CFR / Title 40 / Part 430 / Sec. 430.34 Effluent limitations representing the degree of effluent economically achievable (BAT).

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart where chlorophenolic-containing biocides are used must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT). Non-continuous dischargers shall not be subject to the maximum day mass limitations in kg/kkg (lb/1000 lb), but shall be subject to concentration limitations. Concentration limitations are only applicable to non-continuous dischargers. Permittees not using chlorophenolic-containing biocides must certify to the permit-issuing authority that they are not using these biocides:

Subpart C

[BAT effluent limitations for unbleached kraft facilities]------------------------------------------------------------------------

Maximum for any 1 day

-----------------------------------------

Pollutant or pollutant Kg/kkg (or

property pounds per

1,000 lb) Milligrams/liter

of product------------------------------------------------------------------------Pentachlorophenol............. 0.00058 (0.011)(12.6)/yTrichlorophenol............... 0.00053 (0.010)(12.6)/yy=wastewater discharged in

kgal per ton of product.------------------------------------------------------------------------

Subpart C[BAT effluent limitations for unbleached kraft facilities where pulp and

paper are produced using the unbleached kraft-neutral sulfite semi-chemical (cross recovery) process and/or a combined unbleached kraft andsemi-chemical process, wherein the spent semi-chemical cooking liquor is