CFR / Title 40 / Part 421 / Sec. 421.33 Effluent limitations guidelines representing the degreeavailable technology

economically achievable.

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart shall achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:

(a) Subpart C--Scrap Drying Wet Air Pollution Control.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pound's per

million pounds) of

aluminum scrap dried

--------------Lead.......................................... .000 .000Zinc.......................................... .000 .000Aluminum...................................... .000 .000Ammonia (as N)................................ .000 .000------------------------------------------------------------------------

(b) Subpart C--Scrap Screening and Milling.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pound's per

million pounds) of

aluminum scrap screened

and milled

(c) Subpart C--Dross Washing.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pound's per

million pounds) of dross

washed

--------------Lead.......................................... 3.043 1.413Zinc.......................................... 11.090 4.565Aluminum...................................... 66.410 29.450Ammonia (as N)................................ 1,449.000 636.900------------------------------------------------------------------------

(d) Subpart C--Demagging Wet Air Pollution Control.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (lb/million lbs)

of aluminum demagged

--------------Lead.......................................... 0.216 0.100Zinc.......................................... 0.786 0.324Aluminum...................................... 4.711 2.090Ammonia (as N)................................ 102.800 45.180------------------------------------------------------------------------

(e) Subpart C--Delacquering Wet Air Pollution Control.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pound's per

million pounds) of

aluminum delacquered

--------------Lead.......................................... 0.093 0.043Zinc.......................................... 0.340 0.140Aluminum...................................... 2.035 0.903Ammonia (as N)................................ 44.389 19.514Total phenolics (4-AAP method) \1\............ 0.004 ...........------------------------------------------------------------------------\1\ At the source.

(f) Subpart C--Direct Chill Casting Contact Cooling.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum cast

--------------Lead.......................................... .372 .173Zinc.......................................... 1.356 .558Aluminum...................................... 8.120 3.602Ammonia (as N)................................ 177.200 77.880------------------------------------------------------------------------

(g) Subpart C--Ingot Conveyor Casting Contact Cooling (When Chlorine Demagging Wet Air Pollution Control is Not Practiced On-Site).

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (lb/million lbs)

of aluminum cast

--------------Lead.......................................... 0.019 0.009Zinc.......................................... 0.068 0.028Aluminum...................................... 0.409 0.182Ammonia (as N)................................ 8.931 3.926------------------------------------------------------------------------

(h) Subpart C--Ingot Conveyor Casting Contact Cooling (When Chloride Demagging Wet Air Pollution Control is Practiced On Site).

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum cast

(i) Subpart C--Stationary Casting Contact Cooling.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum cast

(j) Subpart C--Shot Casting Contact Cooling.

BAT Effluent Limitations------------------------------------------------------------------------

Maximum for

Pollutant or pollutant property Maximum for monthly

any 1 day average------------------------------------------------------------------------

mg/kg (pounds per

million pounds) of

aluminum cast