40 CFR 405.32: Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available.

Except as provided in §§ 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 practicable control technology currently available (BPT):

(a) For cultured products plants receiving more than 60,000 lb/day of milk equivalent (more than 6,200 lb/day of BOD5 input).

Effluent characteristic Effluent limitations

Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed—

Metric units (kilograms per 1,000 kg of BOD5 input)

BOD5 3.375 1.350

TSS 5.063 2.025

pH (1) (1)

English units (pounds per 100 lb of BOD5 input)

BOD5 0.338 0.135

TSS 0.506 .203

pH (1) (1)

1 Within the range 6.0 to 9.0.

(b) For cultured products plants receiving 60,000 lb/day or less of milk equivalent (less than 6,200 lb/day of BOD5 input).

Effluent characteristic Effluent limitations

Maximum for any 1 day Average of daily values for 30 consecutive days shall not exceed—

Metric units (kilograms per 1,000 kg of BOD5 input)

BOD5 4.50 2.250

TSS 6.750 .3.375

pH (1) (1)

English units (pounds per 100 lb of BOD5 input)

BOD5 0.450 0.225

TSS 0.675 .338

pH (1) (1)

1 Within the range 6.0 to 9.0.