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278 Subpart B—Coal Preparation Plants and Coal Preparation Plant

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278 Subpart B—Coal Preparation Plants and Coal Preparation Plant § 434.20 40 CFR Ch. I (7–1–16 Edition) treat coal rine drainage, coal prepara- ration plants and coal preparation tion plant process wastewater, or plant association areas, as indicated, drainage from coal preparation plant including discharges which are associated areas, which remove pollut- pumped, siphoned, or drained from the ants regulated by this part from such coal preparation plant water circuit waters. This includes all pipes, chan- and coal storage, refuse storage, and nels, ponds, basins, tanks and all other ancillary areas related to the cleaning equipment serving such structures. or beneficiation of coal of any rank in- (p) The term ‘‘coal refuse disposal cluding, but not limited to, bitu- pile’’ means any coal refuse deposited minous, lignite, and anthracite. on the earth and intended as perma- nent dispoal or long-term storage § 434.21 [Reserved] (greater than 180 days) of such mate- rial, but does not include coal refuse § 434.22 Effluent limitation guidelines deposited within the active mining representing the degree of effluent area or coal refuse never removed from reduction attainable by the applica- tion of the best practicable control the active mining area. technology currently available (q) The term ‘‘controlled surface (BPT). mine drainage’’ means any surface mine drainage that is pumped or si- (a) Except as provided in 40 CFR phoned from the active mining area. 125.30–125.32, 40 CFR 401.17, and §§ 434.61, (r) The term ‘‘abandoned mine’’ 434.62 and 434.63 of this part, the fol- means a mine where mining operations lowing limitations establish the con- have occurred in the past and centration or quality of pollutants (1) The applicable reclamation bond which may be discharged by any exist- or financial assurance has been re- ing coal preparation plant and coal leased or forfeited or preparation plant associated areas sub- (2) If no reclamation bond or other fi- ject to the provisions of this subpart nancial assurance has been posted, no after application of the best prac- mining operations have occurred for ticable control technology currently five years or more. available if discharges from such point (s) The term ‘‘1-year, 24-hour precipi- sources normally exhibit a pH of less tation event’’ means the maximum 24- than 6.0 prior to treatment: hour precipitation event with a prob- able recurrence interval of once in one BPT EFFLUENT LIMITATIONS year as defined by the National Weath- Average of er Service and Technical Paper No. 40, Maximum for daily values Pollutant or pollutant property any 1 day for 30 con- ‘‘Rainfall Frequency Atlas of the secutive days U.S.,’’ May 1961, or equivalent regional or rainfall probability information de- Concentration in mg/l veloped therefrom. Iron, total ............................... 7 .0 3 .5 (t) The Term ‘‘2-year, 24-hour precipi- Manganese, total ................... 4 .0 2 .0 tation event’’ means the maximum 24- TSS ........................................ 70 35 hour precipitation event with a prob- pH .......................................... 1 1 able recurrence interval of once in two 1 Within the range of 6.0 to 9.0 at all times. years as defined by the National (b) Except as provided in 40 CFR Weather Service and Technical Paper 125.30–125.32, 40 CFR 401.17 and §§ 434.61 No. 40, ‘‘Rainfall Frequency Atlas of and 434.63 of this part, the following the U.S., ‘‘May 1961, or equivalent re- limitations establish the concentration gional or rainfall probability informa- or quality of pollutants which may be tion developed therefrom. discharged by any existing coal prepa- ration plant and coal preparation plant Subpart B—Coal Preparation associated areas subject to the provi- Plants and Coal Preparation sions of this subpart after application Plant Associated Areas of the best practicable control tech- nology currently available if dis- § 434.20 Applicability. charges from such point sources nor- The provisions of this subpart are ap- mally exhibit a pH equal to or greater plicable to discharges from coal prepa- than 6.0 prior to treatment: 278 VerDate Sep<11>2014 09:00 Sep 21, 2016 Jkt 238182 PO 00000 Frm 00288 Fmt 8010 Sfmt 8010 Y:\SGML\238182.XXX 238182 Lhorne on DSK30JT082PROD with CFR.
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