40 CFR § 434.83 - Effluent limitations attainable by application of the best available technology economically achievable (BAT).

---
identifier: "/us/cfr/t40/s434.83"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 434.83 - Effluent limitations attainable by application of the best available technology economically achievable (BAT)."
title_number: 40
title_name: "Protection of Environment"
section_number: "434.83"
section_name: "Effluent limitations attainable by application of the best available technology economically achievable (BAT)."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "434"
part_name: "COAL MINING POINT SOURCE CATEGORY BPT, BAT, BCT LIMITATIONS AND NEW SOURCE PERFORMANCE STANDARDS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "33 U.S.C. 1311 1314(b), (c), (e), and (g), 1316(b) and (c), 1317(b) and (c), and 1361."
regulatory_source: "50 FR 41305, Oct. 9, 1985, unless otherwise noted."
cfr_part: "434"
---


# 434.83 Effluent limitations attainable by application of the best available technology economically achievable (BAT).

Except as provided in 40 CFR 125.30 through 125.32, any existing western coal mining operation with drainage subject to this subpart must meet the effluent limitations in § 434.82.