View all text of Subpart S [§ 421.210 - § 421.217]

§ 421.216 - Pretreatment standards for new sources.

Except as provided in 40 CFR 403.7, any new source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources. The mass of wastewater pollutants in primary molybdenum and rhenium process wastewater introduced into a POTW shall not exceed the following values:

(a) Molybdenum sulfide leachate.

PSNS for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of molybdenum sulfide leached Arsenic0.6440.287 Lead0.1300.060 Nickel0.2550.171 Selenium0.3800.171 Molybdenum[Reserved][Reserved]. Ammonia (as N)61.72027.130 Fluoride16.2109.214

(b) Roaster SO2 scrubber.

PSNS for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of molybdenum sulfide roasted Arsenic2.3341.041 Lead0.4700.218 Nickel0.9240.621 Selenium1.3770.621 Molybdenum[Reserved][Reserved]. Ammonia (as N)223.80098.390 Fluoride58.77033.410

(c) Molybdic oxide leachate.

PSNS for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of molybdenum contained in molybdic oxide leached Arsenic16.1007.182 Lead3.2441.506 Nickel6.3714.286 Selenium9.4994.286 Molybdenum[Reserved][Reserved]. Ammonia (as N)1,544.000678.800 Fluoride405.400230.500

(d) Hydrogen reduction furnace scrubber.

PSNS for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of molybdenum metal powder produced Arsenic3.1831.420 Lead0.6410.298 Nickel1.2600.847 Selenium1.8780.847 Molybdenum[Reserved][Reserved]. Ammonia (as N)305.300134.200 Fluoride80.15045.570

(e) Depleted rhenium scrubbing solution.

PSNS for the Primary Molybdenum and Rhenium Subcategory

Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average mg/kg (pounds per million pounds) of molybdenum sulfide roasted Arsenic0.9950.444 Lead0.2010.093 Nickel0.3940.265 Selenium0.5870.265 Molybdenum[Reserved][Reserved]. Ammonia (as N)95.44041.960 Fluoride25.06014.250
[50 FR 38355, Sept. 20, 1985, as amended at 55 FR 31702, 31703, Aug. 3, 1990]