Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR 434.25: New source performance standards (NSPS).

The following new source performance standards (NSPS) shall be achieved by any new source coal preparation plant and coal preparation plant associated areas, as indicated:
(a) Except as provided in 40 CFR 401.17 and §§ 434.61, 434.62 and 434.63 of this part, the following new source performance standards shall apply to discharges from new source coal preparation plants and new source coal preparation plant associated areas, if such discharges normally exhibit a pH of less than 6.0 prior to treatment:
NSPS Effluent Limitations (mg/l)
Pollutant or pollutant property Maximum for any 1 day Average of daily values for 30 consecutive days
Iron, total 6.0 3.0
Manganese, total 4.0 2.0
TSS 70 35
pH (1) (1)
1 6.0-9.0 at all times.
(b) Except as provided in 40 CFR 401.17 and §§ 434.61, 434.62 and 434.63 of this part, the following new source performance standards shall apply to discharges from new source coal preparation plants and new source coal preparation plant associated areas, if such discharges normally exhibit a pH equal to or greater than 6.0 prior to treatment:
NSPS Effluent Limitations (mg/l)
Pollutant or pollutant property Maximum for any 1 day Average of daily values for 30 consecutive days
Iron, total 6.0 3.0
TSS 70 35
pH (1) (1)
1 6.0-9.0 at all times.

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS
PART 434—COAL MINING POINT SOURCE CATEGORY BPT, BAT, BCT LIMITATIONS AND NEW SOURCE PERFORMANCE STANDARDS
Subpart B—Coal Preparation Plants and Coal Preparation Plant Associated Areas

The following new source performance standards (NSPS) shall be achieved by any new source coal preparation plant and coal preparation plant associated areas, as indicated:

(a) Except as provided in 40 CFR 401.17 and §§ 434.61, 434.62 and 434.63 of this part, the following new source performance standards shall apply to discharges from new source coal preparation plants and new source coal preparation plant associated areas, if such discharges normally exhibit a pH of less than 6.0 prior to treatment:

NSPS Effluent Limitations (mg/l)

Pollutant or pollutant property Maximum for any 1 day Average of daily values for 30 consecutive days

Iron, total 6.0 3.0

Manganese, total 4.0 2.0

TSS 70 35

pH (1) (1)

1 6.0-9.0 at all times.

(b) Except as provided in 40 CFR 401.17 and §§ 434.61, 434.62 and 434.63 of this part, the following new source performance standards shall apply to discharges from new source coal preparation plants and new source coal preparation plant associated areas, if such discharges normally exhibit a pH equal to or greater than 6.0 prior to treatment: