[Code of Federal Regulations] [Title 40, Volume 29] [Revised as of July 1, 2007] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR464.32] [Page 572-575] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 464_METAL MOLDING AND CASTING POINT SOURCE CATEGORY --Table of Contents Subpart C_Ferrous Casting Subcategory Sec. 464.32 Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available. Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must [[Page 573]] achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available, except that non-continuous dischargers shall not be subject to the maximum day and maximum for monthly average mass (kg/1,000 kkg or lb/million lb of metal poured; kg/ 1,000 kkg or lb/million lb of sand reclaimed; kg/62.3 million Sm\3\ or lb/billion SCF of air scrubbed) effluent limitations for copper, lead, zinc, total phenols, oil and grease, and TSS. For non-continuous dischargers, annual average mass limitations and maximum day and maximum for monthly average concentration (mg/l) limitations shall apply. Concentration limitations and annual average mass limitations shall only apply to non-continuous dischargers. (a) Casting Cleaning Operations. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/1,000 kkg (pounds per million pounds) of metal poured --------------------------- Copper (T).................................. 0.0129 0.0071 Lead (T).................................... 0.0353 0.0174 Zinc (T).................................... 0.0656 0.025 Oil and grease.............................. 1.34 0.446 TSS......................................... 1.7 0.67 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ Copper (T)........................... 0.29 0.16 0.0029 Lead (T)............................. 0.79 0.39 0.0098 Zinc (T)............................. 1.47 0.56 0.0179 Oil and grease....................... 30 10 0.223 TSS.................................. 38 15 0.446 pH................................... (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/1,000 kkg (pounds per million pounds) of metal poured. \2\ These concentrations must be multiplied by the ratio (5.33/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. (b) Casting Quench Operations BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/1,000 kkg (pounds per million pounds) of metal poured --------------------------- Copper (T).................................. 0.0138 0.0076 Lead (T).................................... 0.0376 0.0185 Zinc (T).................................... 0.0699 0.0266 Oil and grease.............................. 1.43 0.476 TSS......................................... 1.81 0.713 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ Copper (T)........................... 0.29 0.16 0.0031 Lead (T)............................. 0.79 0.39 0.0105 Zinc (T)............................. 1.47 0.56 0.019 Oil and grease....................... 30 10 0.238 TSS.................................. 38 15 0.476 pH................................... (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/1,000 kkg (pounds per million pounds) of metal poured. \2\ These concentrations must be multiplied by the ratio of (5.7/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. (c) Dust Collection Scrubber Operations. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/62.3 million Sm\3\ (pounds per billion SCF) of air scrubbed ----------------------------- Copper (T)................................ 0.218 0.12 Lead (T).................................. 0.593 0.293 Zinc (T).................................. 1.1 0.421 Total phenols............................. 0.656 0.225 Oil and grease............................ 22.5 7.51 TSS....................................... 28.5 11.3 pH........................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ (mg/l) \2\ Copper (T)........................... 0.29 0.16 0.0488 Lead (T)............................. 0.79 0.39 0.165 Zinc (T)............................. 1.47 0.56 0.3 Total phenols........................ 0.86 0.3 0.15 Oil and grease....................... 30 10 3.76 TSS.................................. 38 15 7.51 pH................................... (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/62.3 million Sm\3\ (pounds per billion SCF) of air scrubbed. \2\ These concentrations must be multiplied by the ratio (0.090/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. [[Page 574]] (d) Grinding Scrubber Operations. No discharge of process wastewater pollutants to navigable waters. (e) Investment Casting. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/1,000 kkg (pounds per million pounds) of metal poured ----------------------------- Copper (T)................................ 3.19 1.76 Lead (T).................................. 8.7 4.3 Zinc (T).................................. 16.2 6.17 Oil and grease............................ 330 110 TSS....................................... 419 165 pH........................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ ......... Copper (T)......................... 0.29 0.16 0.716 Lead (T)........................... 0.79 0.39 2.42 Zinc (T)........................... 1.47 0.56 4.41 Oil and grease..................... 30 10 55.1 TSS................................ 38 15 110 pH................................. (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/1,000 kkg (pounds per million pounds) of metal poured. \2\ These concentrations must be multiplied by the ratio of (1,320/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. (f) Melting Furnace Scrubber Operations. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/62.3 million Sm\3\ (pounds per billion SCF) of air scrubbed ----------------------------- Copper (T)................................ 1.02 0.561 Lead (T).................................. 2.77 1.37 Zinc (T).................................. 5.15 1.96 Total phenols............................. 3.01 1.05 Oil and grease............................ 105 35 TSS....................................... 133 52.6 pH........................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ Copper (T)......................... 0.29 0.16 0.228 Lead (T)........................... 0.79 0.39 0.771 Zinc (T)........................... 1.47 0.56 1.4 Total phenols...................... 0.86 0.3 0.701 Oil and grease..................... 30 10 17.5 TSS................................ 38 15 35 pH................................. (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/62.3 million Sm\3\ (pounds per billion SCF) or air scrubbed. \2\ These concentrations must be multiplied by the ratio of (0.42/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 SCF of air scrubbed) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. (g) Mold Cooling Operations. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/1,000 kkg (pounds per million pounds) of metal poured ----------------------------- Copper (T)................................ 0.0428 0.0236 Lead (T).................................. 0.117 0.0576 Zinc (T).................................. 0.217 0.0827 Oil and grease............................ 4.43 1.48 TSS....................................... 5.61 2.22 pH........................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ Copper (T)........................... 0.29 0.16 0.0096 Lead (T)............................. 0.79 0.39 0.0325 Zinc (T)............................. 1.47 0.56 0.0591 Oil and grease....................... 30 10 0.738 TSS.................................. 38 15 1.48 pH................................... (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/1,000 kkg (pounds per million pounds) of metal poured \2\ These concentrations must be multiplied by the ratio of (17.7/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. \3\Within the range of 7.0 to 10.0 at all times. (h) Slag Quench Operations. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/1,000 kkg (pounds per million pounds) of metal poured --------------------------- Cooper (T).................................. 0.0527 0.0291 Lead (T).................................... 0.144 0.0709 Zinc (T).................................... 0.267 0.102 Oil and grease.............................. 5.46 1.82 TSS......................................... 6.91 2.73 pH.......................................... (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ Copper (T)........................... 0.29 0.16 0.0118 Lead (T)............................. 0.79 0.39 0.04 Zinc (T)............................. 1.47 0.56 0.0728 Oil and grease....................... 30 10 0.909 TSS.................................. 38 15 1.82 pH................................... (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/1,000 kkg (pounds per million pounds) of metal poured. [[Page 575]] \2\ These concentrations must be multiplied by the ratio of (21.8/x) where x is the actual normalized process wasterwater flow (in gallons per 1,000 pounds of metal poured) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. (i) Wet Sand Reclamation Operations. BPT Effluent Limitations ------------------------------------------------------------------------ Maximum for Pollutant or pollutant property Maximum for monthly any 1 day average ------------------------------------------------------------------------ kg/1,000 kkg (pounds per million pounds) of sand reclaimed ----------------------------- Cooper (T)................................ 0.217 0.12 Lead (T).................................. 0.59 0.291 Zinc (T).................................. 1.1 0.418 Total phenols............................. 0.642 0.224 Oil and grease............................ 22.4 7.47 TSS....................................... 28.4 11.2 pH........................................ (\1\) (\1\) ------------------------------------------------------------------------ \1\ Within the range of 7.0 to 10.0 at all times. ------------------------------------------------------------------------ Maximum for Annual Maximum for monthly average any 1 day average \1\ ------------------------------------------------------------------------ (mg/l) \2\ (mg/l) \2\ Cooper (T)........................... 0.29 0.16 0.0485 Lead (T)............................. 0.79 0.39 0.164 Zinc (T)............................. 1.47 0.56 0.299 Total phenols........................ 0.86 0.3 0.149 Oil and grease....................... 30 10 3.73 TSS.................................. 38 15 7.47 pH................................... (\3\) (\3\) (\3\) ------------------------------------------------------------------------ \1\ kg/1,000 kkg (pounds per million pounds) of sand reclaimed. \2\ These concentrations must be multiplied by the ratio of (89.5/x) where x is the actual normalized process wastewater flow (in gallons per 1,000 pounds of sand reclaimed) for a specific plant. \3\ Within the range of 7.0 to 10.0 at all times. [50 FR 45247, Oct. 30, 1985; 51 FR 21761, June 16, 1986]