SUBPART G-Continued [BPT effluent limitations for mechanical pulp facilities where the integrated production of pulp and fine paper at groundwood mills

occurs)

(d) The following limitations estab- this section and shall be calculated lish the quantity or quality of pollut- using the proportion of the mill's total ants or pollutant properties, controlled production due to use of logs which are by this section, resulting from the use subject to such operations. Non-continof log flumes or log ponds, which may uous dischargers shall not be subject to be discharged by a point source subject the maximum day and average of 30 to the provisions of this subpart. These consecutive days limitations but shall limitations are in addition to the limi- be subject to the annual average efflutations set forth in paragraph (a) of ent limitations:

SUBPART G [BPT effluent limitations for mechanical pulp facilities where pulp and paper at groundwood chemi-mechanical mills are

produced]

SUBPART G [BPT effluent limitations for mechanical pulp facilities where pulp and paper at groundwood mills are produced through the

application of the thermo-mechanical process]

SUBPART G (BPT effluent limitations for mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp

products, and newsprint at groundwood mills occurs]

SUBPART G [BPT effluent limitations for mechanical pulp facilities where the integrated production of pulp and fine paper at groundwood mills

occurs)

(e) For those mills using zinc hydro- issuing authority that they are not sulfite as a bleaching agent in the man- using this bleaching compound. Nonufacturing process, the following efflu- continuous dischargers shall not be ent limitations are to be added to the subject to the maximum day and averbase limitations set forth in paragraph age of 30 consecutive days effluent lim(a) of this section. Permittees not

itations, but shall be subject to annual using zinc hydrosulfite as a bleaching

average effluent limitations: agent must certify to the permit

SUBPART G (BPT effluent limitations for mechanical pulp facilities where pulp and paper at groundwood chemi

mechanical mills are produced]

Pollutant or pollutant property

kg/kkg (or pounds per 1,000 lb) of

product Continuous dischargers

Non-continAverage of Maximum daily values chargers for any 1 for 30 con- (annual day secutive average)

SUBPART G (BPT effluent limitations for mechanical pulp facilities where pulp and paper at groundwood mills are produced through the

application of the thermo-mechanical process)

SUBPART G [BPT effluent limitations for mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp

products, and newsprint at groundwood mills occurs)

paper at groundwood mills are pro- mass limitations in kg/kkg (16/1000 lb), duced through the application of the but shall be subject to concentration thermo-mechanical process; mechan- limitations. Concentration limitations ical pulp facilities where the inte- are only applicable to non-continuous grated production of pulp and coarse dischargers. Pentachlorophenol and paper, molded pulp products, and news

trichlorophenol limitations are only print at groundwood mills occurs; and

applicable at facilities where mechanical pulp facilities where the

chlorophenolic-containing biocides are integrated production of pulp and fine

used. Permittees not using paper at groundwood mills occurs: ex

chlorophenolic-containing biocides cept as provided in 40 CFR 125.30 through 125.32, any existing point

must certify to the permit-issuing ausource subject to this subpart must

thority that they are not using these achieve the following effluent limita

biocides. Zinc limitations are only aptions representing the degree of efflu

plicable at facilities where zinc hydroent reduction attainable by the appli

sulfite is used as a bleaching agent. cation of the best available technology

Permittees not using zinc hydrosulfite economically achievable (BAT), except

as a bleaching agent must certify to that non-continuous dischargers shall the permit issuing authority that they not be subject to the maximum day are not using this bleaching compound:

SUBPART G (BAT effluent limitations for mechanical pulp facilities where pulp and paper at groundwood mills are produced through the

application of the thermo-mechanical process)

SUBPART G (BAT effluent limitations for mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp

products, and newsprint at groundwood mills occurs)

SUBPART G (BAT effluent limitations for mechanical pulp facilities where the integrated production of pulp and fine paper at groundwood mills

occurs

(b) (Reserved]

fluent limitations for BOD5 and TSS,

but shall be subject to annual average $430.75 New source performance

effluent limitations. Also, for non-constandards (NSPS).

tinuous dischargers, concentration lim(a) The following applies to mechan- itations (mg/l) shall apply, where proical pulp facilities where pulp and vided. Concentration limitations will paper at groundwood mills are pro- only apply to non-continuous disduced through the application of the chargers. Pentachlorophenol and thermo-mechanical process; mechan- trichlorophenol limitations are only ical pulp facilities where the inte- applicable at facilities where grated production of pulp and coarse chlorophenolic-containing biocides are paper, molded pulp products, and news- used. Permittees not using print at groundwood mills occurs; and chlorophenolic-containing biocides mechanical pulp facilities where the must certify to the permit-issuing auintegrated production of pulp and fine thority that they are not using these paper at groundwood mills occurs: any biocides. Zinc limitations are only apnew source subject to this subpart plicable at facilities where zinc hydromust achieve the following new source sulfite is used as a bleaching agent. performance standards (NSPS), except Permittees not using zinc hydrosulfite that non-continuous dischargers shall as a bleaching agent must certify to not be subject to the maximum day the permit issuing authority that they and average of 30 consecutive days ef- are not using this bleaching compound:

SUBPART G [NSPS for mechanical pulp facilities where pulp and paper at groundwood mills are produced through the application of the

thermo-mechanical process)

SUBPART G INSPS for mechanical pulp facilities where the integrated production of pulp and coarse paper, molded pulp products, and

newsprint at groundwood mills occurs)

Pollutant or pollutant property

Kg/kkg (or pounds per 1,000 lb) of

product Continuous dischargers

Non-continAverage of