433 Subpart J—Copper, Lead, Zinc, Gold, Silver, and Molyb- Denum

Environmental Protection Agency § 440.102

§ 440.91 [Reserved] mining operations) or mines and mills that use gravity separation methods to § 440.92 Effluent limitations rep- extract silver from placer ores are not resenting the degree of effluent re- covered under this part. duction attainable by the applica- (d) The provisions of this subpart tion of the best practicable control technology currently available shall not apply to discharges from the (BPT). [Reserved] Quartz Hill Molybdenum Project in the Tongass National Forest, Alaska. § 440.93 Effluent limitations rep- resenting the degree of effluent re- [47 FR 54609, Dec. 3, 1982, as amended at 53 duction attainable by the applica- FR 18788, May 24, 1988] tion of the best available technology economically achievable § 440.101 [Reserved] (BAT). [Reserved] § 440.102 Effluent limitations rep- § 440.94 New source performance resenting the degree of effluent re- standards (NSPS). [Reserved] duction attainable by the application of the best practicable control § 440.95 Effluent limitations rep- technology (BPT). resenting the degree of effluent re- Except as provided in subpart L of duction attainable by the applica- this part and 40 CFR 125.30 through tion of the best conventional pollut- ant control technology (BCT). [Re- 125.32, any existing point source sub- served] ject to this subpart must achieve the following effluent limitations rep- Subpart J—Copper, Lead, Zinc, resenting the degree of effluent reduc- Gold, Silver, and Molyb- tion attainable by the application of the best practicable control technology denum Ores Subcategory currently available (BPT): § 440.100 Applicability; description of (a) The concentration of pollutants the copper, lead, zinc, gold, silver, discharged in mine drainage from and molybdenum ores subcategory. mines operated to obtain copper bear- (a) The provisions of this subpart J ing ores, lead bearing ores, zinc bearing are applicable to discharges from— ores, gold bearing ores, or silver bear- (1) Mines that produce copper, lead, ing ores, or any combination of these zinc, gold, silver, or molybdenum bear- ores open-pit or underground oper- ing ores, or any combination of these ations other than placer deposits shall ores from open-pit or underground op- not exceed: erations other than placer deposits; Effluent limitations (2) Mills that use the froth-flotation Average of process alone or in conjunction with Effluent characteristic Maximum for daily values other processes, for the beneficiation of any 1 day for 30 con- copper, lead, zinc, gold, silver, or mo- secutive days lybdenum ores, or any combination of Milligrams per liter these ores; (3) Mines and mills that use dump, TSS ...... 30 20 heap, in-situ leach, or vat-leach proc- Cu ...... 30 .15 esses to extract copper from ores or ore Zn ...... 1.5 .75 Pb ...... 6 .3 waste materials; and Hg ...... 002 .001 (4) Mills that use the cyanidation pH ...... (1) (1) process to extract gold or silver. 1 Within the range 6.0 to 9.0. (b) Discharge from mines or mines and mills that use gravity separation (b) The concentration of pollutants methods (including placer or dredge discharged from mills which employ mining or concentrating operations, the froth flotation process alone or in and hydraulic mining operations) to conjunction with other processes, for extract gold ores are regulated under the beneficiation of copper ores, lead subpart M. ores, zinc ores, gold ores, or silver ores, (c) Discharge from mines (including or any combination of these ores shall placer or dredge mining, and hydraulic not exceed:

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