
	3732	Boat Building and Repairing (boat building)	336612	Boat Building
		(pleasure boat repair and maintenance services without retailing new boats)	811490	Other Personal and Household Goods Repair and Maintenance
		(ship scaling)	488390	Other Support Activities for Water Transportation (drydocks, floating [i.e., routine repair and maintenance of ships]; other support activities for water transportation; ship dismantling at floating drydock; ship scaling services not done at a shipyard)
		(motorboat [i.e., inboard and outboard] repair and maintenance services; outboard motor repair shops)	811490	Other Personal and Household Goods Repair and Maintenance

Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
S1	4512	Air Transportation, Scheduled (passenger)	481111	Scheduled Passenger Air Transportation
		(freight)	481112	Scheduled Freight Air Transportation
	4513	Air Courier Services	492110	Couriers
	4522	Air Transportation, Nonscheduled (passenger)	481211	Nonscheduled Chartered Passenger Air Transportation
		(freight)	481212	Nonscheduled Chartered Freight Air Transportation

Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities	Sector S. Air Transportation Facilities
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(using general purpose aircraft for a variety of passenger, freight, courier, and other uses)	481219	Other Nonscheduled Air Transportation
		(sightseeing planes)	487990	Scenic and Sightseeing Transportation, Other
		(air ambulance)	621910	Ambulance Services
	4581	Airports, Flying Fields, and Airport Terminal Services (air freight handling at airports, hangar operations, airport terminal services, aircraft storage, airports, and flying fields)	488119	Other Airport Operations
		(aircraft servicing and repairing)	488190	Other Support Activities for Air Transportation

Sector T. Treatment Works	Sector T. Treatment Works	Sector T. Treatment Works	Sector T. Treatment Works
Sub- sector	Activity Code	Narrative Description	Notes
T1	TW	• treatment works with a design flow of 1.0 MGD or more treating domestic sewage or any other sewage sludge; • wastewater treatment devices or system used by the treatment works for the storage, treatment, recycling and reclamation of municipal or domestic sewage; • land located within the confines of the treatment works that is dedicated to the disposal of sewage sludge; • treatment works required to have an approved pretreatment program under 40 CFR Part 403	TW is the Activity Code (i.e., non-SIC and non-NAICS designation) for this Sector. It may apply to any facility / SIC Code / NAICS Code, in addition to these specifically related to treatment works: • SIC 4952 Sewerage Systems • NAICS 221320 Sewage Treatment Facilities

Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
U3	2011	Meat Packing Plants	311611	Animal (except Poultry) Slaughtering
	2013	Sausages and Other Prepared Meat Products (except lard made from purchased materials)	311612	Meat Processed from Carcasses
		(lard made from purchased materials)	311613	Rendering and Meat Byproduct Processing
	2015	Poultry Slaughtering and Processing (poultry slaughtering and processing)	311615	Poultry Processing
		(egg processing)	311999	All Other Miscellaneous Food Manufacturing
	2021	Creamery Butter	311512	Creamery Butter Manufacturing
	2022	Natural, Processed, and Imitation Cheese	311513	Cheese Manufacturing
	2023	Dry, Condensed and Evaporated Dairy Products (liquid non-dairy creamer)	311511	Fluid Milk Manufacturing
		(except liquid non-dairy creamer)	311514	Dry, Condensed, and Evaporated Dairy Product Manufacturing
	2024	Ice Cream and Frozen Deserts	311520	Ice Cream and Frozen Desert Manufacturing
	2026	Fluid Milk (except ultra-high temperature)	311511	Fluid Milk Manufacturing
		(ultra-high temperature)	311514	Dry, Condensed, and Evaporated Dairy Product Manufacturing
	2032	Canned Specialties (except canned puddings)	311422	Specialty Canning
		(canned puddings)	311999	All Other Miscellaneous Food Manufacturing
	2033	Canned Fruits, Vegetables, Preserves, Jams, and Jellies	311421	Fruit and Vegetable Canning
	2034	Dried and Dehydrated Fruits, Vegetables and Soup Mixes (vegetable flour)	311211	Flour Milling
		(except vegetable flour and soup mixes made from purchased dried and dehydrated ingredients)	311423	Dried and Dehydrated Food Manufacturing
		(soup mixes made from purchased dehydrated ingredients)	311999	All Other Miscellaneous Food Manufacturing
	2035	Pickled Fruits and Vegetables, Vegetable Sauces and Seasonings, and Salad Dressings (pickled fruits and vegetables)	311421	Fruit and Vegetable Canning
		(sauces and salad dressings)	311941	Mayonnaise, Dressing, and Other Prepared Sauce Manufacturing

Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	2037	Frozen Fruits, Fruit Juices, and Vegetables	311411	Frozen Fruit, Juice, and Vegetable Manufacturing
	2038	Frozen Specialties, Not Elsewhere Classified	311412	Frozen Specialty Food Manufacturing
U1	2041	Flour and Other Grain Mill Products	311211	Flour Milling
	2043	Cereal Breakfast Foods (cereal breakfast foods and related preparations except grain based coffee substitutes)	311230	Breakfast Cereal Manufacturing
		(grain based coffee substitutes)	311920	Coffee and Tea Manufacturing
	2044	Rice Milling	311212	Rice Milling
	2045	Prepared Flour Mixes and Doughs	311822	Flour Mixes and Dough Manufacturing from Purchased Flour
	2046	Wet Corn Milling (except refining purchased corn oil)	311221	Wet Corn Milling
		(refining purchased corn oil)	311225	Fats and Oils Refining and Blending
	2047	Dog and Cat Food	311111	Dog and Cat Food Manufacturing
	2048	Cats (except slaughtering animals for pet food)	311119	Other Animal Food Manufacturing
		(slaughtering animals for pet food)	311611	Animal (except Poultry) Slaughtering
U3	2051	Bread and Other Bakery Products, Except Cookies and Crackers	311812	Commercial Bakeries
U3	2052	Cookies and Crackers (unleavened bread and soft pretzels)	311812	Commercial Bakeries
U3		(except unleavened bread and pretzels)	311821	Cookie and Cracker Manufacturing
U3		(hard pretzels and snack pretzels, except soft)	311919	Other Snack Food Manufacturing (pretzels, except soft)
U3	2053	Frozen Bakery Products, Except Bread	311813	Frozen Cakes, Pies, and Other Pastries Manufacturing
U3	2061	Cane Sugar, Except Refining	311311	Sugarcane Mills
U3	2062	Cane Sugar Refining	311312	Cane Sugar Refining
U3	2063	Beet Sugar	311313	Beet Sugar Manufacturing
U3	2064	Candy and Other Confectionery Products (chocolate confectionery)	311330	Confectionery Manufacturing from Purchased Chocolate
U3		(nonchocolate confectionery)	311340	Nonchocolate Confectionery Manufacturing

Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	2066	Chocolate and Cocoa Products	311320	Chocolate and Confectionery Manufacturing
		(except chocolate products, made from purchased chocolate)		from Cacao Beans
		(chocolate products made from purchased chocolate)	311330	Confectionery Manufacturing from Purchased Chocolate
	2067	Chewing Gum	311340	Nonchocolate Confectionery Manufacturing
	2068	Salted and Roasted Nuts and Seeds	311911	Roasted Nuts and Peanut Butter Manufacturing
U2	2074	Cottonseed Oil Mills
		(cottonseed processing) (processing purchased cottonseed oil)	311223 311225	Other Oilseed Processing
	2075	Soybean Oil Mills (soybean processing, except edible
			311222	Soybean Processing
				Fats and Oils Refining and Blending
		soybean oil) (processing purchased soybean oil)	311225	Fats and Oils Refining and Blending
	2076	Vegetable Oil Mills, Except Corn, Cottonseed, and Soybean
		(oilseed processing) (processing purchased vegetable and	311223 311225	Other Oilseed Processing Fats and Oils Refining and Blending
	2077	Animal and Marine Fats and Oils
		(animal fats and oils) (canned marine fats and oils)	311613	Rendering and Meat Byproduct Processing
		(fresh and frozen marine fats and oils)	311711 311712	Seafood Canning Fresh and Frozen Seafood Processing
	2079	Shortening, Table Oils, Margarine, and Other Edible Fats and Oils, Not Elsewhere Classified
		(processing soybean oil into edible cooking oils from soybeans crushed in the same establishment) (processing vegetable oils, except	311222	Soybean Processing
		the same establishment) (except processing vegetable and soybean oils into edible oils from oilseeds and vegetables crushed in the same establishment)	311225	Fats and Oils Refining and Blending
U3	2082	Malt Beverages
		(malt extract)	311942	Spice and Extract Manufacturing
		(except malt extract)	312120	Breweries
	2083	Malt	311213	Malt Manufacturing

Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector	2084	Wines, Brandy and Brandy Spirits	312130	Wineries
	2085	Distilled and Blended Liquors (apple jack)	312130 312140	Wineries Distilleries
	2086	(except apple jack) Bottled and Canned Soft Drinks and Carbonated Water (except bottled water) (bottled water)	312111 312112	Soft Drink Manufacturing Bottled Water Manufacturing
	2087	Flavoring Extracts and Flavoring Syrups, Not Elsewhere Classified (coffee flavoring and syrups) (flavoring syrups and concentrates except coffee) (flavoring extracts and natural food colorings)	311920 311930 311942	Coffee and Tea Manufacturing Flavoring Syrup and Concentrate Manufacturing Spice and Extract Manufacturing
	2091	Canned and Cured Fish and Seafoods Prepared Fresh or Frozen Fish and	311711 311712	Seafood Canning Fresh and Frozen Seafood Processing
	2092 2095 2096	Seafoods Roasted Coffee Potato Chips, Corn Chips, and Similar Snacks	311920	Coffee and Tea Manufacturing Other Snack Food Manufacturing
		Ice	311919 312113 311823	Ice manufacturing
	2097	Maufactured Macaroni, Spaghetti, Vermicelli, and
	2099	Preparations, Not Elsewhere (rice, uncooked and packaged with other ingredients made in rice mills)	311212 311340	Dry Pasta Manufacturing Nonchocolate Confectionery Manufacturing
	2098	Noodles Food Classified		Rice Milling
		(marshmallow creme) (bouillon and potatoes dried and packaged with other ingredients produced in dehydrating plants)	311823 311830 311911	Dried and Dehydrated Food Manufacturing Dry Pasta Manufacturing Tortilla Manufacturing Roasted Nuts and Peanut Butter Manufacturing
		(dry pasta packaged with other ingredients made in dry pasta plants) (tortillas)	311423
		(peanut butter)
		(tea)	311920	Coffee and Tea Manufacturing
		(vinegar, prepared dip)	311941	Mayonnaise, Dressing, and Other Prepared Sauce Manufacturing

Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products	Sector U. Food and Kindred Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(spices, dry dip mix, dry salad dressing mix, and seasoning mix)	311942	Spice and Extract Manufacturing
		(perishable prepared food)	311991	Perishable Prepared Food Manufacturing
		(except bouillon, marshmallow creme, spices, peanut butter, perishable prepared foods, tortillas, tea and tea extracts, dry dip mix, prepared dips, dry salad dressing mix, seasoning mix, dried potatoes, pasta, and rice mixed with other ingredients in mills or dehydrating plants, reducing maple sap to maple syrup, wool grease, and vinegar)	311999	All Other Miscellaneous Food Manufacturing
	2111	Cigarettes	312221	Cigarette Manufacturing
	2121	Cigars	312229	Other Tobacco Product Manufacturing
	2131	Chewing and Smoking Tobacco and Snuff	312229	Other Tobacco Product Manufacturing
	2141	Tobacco Stemming and Redrying (stemming and redrying tobacco)	312210	Tobacco Stemming and Redrying
		(reconstituted tobacco)	312229	Other Tobacco Product Manufacturing

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
V1	2211	Broadwoven Fabric Mills, Cotton	313210	Broadwoven Fabric Mills
	2221	Broadwoven Fabric Mills, Manmade Fiber and Silk	313210	Broadwoven Fabric Mills
	2231	Broadwoven Fabric Mills, Wool (Including Dyeing and Finishing) (except finishing wool fabric without weaving wool fabric)	313210	Broadwoven Fabric Mills 2231
		(wool broadwoven fabric finishing without weaving fabric)	313311	Broadwoven Fabric Finishing Mills
		(wool fabric, except broadwoven, finishing without weaving fabric)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
	2241	Narrow Fabric and Other Smallwares Mills: Cotton, Wool, Silk and Manmade Fiber	313221	Narrow Fabric Mills
	2251	Women's Full-Length and Knee- Length Hosiery, Except Socks	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(dyeing and finishing sheer hosiery without knitting sheer hosiery)
		(except dyeing and finishing sheer hosiery without knitting sheer hosiery)	315111	Sheer Hosiery Mills
	2252	Hosiery, Not Elsewhere Classified (dyeing and finishing hosiery , except sheer, without knitting hosiery)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
		(girls' full length and knee length sheer hosiery)	315111	Sheer Hosiery Mills
		(except girls' full-length and knee- length sheer hosiery and dyeing and finishing hosiery without knitting hosiery)	315119	Other Hosiery and Sock Mills
	2253	Knit Outerwear Mills (dyeing and finishing knit outerwear without knitting outerwear)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
		(except bath and lounging robes and dying and finish without knitting garments)	315191	Outerwear Knitting Mills
		(knitting bath or lounging robes)	315192	Underwear and Nightwear Knitting Mills
	2254	Knit Underwear and Nightwear Mills (dyeing and finishing underwear and nightwear without knitting garments)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
		(except dyeing and finishing underwear and nightwear without knitting garments)	315192	Underwear and Nightwear Knitting Mills
	2257	Weft Knit Fabric Mills (except finishing without knitting weft	313241	Weft Knit Fabric Mills
		fabric) (finishing weft fabric without knitting weft fabric)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
	2258	Weft Knit Fabric Mills (except finishing without knitting weft fabric)	313241	Weft Knit Fabric Mills
		(finishing weft fabric without knitting weft fabric)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
	2259	Knitting Mills, Not Elsewhere Classified (knitting weft fabric and fabricating textile products, such as bedspreads, curtains, or towels)	313241	Weft Knit Fabric Mills

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(knitting lace or warp fabric and fabricating textile products, such as bedspreads, curtains, or towels)	313249	Other Knit Fabric and Lace Mills
		(dyeing and finishing knit gloves and mittens without knitting gloves or mittens)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
		(knitting gloves and mittens)	315191	Outerwear Knitting Mills
		(knitting girdles and allied foundation garments)	315192	Underwear and Nightwear Knitting Mills
	2261	Finishers of Broadwoven Fabrics of Cotton	313311	Broadwoven Fabric Finishing Mills
	2262	Finishers of Broadwoven Fabrics of Manmade Fibers and Silk	313311	Broadwoven Fabric Finishing Mills
	2269	Finishers of Textiles, Not Elsewhere Classified (linen fabric finishing)	313311	Broadwoven Fabric Finishing Mills
		(except linen fabric finishing)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
	2273	Carpets and Rugs	314110	Carpet and Rug Mills
	2281	Yarn Spinning Mills	313111	Yarn Spinning Mills
	2282	Yarn Texturizing, Throwing, Twisting and Spinning Mills	313112	Yarn Texturizing, Throwing, Twisting Mills
	2284	Thread Mills (except finishing thread without manufacturing thread)	313113	Thread Mills
		(finishing thread without manufacturing thread)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
	2295	Coated Fabrics, Not Rubberized	313320	Fabric Coating Mills
	2296	Tire Cord and Fabrics	314992	Tire Cord and Tire fabric Mills
	2297	Nonwoven Fabrics	313230	Nonwoven Fabric Mills
	2298	Cordage and Twine (hemp rope made in spinning mills)	313111	Yarn Spinning Mills
		(except hemp rope made in spinning mills)	314991	Rope, Cordage, and Twine Mills
	2299	Textile Goods, Not Elsewhere Classified
		(hemp bags made in spinning mills, & spinning yarn of flax, hemp, jute, and ramie)	313111	Yarn Spinning Mills
		(manufacturing thread of hemp, linen, and ramie)	313113	Thread Mills

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(broadwoven fabrics of jute, linen, hemp, and ramie and hand woven fabrics)	313210	Broadwoven Fabric Mills
		(narrow woven fabric of jute, linen, hemp, and ramie)	313221	Narrow Fabric Mills
		(nonwoven felt)	313230	Nonwoven Fabric Mills
		(finishing hard fiber thread and yarn without manufacturing thread or yarn)	313312	Textile and Fabric Finishing (except Broadwoven Fabric) Mills
		(manufacturing other textile products)	314999	All Other Miscellaneous Textile Product Mills
	2311	Men's and Boys' Suits, Coats, and Overcoats	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(contractors)
		(except contractors)	315222	Men's and Boys' Cut and Sew Suit, Coat and Overcoat Manufacturing
	2321	Men's and Boys' Shirts, Except Work Shirts	315211	Men's and Boys' Cut and Sew Apparel
		(contractors)		Contractors
		(except contractors)	315223	Men's and Boys' Cut and Sew Shirt (except Work Shirt) Manufacturing
	2322	Men's and Boys' Underwear and Nightwear		Men's and Boys' Cut and Sew Apparel
		(contractors)	315211	Contractors
		(except contractors)	315221	Men's and Boys' Cut and Sew Underwear and Nightwear Manufacturing
	2323	Men's and Boys' Neckwear
		(contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(except contractors)	315993	Men's and Boys' Neckwear Manufacturing
	2325	Men's and Boys' Separate Trousers and Slacks		Men's and Boys' Cut and Sew Apparel
		(contractors) (except contractors)	315211 315224	Contractors Men's and Boys' Cut and Sew Trouser, Slack and Jean Manufacturing
	2326	Men's and Boys' Work Clothing
		(contractors) (except contractors)	315211 315225	Men's and Boys' Cut and Sew Apparel Contractors Men's and Boys' Cut and Sew Work Clothing

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	2329	Men's and Boys' Clothing, Not Elsewhere Classified (contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(except team athletic uniforms and contractors)	315228	Men's and Boys' Cut and Sew Other Outerwear Manufacturing
		(team athletic uniforms except contractors)	315299	All Other Cut and Sew Apparel Manufacturing
	2331	Women's, Misses', and Juniors' Blouses and Shirts
		(contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except contractors)	315232	Women's and Girls' Cut and Sew Blouse and Shirt Manufacturing
	2335	Women's, Misses', and Juniors' Dresses
		(contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except contractors)	315233	Women's and Girls' Cut and Sew Dress Manufacturing
	2337	Women's, Misses', and Juniors' Suits, Skirts, and Coats
		(contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except contractors)	315234	Women's and Girls' Cut and Sew Suit, Coat, Tailored Jacket, and Skirt Manufacturing
	2339	Women's, Misses', and Juniors' Outerwear, Not Elsewhere Classified
		(contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except team athletic uniforms, scarves, and contractors)	315239	Women's and Girls' Cut and Sew Other Outerwear Manufacturing
		(team athletic uniforms except contractors)	315299	All Other Cut and Sew Apparel Manufacturing
		(scarves except contractors)	315999	Other Apparel Accessories and Other Apparel Manufacturing
	2341	Women's, Misses', Children's, and Infants' Underwear and Nightwear
		(boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(boys' except contractors)	315221	Men's and Boys' Cut and Sew Underwear and Nightwear Manufacturing
		(women and girls' except contractors)	315231	Women's and Girls' Cut and Sew Lingerie, Loungewear, and Nightwear Manufacturing
		(infants' except contractors)	315291	Infants' Cut and Sew Apparel Manufacturing
	2342	Brassieres, Girdles, and Allied Garments
		(contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except contractors)	315231	Women's and Girls' Cut and Sew Lingerie, Loungewear, and Nightwear Manufacturing
	2353	Hats, Caps, and Millinery (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except contractors)	315991	Hat, Cap, and Millinery Manufacturing
	2361	Girls', Children's, and Infants' Dresses, Blouses, and Shirts
		(boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(girls' and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(boys' shirts except contractors)	315223	Men's and Boys' Cut and Sew Shirt (except Work Shirt) Manufacturing
		(girls' blouses and shirts except contractors)	315232	Women's and Girls' Cut and Sew Blouse and Shirt Manufacturing
		(girls' dresses except contractors)	315233	Women's and Girls' Cut and Sew Dress Manufacturing
		(infants' except contractors)	315291	Infants' Cut and Sew Apparel Manufacturing
	2369	Girls', Children's, and Infants' Outerwear, Not Elsewhere Classified
		(boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(girls' and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(boys' robes except contractors)	315221	Men's and Boys' Cut and Sew Underwear and Nightwear Manufacturing
		(boys' suits and coats except contractors)	315222	Men's and Boys' Cut and Sew Suit, Coat, and Overcoat Manufacturing
		(boys' trousers, slacks, and jeans except contractors)	315224	Men's and Boys' Cut and Sew Trouser, Slack and Jean Manufacturing

