# 432.12 Effluent limitations 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 representing the application of BPT:
(a) Facilities that slaughter no more than 50 million pounds per year (in units of LWK) must achieve the following limitations:
(1) In the case of process wastewater associated with the slaughtering of animals on-site or the processing of the carcasses of animals slaughtered on-site:
Effluent Limitations
[BPT]
| Regulatedparameter | Maximum daily | Maximum monthly avg. |
| --- | --- | --- |
| BOD | 0.24 | 0.12 |
| Fecal Coliform | () | () |
| O&G | 0.12 | 0.06 |
| TSS | 0.40 | 0.20 |
| Pounds per 1000 lbs (or g/kg) LWK. | | |
| Maximum of 400 most probable number (MPN) or colony forming units (CFU) per 100 mL at any time. | | |
| No maximum monthly average limitation. | | |
| May be measured as hexane extractable material (HEM). | | |
(2) In addition to the limitations specified in paragraph (a)(1) of this section, in the case of process wastewater associated with the processing (defleshing, washing and curing) of hides derived from animals slaughtered at locations off-site, the following limitations apply:
Effluent Limitations
[BPT]
| Regulatedparameter | Maximum daily | Maximum monthly avg. |
| --- | --- | --- |
| BOD | 0.04 | 0.02 |
| TSS | 0.08 | 0.04 |
| Pounds per 1000 lbs (or g/kg) ELWK. | | |
(3) In addition to the limitations specified in paragraph (a)(1) of this section, in the case of process wastewater associated with the processing of blood derived from animals slaughtered at locations off-site, the following limitations apply:
Effluent Limitations
[BPT]
| Regulatedparameter | Maximum daily | Maximum monthly avg. |
| --- | --- | --- |
| BOD | 0.04 | 0.02 |
| TSS | 0.08 | 0.04 |
| Pounds per 1000 lbs (or g/kg) ELWK. | | |
(4) In addition to the limitations specified in paragraph (a)(1) of this section, in the case of process wastewater associated with wet or low-temperature rendering of material derived from animals slaughtered at locations off-site and dead animals, the following limitations apply:
Effluent Limitations
[BPT]
| Regulatedparameter | Maximum daily | Maximum monthly avg. |
| --- | --- | --- |
| BOD | 0.06 | 0.03 |
| TSS | 0.12 | 0.06 |
| Pounds per 1000 lbs (or g/kg) ELWK. | | |
(5) In addition to the limitations specified in paragraph (a)(1) of this section, in the case of process wastewater associated with dry rendering of material derived from animals slaughtered at locations off-site and dead animals, the following limitations apply:
Effluent Limitations
[BPT]
| Regulatedparameter | Maximum daily | Maximum monthly avg. |
| --- | --- | --- |
| BOD | 0.02 | 0.01 |
| TSS | 0.04 | 0.02 |
| Pounds per 1000 lbs (or g/kg) ELWK. | | |
(b) Facilities that slaughter more than 50 million pounds per year (in units of LWK) must achieve the following limitations:
(1) All facilities must achieve the following effluent limitation for ammonia (as N):
Effluent Limitations
[BPT]
| Regulatedparameter | Maximum daily | Maximum monthly avg. |
| --- | --- | --- |
| Ammonia (as N) | 8.0 | 4.0 |
| mg/L (ppm). | | |
(2) In the case of process wastewater associated with the slaughtering of animals on-site, the limitations for BOD<sub>5</sub>, fecal coliform, O&G, and TSS specified in paragraph (a)(1) of this section apply.
(3) In addition to the limitations specified in paragraphs (b)(1) and (2) of this section, in the case of process wastewater associated with the processing (defleshing, washing and curing) of hides derived from animals slaughtered at locations off-site, the limitations for BOD<sub>5</sub> and TSS specified in paragraph (a)(2) of this section also apply.
(4) In addition to the limitations specified in paragraphs (b)(1) and (2) of this section, in the case of process wastewater associated with the processing of blood derived from animals slaughtered at locations off-site, the limitations for BOD<sub>5</sub> and TSS specified in paragraph (a)(3) of this section apply.
(5) In addition to the limitations specified in paragraphs (b)(1) and (2) of this section, in the case of process wastewater associated with wet or low-temperature rendering of material derived from animals slaughtered at locations off-site and dead animals, the limitations for BOD<sub>5</sub> and TSS specified in paragraph (a)(4) of this section apply.
(6) In addition to the limitations specified in paragraphs (b)(1) and (2) of this section, in the case of process wastewater associated with dry rendering of material derived from animals slaughtered at locations off-site and dead animals, the limitations for BOD<sub>5</sub> and TSS specified in paragraph (a)(5) of this section apply.