40 CFR 440.54: New source performance standards (NSPS).

Except as provided in subpart L of this part any new source subject to this subpart must achieve the following NSPS representing the degree of effluent reduction attainable by the applications of the best available demonstrated technology (BADT):

(a) The concentration of pollutants discharged in mine drainage from mines obtaining titanium ores from lode deposits shall not exceed:

Effluent characteristic Effluent limitations

Maximum for any 1 day Average of daily values for 30 consecutive days

Milligrams per liter

Fe 2.0 1.0

pH (1) (1)

TSS 30.0 20.0

1 Within the range of 6.0 to 9.1.

(b) The concentration of pollutants discharged from mills beneficiating titanium ores by electrostatic methods, magnetic and physical methods, or flotation methods shall not exceed:

Effluent characteristic Effluent limitations

Maximum for any 1 day Average of daily values for 30 consecutive days

Milligrams per liter

Zn 1.0 0.5

pH (1) (1)

TSS 30.0 20.0

1 Within the range of 6.0 to 9.1.

(c) The concentration of pollutants discharged in mine drainage from mines engaged in the dredge mining of placer deposits of sands containing rutile, ilmenite, leucoxene, monazite, zircon and the milling techniques employed in conjunction with the dredge mining activity (milling techniques employed include the use of wet gravity methods in conjunction with electrostatic or magnetic methods) shall not exceed:

Effluent characteristic Effluent limitations

Maximum for any 1 day Average of daily values for 30 consecutive days

Milligrams per liter

Fe 2.0 1.0

pH (1) (1)

TSS 30.0 20.0

1 Within the range of 6.0 to 9.1.