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	Notes
	(boys' other outerwear except contractors)	315228	Men's and Boys' Cut and Sew Other Outerwear Manufacturing Women's and Girls' Cut and Sew Lingerie, Loungewear, and Nightwear Manufacturing Women's and Girls' Cut and Sew Suit, Coat, Tailored Jacket, and Skirt Manufacturing Women's and Girls' Cut and Sew Other Outerwear Manufacturing Infants' Cut and Sew Apparel Manufacturing
	(girls' robes except contractors)	315231
	(girls' suits, coats, jackets, and skirts except contractors)	315234
	(girls' other outerwear except contractors)	315239
	(infants' except contractors)	315291
	Fur Goods (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	(except contractors)	315292	Fur and Leather Apparel Manufacturing
	Dress and Work Gloves, Except Knit and All-Leather (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	(except contractors)	315992	Glove and Mitten Manufacturing
	Robes and Dressing Gowns (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	(men's except contractors)	315221	Men's and Boys' Cut and Sew Underwear and Nightwear Manufacturing
	(women's except contractors)	315231	Women's and Girls' Cut and Sew Lingerie, Loungewear, and Nightwear Manufacturing
	Waterproof Outerwear (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants'	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	contractors) (men's and boys' water resistant or water repellent tailored overcoats, except made from rubberized fabric, plastics, etc. and contractors)	315222	Men's and Boys' Cut and Sew Suit, Coat, and Overcoat Manufacturing

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	NAICS Codes	NAICS Codes	Notes
	(men's and boys' water resistant or water repellent nontailored outerwear, except made from rubberized fabric, plastics, etc. and contractors)	315228	Men's and Boys' Cut and Sew Other Outerwear Manufacturing
	(women's and girls' water resistant or water repellent tailored coats, except made from rubberized fabric, plastics, etc. and contractors)	315234	Women's and Girls' Cut and Sew Suit, Coat, Tailored Jacket, and Skirt Manufacturing"
	(other women's and girls' water resistant or water repellent nontailored outerwear, except made from rubberized fabric, plastics, etc. and contractors)	315239	Women's and Girls' Cut and Sew Other Outerwear Manufacturing
	(infants' waterproof outerwear made from rubberized fabric, plastics, etc. except contractors)	315291	Infants' Cut and Sew Apparel Manufacturing
	(men's, boys', women's, and girls' waterproof outerwear made from rubberized fabric, plastics, etc. except contractors)	315299	All Other Cut and Sew Apparel Manufacturing
	(accessories, such as aprons, bibs, and other miscellaneous waterproof items, made from rubberized fabric, plastics, etc. except contractors)	315999	Other Apparel Accessories and Other Apparel Manufacturing
	Leather and Sheep-Lined Clothing (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	(except contractors)	315292	Fur and Leather Apparel Manufacturing
	Apparel Belts (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	(except contractors)	315999	Other Apparel Accessories and Other Apparel Manufacturing
	Apparel and Accessories, Not Elsewhere Classified (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
	(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(garters and garter belts except contractors)	315231	Women's and Girls' Cut and Sew Lingerie, Loungewear, and Nightwear Manufacturing
		(apparel, such as academic gowns, clerical outerwear, and band uniforms, except contractors)	315299	All Other Cut and Sew Apparel Manufacturing
		(accessories such as, handkerchiefs, arm bands, cummerbunds, suspenders, etc., except contractors)	315999	Other Apparel Accessories and Other Apparel Manufacturing
	2391	Curtains and Draperies	314121	Curtain and Drapery Mills
	2392	Housefurnishings, Except Curtains and Draperies (except mops, dust rags, and bags)	314129	Other Household Textile Product Mills
		(blanket, laundry, and wardrobe bags)	314911	Textile Bag Mills
		(dust rags)	314999	All Other Miscellaneous Textile Product Mills
		(floor and dust mops)	339994	Broom, Brush, and Mop Manufacturing
	2393	Textile Bags	314911	Textile Bag Mills
	2394	Canvas and Related Products	314912	Canvas and Related Product Mills
	2395	Pleating, Decorative and Novelty Stitching, and Tucking for the Trade (except apparel contractors)	314999	All Other Miscellaneous Textile Product Mills
		(men's and boy's apparel contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(women's, girls', and infants' apparel contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
	2396	Automotive Trimmings, Apparel Findings, and Related Products (textile products except automotive and apparel trimmings and findings, printing or embossing on apparel, and contractors)	314999	All Other Miscellaneous Textile Product Mills
		(men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(apparel findings and trimmings, except contractors)	315999	Other Apparel Accessories and Other Apparel Manufacturing
		(printing and embossing on fabric	323113	Commercial Screen Printing
		articles) (textile motor vehicle trimming except contractors)	336360	Motor Vehicle Seating and Interior Trim Manufacturing
	2397	Schiffli Machine Embroideries	313222	Schiffli Machine Embroidery

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	2399	Fabricated Textile Products, Not Elsewhere Classified (except apparel and accessories, automotive seat belts, seat and tire covers, and contractors)	314999	All Other Miscellaneous Textile Product Mills
		(men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(apparel and apparel accessories, except contractors)	315999	Other Apparel Accessories and Other Apparel Manufacturing
		(seat belts, and seat and tire covers)	336360	Motor Vehicle Seating and Interior Trim Manufacturing
	3131	Boot and Shoe Cut Stock and Findings (except wood heels and metal buckles)	316999	All Other Leather Good Manufacturing
		(heels, boot and shoe, finished wood, manufacturing)	321999	All Other Miscellaneous Wood Product Manufacturing	A facility with the primary activity of NAICS 321999 'heels, boot and shoe, finished wood, manufacturing' can be regulated under Sector A or Sector V. Sector A requires additional technology- based effluent limits comprising good housekeeping; additional SWPPP requirements; additional inspection requirements; and benchmark monitoring for COD and TSS. Sector V requires additional technology-based effluent limits comprised of good housekeeping measures and employee training; additional SWPPP requirements; and additional inspection requirements. Regulatory burden would likely be greater under Sector A.

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(metal buckles)	339993	Fastener, Button, Needle, and Pin Manufacturing	Any facility whose primary activity is manufacturing metal buckles (SIC 3131 / NAICS 339993) should be regulated under Sector Y, but may continue to be regulated under Sector V, or alternatively, under Sector AD. Sector Y does not apply additional sector-specific requirements to metal buckle manufacturers. Sector V applies additional technology-based limitations comprised of good housekeeping measures for material storage areas and employee training. Under Sector AD EPA could establish additional facility- specific monitoring and reporting requirements. Regulatory burden would likely be greater under Sector V.
	3142	House Slippers	316212	House Slipper Manufacturing
	3143	Men's Footwear, Except Athletic	316213	Men's Footwear (except Athletic) Manufacturing
	3144	Women's Footwear, Except Athletic	316214	Women's Footwear (except Athletic) Manufacturing
	3149	Footwear, Except Rubber, Not Elsewhere Classified	316219	Other Footwear Manufacturing
	3151	Leather Gloves and Mittens (men's and boys' contractors)	315211	Men's and Boys' Cut and Sew Apparel Contractors
		(women's, girls', and infants' contractors)	315212	Women's, Girls', and Infants' Cut and Sew Apparel Contractors
		(except contractors)	315992	Glove and Mitten Manufacturing
	3161	Luggage	316991	Luggage Manufacturing
	3171	Women's Handbags and Purses	316992	Women's Handbag and Purse Manufacturing
	3172	Personal Leather Goods, Except Women's Handbags and Purses (except nonprecious metal personal goods, such as card cases, cigar cases, and comb cases)	316993	Personal Leather Good (except Women's Handbag and Purse) Manufacturing

Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing	Sector V. Textile Mills, Apparel, and Other Fabric Product Manufacturing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(nonprecious metal personal goods, such as card cases, cigar cases, and comb cases)	339914	Costume Jewelry and Novelty Manufacturing	Any facility whose primary activity is manufacturing nonprecious metal personal goods, such as card cases, cigar cases, and comb cases (SIC 3172 / NAICS 339914) should be regulated under Sector Y, but may continue to be regulated under Sector V, or alternatively, under Sector AD. Sector Y does not apply additional sector-specific requirements to metal buckle manufacturers. Sector V applies additional technology-based limitations comprised of good
					housekeeping measures for material storage areas and employee training. Under Sector AD EPA could establish additional facility-specific monitoring and reporting requirements. Regulatory burden would likely be greater under Sector V.
	3199	Leather Goods, Not Elsewhere Classified	316999	All Other Leather Good Manufacturing

Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
W1	2434	Wood Kitchen Cabinets	337110	Wood Kitchen Cabinet and Countertop Manufacturing
	2511	Wood Household Furniture, Except Upholstered (except wood box spring frames)	337122	Nonupholstered Wood Household Furniture Manufacturing
		(wood box spring frames (parts))	337215	Showcase, Partition, Shelving, and Locker Manufacturing
	2512	Wood Household Furniture, Upholstered	337121	Upholstered Household Furniture Manufacturing
	2514	Metal Household Furniture (upholstered)	337121	Upholstered Household Furniture Manufacturing
		(except upholstered metal furniture and metal box spring frames)	337124	Metal Household Furniture Manufacturing

Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures	Sector W. Furniture and Fixtures
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector	(metal box spring frames)	(metal box spring frames)	337215	Showcase, Partition, Shelving, and Locker Manufacturing
sector	2515	Mattresses, Foundations, and Convertible Beds (convertible beds)	337121	Upholstered Household Furniture Manufacturing
sector		(mattresses and foundations)	337910	Mattress Manufacturing
sector	2517	Wood, Television, Radio, Phonograph, and Sewing Machine Cabinets	337129	Wood, Television, Radio, Phonograph, and Sewing Machine Cabinet Manufacturing
sector	2519	Household Furniture, Not Elsewhere Classified	337125	Household Furniture (except Wood and Metal) Manufacturing
sector	2521	Wood Office Furniture	337211	Wood Office Furniture Manufacturing
sector	2522	Office Furniture, Except Wood	337214	Office Furniture (Except Wood) Manufacturing
sector	2531	Public Building and Related Furniture (seats for motor vehicles)	336360	Motor Vehicle Seating and Interior Trim Manufacturing
sector		(except motor vehicle seats and blackboards)	337127	Institutional Furniture Manufacturing
sector		(blackboards)	339942	Lead Pencil and Art Good Manufacturing
sector	2541	Wood Office and Store Fixtures, Partitions, Shelving, and Lockers (counter tops)	337110	Wood Kitchen Cabinet and Countertop Manufacturing
sector		(wood lunchroom tables and chairs)	337127	Institutional Furniture Manufacturing
sector		(custom architectural millwork)	337212	Custom Architectural Woodwork and Millwork Manufacturing
sector		(except custom architectural millwork, counter tops, and lunchroom tables and chairs)	337215	Showcase, Partition, Shelving, and Locker Manufacturing
sector	2542	Office and Store Fixtures, Partitions, Shelving, and Lockers, Except Wood (lunchroom tables and chairs)	337127	Institutional Furniture Manufacturing
sector		(except lunchroom tables and chairs)	337215	Showcase, Partition, Shelving, and Locker Manufacturing
sector	2591	Drapery Hardware and Window Blinds and Shades	337920	Blind and Shade Manufacturing
sector	2599	Furniture and Fixtures, Not Elsewhere Classified (except hospital beds)	337127	Institutional Furniture Manufacturing
sector		(hospital beds)	339111	Laboratory Apparatus and Furniture Manufacturing

Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
X1	2711	Newspapers: Publishing, or Publishing and Printing (except Internet newspaper publishing)	511110	Newspaper Publishers
	2721	Periodicals: Publishing, or Publishing and Printing (except Internet periodical publishing)	511120	Periodical Publishers
	2731	Books: Publishing, or Publishing and Printing (except Internet book publishing)	511130	Book Publishers
		(except music books) books)
		(music	512230	Music Publishers
	2732	Book Printing	323117	Book Printing
	2741	Miscellaneous Publishing (except Internet publishers) (shopping news and advertising periodical publishing or publishing and printing except Internet)	511120	Periodical Publishers
		(technical manuals and books publishing or publishing and printing, except Internet)	511130	Book Publishers
		(directory publishers, except Internet publishers)	511140	Directory and Mailing List Publishers
		(except database, advertising periodicals, shopping news, technical manuals and books, and sheet music publishing or publishing and printing)	511199	All Other Publishers
		(sheet music publishing or publishing and printing)	512230	Music Publishers
	2752	Commercial Printing, Lithographic	323110	Commercial Lithographic Printing
		(except quick printing) (quick printing)	323114	Quick Printing
	2754	Commercial Printing, Gravure	323111	Commercial Gravure Printing
	2759	Commercial Printing, NEC	323112	Commercial Flexographic Printing
		(flexographic printing) (screen printing)	323113	Commercial Screen Printing
		(digital printing, except quick printing)	323115	Digital Printing
		(other commercial printing except flexographic, screen, digital, and quick printing)	323119	Other Commercial Printing
	2761	Manifold Business Forms

Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing	Sector X. Printing and Publishing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	2771	Greeting Cards (except Internet greeting card publishers)	323110	Commercial Lithographic Printing
		(lithographic printing of greeting cards)	323110	Commercial Lithographic Printing
		(gravure printing of greeting cards)	323111	Commercial Gravure Printing
		(flexographic printing of greeting cards)	323112	Commercial Flexographic Printing
		(screen printing of greeting cards)	323113	Commercial Screen Printing
		(other printing of greeting cards)	323119	Other Commercial Printing
		(publishing greeting cards)	511191	Greeting Card Publishers
	2782	Blankbooks, Looseleaf Binders and Devices (checkbooks)	323116	Manifold Business Form Printing
		(except checkbooks)	323118	Blankbook, Loose-leaf Binder, and Device Manufacturing
	2789	Bookbinding and Related Work	323121	Tradebinding and Related Work
	2791	Typesetting	323122	Prepress Services
	2796	Platemaking and Related Services	323122	Prepress Services

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
Y1	3011	Tires and Inner Tubes	326211	Tire Manufacturing (except Retreading)
Y1	3021	Rubber and Plastics Footwear	316211	Rubber and Plastics Footwear Manufacturing
Y1	3052	Rubber and Plastics Hose and Belting	326220	Rubber and Plastics Hoses and Belting Manufacturing
Y1	3053	Gaskets, Packing, and Sealing Devices	339991	Gaskets, Packing, and Sealing Device Manufacturing
Y1	3061	Molded, Extruded, and Lathe-Cut Mechanical Rubber Goods	326291	Rubber Product Manufacturing for Mechanical Use
Y1	3069	Fabricated Rubber Products, Not Elsewhere Classified (rubberizing fabric or purchased textile products)	313320	Fabric Coating Mills
Y1		(bags made from rubberized fabric)	314911	Textile Bag Mills
Y1		(rubber cut and sew outerwear)	315299	All Other Cut and Sew Apparel Manufacturing

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(bibs, bathing caps, related rubber accessories) (rubber resilient floor coverings)	315999 326192	Other Apparel Accessories and Other Apparel Manufacturing Resilient Floor Covering Manufacturing
		(except rubberized fabric and garments, gloves, life vests, wet suits, accessories, such as bibs and bathing caps, rubber toys, bags made from rubberized fabric, rubber diaper covers, and rubber resilient floor coverings)	326299	All Other Rubber Product Manufacturing
		(rubber gloves, inflatable rubber life jackets)	339113	Surgical and Appliance and Supplies Manufacturing
		(wet suits)	339920	Sporting and Athletic Goods Manufacturing
		(rubber toys, except dolls)	339932	Game, Toy, and Children's Vehicle Manufacturing
Y2	3081	Unsupported Plastics Film and Sheet	326113	Unlaminated Plastics Film and Sheet (except Packaging) Manufacturing
Y2	3082	Unsupported Plastics Profile Shapes	326121	Unlaminated Plastics Profile Shape Manufacturing
Y2	3083	Laminated Plastics Plate, Sheet, and Profile Shapes	326130	Laminated Plastics Plate, Sheet (except Packaging), and Shape Manufacturing
Y2	3084	Plastics Pipe	326122	Plastics Pipe and Pipe Fitting Manufacturing
Y2	3085	Plastics Bottles	326160	Plastics Bottle Manufacturing
Y2	3086	Plastics Foam Products (polystyrene foam products)	326140	Polystyrene Foam Product Manufacturing
Y2		(except polystyrene foam products)	326150	Urethane and Other Foam Product (except Polystyrene) Manufacturing
Y2	3087	Custom Compounding of Purchased Plastics Resins	325991	Custom Compounding of Purchased Resins
Y2	3088	Plastics Plumbing Fixtures	326191	Plastics Plumbing Fixture Manufacturing
Y2	3089	Plastics Products, Not Elsewhere Classified (plastics sausage casings)	326121	Unlaminated Plastics Profile Shape Manufacturing
Y2		(pipe fittings)	326122	Plastics Pipe and Pipe Fitting Manufacturing
Y2		(except plastics pipe fittings, inflatable plastics life jackets, plastics furniture parts, and plastics sausage casings)	326199	All Other Plastics Product Manufacturing
Y2		(finished plastic furniture parts)	337215	Showcase, Partition, Shelving, and Locker Manufacturing

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(inflatable plastic life jackets)	339113	Surgical Appliance and Supplies Manufacturing
	3931	Musical Instruments	339992	Musical Instrument Manufacturing
	3942	Dolls and Stuffed Toys	339931	Doll and Stuffed Toy Manufacturing
	3944	Games, Toys, and Children's Vehicles, Except Dolls and Bicycles (metal tricycles)	336991	Motorcycle, Bicycle, and Parts Manufacturing	Any facility whose primary activity is manufacturing metal tricycles (SIC 3944 / NAICS 336991) should be regulated under Sector AB, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector AB applies additional SWPPP requirements. Sector Y does not apply additional sector- specific requirements to metal tricycle manufacturers and under Sector AD EPA could establish additional facility-specific monitoring and reporting requirements. Regulatory burden would be greater under Sector AB.
		(except metal tricycles)	339932	Game, Toy, and Children's Vehicle Manufacturing
	3949	Sporting and Athletic Goods, Not Elsewhere Classified	339920	Sporting and Athletic Goods Manufacturing
	3951	Pens, Mechanical Pencils, and Parts	339941	Pens, Mechanical Pencil Manufacturing
	3953	Marking Devices	339943	Marking Device Manufacturing
	3955	Carbon Paper and Inked Ribbons	339944	Carbon Paper and Inked Ribbon Manufacturing
	3961	Costume Jewelry and Costume Novelties, Except Precious Metal (except cuff links)	339914	Costume Jewelry and Novelty Manufacturing
		(nonprecious cuff links)	339993	Fastener, Button, Needle, and Pin Manufacturing
	3965	Fasteners, Buttons, Needles, and Pins	339993	Fastener, Button, Needle, and Pin Manufacturing
	3991	Brooms and Brushes	339994	Broom, Brush, and Mop Manufacturing

