Except as provided in 40 CFR 403.7 and 493.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources (PSES):
Subpart BC--Sodium Fluoride------------------------------------------------------------------------
PSES effluent
limitations
-------------------------
Average of
Pollution or pollutant property daily
Maximum for values for
any 1 day 30
consecutive
days------------------------------------------------------------------------
Milligrams per liter (mg/
l)
--------------Fluoride...................................... 50 25------------------------------------------------------------------------ Sec. 415.555 [Reserved]