The provisions of this subpart are applicable to discharges resulting from the manufacture of ammonium nitrate. Discharges attributable to shipping losses, precipitation runoff from outside the battery limits of the ammonium nitrate manufacturing operations, cooling tower blowdown, and discharges from plants which totally condense their neutralizer overheads are excluded.
(Sec. 306(b), Federal Water Pollution Control Act, as amended (33 U.S.C. 1316(c)))
[43 FR 17827, Apr. 26, 1978]
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 100 percent ammonium nitrate content of the material manufactured.
(Sec. 306(b), Federal Water Pollution Control Act, as amended (33 U.S.C. 1316(c)))
[43 FR 17828, Apr. 26, 1978]
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 characteristics
| Effluent limitations
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days shall not exceed—
|
|---|
| Ammonia (as N) | 0.73 | 0.39
|
| Nitrate (as N) | .67 | .37
|
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 available technology economically achievable:
| Effluent characteristics
| Effluent limitations
|
|---|
| Maximum for any 1 day
| Average of daily values for 30 consecutive days shall not exceed—
|
|---|
| Ammonia (as N) | 0.08 | 0.04
|
| Nitrate (as N) | .12 | .07
|
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—
|
|---|
| Ammonia (as N) | 0.08 | 0.04
|
| Nitrate (as N) | .12 | .07
|
The pretreatment standards under section 307(c) of the Act for a source within the ammonium nitrate 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 418.45; Provided, That, if the publicly owned treatment works which receives the pollutants in 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.
Effective Date Note:Section 418.46 was suspended until further notice at 40 FR 26275, June 23, 1975, effective July 20, 1975.