§ 471.71 — Effluent Limitations Representing The Degree Of Effluent Reduction Attainable By The Application Of The Best Practicable Control Technology Currently Available (bpt)

Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations for the process operations representing the degree of effluent reduction attainable by the application of the best praticable control technology currently available (BPT):

(a) Extrusion spent lubricants—subpart G—BPT. There shall be no discharge process wastewater pollutants.

(b) Extrusion tool contact cooling water.

Subpart G—BPT

(c) Heat treatment contact cooling water.

Subpart G—BPT

(d) Forging spent lubricants—subpart G—BPT. There shall be no discharge of process wastewater pollutants.

(e) Surface treatment spent baths.

Subpart G—BPT

(f) Surface treatment rinse.

Subpart G—BPT

(g) Wet air pollution control scrubber blowdown.

Subpart G—BPT

(h) Sawing or grinding spent emulsions.

Subpart G—BPT

(i) Sawing or grinding contact cooling water.

Subpart G—BPT

(j) Sawing or grinding rinse.

Subpart G—BPT

(k) Area cleaning rinse.

Subpart G—BPT

(l) Drum washwater.

Subpart G—BPT

(m) Laundry washwater.

Subpart G—BPT

(n) Degreasing spent solvents—subpart G—BPT. There shall be no discharge of process wastewater pollutants.