Learn About the Law
Get help with your legal needs
FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.
Code of Federal Regulations Title 40. Protection of Environment § 40.471.51 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Current as of October 02, 2022 | Updated by FindLaw Staff
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 for the process operations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT):
(a) Rolling spent neat oils and graphite based lubricants—Subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(b) Rolling spent emulsions.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals rolled with emulsions |
||
|
Copper |
0.815 |
0.429 |
|
Nickel |
0.824 |
0.545 |
|
Fluoride |
25.5 |
11.3 |
|
Molybdenum |
2.84 |
1.47 |
|
Oil and grease |
8.58 |
5.15 |
|
TSS |
17.6 |
8.37 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(c) Drawing spent lubricants—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(d) Extrusion spent lubricants—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(e) Extrusion press hydraulic fluid leakage.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals extruded |
||
|
Copper |
2.26 |
1.19 |
|
Nickel |
2.29 |
1.51 |
|
Fluoride |
70.8 |
31.4 |
|
Molybdenum |
7.87 |
4.07 |
|
Oil and grease |
23.8 |
14.3 |
|
TSS |
48.8 |
23.2 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(f) Forging spent lubricants—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(g) Forging contact cooling water.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of forged refractory metals cooled with water |
||
|
Copper |
0.614 |
0.323 |
|
Nickel |
0.620 |
0.410 |
|
Fluoride |
19.2 |
8.53 |
|
Molybdenum |
2.14 |
1.11 |
|
Oil and grease |
6.46 |
3.88 |
|
TSS |
13.3 |
6.30 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(h) Equipment cleaning wastewater.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals formed |
||
|
Copper |
2.59 |
1.36 |
|
Nickel |
2.61 |
1.73 |
|
Fluoride |
80.9 |
35.9 |
|
Molybdenum |
8.99 |
4.65 |
|
Oil and grease |
27.2 |
16.3 |
|
TSS |
55.8 |
26.5 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(i) Metal powder production wastewater.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals powder produced |
||
|
Copper |
0.534 |
0.281 |
|
Nickel |
0.540 |
0.357 |
|
Fluoride |
16.70 |
7.42 |
|
Molybdenum |
1.86 |
0.961 |
|
Oil and grease |
5.62 |
3.37 |
|
TSS |
11.5 |
5.48 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(j) Metal powder production floor wash wastewater—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(k) Metal powder pressing spent lubricants—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(l) Surface treatment spent baths.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals surface treated |
||
|
Copper |
0.739 |
0.389 |
|
Nickel |
0.747 |
0.494 |
|
Fluoride |
23.2 |
10.3 |
|
Molybdenum |
2.57 |
1.33 |
|
Oil and grease |
7.78 |
4.68 |
|
TSS |
16.0 |
7.59 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(m) Surface treatment rinse.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals surface treated |
||
|
Copper |
230 |
121 |
|
Nickel |
232 |
154 |
|
Fluoride |
7,200 |
3,200 |
|
Molybdenum |
800 |
414 |
|
Oil and grease |
2,420 |
1,450 |
|
TSS |
4,960 |
2,360 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(n) Alkaline cleaning spent baths.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned |
||
|
Copper |
0.635 |
0.334 |
|
Nickel |
0.641 |
0.424 |
|
Fluoride |
19.9 |
8.82 |
|
Molybdenum |
2.21 |
1.14 |
|
Oil and grease |
6.68 |
4.01 |
|
TSS |
13.7 |
6.51 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(o) Alkaline cleaning rinse.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals alkaline cleaned |
||
|
Copper |
1,550 |
816 |
|
Nickel |
1,570 |
1,040 |
|
Fluoride |
48,600 |
21,600 |
|
Molybdenum |
5,400 |
2,790 |
|
Oil and grease |
16,300 |
9,790 |
|
TSS |
33,500 |
15,900 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(p) Molten salt rinse.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals treated with molten salt |
||
|
Copper |
12.1 |
6.33 |
|
Nickel |
12.2 |
8.04 |
|
Fluoride |
377 |
167 |
|
Molybdenum |
41.9 |
21.7 |
|
Oil and grease |
127 |
76.0 |
|
TSS |
260 |
124 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(q) Tumbling or burnishing wastewater.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals tumbled or burnished |
||
|
Copper |
23.8 |
12.5 |
|
Nickel |
24.0 |
15.9 |
|
Fluoride |
744 |
330 |
|
Molybdenum |
82.7 |
42.8 |
|
Oil and grease |
250 |
150 |
|
TSS |
513 |
244 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(r) Sawing or grinding spent neat oils—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
(s) Sawing or grinding spent emulsions.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with emulsions |
||
|
Copper |
0.565 |
0.297 |
|
Nickel |
0.570 |
0.377 |
|
Fluoride |
17.7 |
7.84 |
|
Molybdenum |
1.97 |
1.02 |
|
Oil and grease |
5.94 |
3.57 |
|
TSS |
12.2 |
5.79 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(t) Sawing or grinding contact cooling water.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground with contact cooling water |
||
|
Copper |
46.2 |
24.3 |
|
Nickel |
46.7 |
30.9 |
|
Fluoride |
1450 |
642 |
|
Molybdenum |
161 |
83.1 |
|
Oil and grease |
486 |
292 |
|
TSS |
997 |
474 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(u) Sawing or grinding rinse.
|
SUBPART E—BPT |
||
|---|---|---|
|
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 refractory metals rinsed |
||
|
Copper |
0.257 |
0.135 |
|
Nickel |
0.259 |
0.172 |
|
Fluoride |
8.03 |
3.57 |
|
Molybdenum |
0.893 |
0.462 |
|
Oil and grease |
2.70 |
1.62 |
|
TSS |
5.54 |
2.63 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(v) Wet air pollution control scrubber blowdown.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals sawed or ground, surface coated or surface treated |
||
|
Copper |
1.50 |
0.787 |
|
Nickel |
1.51 |
1.00 |
|
Fluoride |
46.8 |
20.8 |
|
Molybdenum |
5.20 |
2.69 |
|
Oil and grease |
15.8 |
9.45 |
|
TSS |
32.3 |
15.4 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(w) Miscellaneous wastewater sources.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals formed |
||
|
Copper |
0.656 |
0.345 |
|
Nickel |
0.663 |
0.438 |
|
Fluoride |
20.6 |
9.11 |
|
Molybdenum |
2.28 |
1.18 |
|
Oil and grease |
6.9 |
4.14 |
|
TSS |
14.2 |
6.73 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(x) Dye penetrant testing wastewater.
|
SUBPART E—BPT |
||
|---|---|---|
|
Pollutant or pollutant property |
Maximum for any 1 day |
Maximum for monthly average |
|
mg/off-kg (pounds per million off-pounds) of refractory metals tested |
||
|
Copper |
0.150 |
0.078 |
|
Nickel |
0.150 |
0.099 |
|
Fluoride |
4.60 |
2.00 |
|
Molybdenum |
0.513 |
0.266 |
|
Oil and grease |
1.60 |
0.930 |
|
TSS |
3.20 |
1.50 |
|
pH |
(1) |
(1) |
1 Within the range of 7.5 to 10.0 at all times.
(y) Degreasing spent solvents—subpart E—BPT. There shall be no discharge of process wastewater pollutants.
Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.471.51 Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT) - last updated October 02, 2022 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-471-51/
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature or via Westlaw before relying on it for your legal needs.
Was this helpful?
Search all Codes
Welcome to FindLaw's Cases & Codes
A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw's Learn About the Law.
For Legal Professionals
Need to find an attorney?
Search our directory by legal issue
Enter information in one or both fields (Required)