40Protection of Environment312019-07-012018-07-01trueNONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY421PART 421Protection of EnvironmentENVIRONMENTAL PROTECTION AGENCY (CONTINUED)EFFLUENT GUIDELINES AND STANDARDSPt. 421PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORYGeneral ProvisionsSec.421.1Applicability.421.2[Reserved]421.3Monitoring and reporting requirements.421.4Compliance date for pretreatment standards for existing sources (PSES).421.5Removal allowances for pretreatment standards.Subpart A—Bauxite Refining Subcategory421.10Applicability; description of the bauxite refining subcategory.421.11Specialized definitions.421.12Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.13Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.14[Reserved]421.15Standards of performance for new sources.421.16Pretreatment standards for new sources.Subpart B—Primary Aluminum Smelting Subcategory421.20Applicability: description of the primary aluminum smelting subcategory.421.21Specialized definitions.421.22Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.23Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.24Standards of performance for new sources.421.25[Reserved]421.26Pretreatment standards for new sources.421.27[Reserved]Subpart C—Secondary Aluminum Smelting Subcategory421.30Applicability: Description of the secondary aluminum smelting subcategory.421.31Specialized definitions.421.32Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.33Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.34Standards of performance for new sources.421.35Pretreatment standards for existing sources.421.36Pretreatment standards for new sources.421.37[Reserved]Subpart D—Primary Copper Smelting Subcategory421.40Applicability: Description of the primary copper smelting subcategory.421.41Specialized definitions.421.42Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.43Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.44Standards of performance for new sources.421.45[Reserved]421.46Pretreatment standards for new sources.421.47[Reserved]Subpart E—Primary Electrolytic Copper Refining Subcategory421.50Applicability: Description of the primary electrolytic copper refining subcategory.421.51Specialized definitions.421.52Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.53Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.54Standards of performance for new sources.421.55[Reserved]421.56Pretreatment standards for new sources.421.57[Reserved]Subpart F—Secondary Copper Subcategory421.60Applicability: Description of the secondary copper subcategory.421.61Specialized definitions.421.62Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.63Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.64Standards of performance for new sources.421.65Pretreatment standards for existing sources.421.66Pretreatment standards for new sources.421.67[Reserved]Subpart G—Primary Lead Subcategory421.70Applicability: Description of the primary lead subcategory.421.71Specialized definitions.421.72Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.73Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.74Standards of performance for new sources.421.75Pretreatment standards for existing sources.421.76Pretreatment standards for new sources.421.77[Reserved]Subpart H—Primary Zinc Subcategory421.80Applicability: Description of the primary zinc subcategory.421.81Specialized definitions.421.82Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.83Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.84Standards of performance for new sources.421.85Pretreatment standards for existing sources.421.86Pretreatment standards for new sources.421.87[Reserved]Subpart I—Metallurgical Acid Plants Subcategory421.90Applicability: Description of the metallurgical acid plants subcategory.421.91Specialized definitions.421.92Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.93Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.94Standards of performance for new sources.421.95Pretreatment standards for existing sources.421.96Pretreatment standards for new sources.421.97[Reserved]Subpart J—Primary Tungsten Subcategory421.100Applicability: Description of the primary tungsten subcategory.421.101Specialized definitions.421.102Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.103Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.104Standards of performance for new sources.421.105Pretreatment standards for existing sources.421.106Pretreatment standards for new sources.421.107[Reserved]Subpart K—Primary Columbium-Tantalum Subcategory421.110Applicability: Description of the primary columbium-tantalum subcategory.421.111Specialized definitions.421.112Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.113Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.114Standards of performance for new sources.421.115Pretreatment standards for existing sources.421.116Pretreatment standards for new sources.421.117[Reserved]Subpart L—Secondary Silver Subcategory421.120Applicability: Description of the secondary silver subcategory.421.121Specialized definitions.421.122Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.123Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.124Standards of performance for new sources.421.125Pretreatment standards for existing sources.421.126Pretreatment standards for new sources.421.127[Reserved]Subpart M—Secondary Lead Subcategory421.130Applicability: Description of the secondary lead subcategory.421.131Specialized definitions.421.132Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.133Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.134Standards of performance for new sources.421.135Pretreatment standards for existing sources.421.136Pretreatment standards for new sources.421.137[Reserved]Subpart N—Primary Antimony Subcategory421.140Applicability: Description of the primary antimony subcategory.421.141Specialized definitions.421.142Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.143Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.144Standards of performance for new sources.421.145[Reserved]421.146Pretreatment standards for new sources.421.147[Reserved]Subpart O—Primary Beryllium Subcategory421.150Applicability: Description of the primary beryllium subcategory.421.151Specialized definitions.421.152Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.153Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.154Standards of performance for new sources.421.155[Reserved]421.156Pretreatment standards for new sources.421.157[Reserved]Subpart P—Primary and Secondary