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Water Quality Control Division—Stormwater www.coloradowaterpermits.com APPENDIX A INDUSTRIES REQUIRED TO OBTAIN STORMWATER DISCHARGE PERMIT COVERAGE The Standard Industrial Classification(SIC)Code or codes for the facility usually determines permit coverage. SIC Codes are assigned according to the primary activities performed by a company. They are often assigned for insurance purposes or when a business registers as a corporation. Industries can also determine their SIC Code by checking with their trade association, Chamber of Commerce, legal counsel, library for the SIC Manual, or on-line at http://www.osha.gov/pls/imis/sicsearch.html. The industries are listed here by their SIC Code. The manufacturing industries are generally represented by SIC Codes 20-39. (A two digit code,such as 42, means that all industries under that heading,from 4200 to 4299, are covered.) Use this table to determine which of the Division's general permits is appropriate for your facility. SIC Permit Code Industry Type Notes Type 10 Metal mining and milling (a)(b) M 12 Coal mining (a)(b) C 13 Oil and gas extraction (c)(d) L 14 Mining and quarrying of nonmetallic minerals except fuels (a)(b) S NA Construction (b) N 20 Food and kindred products(except) L 2011 Meat packing plants H 2015 Poultry slaughtering and processing H 2077 Animal and marine fats and oils H 21 Tobacco products L 22 Textile mills L 23 Apparel and other finished products made from fabric and similar material L 24 Lumber and wood products except furniture(except) L 2491 Wood preserving H 25 Furniture and fixtures L 26 Paper and allied products L 27 Printing, publishing, and allied products L 28 Chemicals and allied products(except) (b) H 283 Drugs H 285 Paints and allied products H 29 Petroleum refining and related industries(except) (b) H 2951 Asphalt batch plants (e) L,N,S 30 Rubber and miscellaneous plastics products H 31 Leather Products(except) L 311 Leather tanning and finishing L 32 Stone, clay,glass and concrete products(except) L 3241 Cement manufacturing (b) H 3273 Ready-mix concrete facilities (e) L,N,S 33 Primary metals industries H 34 Fabrication of metal products, except machinery and transportation L equipment(except) 3441 Fabricated structural metal L 35 Industrial and commercial machinery and computer equipment L 36 Electronic and other electrical equipment and components,except computer equipment L 37 Transportation equipment L 38 Measuring,analyzing,and controlling instruments: photographic, L medical, and optical goods,watches and clocks 39 Miscellaneous manufacturing industries L 40 Railroad transportation (f) L 41 Local and suburban transit and interurban highway passenger transportation (f) L 42 Motor freight transportation and warehousing(except) (f) L 4221 Farm Product warehousing and storage L 4222 Refrigerated warehousing and storage L 4225 General warehousing and storage L 43 US Postal Facilities (f) L 44 Water Transportation (f) L 45 Transportation by Air (f)(g) L,H 4911 Steam electric power generation(all fuel types) (b) H 4952 Wastewater treatment plants with a design flow of 1.0 MGD or more, (b) L or required to have an approved pretreatment program under 40 CFR 403 Page 6 of 8 Revised 3/2011