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Title 40 Part 434 → Subpart H → §434.81

Title 40 → Chapter I → Subchapter N → Part 434 → Subpart H → §434.81

Electronic Code of Federal Regulations e-CFR

Title 40 Part 434 → Subpart H → §434.81

e-CFR data is current as of December 12, 2019

Title 40Chapter ISubchapter NPart 434Subpart H → §434.81


Title 40: Protection of Environment
PART 434—COAL MINING POINT SOURCE CATEGORY BPT, BAT, BCT LIMITATIONS AND NEW SOURCE PERFORMANCE STANDARDS
Subpart H—Western Alkaline Coal Mining


§434.81   Applicability.

(a) This subpart applies to alkaline mine drainage at western coal mining operations from reclamation areas, brushing and grubbing areas, topsoil stockpiling areas, and regraded areas.

(b) This subpart applies to drainage at western coal mining operations from reclamation areas, brushing and grubbing areas, topsoil stockpiling areas, and regraded areas where the discharge, before any treatment, meets all the following requirements:

(1) pH is equal to or greater than 6.0;

(2) Dissolved iron concentration is less than 10 mg/L; and

(3) Net alkalinity is greater than zero.

(c) The effluent limitations in this subpart apply until the appropriate SMCRA authority has authorized bond release.


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