40 C.F.R. § 421.144

Current through October 31, 2024

Section 421.144 - Standards of performance for new sources

Any new source subject to this subpart shall achieve the following new source performance standards:

(a) Sodium Antimonate Autoclave Wastewater.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of antimony contained in sodium antimonate product
Antimony	30.150	13.440
Arsenic	21.720	9.687
Mercury	2.344	0.937
Total suspended solids	234.400	187.500
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(b) Fouled Anolyte.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of antimony metal produced by electrowinning
Antimony	30.150	13.440
Arsenic	21.720	9.687
Mercury	2.344	0.937
Total suspended solids	234.400	187.500
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

(c) Cathode Antimony Wash Water.

NSPS for the Primary Antimony Subcategory

Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
	mg/kg (pounds per million pounds) of antimony metal produced by electrowinning
Antimony	60.310	26.870
Arsenic	43.430	19.370
Mercury	4.687	1.875
Total suspended solids	468.700	375.000
pH	(1)	(1)

¹ Within the range of 7.5 to 10.0 at all times.

40 C.F.R. §421.144