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. NR 274.144 New source performance standards. NR 274.146 Pretreatment standards for new sources. Subchapter XV — Primary Beryllium
NR 274.15 Applicability; description of the primary beryllium subcategory. NR 274.152 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.153 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.154 New source performance standards. NR 274.156 Pretreatment standards for new sources. Subchapter XVIII — Primary and Secondary Germanium and Gallium
NR 274.18 Applicability; description of the primary and secondary germanium and gallium subcategory. NR 274.182 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.183 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.184 New source performance standards. NR 274.185 Pretreatment standards for existing sources. NR 274.186 Pretreatment standards for new sources. Subchapter XIX — Secondary Indium
NR 274.19 Applicability; description of the secondary indium subcategory. NR 274.194 New source performance standards. NR 274.195 Pretreatment standards for existing sources. NR 274.196 Pretreatment standards for new sources. Subchapter XX — Secondary Mercury
NR 274.20 Applicability; description of the secondary mercury subcategory. NR 274.204 New source performance standards. NR 274.206 Pretreatment standards for new sources. Subchapter XXI — Primary Molybdenum and Rhenium
NR 274.21 Applicability; description of the primary molybdenum and rhenium subcategory. NR 274.212 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.213 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.214 New source performance standards. NR 274.216 Pretreatment standards for new sources. Subchapter XXIII — Primary Nickel and Cobalt
NR 274.23 Applicability; description of the primary nickel and cobalt subcategory. NR 274.232 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.233 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.234 New source performance standards. NR 274.236 Pretreatment standards for new sources. Subchapter XXIV — Secondary Nickel
NR 274.24 Applicability; description of the secondary nickel subcategory. NR 274.244 New source performance standards. NR 274.245 Pretreatment standards for existing sources. NR 274.246 Pretreatment standards for new sources. Subchapter XXV — Primary Precious Metals and Mercury
NR 274.25 Applicability; description of the primary precious metals and mercury subcategory. NR 274.252 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. NR 274.253 Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable. NR 274.254 New source performance standards. NR 274.256 Pretreatment standards for new sources. Subchapter XXVI — Secondary Precious Metals
NR 274.26 Applicability; description of the secondary precious metals subcategory. NR 274.261 Specialized definition.
