GroundRules
40 CFR 421.204: Standards of performance for new sources.
Where this section sits in the code
- Title 40—Protection of Environment
- CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
- SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
- PART 421—NONFERROUS METALS MANUFACTURING POINT SOURCE CATEGORY
- Subpart R—Secondary Mercury Subcategory
Any new source subject to this subpart shall achieve the following new source performance standards:
(a) Spent battery electrolyte.
NSPS for the Secondary Mercury Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of mercury produced from batteries
Lead 0.030 0.014
Mercury 0.016 0.006
Total suspended solids 1.590 1.272
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(b) Acid wash and rinse water.
NSPS for the Secondary Mercury Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of mercury washed and rinsed
Lead 0.00056 0.00026
Mercury 0.00030 0.00012
Total suspended solids 0.03000 0.02400
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
(c) Furnace wet air pollution control.
NSPS for the Secondary Mercury Subcategory
Pollutant or pollutant property Maximum for any 1 day Maximum for monthly average
mg/kg (pounds per million pounds) of mercury processed through furnace
Lead 0.000 0.000
Mercury 0.000 0.000
Total suspended solids 0.000 0.000
pH (1) (1)
1 Within the range of 7.5 to 10.0 at all times.
Collected 2026-08-27T02:26:04Z. Source file · JSON