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3993	Signs and Advertising Specialties (screen printing purchased advertising specialties 34 )	323113	Commercial Screen Printing	Any facility whose primary activity is screen printing purchased advertising specialties (SIC 3993 / NAICS 323113) should be regulated under Sector X, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector X applies additional technology-based effluent limits comprised of good housekeeping measures for material storage areas, and additional SWPPP requirements. Sector Y does not apply additional requirements to these facilities and under Sector AD EPA could establish additional facility- specific monitoring and reporting requirements. Regulatory burden would be greater under Sector X.
		(signs)	339950	Sign Manufacturing
	3995	Burial Caskets	339995	Burial Casket Manufacturing
	3996	Linoleum, Asphalted-Felt-Base, and Other Hard Surface Floor Coverings, Not Elsewhere Classified	326192	Resilient Floor Covering Manufacturing

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3999	Manufacturing Industries, Not Elsewhere Classified (fur dressing and finishing)	316110	Leather and Hide Tanning and Finishing	Any facility whose primary activity is fur dressing and finishing (SIC 3999 / NAICS 316110) should be regulated under Sector Z, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector Z applies additional technology-based effluent limits comprised of good housekeeping measures for material storage areas and handling areas, and additional SWPPP requirements. Sector Y does not apply additional requirements to these facilities and under Sector AD EPA could establish additional facility- specific monitoring and reporting requirements. Regulatory burden would be greater
		(burnt wood articles)	321999	All Other Miscellaneous Wood Product Manufacturing	under Sector Z. Any facility whose primary activity is burnt wood articles (SIC 3999 / NAICS 321999) should be regulated under Sector A, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector A applies additional technology-based effluent limits comprised of good housekeeping measures, additional SWPPP requirements, and benchmark monitoring for COD and TSS. Sector Y does not apply additional requirements to these facilities and under Sector AD EPA could establish additional facility- specific monitoring and reporting requirements. Regulatory burden would be greater under Sector A.

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(matches and match books manufacturing)	325998	All Other Miscellaneous Chemical Product and Preparation Manufacturing	Any facility whose primary activity is matches and match books manufacturing (SIC 3999 / NAICS 325998) should be regulated under Sector C, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sectors C and Y do not require additional sector-specific requirements. EPA could establish additional facility- specific monitoring and reporting requirements under Sector AD. Regulatory burden is not expected to differ between Sectors C and Y.
		(plastics products such as combs, hair curlers, etc.)	326199	All Other Plastics Product Manufacturing
		(hand operated hair clippers for humans)	332211	Cutlery and Flatware (except Precious) Manufacturing	Any facility whose primary activity is manufacturing hand operated hair clippers for humans (SIC 3999 / NAICS 332211) should be regulated under Sector AA, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector AA applies additional technology- based effluent limits comprised of good housekeeping measures, spill prevention and response procedures, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector Y does not require additional sector- specific requirements. EPA could establish additional facility-specific monitoring and reporting requirements under Sector AD. Regulatory burden would be greater under Sector AA.

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(tape measures)	332212	Hand and Edge Tool Manufacturing	Any facility whose primary activity is manufacturing tape measures (SIC 3999 / NAICS 332212) should be regulated under Sector AA, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector AA applies additional
					technology-based effluent limits comprised of good housekeeping measures, spill prevention and response procedures, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector Y does not require additional sector- specific requirements. EPA could establish additional facility-specific monitoring and reporting requirements under Sector AD. Regulatory burden would be greater
		(flocking metal products for the trade)	332812	Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers	under Sector AA. Any facility whose primary activity is manufacturing flocking metal products for the trade (SIC 3999 / NAICS 332812) should be regulated under Sector AA, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector AA applies additional technology- based effluent limits comprised of good housekeeping measures, spill prevention and response procedures, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector Y does not require additional sector- specific requirements. EPA could establish additional facility-specific monitoring and reporting requirements under Sector AD. Regulatory burden would be greater under Sector AA.

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(other miscellaneous metal products, such as combs, hair curlers, etc.)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing	Any facility whose primary activity is manufacturing other miscellaneous metal products, such as combs, hair curlers, etc. (SIC 3999 / NAICS 332999) should be regulated under Sector AA, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector
					AA applies additional technology- based effluent limits comprised of good housekeeping measures, spill prevention and response procedures, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector Y does not require additional sector- specific requirements. EPA could establish additional facility-specific monitoring and reporting requirements under Sector AD. Regulatory burden would be greater under Sector AA.
		(beauty and barber shop equipment, except chairs)	333319	Other Commercial and Service Industry Machinery Manufacturing
		(lamp shades of paper or textile)	335121	Residential Electric Lighting Fixture Manufacturing
		(electric hair clippers for humans)	335211	Electric Housewares and Household Fan Manufacturing	Any facility whose primary activity is manufacturing electric hair clippers for humans (SIC 3999 / NAICS 335211) should be regulated under Sector AC, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sectors Y and AC do not apply sector-specific requirements to facilities manufacturing electric hair clippers for humans. EPA may establish facility- specific monitoring and reporting requirements under Sector AD. Regulatory burden is not expected to differ between Sectors Y and AC.

Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries	Sector Y. Rubber, Miscellaneous Plastic Products, and Miscellaneous Manufacturing Industries
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(beauty and barber chairs)	337127	Institutional Furniture Manufacturing	Any facility whose primary activity is manufacturing beauty and barber chairs (SIC 3999 / NAICS 337127) should be regulated under Sector W, but may continue to be regulated under Sector Y, or alternatively, under Sector AD. Sector Wapplies additional SWPPP requirements to facilities manufacturing beauty and barber chairs. Sector Y applies no additional requirements and under Sector AD EPA could establish additional facility-specific monitoring and reporting requirements. Regulatory burden would be greater under Sector W.
		(embroidery kits)	339932	Game, Toy, and Children's Vehicle Manufacturing
		(other miscellaneous products not specially provided for previously)	339999	All Other Miscellaneous Manufacturing

Sector Z. Leather Tanning and Finishing	Sector Z. Leather Tanning and Finishing	Sector Z. Leather Tanning and Finishing	Sector Z. Leather Tanning and Finishing	Sector Z. Leather Tanning and Finishing	Sector Z. Leather Tanning and Finishing
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
Z1	3111	Leather Tanning and Finishing	316110	Leather and Hide Tanning and Finishing

Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
AA1	3411	Metal Cans	332431	Metal Can Manufacturing
	3412	Metal Shipping Barrels, Drums, Kegs, and Pails	332439	Other Metal Container Manufacturing
	3421	Cutlery (except hedge shears and trimmers, tinners' snips, and similar nonelectric hand tools)	332211	Cutlery and Flatware (except Precious) Manufacturing
		(hedge shears and trimmers, tinners snips, and similar nonelectric hand tools)	332212	Hand and Edge Tool Manufacturing
	3423	Hand and Edge Tools, Except Machine Tools and Handsaws	332212	Hand and Edge Tool Manufacturing
	3425	Saw Blades and Handsaws	332213	Saw Blade and Handsaw Manufacturing
	3429	Hardware, Not Elsewhere Classified (vacuum and insulated bottles, jugs,	332439	Other Metal Container Manufacturing
		and chests) (except fire hose nozzles, hose couplings, vacuum and insulated bottles, jugs and chests, fireplace fixtures, time locks, turnbuckles, pulleys, tackle blocks, luggage and utility racks, sleep sofa mechanisms and chair glides, traps, handcuffs and leg irons, ladder jacks, and other like metal products)	332510	Hardware Manufacturing
		(turnbuckles and hose clamps)	332722	Bolt, Nut, Screw, Rivet, and Washer Manufacturing
		(fire hose nozzles and hose couplings)	332919	Other Metal Valve and Pipe Fitting Manufacturing
		(fireplace fixtures, traps, handcuffs and leg irons, ladder jacks, and other like metal products)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
		(pulleys, tackle blocks, block and tackle assemblies)	333923	Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
		(time locks)	334518	Watch, Clock, and Part Manufacturing
		(luggage and utility racks)	336399	All Other Motor Vehicle Parts Manufacturing
		(sleep sofa mechanisms and chair glides)	337215	Showcase, Partition, Shelving, and Locker Manufacturing
	3431	Enameled Iron and Metal Sanitary Ware	332998	Enameled Iron and Metal Sanitary Ware Manufacturing
3432		Plumbing Fixture Fittings and Trim

Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector		(except shower rods, lawn hose nozzles, and lawn sprinklers)	332913	Plumbing Fixture Fitting and Trim Manufacturing
		(lawn hose nozzles and lawn sprinklers)	332919	Other Metal Valve and Pipe Fitting Manufacturing
		(metal shower rods)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
	3442	Metal Doors, Sash, Frames, Molding, and Trim Manufacturing
	3443	Fabricated Plate Work (Boiler Shops) (fabricated plate work and metal weldments)	332313	Plate Work Manufacturing
	3443	(power boilers and heat exchangers)	332410	Power Boiler and Heat Exchanger Manufacturing
	3443	(heavy gauge tanks)	332420	Metal Tank (Heavy Gauge) Manufacturing
	3443	(metal cooling towers)	333415	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (metal cooling towers)
	3444	Sheet Metal Work (stamped metal skylights)	332321	Metal Window and Door Manufacturing
	3444	(except sheet metal bins and vats, skylights, and sheet metal cooling towers)	332322	Sheet Metal Work Manufacturing
	3444	(metal bins and vats)	332439	Other Metal Container Manufacturing
	3444	(cooling towers, sheet metal)	333415	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
	3446	Architectural and Ornamental Ironwork	332323	Ornamental and Architectural Metal Work Manufacturing
	3448	Prefabricated Metal Buildings and Components	332311	Prefabricated Metal Building and Component Manufacturing
	3449	Miscellaneous Structural Metal Work (custom roll forming)	332114	Custom Roll Forming
	3449	(fabricated bar joists and concrete reinforcing bars)	332312	Fabricated Structural Metal Manufacturing
	3449	(curtain wall and metal plaster bases and lath)	332323	Ornamental and Architectural Metal Work Manufacturing
	3451	Screw Machine Products	332721	Precision Turned Product Manufacturing
	3452	Bolts, Nuts, Screws, Rivets, and Washers	332722	Bolt, Nut, Screw, Rivet, and Washer Manufacturing
	3462	Iron and Steel Forgings	332111	Iron and Steel Forging
	3463	Nonferrous Forgings	332112	Nonferrous Forging

Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3465	Automotive Stampings	336370	Motor Vehicle Metal Stamping
	3466	Crowns and Closures	332115	Crown and Closure Manufacturing
	3469	Metal Stampings, Not Elsewhere Classified (except kitchen utensils, pots and pans for cooking, coins, and stamped metal boxes)	332116	Metal Stamping
		(kitchen utensils, pots, and pans for cooking)	332214	Kitchen Utensil, Pot, and Pan Manufacturing
		(stamped metal tool, cash, mail, and lunch boxes)	332439	Other Metal Container Manufacturing
	3471	Electroplating, Plating, Polishing, Anodizing, and Coloring	332813	Electroplating, Plating, Polishing, Anodizing, and Coloring
AA2	3479	Coating, Engraving, and Allied Services, Not Elsewhere Classified (except jewelry, silverware, and flatware engraving and etching)	332812	Metal Coating, Engraving (except Jewelry and Silverware), and Allied Services to Manufacturers
		(precious metal jewelry engraving and etching)	339911	Jewelry (except Costume) Manufacturing
		(silver and plated ware engraving and etching)	339912	Silverware and Holloware Manufacturing
		(costume jewelry engraving and etching)	339914	Costume Jewelry and Novelty Manufacturing
AA1	3482	Small Arms Ammunition	332992	Small Arms Ammunition Manufacturing
	3483	Ammunition, Except for Small Arms	332993	Ammunition (except for Small Arms) Manufacturing
	3484	Small Arms	332994	Small Arms Manufacturing

Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector	3489	Ordinance and Accessories, Not Elsewhere Classified	332995	Other Ordinance and Accessories Manufacturing
sector	3491	Industrial Valves	332911	Industrial Valve Manufacturing
sector	3492	Fluid Power Valves and Hose Fittings	332912	Fluid Power Valve and Hose Fitting Manufacturing
sector	3493	Steel Springs, Except Wire	332611	Spring (Heavy Gauge) Manufacturing
sector	3494	Valves and Pipe Fittings, Not Elsewhere Classified (except metal pipe hangers and supports)	332919	Other Metal Valve and Pipe Fitting Manufacturing
sector		(metal pipe hangers and supports)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
sector	3495	Wire Springs (except watch and clock springs)	332612	Spring (Light Gauge) Manufacturing
sector		(clock and watch springs)	334518	Watch, Clock, and Part Manufacturing
sector	3496	Miscellaneous Fabricated Wire Products (potato mashers)	332214	Kitchen Utensil, Pot, and Pan Manufacturing
sector		(except shopping carts and potato mashers)	332618	Other Fabricated Wire Product Manufacturing
sector		(shopping carts made from purchased wire)	333924	Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
sector	3497	Metal Foil and Leaf (laminated aluminum foil rolls and sheets for flexible packaging uses)	322225	Laminated Aluminum Foil Manufacturing for Flexible Packaging Uses
sector		(foil and foil containers)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
sector	3498	Fabricated Pipe and Pipe Fittings	332996	Fabricated Pipe and Pipe Fitting Manufacturing
sector	3499	Fabricated Metal Products, Not Elsewhere Classified (powder metallurgy) (metal boxes)	332117 332439	Powder Metallurgy Part Manufacturing Other Metal Container Manufacturing
sector		(safe and vault locks)	332510	Hardware Manufacturing
sector		(metal aerosol valves)	332919	Other Metal Valve and Pipe Fitting Manufacturing
sector		(other metal products)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
sector		(metal automobile seat frames)	336360	Motor Vehicle Seating and Interior Trim Manufacturing
sector		(metal furniture frames)	337215	Showcase, Partition, Shelving, and Locker Manufacturing
	3911 Jewelry, Precious Metal	3911 Jewelry, Precious Metal	339911	Jewelry (except Costume) Manufacturing

Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products	Sector AA. Fabricated Metal Products
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3914	Silverware, Plated Ware, and Stainless Steel Ware (cutlery and flatware, nonprecious and precious plated)	332211	Cutlery and Flatware (except Precious) Manufacturing
	3914	(precious metal plated hollowware)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
	3914	(except nonprecious and precious plated metal cutlery, flatware, and hollowware)	339912	Silverware and Holloware Manufacturing
	3915	Jewelers Findings and Materials and Lapidary Work	334518	Clock, and Part Manufacturing	Any facility whose primary activity is manufacturing watch jewels (SIC 3915 / NAICS 334518) should be regulated under Sector AC, but may continue to be regulated under Sector AA, or alternatively, under Sector AD. Sector AA applies additional technology- based effluent limits comprising good housekeeping measures, spill prevention and response, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector AC does not apply additional sector- specific requirements and EPA may establish facility-specific monitoring and reporting requirements under Sector AD.
		(watch jewels)		Watch,	Regulatory burden would be greater under Sector AA.
		(except watch jewels)	339913	Jewelers' Material and Lapidary Work Manufacturing

Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
AB1	3511	Steam, Gas, and Hydraulic Turbines, and Turbine Generator Set Units	333611	Turbine and Turbine Generator Set Units Manufacturing
	3519	Internal Combustion Engines, Not Elsewhere Classified (except stationary engine radiators)	333618	Other Engine Equipment Manufacturing All Other Motor Vehicle Parts Manufacturing
		(stationary engine radiators)	336399
	3523	Farm Machinery and Equipment (hand hair clippers for animals)	332212	Hand and Edge Tool Manufacturing
		(corrals, stalls, and holding gates)	332323	Ornamental and Architectural Metal Work Manufacturing
		(except corrals, stalls, holding gates, hand clippers for animals, and farm conveyors/elevators)	333111	Farm Machinery and Equipment Manufacturing
		(farm conveyors and elevators)	333922	Conveyor and Conveying Equipment Manufacturing
	3524	Lawn and Garden Tractors and Home Lawn and Garden Equipment (nonpowered lawnmowers)	332212	Hand and Edge Tool Manufacturing
		(except nonpowered lawnmowers)	333112	Lawn and Garden Tractor and Home Lawn and Garden Equipment Manufacturing
	3531	Construction Machinery and Equipment (except railway track maintenance equipment; winches, aerial work platforms; and automotive wrecker hoists)	333120	Construction Machinery Manufacturing
		(winches, aerial work platforms, automobile wrecker hoists, locomotive cranes, and ship cranes)	333923	Overhead Traveling Crane, Hoist, and Monorail System Manufacturing
		(railway track maintenance equipment)	336510	Railroad Rolling Stock Manufacturing
	3532	Mining Machinery and Equipment, Except Oil and Gas Field Machinery and Equipment	333131	Mining Machinery and Equipment Manufacturing
	3533	Oil and Gas Field Machinery and Equipment	333132	Oil and Gas Field Machinery and Equipment Manufacturing
	3534	Elevators and Moving Stairways	333921	Elevators and Moving Stairway Manufacturing
	3535	Conveyors and Conveying Equipment	333922	Conveyors and Conveying Equipment Manufacturing
	3536	Overhead Traveling Cranes, Hoists, and Monorail Systems	333923	Overhead Traveling Cranes, Hoists, and Monorail System Manufacturing

Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3537	Industrial Trucks, Tractors, Trailers, and Stackers (metal air cargo containers)	332439	Other Metal Container Manufacturing All Other Miscellaneous Fabricated Metal
		(metal pallets)	332999	Product Manufacturing
		(except metal pallets and metal air cargo containers)	333924	Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
	3541	Machine Tools, Metal Cutting Types	333512	Machine Tool (Metal Cutting Types) Manufacturing
	3542	Machine Tools, Metal Forming Types	333513	Machine Tool (Metal Forming Types) Manufacturing
	3543	Industrial Patterns	332997	Industrial Pattern Manufacturing
	3544	Special Dies and Tools, Die Sets, Jigs and Fixtures, and Industrial Molds (industrial molds)	333511	Industrial Mold Manufacturing
		(except molds)	333514	Special Die and Tool, Die Set, Jig, and Fixture Manufacturing
	3545	Cutting Tools, Machine Tool Accessories, and Machinist Precision Measuring Devices (precision measuring devices)	332212	Hand and Edge Tool Manufacturing
		(except precision measuring devices)	333515	Cutting Tool and Machine Tool Accessory Manufacturing
	3546	Power-Driven Handtools	333991	Power-Driven Handtool Manufacturing
	3547	Rolling Mill Machinery and Equipment	333516	Rolling Mill Machinery and Equipment Manufacturing
	3548	Electric and Gas Welding and Soldering Equipment (except transformers for arc-welding)	333992	Welding and Soldering Equipment Manufacturing
		(transformers for arc-welders)	335311	Power, Distribution, and Specialty Transformer Manufacturing
	3549	Metalworking Machinery, Not Elsewhere Classified	333518	Other Metalworking Machinery Manufacturing
	3552	Textile Machinery	333292	Textile Machinery Manufacturing
	3553	Woodworking Machinery	333210	Sawmill and Woodworking Machinery Manufacturing
	3554	Paper Industries Machinery	333291	Paper Industry Machinery Manufacturing
	3555	Printing Trades Machinery and Equipment	333293	Printing Machinery and Equipment Manufacturing
	3556	Food Products Machinery	333294	Food Product Machinery Manufacturing

Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector	3559	Special Industry Machinery, Not Elsewhere Classified (nuclear control rod drive	332410	Power Boiler and Heat Exchanger Manufacturing
	3559	mechanisms) (cotton ginning machinery)	333111	Farm Machinery and Equipment Manufacturing Plastics and Rubber Industry Machinery
	3559	(rubber and plastics manufacturing machinery)	333220	Manufacturing
		(semiconductor machinery manufacturing)	333295	Semiconductor Machinery Manufacturing
		(except rubber and plastics manufacturing machinery, semiconductor manufacturing machinery, and automotive maintenance equipment)	333298	All Other Industrial Machinery Manufacturing
		(automotive maintenance equipment)	333319	Other Commercial and Service Industry Machinery Manufacturing
	3561	Pumps and Pumping Equipment	333911	Pump and Pumping Equipment Manufacturing
	3562	Ball and Roller Bearings	332991	Ball and Roller Bearing Manufacturing
	3563	Air and Gas Compressors	333912	Air and Gas Compressor Manufacturing
	3564	Industrial and Commercial Fans and Blowers and Air Purification Equipment	333411	Air Purification Equipment Manufacturing
	3564	(air purification equipment)
	3564	(fans and blowers)	333412	Industrial and Commercial Fan and Blower Manufacturing
	3565	Packaging Machinery	333993	Packaging Machinery Manufacturing
	3566	Speed Changers, Industrial High- Speed Drives, and Gears	333612	Speed Changer, Industrial High-Speed Drives, and Gear Manufacturing
	3567	Industrial Process Furnaces and Ovens	333994	Industrial Process Furnace and Oven Manufacturing
	3568	Mechanical Power Transmission Equipment, Not Elsewhere Classified	333613	Mechanical Power Transmission Equipment Manufacturing
	3569	General Industrial Machinery and Equipment, Not Elsewhere Classified (textile fire hose)	314999	All Other Miscellaneous Textile Product Mills
	3569	(electric swimming pool heaters)	333414	Heating Equipment (except Warm Air Furnaces) Manufacturing
	3569	(except fire hoses and electric swimming pool heaters)	333999	All Other Miscellaneous General Purpose Machinery Manufacturing
	3581	Automatic Vending Machines	333311	Automatic Vending Machine Manufacturing
	3582	Commercial Laundry, Drycleaning, and Pressing Machines	333312	Commercial Laundry, Drycleaning, and Pressing Machine Manufacturing

Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3585	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment	333415	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
		(except motor vehicle air-conditioning)
		(motor vehicle air-conditioning)	336391	Motor Vehicle Air-Conditioning Manufacturing
	3586	Measuring and Dispensing Pumps	333913	Measuring and Dispensing Pump Manufacturing
	3589	Service Industry Machinery, Not Elsewhere Classified	333319	Other Commercial and Service Industry Machinery Manufacturing
	3592	Carburetors, Pistons, Piston Rings, and Valves	336311	Carburetor, Piston, Piston Ring, and Valve Manufacturing
	3593	Fluid Power Cylinders and Actuators	333995	Fluid Power Cylinder and Actuator Manufacturing
	3594	Fluid Power Pumps and Motors	333996	Fluid Power Pumps and Motors Manufacturing
	3596	Scales and Balances, Except Laboratory	333997	Scale and Balance (except Laboratory) Manufacturing
	3599	Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified (machine shops)	332710	Machine Shops
		(grinding castings for the trade)	332813	Electroplating, Plating, Polishing, Anodizing and Coloring
		(flexible metal hose)	332999	All Other Miscellaneous Fabricated Metal Product Manufacturing
		(carnival amusement park equipment)	333319	Other Commercial and Service Industry Machinery Manufacturing
		(other industrial and commercial machinery and equipment)	333999	All Other Miscellaneous General Purpose Machinery Manufacturing
		(water leak detectors)	334519	Other Measuring and Controlling Device Manufacturing
		(gasoline, oil, and intake filters for internal combustion engines, except for motor vehicles)	336399	All Other Motor Vehicle Parts Manufacturing
	3711	Motor Vehicles and Passenger Car Bodies	336111	Automobile Manufacturing
		(automobiles) (light trucks and utility vehicles)	336112	Light Truck and Utility Vehicle Manufacturing
		(heavy duty trucks)	336120	Heavy Duty Truck Manufacturing
		(kit car and other passenger car bodies)	336211	Motor Vehicle Body Manufacturing

Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(military armored vehicles)	336992	Military Armored Vehicle, Tank, and Tank Component Manufacturing
	3713	Truck and Bus Bodies	336211	Motor Vehicle Body Manufacturing
	3714	Motor Vehicle Parts and Accessories (dump truck lifting mechanisms and fifth wheels)	336211	Motor Vehicle Body Manufacturing
		(gasoline engines and engine parts including rebuilt)	336312	Gasoline Engine and Engine Parts Manufacturing
		(wiring harness sets, other than ignition; block heaters and battery heaters; instrument board assemblies; permanent defrosters; windshield washer-wiper mechanisms; cruise control mechanisms; and other electrical equipment for internal combustion engines)	336322	Other Motor Vehicle Electrical and Electronic Equipment Manufacturing
		(steering and suspension parts)	336330	Motor Vehicle Steering and Suspension Components (except Spring) Manufacturing
		(brake and brake systems, including assemblies)	336340	Motor Vehicle Brake System Manufacturing
		(transmissions and power train parts, including rebuilding)	336350	Motor Vehicle Transmission and Power Train Parts Manufacturing
		(except truck and bus bodies, trailers, engine and engine parts, motor vehicle electrical and electronic equipment, motor vehicle steering and suspension components, motor vehicle brake systems, and motor vehicle transmission and power train parts)	336399	All Other Motor Vehicle Parts Manufacturing
	3715	Truck Trailers	336212	Truck Trailer Manufacturing
	3716	Motor Homes	336213	Motor Home Manufacturing
	3721	Aircraft (except research and development not producing prototypes)	336411	Aircraft Manufacturing
	3724	Aircraft Engines and Engine Parts (except research and development not producing prototypes)	336412	Aircraft Engine and Engine Parts Manufacturing
	3728	Aircraft Parts and Auxiliary Equipment, Not Elsewhere Classified (fluid power aircraft subassemblies)	332912	Fluid Power Valve and Hose Fitting Manufacturing
		(target drones)	336411	Aircraft Manufacturing

Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery	Sector AB. Transportation Equipment, Industrial or Commercial Machinery
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3743	(except fluid power aircraft subassemblies, target drones, and research and development not producing prototypes)	336413	Other Aircraft Part and Auxiliary Equipment Manufacturing
	3743	Railroad Equipment (locomotive fuel lubricating or cooling medium pumps)	333911	Pump and Pumping Equipment Manufacturing
	3743	(except locomotive fuel lubricating or cooling medium pumps)	336510	Railroad Rolling Stock Manufacturing
	3751	Motorcycles, Bicycles, and Parts	336991	Motorcycle, Bicycle, and Parts Manufacturing
	3761	Guided Missiles and Space Vehicles (except research and development not producing prototypes)	336414	Guided Missile and Space Vehicle Manufacturing
	3764	Guided Missile and Space Vehicle Propulsion Units and Propulsion Unit Parts (except research and development not producing prototypes)	336415	Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing
	3769	Guided Missile and Space Vehicle Parts and Auxiliary Equipment, Not Elsewhere Classified (except research and development not producing prototypes)	336419	Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing
	3792	Travel Trailers and Campers	336214	Travel Trailer and Camper Manufacturing
	3795	Tanks and Tank Components	336992	Military Armored Vehicle, Tank, and Tank Component Manufacturing
	3799	Transportation Equipment, Not Elsewhere Classified (wheelbarrows)	333924	Industrial Truck, Tractor, Trailer, and Stacker Machinery Manufacturing
	3799	(automobile, boat, utility and light truck trailers)	336214	Travel Trailer and Camper Manufacturing
	3799	(trailer hitches)	336399	All Other Motor Vehicle Parts Manufacturing
	3799	(except automobile, boat, utility light truck trailers, trailer hitches, and wheelbarrows)	336999	All Other Transportation Equipment Manufacturing

Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
AC1	3571	Electronic Computers	334111	Electronic Computer Manufacturing
AC1	3572	Computer Storage Devices	334112	Computer Storage Device Manufacturing
AC1	3575	Computer Terminals	334113	Computer Terminal Manufacturing
AC1	3577	Computer Peripheral Equipment, Not Elsewhere Classified (except plotter controllers and magnetic tape head cleaners)	334119	Other Computer Peripheral Equipment Manufacturing
AC1		(plotter controllers)	334418	Printed Circuit Assembly (Electronic Assembly) Manufacturing
AC1		(magnetic tape head cleaners)	334613	Magnetic and Optical Recording Media Manufacturing
	3578	Calculating and Accounting Machinery, Except Electronic Computers (change making machines)	333311	Automatic Vending Machine Manufacturing
		(except point of sales terminals, change making machines and funds transfer devices)	333313	Office Machinery Manufacturing
		(point of sale terminals and fund transfer devices)	334119	Other Computer Peripheral Equipment Manufacturing
	3579	Office Machines, Not Elsewhere Classified (except timeclocks, time stamps, pencil sharpeners, stapling machines, etc.)	333313	Office Machinery Manufacturing
		(time clocks and other time recording devices)	334518	Watch, Clock, and Part Manufacturing
		(pencil sharpeners, staplers and other office equipment)	339942	Lead Pencil and Art Good Manufacturing
	3612	Power, Distribution, and Specialty Transformers	335311	Power, Distribution, and Specialty Transformer Manufacturing
	3613	Switchgear and Switchboard Apparatus	335313	Switchgear and Switchboard Apparatus Manufacturing
	3621	Motors and Generators	335312	Motors and Generator Manufacturing
	3624	Carbon and Graphite Products	335991	Carbon and Graphite Product Manufacturing
	3625	Relays and Industrial Controls	335314	Relay and Industrial Control Manufacturing
	3629	Electrical Industrial Apparatus, Not Elsewhere Classified	335999	All Other Miscellaneous Electrical Equipment and Component Manufacturing
	3631	Household Cooking Equipment	335221	Household Cooking Appliance Manufacturing
	3632	Household Refrigerators and Home and Farm Freezers	335222	Household Refrigerator and Home Freezer Manufacturing

Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3633	Household Laundry Equipment	335224	Household Laundry Equipment Manufacturing
	3634	Electric Housewares and Fans (wall and baseboard heating units for permanent installation)	333414	Heating Equipment (except Warm Air Furnaces) Manufacturing
		(except wall and baseboard heating units for permanent installation, electronic cigarette lighters, and wall mount restroom hand dryers)	335211	Electric Housewares and Household Fan Manufacturing
		(electronic cigarette lighters)	339999	All Other Miscellaneous Manufacturing
	3635	Household Vacuum Cleaners	335212	Household Vacuum Cleaner Manufacturing
	3639	Household Appliances, Not Elsewhere Classified (household sewing machines)	333298	All Other Industrial Machinery Manufacturing
		(floor waxing and floor polishing machines)	335212	Household Vacuum Cleaner Manufacturing
		(except floor waxing and floor polishing machines, and household sewing machines)	335228	Other Major Household Appliance Manufacturing
	3641	Electric Lamp Bulbs and Tubes	335110	Electric Lamp Bulbs and Part Manufacturing
	3643	Current-Carrying Wiring Devices	335931	Current-Carrying Wiring Device Manufacturing
	3644	Noncurrent-Carrying Wiring Devices	332212		Any facility whose primary activity is manufacturing fish wire, electrical wiring tool (SIC 3644 / NAICS 332212) should be regulated under Sector AA, but may continue to be regulated under Sector AC, or alternatively, under Sector AD. Sector AA applies additional technology- based effluent limits comprising good housekeeping measures, spill prevention and response, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector AC does not apply additional sector- specific requirements and EPA may establish facility-specific monitoring and reporting requirements under Sector AD.
		(fish wire, electrical wiring tool)		Hand and Edge Tool Manufacturing	Regulatory burden would be greater under Sector AA.
		(except fishwire, electrical wiring tool)	335932	Noncurrent-Carrying Wiring Device Manufacturing

Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods
Sub-	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
sector	3645	Residential Electric Lighting Fixtures	335121	Residential Electric Lighting Fixture Manufacturing
sector	3646	Commercial, Industrial, and Institutional Electric Lighting Fixtures	335122	Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing
sector	3647	Vehicular Lighting Equipment	336321	Vehicular Lighting Equipment Manufacturing
sector	3648	Lighting Equipment, Not Elsewhere Classified	335129	Other Lighting Equipment Manufacturing
sector	3651	Household Audio and Video Equipment	334310	Audio and Video Equipment Manufacturing
sector	3652	Phonograph Records and Prerecorded Audio Tapes and Disks (reproduction of all other media except video)	334612	Prerecorded Compact Disc (except Software), Tape, and Record Reproducing
	3661	Telephone and Telegraph Apparatus (except consumer external modems)	334210	Telephone Apparatus Manufacturing
		(consumer external modems)	334418	Printed Circuit Assembly (Electronic Assembly) Manufacturing
	3663	Radio and Television Broadcasting and Communications Equipment	334220	Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
	3669	Communications Equipment, Not Elsewhere Classified	334290	Other Communications Equipment Manufacturing
	3671	Electron Tubes	334411	Electron Tube Manufacturing
	3672	Printed Circuit Boards	334412	Bare Printed Circuit Board Manufacturing
	3674	Semiconductors and Related Devices	334413	Semiconductor and Related Device Manufacturing
	3675	Electronic Capacitors	334414	Electronic Capacitor Manufacturing
	3676	Electronic Resistors	334415	Electronic Resistor Manufacturing
	3677	Electronic Coils, Transformers, and Other Inductors	334416	Electronic Coil, Transformer, and Other Inductor Manufacturing
	3678	Electronic Connectors	334417	Electronic Connector Manufacturing
	3679	Electronic Components, Not Elsewhere Classified		Radio and Television Broadcasting and Wireless Communications Equipment
		(antennas)	334220	Manufacturing
		(radio headphones) (printed circuit/electronic assembly manufacturing)	334310 334418	Audio and Video Equipment Manufacturing Printed Circuit Assembly (Electronic Assembly) Manufacturing
		(other electronic components)	334419	Other Electronic Component Manufacturing
	3691	Storage Batteries	335911	Storage Battery Manufacturing
	3692	Primary Batteries, Dry and Wet	335912	Primary Battery Manufacturing

Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3694	Electrical Equipment for Internal Combustion Engines	336322	Other Motor Vehicle Electrical and Electronic Equipment Manufacturing
	3695	Magnetic and Optical Recording Media	334613	Magnetic and Optical Recording Media Manufacturing
	3699	Electrical Machinery, Equipment, and Supplies, Not Elsewhere Classified (electronic teaching machines and flight simulators)	333319	Other Commercial and Service Industry Machinery Manufacturing
		(outboard electric motors)	333618	Other Engine Equipment Manufacturing	Any facility whose primary activity is manufacturing outboard electric motors (SIC 3699 / NAICS 333618) should be regulated under Sector AB, but may continue to be regulated under Sector AC, or alternatively, under Sector AD. Sector AB applies additional sector- specific SWPPP requirements. Sector AC does not apply additional sector- specific requirements and EPA may establish facility-specific monitoring and reporting requirements under Sector AD. Regulatory burden would be greater under Sector AB.
		(laser welding and soldering equipment)	333992	Welding and Soldering Equipment Manufacturing
		(Christmas tree lighting sets, electric insect lamps, electric fireplace logs, and trouble lights)	335129	Other Lighting Equipment Manufacturing
		(other electrical industrial apparatus)	335999	All Other Miscellaneous Electrical Equipment and Component Manufacturing
	3812	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical Systems and Instruments	334511	Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
	3821	Laboratory Apparatus and Furniture	339111	Laboratory Apparatus and Furniture Manufacturing
	3822	Automatic Controls for Regulating Residential and Commercial Environments and Appliances	334512	Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
	3823	Industrial Instruments for Measurement, Display, and Control of Process Variables; and Related Products	334513	Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables

Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
	3824	Totalizing Fluid Meters and Counting Devices	334514	Totalizing Fluid Meter and Counting Device Manufacturing
	3825	Instruments for Measuring and Testing of Electricity and Electrical Signals (automotive ammeters	334514	Totalizing Fluid Meter and Counting Device Manufacturing
		and voltmeters) (except automotive instruments)	334515	Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
	3826	Laboratory Analytical Instruments	334516	Analytical Laboratory Instrument Manufacturing
	3827	Optical Instruments and Lenses	333314	Optical Instruments and Lens Manufacturing
	3829	Measuring and Controlling Devices, Not Elsewhere Classified (motor vehicle gauges)	334514	Totalizing Fluid Meter and Counting Device Manufacturing
		(electronic chronometers)	334518	Watch, Clock, and Part Manufacturing
		(except medical thermometers, electronic chronometers and motor vehicle gauges)	334519	Other Measuring and Controlling Device Manufacturing
		(medical thermometers)	339112	Surgical and Medical Instrument Manufacturing
	3841	Surgical and Medical Instruments and Apparatus (tranquilizer guns)	332994	Small Arms Manufacturing	Any facility whose primary activity is manufacturing tranquilizer guns (SIC 3841 / NAICS 332994) should be regulated under Sector AA, but may continue to be regulated under Sector AC, or alternatively, under Sector AD. Sector AA applies additional technology- based effluent limits comprising good housekeeping measures, spill prevention and response, and spills and leaks; additional SWPPP requirements; and additional inspection requirements. Sector AC does not apply additional sector-specific requirements and EPA may establish facility-specific monitoring and reporting requirements under Sector AD. Regulatory burden would be greater under Sector AA.
		(operating room tables)	339111	Laboratory Apparatus and Furniture Manufacturing

Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods	Sector AC. Electronic, Electrical, Photographic and Optical Goods
Sub- sector	SIC Codes	SIC Codes	NAICS Codes	NAICS Codes	Notes
		(except tranquilizer guns and operating room tables)	339112	Surgical and Medical Instrument Manufacturing
	3842	Orthopedic, Prosthetic, and Surgical Appliances and Supplies (incontinent pads and bed pads)	322291	Sanitary Paper Product Manufacturing	Any facility whose primary activity is manufacturing incontinent pads and bed pads (SIC 3842 / NAICS 322291) should be regulated under Sector B, but may continue to be regulated under Sector AC, or alternatively, under Sector AD. Sectors B and AC do not apply additional sector-specific requirements. EPA may require additional facility- specific monitoring and reporting requirement under Sector AD. Regulatory burden is not expected to differ between Sectors B and AC.
		(electronic hearing aids)	334510	Electromedical and Electrotherapeutic Apparatus Manufacturing
		(except electronic hearing aids, incontinent pads, anatomical models, and bed pads)	339113	Surgical Appliance and Supplies Manufacturing
		(anatomical models)	339999	All Other Miscellaneous Manufacturing
	3843	Dental Equipment and Supplies	339114	Dental Equipment and Supplies Manufacturing
	3844	X-Ray Apparatus and Tubes and Related Irradiation Apparatus	334517	Irradiation Apparatus Manufacturing
	3845	Electromedical and Electrotherapeutic Apparatus (except CT and CAT scanners)	334510	Electromedical and Electrotherapeutic Apparatus Manufacturing
		(CT and CAT Scanners)	334517	Irradiation Apparatus Manufacturing
	3851	Ophthalmic Goods (intraoccular lenses, i.e., surgical	339113	Surgical Appliance and Supplies Manufacturing
		implants) (except intraocular lenses)	339115	Ophthalmic Goods Manufacturing
	3861	Photographic Equipment and Supplies (photographic films, paper, plates and chemicals)	325992	Photographic Film, Paper, Plate, and Chemical Manufacturing
		(except photographic film, paper, plates, and chemicals)	333315	Photographic and Photocopying Equipment Manufacturing
	3873	Watches, Clocks, Clockwork Operated Devices, and Parts	334518	Watch, Clock, and Part Manufacturing

Sector AD. Non-Classified Facilities	Sector AD. Non-Classified Facilities	Sector AD. Non-Classified Facilities
Sub- Sector	Narrative Description	Notes
AD1	Other stormwater discharges designated by the Director as needing a permit (see 40 CFR 122.26(a)(9)(i)(C) & (D)) or any facility discharging stormwater associated with industrial activity not described by any of Sectors A-AC. NOTE: Facilities may not elect to be covered under Sector AD. Only the Director may assign a facility to Sector AD.