Subchapter II — Primary Aluminum Smelting
NR 274.02 Applicability; description of the primary aluminum smelting subcategory. NR 274.021 Measurements not detecting benzo(a)pyrene. NR 274.022 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.023 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.024 New source performance standards. NR 274.026 Pretreatment standards for new sources. Subchapter III — Secondary Aluminum Smelting
NR 274.03 Applicability; description of the secondary aluminum smelting subcategory. NR 274.032 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.033 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.034 New source performance standards. NR 274.035 Pretreatment standards for existing sources. NR 274.036 Pretreatment standards for new sources. Subchapter IV — Primary Copper Smelting
NR 274.04 Applicability; description of the primary copper smelting subcategory. NR 274.041 Specialized definitions. NR 274.0415 Combining waste streams. NR 274.042 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.043 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.044 New source performance standards. NR 274.046 Pretreatment standards for new sources. Subchapter V — Primary Electrolytic Copper Refining
NR 274.05 Applicability; description of the primary electrolytic copper refining subcategory. NR 274.052 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.053 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.054 New source performance standards. NR 274.056 Pretreatment standards for new sources. Subchapter VI — Secondary Copper
NR 274.06 Applicability; description of the secondary copper subcategory. NR 274.061 Specialized definitions. NR 274.062 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.063 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.064 New source performance standards. NR 274.065 Pretreatment standards for existing sources. NR 274.066 Pretreatment standards for new sources. Subchapter VII — Primary Lead
NR 274.07 Applicability; description of the primary lead subcategory. NR 274.072 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.073 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.074 New source performance standards. NR 274.075 Pretreatment standards for existing sources. NR 274.076 Pretreatment standards for new sources. Subchapter VIII — Primary Zinc
NR 274.08 Applicability; description of the primary zinc subcategory. NR 274.082 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.083 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.084 New source performance standards. NR 274.085 Pretreatment standards for existing sources. NR 274.086 Pretreatment standards for new sources. Subchapter IX — Metallurgical Acid Plants
NR 274.09 Applicability; description of the metallurgical acid plants subcategory. NR 274.092 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.093 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.094 New source performance standards. NR 274.095 Pretreatment standards for existing sources. NR 274.096 Pretreatment standards for new sources. Subchapter X — Primary Tungsten
NR 274.10 Applicability; description of the primary tungsten subcategory. NR 274.102 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.103 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.104 New source performance standards. NR 274.105 Pretreatment standards for existing sources. NR 274.106 Pretreatment standards for new sources. Subchapter XI — Primary Columbium-Tantalum
NR 274.11 Applicability; description of the primary columbium-tantalum subcategory. NR 274.112 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.113 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.114 New source performance standards. NR 274.115 Pretreatment standards for existing sources. NR 274.116 Pretreatment standards for new sources. Subchapter XII — Secondary Silver
NR 274.12 Applicability; description of the secondary silver subcategory. NR 274.122 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.123 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.124 New source performance standards. NR 274.125 Pretreatment standards for existing sources. NR 274.126 Pretreatment standards for new sources. Subchapter XIII — Secondary Lead
NR 274.13 Applicability; description of the secondary lead subcategory. NR 274.132 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.133 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.134 New source performance standards. NR 274.135 Pretreatment standards for existing sources. NR 274.136 Pretreatment standards for new sources. Subchapter XIV — Primary Antimony
NR 274.14 Applicability; description of the primary antimony subcategory. NR 274.142 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.143 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.
