The provisions of this subpart are applicable to discharges resulting from the manufacture of ammonia. Discharges attributable to shipping losses and cooling tower blowdown are excluded.
[44 FR 64081, Nov. 6, 1979]
For the purposes of this subpart:
(a) Except as provided below the general definitions, abbreviations and methods of analysis set forth in 40 CFR part 401 shall apply to this subpart.
(b) The term product shall mean the anhydrous ammonia content of the compound manufactured.
(c) The term shipping losses shall mean: Discharges resulting from loading tank cars or tank trucks; discharges resulting from cleaning tank cars or tank trucks; and discharges from air pollution control scrubbers designed to control emissions from loading or cleaning tank cars or tank trucks.
(d) The term process wastewater shall mean any water which, during manufacturing or processing, comes into direct contact with or results from the production or use of any raw material, intermediate product, finished product, by-product, or waste product. The term process wastewater does not include non-contact cooling water, as defined below.
(e) The term non-contact cooling water shall mean water which is used in a cooling system designed so as to maintain constant separation of the cooling medium from all contact with process chemicals but which may on the occasion of corrosion, cooling system leakage or similar cooling system failures contain small amounts of process chemicals: Provided, That all reasonable measures have been taken to prevent, reduce, eliminate and control to the maximum extent feasible such contamination: And provided further, That all reasonable measures have been taken that will mitigate the effects of such contamination once it has occurred.
[44 FR 64082, Nov. 6, 1979]
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):
| 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 product)
|
| Ammonia (as N) | 0.1875 | 0.0625
|
| pH | (
1) | (
1)
|
| English units (pounds per 1,000 lb of product)
|
| Ammonia (as N) | 0.1875 | 0.0625
|
| pH | (
1) | (
1)
|
Except as provided in §§ 125.30 through 125.32, the following limitations establish the quantity or quality of pollutants or pollutant properties, which may be discharged by a point source subject to the provisions of this subpart after application of the best available technology economically achievable.
| 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 product)
|
| Ammonia (as N) | 0.05 | 0.025
|
| English units (pounds per 1,000 lb of product)
|
| Ammonia (as N) | 0.05 | 0.025 |
The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart:
| 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 product)
|
| Ammonia (as N) | 0.11 | 0.055
|
| pH | (
1) | (
1)
|
| English units (pounds per 1,000 lb of product)
|
| Ammonia (as N) | 0.11 | 0.055
|
| pH | (
1) | (
1)
|
The pretreatment standards under section 307(c) of the Act for a source within the ammonia subcategory, which is a user of a publicly owned treatment works (and which would be a new source subject to section 306 of the Act, if it were to discharge pollutants to the navigable waters), shall be the standard set forth in 40 CFR part 128, except that, for the purpose of this section, 40 CFR 128.133 shall be amended to read as follows:
In addition to the prohibitions set forth in 40 CFR 128.131, the pretreatment standard for incompatible pollutants introduced into a publicly owned treatment works shall be the standard of performance for new sources specified in 40 CFR 418.25; provided that, if the publicly owned treatment works which receives the pollutants is committed, in its NPDES permit, to remove a specified percentage of any incompatible pollutant, the pretreatment standard applicable to users of such treatment works shall be correspondingly reduced in stringency for that pollutant.
The following limitations establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a point source subject to the provisions of this subpart after application of the best conventional pollutant control technology.
| Effluent characteristic
| Effluent limitations
|
|---|
| pH | Within the range 6.0 to 9.0. |