(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart and reacting anhydrous ammonia with hydrogen chloride gas must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT): There shall be no discharge of process wastewater pollutants to navigable waters.
(b) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart and using the recovery process from Solvay process wastes must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
Subpart X--Ammonium Chloride Solvay Process------------------------------------------------------------------------
BPT limitations
-------------------------
Average of
daily
Pollutant or pollutant property Maximum for values for
any 1 day 30
consecutive
days------------------------------------------------------------------------
Kg/kkg (or pounds per
1,000 lb) of product
--------------Ammonia (as N)................................ 8.8 4.4pH............................................ (\1\) (\1\)------------------------------------------------------------------------\1\ Within the range 6.0 to 9.0. Subpart Y--Ammonium Hydroxide Production Subcategory [Reserved] Subpart Z--Barium Carbonate Production Subcategory [Reserved]
Subpart AA_Borax Production Subcategory