On January 1, 1997, the U.S. Government, in cooperation with the governments of Canada and Mexico, adopted a new industry classification system, the North American Industry Classification System (NAICS), to replace the Standard Industrial Classification (SIC) codes (April 9, 1997, 62 FR 17288). The applicability of some Part 68 requirements is determined, in part, by SIC codes, and Part 68 also requires the reporting of SIC codes in the RMP. Therefore, EPA has revised Part 68 to replace all references to SIC code'' with NAICS code.'' In addition, EPA is replacing, as proposed, the nine SIC codes with ten NAICS codes, as follows:

2611 Pulp Mills 32211 Pulp Mills
2812 Chlor-Alkali 325181 Alkalies and Chlorine
2819 Industrial Inorganics 325188 All other industrial inorganics
2821 Plastics and Resins 325211 Plastics and Resins
2865 Cyclic Crudes 325192 Other cyclic crude and intermediate manufacturing
2869 Industrial Organics 325199 All other basic organic chemical manufacturing
2873 Nitrogen Fertilizers 325311 Nitrogen Fertilizers
2879 Agricultural Chemicals 32532 Pesticide and other agricultural chemicals
2911 Petroleum Refineries 32411 Petroleum Refineries
N/A N/A 32511 Petrochemical Manufacturing

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