[Code of Federal Regulations] [Title 40, Volume 27] [Revised as ofJuly 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR471.101] [Page 795-796] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 471--NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY--Table of Contents Subpart J--Metals Powders Subcategory Sec. 471.101 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT). Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): (a) Metal powder production atomization wastewater. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder wet atomized --------------- Copper...................................... 9.58 5.04 Cyanide..................................... 1.46 0.605 Lead........................................ 2.12 1.01 Oil and grease.............................. 101 60.5 TSS......................................... 207 98.3 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (b) Sizing spent emulsion. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder sized -------------- Copper........................................ 0.028 0.015 Cyanide....................................... 0.004 0.002 Lead.......................................... 0.006 0.003 Oil and grease................................ 0.292 0.175 TSS........................................... 0.599 0.285 pH............................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (c) Oil-resin impregnation wastewater--Subpart J--BPT. There shall be no discharge of process wastewater pollutants. (d) Steam treatment wet air pollution control scrubber blowdown. [[Page 796]] Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of power metallurgy parts steam treated --------------- Copper...................................... 1.51 0.792 Cyanide..................................... 0.230 0.095 Lead........................................ 0.333 0.159 Oil and grease.............................. 15.9 9.51 TSS......................................... 32.5 15.5 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (e) Tumbling, burnishing and cleaning wastewater. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder metallurgy parts tumbled, burnished, or cleaned --------------- Copper...................................... 8.36 4.40 Cyanide..................................... 1.28 0.528 Lead........................................ 1.85 0.880 Oil and grease.............................. 88.0 52.800 TSS......................................... 181 85.8 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (f) Sawing or grinding spent neat oils.--Subpart J--BPT. There shall be no discharge of process wastewater pollutants. (g) Sawing or grinding spent emulsion. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with emulsion --------------- Copper...................................... 0.035 0.018 Cyanide..................................... 0.005 0.002 Lead........................................ 0.008 0.004 Oil and grease.............................. 0.362 0.217 TSS......................................... 0.742 0.353 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (h) Sawing or grinding contact cooling water. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder metallurgy parts sawed or ground with contact cooling --------------- Copper...................................... 3.08 1.62 Cyanide..................................... 0.470 0.195 Lead........................................ 0.681 0.324 Oil and grease.............................. 32.4 19.5 TSS......................................... 66.4 31.6 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (i) Hot pressing contact cooling water. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder cooled after pressing --------------- Copper...................................... 16.7 8.80 Cyanide..................................... 2.55 1.06 Lead........................................ 3.70 1.76 Oil and grease.............................. 176 106 TSS......................................... 361 172 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (j) Mixing wet air pollution control scrubber blowdown. Subpart J--BPT ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ mg/off-kg (pounds per million off-pounds) of powder mixed --------------- Copper...................................... 15.0 7.90 Cyanide..................................... 2.29 0.948 Lead........................................ 3.32 1.58 Oil and grease.............................. 158 94.8 TSS......................................... 324 154 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.5 to 10.0 at all times. (k) Degreasing spent solvents.--Subpart J--BPT. There shall be no discharge of process wastewater pollutants. [50 FR 34270, Aug. 23, 1985; 51 FR 2889, Jan. 22, 1986] [[Page 797]]