Wis. Admin. Code Department of Natural Resources NR 270.032

Current through November 25, 2024

Section NR 270.032 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)

Except as provided in ss. NR 270.0015, 270.002 and 270.003 and 40 CFR 125.30- 125.32, any existing point source subject to this subcategory shall achieve the following effluent limitations representing the degree of effluent reduction attainable after application of the best practicable control technology currently available (BPT):

(1) The concentration of pollutants discharged in mine drainage from mines either open-pit or underground, from which uranium, radium and vanadium ores are produced excluding mines using in-situ leach methods may not exceed:

Effluent characteristic	[BPT] Effluent limitations
	Maximum for any 1 day	Average of daily values for 30 consecutive days
Milligrams per liter
TSS	30.0	20.0
COD	200.0	100.0
Zn	1.0	0.5
Ra2261 (dissolved)	10.0	3.0
Ra2261 (total)	30.0	10.0
U	4.0	2.0
pH	(2)	(2)

¹ Values in picocuries per liter (pCi/1).

² Within the range 6.0 to 9.0.

(2) The concentrations of pollutants discharged from mills using the acid leach, alkaline leach or combined acid and alkaline leach process for the extraction of uranium, radium and vanadium including mill-mine facilities and mines using in-situ leach methods may not exceed:

Effluent characteristic	[BPT] Effluent limitations
	Maximum for any 1 day	Average of daily values for 30 consecutive days
Milligrams per liter
TSS	30.0	20.0
COD	-	500.0
As	1.0	0.5
Zn	1.0	0.5
Ra2261 (dissolved)	10.0	3.0
Ra2261 (total)	30.0	10.0
NH3	-	100.0
pH	(2)	(2)

Wis. Admin. Code Department of Natural Resources NR 270.032

Cr. Register, October, 1986, No. 370, eff. 11-1-86.