The following industrial subcategories are considered to have dilute wastestreams for purposes of the combined wastestream formula. They either were or could have been excluded from categorical pretreatment standards pursuant to paragraph 8 of the Natural Resources Defense Council, Inc., et al. v. Costle Consent Decree for one or more of the following four reasons: (1) The pollutants of concern are not detectable in the effluent from the industrial user (paragraph 8(a)(iii)); (2) the pollutants of concern are present only in trace amounts and are neither causing nor likely to cause toxic effects (paragraph 8(a)(iii)); (3) the pollutants of concern are present in amounts too small to be effectively reduced by technologies known to the Administrator (paragraph 8(a)(iii)); or (4) the wastestream contains only pollutants which are compatible with the POTW (paragraph 8(b)(i)). In some instances, different rationales were given for exclusion under paragraph 8. However, EPA has reviewed these subcategories and has determined that exclusion could have occurred due to one of the four reasons listed above.

This list is complete as of October 9, 1986. It will be updated periodically for the convenience of the reader.

Auto and Other Laundries (40 CFR part 444)

Carpet and Upholstery Cleaning

Coin-Operated Laundries and Dry Cleaning

Diaper Services

Dry Cleaning Plants except Rug Cleaning

Industrial Laundries

Laundry and Garment Services, Not Elsewhere Classified

Linen Supply

Power Laundries, Family and Commercial

Electrical and Electronic Components1 (40 CFR part 469)

Capacitors (Fluid Fill)

Carbon and Graphite Products

Dry Transformers

Ferrite Electronic Devices

Fixed Capacitors

Fluorescent Lamps

Fuel Cells

Incandescent Lamps

Magnetic Coatings

Mica Paper Dielectric

Motors, Generators, Alternators

Receiving and Transmitting Tubes

Resistance Heaters

Resistors

Swithchgear

Transformer (Fluid Fill)

Metal Molding and Casting (40 CFR part 464)

Nickel Casting

Tin Casting

Titanium Casting

Gum and Wood Chemicals (40 CFR part 454)

Char and Charcoal Briquets

Inorganic Chemicals Manufacturing (40 CFR part 415)

Ammonium Chloride

Ammonium Hydroxide

Barium Carbonate

Calcium Carbonate

Carbon Dioxide

Carbon Monoxide and Byproduct Hydrogen

Hydrochloric Acid

Hydrogen Peroxide (Organic Process)

Nitric Acid

Oxygen and Nitrogen

Potassium Iodide

Sodium Chloride (Brine Mining Process)

Sodium Hydrosulfide

Sodium Hydrosulfite

Sodium Metal

Sodium Silicate

Sodium Thiosulfate

Sulfur Dioxide

Sulfuric Acid

Leather (40 CFR part 425)

Gloves

Luggage

Paving and Roofing (40 CFR part 443)

Asphalt Concrete

Asphalt Emulsion

Linoleum

Printed Asphalt Felt

Roofing

Pulp, Paper, and Paperboard, and Builders' Paper and Board Mills (40 CFR parts 430 and 431)

Groundwood-Chemi-Mechanical

Rubber Manufacturing (40 CFR part 428)

Tire and Inner Tube Plants

Emulsion Crumb Rubber

Solution Crumb Rubber

Latex Rubber

Small-sized General Molded, Extruded and Fabricated Rubber Plants,2

Medium-sided General Molded, Extruded and Fabricated Rubber Plants2

Large-sized General Molded, Extruded and Fabricated Rubber Plants2

Wet Digestion Reclaimed Rubber

Pan, Dry Digestion, and Mechanical Reclaimed Rubber

Latex Dipped, Latex-Extruded, and Latex-Molded Rubber3

Latex Foam4

Soap and Detergent Manufacturing (40 CFR part 417)

Soap Manufacture by Batch Kettle

Fatty Acid Manufacture by Fat Splitting

Soap Manufacture by Fatty Acid

   Neutralization

Glycerine Concentration

Glycerine Distillation

Manufacture of Soap Flakes and Powders

Manufacture of Bar Soaps

Manufacture of Liquid Soaps

Manufacture of Spray Dried Detergents

Manufacture of Liquid Detergents

Manufacture of Dry Blended Detergents

Manufacture of Drum Dried Detergents

Manufacture of Detergent Bars and Cakes

Textile Mills (40 CFR part 410)

Apparel manufacturing

Cordage and Twine

Padding and Upholstery Filling

Timber Products Processing (40 CFR part 429)

Barking Process

Finishing Processes

Hardboard—Dry Process

[51 FR 36372, Oct. 9, 1986]