Germanium and Gallium Subcategory421.180Applicability: Description of the primary and secondary germanium and gallium subcategory.421.181Specialized definitions.421.182Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.183Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.184Standards of performance for new sources.421.185Pretreatment standards for existing sources.421.186Pretreatment standards for new sources.421.187[Reserved]Subpart Q—Secondary Indium Subcategory421.190Applicability: Description of the secondary indium subcategory.421.191Specialized definitions.421.192-421.193[Reserved]421.194Standards of performance for new sources.421.195Pretreatment standards for existing sources.421.196Pretreatment standards for new sources.421.197[Reserved]Subpart R—Secondary Mercury Subcategory421.200Applicability: Description of the secondary mercury subcategory.421.201Specialized definitions.421.202-421.203[Reserved]421.204Standards of performance for new sources.421.205[Reserved]421.206Pretreatment standards for new sources.421.207[Reserved]Subpart S—Primary Molybdenum and Rhenium Subcategory421.210Applicability: Description of the primary molybdenum and rhenium subcategory.421.211Specialized definitions.421.212Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.213Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.214Standards of performance for new sources.421.215[Reserved]421.216Pretreatment standards for new sources.421.217[Reserved]Subpart T—Secondary Molybdenum and Vanadium Subcategory421.220Applicability: Description of the secondary molybdenum and vanadium subcategory.421.221Specialized definitions.421.222Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.223Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.224Standards of performance for new sources.421.225[Reserved]421.226Pretreatment standards for new sources.421.227[Reserved]Subpart U—Primary Nickel and Cobalt Subcategory421.230Applicability: Description of the primary nickel and cobalt subcategory.421.231Specialized definitions.421.232Effuent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.233Effuent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.234Standards of performance for new sources.421.235[Reserved]421.236Pretreatment standards for new sources.421.237[Reserved]Subpart V—Secondary Nickel Subcategory421.240Applicability: Description of the secondary nickel subcategory.421.241Specialized definitions.421.242-421.243[Reserved]421.244Standards of performance for new sources.421.245Pretreatment standards for existing sources.421.246Pretreatment standards for new sources.421.247[Reserved]Subpart W—Primary Precious Metals and Mercury Subcategory421.250Applicability: Description of the primary precious metals and mercury subcategory.421.251Specialized definitions.421.252Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.253Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.254Standards of performance for new sources.421.255[Reserved]421.256Pretreatment standards for new sources.421.257[Reserved]Subpart X—Secondary Precious Metals Subcategory421.260Applicability: Description of the secondary precious metals subcategory.421.261Specialized definitions.421.262Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.263Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.264Standards of performance for new sources.421.265Pretreatment standards for existing sources.421.266Pretreatment standards for new sources.421.267[Reserved]Subpart Y—Primary Rare Earth Metals Subcategory421.270Applicability: Description of the primary rare earth metals subcategory.421.271Specialized definitions.421.272-421.273[Reserved]421.274Standards of performance for new sources.421.275Pretreatment standards for existing sources.421.276Pretreatment standards for new sources.421.277[Reserved]Subpart Z—Secondary Tantalum Subcategory421.280Applicability: Description of the secondary tantalum subcategory.421.281Specialized definitions.421.282Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.283Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.284Standards of performance for new sources.421.285[Reserved]421.286Pretreatment standards for new sources.421.287[Reserved]Subpart AA—Secondary Tin Subcategory421.290Applicability: Description of the secondary tin subcategory421.291Specialized definitions.421.292Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.293Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.294Standards of performance for new sources.421.295Pretreatment standards for existing sources.421.296Pretreatment standards for new sources.421.297[Reserved]Subpart AB—Primary and Secondary Titanium Subcategory421.300Applicability: Description of the primary and secondary titanium subcategory.421.301Specialized definitions.421.302Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.303Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.304Standards of performance for new sources.421.305Pretreatment standards for existing sources.421.306Pretreatment standards for new sources.421.307[Reserved]Subpart AC—Secondary Tungsten and Cobalt Subcategory421.310Applicability: Description of the secondary tungsten and cobalt subcategory.421.311Specialized definitions.421.312Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.313Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.314Standards of performance for new sources.421.315Pretreatment standards for existing sources.421.316Pretreatment standards for new sources.421.317[Reserved]Subpart AD—Secondary Uranium Subcategory421.320Applicability: Description of the secondary uranium subcategory.421.321Specialized definitions.421.322Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.323Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.324Standards of performance for new sources.421.325[Reserved]421.326Pretreatment standards for new sources.421.327[Reserved]Subpart AE—Primary Zirconium and Hafnium Subcategory421.330Applicability: Description of the primary zirconium and hafnium subcategory.421.331Specialized definitions.421.332Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.421.333Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable.421.334Standards of performance for new sources.421.335[Reserved]421.336Pretreatment standards for new sources.421.337[Reserved]Authority:

Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) and the Water Quality Act of 1987 (the “Act”); 33 U.S.C. 1311, 1314 (b), (c), (e), and (g), 1316 (b) and (c), 1317 (b) and (c), 1318 and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217; 101 Stat. 7, Pub. L. 100-4.