40 CFR § 471.73 - New source performance standards (NSPS).
---
identifier: "/us/cfr/t40/s471.73"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 471.73 - New source performance standards (NSPS)."
title_number: 40
title_name: "Protection of Environment"
section_number: "471.73"
section_name: "New source performance standards (NSPS)."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "471"
part_name: "NONFERROUS METALS FORMING AND METAL POWDERS POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Secs. 301, 304(b), (c), (e), and (g), 306(b) and (c), 307, 308, and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972 as amended by the Clean Water Act of 1977) (the “Act”); 33 U.S.C. 1311, 1314(b), (c), (e), and (g), 1316(b) and (c), and 1361; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."
regulatory_source: "50 FR 34270, Aug. 23, 1985, unless otherwise noted."
cfr_part: "471"
---
# 471.73 New source performance standards (NSPS).
Any new source subject to this subpart must achieve the following new source performance standards (NSPS). The mass of pollutants in the uranium forming process wastewater shall not exceed the following values:
(a) *Extrusion spent lubricants—subpart G—NSPS.* There shall be no discharge of process wastewater pollutants.
(b) *Extrusion tool contact cooling water.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium extruded | |
| Cadmium | 0.007 | 0.003 |
| Chromium | 0.013 | 0.005 |
| Copper | 0.044 | 0.021 |
| Lead | 0.010 | 0.005 |
| Nickel | 0.019 | 0.013 |
| Fluoride | 2.05 | 0.908 |
| Molybdenum | 0.173 | 0.077 |
| Oil and grease | 0.344 | 0.344 |
| TSS | 0.516 | 0.413 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(c) *Heat treatment contact cooling water.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of extruded or forged uranium heat treated | |
| Cadmium | 0.006 | 0.003 |
| Chromium | 0.012 | 0.005 |
| Copper | 0.040 | 0.019 |
| Lead | 0.009 | 0.004 |
| Nickel | 0.017 | 0.012 |
| Fluoride | 1.86 | 0.827 |
| Molybdenum | 0.158 | 0.070 |
| Oil and grease | 0.313 | 0.313 |
| TSS | 0.470 | 0.376 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(d) *Forging spent lubricants—subpart G—NSPS.* There shall be no discharge of process wastewater pollutants.
(e) *Surface treatment spent baths.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium surface treated | |
| Cadmium | 0.006 | 0.002 |
| Chromium | 0.010 | 0.004 |
| Copper | 0.035 | 0.017 |
| Lead | 0.008 | 0.004 |
| Nickel | 0.015 | 0.010 |
| Fluoride | 1.62 | 0.718 |
| Molybdenum | 0.137 | 0.061 |
| Oil and grease | 0.272 | 0.272 |
| TSS | 0.408 | 0.327 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(f) *Surface treatment rinse.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium surface treated | |
| Cadmium | 0.068 | 0.027 |
| Chromium | 0.125 | 0.051 |
| Copper | 0.432 | 0.206 |
| Lead | 0.095 | 0.044 |
| Nickel | 0.186 | 0.125 |
| Fluoride | 20.1 | 8.90 |
| Molybdenum | 1.70 | 0.752 |
| Oil and grease | 3.37 | 3.37 |
| TSS | 5.06 | 4.05 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(g) *Wet air pollution control scrubber blowdown.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium surface treated | |
| Cadmium | 0.0007 | 0.0003 |
| Chromium | 0.001 | 0.0005 |
| Copper | 0.005 | 0.002 |
| Lead | 0.001 | 0.0005 |
| Nickel | 0.002 | 0.001 |
| Fluoride | 0.208 | 0.092 |
| Molybdenum | 0.018 | 0.008 |
| Oil and grease | 0.035 | 0.035 |
| TSS | 0.053 | 0.042 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(h) *Sawing or grinding spent emulsions.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium sawed or ground with emulsions | |
| Cadmium | 0.001 | 0.0005 |
| Chromium | 0.002 | 0.0009 |
| Copper | 0.007 | 0.004 |
| Lead | 0.002 | 0.0008 |
| Nickel | 0.003 | 0.002 |
| Fluoride | 0.338 | 0.150 |
| Molybdenum | 0.029 | 0.013 |
| Oil and grease | 0.057 | 0.057 |
| TSS | 0.085 | 0.068 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(i) *Sawing or grinding contact cooling water.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium sawed or ground with contact cooling water | |
| Cadmium | 0.033 | 0.013 |
| Chromium | 0.061 | 0.025 |
| Copper | 0.211 | 0.101 |
| Lead | 0.046 | 0.022 |
| Nickel | 0.091 | 0.061 |
| Fluoride | 9.82 | 4.36 |
| Molybdenum | 0.830 | 0.368 |
| Oil and grease | 1.65 | 1.65 |
| TSS | 2.48 | 1.98 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(j) *Sawing or grinding rinse.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of sawed or ground uranium rinsed | |
| Cadmium | 0.001 | 0.0004 |
| Chromium | 0.002 | 0.0007 |
| Copper | 0.006 | 0.003 |
| Lead | 0.002 | 0.0006 |
| Nickel | 0.003 | 0.002 |
| Fluoride | 0.277 | 0.123 |
| Molybdenum | 0.024 | 0.011 |
| Oil and grease | 0.047 | 0.047 |
| TSS | 0.070 | 0.056 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(k) *Area cleaning rinse.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium formed | |
| Cadmium | 0.009 | 0.004 |
| Chromium | 0.016 | 0.007 |
| Copper | 0.055 | 0.026 |
| Lead | 0.012 | 0.006 |
| Nickel | 0.024 | 0.016 |
| Fluoride | 2.56 | 1.14 |
| Molybdenum | 0.216 | 0.096 |
| Oil and grease | 0.429 | 0.429 |
| TSS | 0.644 | 0.515 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(l) *Drum washwater.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/off-kg (pounds per million off-pounds) of uranium formed | |
| Cadmium | 0.009 | 0.004 |
| Chromium | 0.017 | 0.007 |
| Copper | 0.057 | 0.027 |
| Lead | 0.013 | 0.006 |
| Nickel | 0.025 | 0.017 |
| Fluoride | 2.64 | 1.17 |
| Molybdenum | 0.223 | 0.099 |
| Oil and grease | 0.443 | 0.443 |
| TSS | 0.665 | 0.532 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(m) *Laundry washwater.*
Subpart G—NSPS
| Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
| --- | --- | --- |
| | mg/employee—day | |
| Cadmium | 5.24 | 2.10 |
| Chromium | 9.70 | 3.93 |
| Copper | 33.6 | 16.0 |
| Lead | 7.34 | 3.41 |
| Nickel | 14.4 | 9.70 |
| Fluoride | 1,560 | 692 |
| Molybdenum | 132 | 58.4 |
| Oil and grease | 262 | 262 |
| TSS | 393 | 315 |
| pH | () | () |
| Within the range of 7.5 to 10.0 at all times. | | |
(n) *Degreasing spent solvents—subpart G—NSPS.* There shall be no discharge of process waster pollutants.
[50 FR 34270, Aug. 23, 1985; 51 FR 2888, Jan. 22, 1986]