Wisconsin Administrative Code
Department of Natural Resources
NR 200-299 - Environmental Protection - Wisconsin Pollutant Discharge Elimination System
Chapter NR 279 - Petroleum refining
Section NR 279.42 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT)
Current through August 26, 2024
(1) Except as provided in 40 CFR 125.30- 125.32 any existing point source subject to this subcategory 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):
|
BPT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Metric units (kilograms per 1,000 m3 of feedstock) |
||
|
BOD5 |
50.6 |
25.8 |
|
TSS |
35.6 |
22.7 |
|
COD1 |
360.0 |
187.0 |
|
Oil and grease |
16.2 |
8.5 |
|
Phenolic compounds |
0.38 |
0.184 |
|
Ammonia as N |
23.4 |
10.6 |
|
Sulfide |
0.33 |
0.150 |
|
Total chromium |
0.77 |
0.45 |
|
Hexavalent chromium |
0.068 |
0.03 |
|
pH |
(2) |
(2) |
|
English units (pounds per 1,000 bbl of feedstock) |
||
|
BOD5 |
17.9 |
9.1 |
|
TSS |
12.5 |
8.0 |
|
COD1 |
127.0 |
66.0 |
|
Oil and grease |
5.7 |
3.0 |
|
Phenolic compounds |
0.133 |
0.065 |
|
Ammonia as N |
8.3 |
3.8 |
|
Sulfide |
0.118 |
0.053 |
|
Total chromium |
0.273 |
0.16 |
|
Hexavalent chromium |
0.024 |
0.011 |
|
pH |
(2) |
(2) |
1 See footnote following table in s. NR 279.13(4).
2 Within the range of 6.0 to 9.0.
(2) The limits set forth in sub. (1) shall be multiplied by the following factors to calculate the maximum for any one day and maximum average of daily values for 30 consecutive days.
|
1000 bbl. of feedstock per stream |
Size factor |
|
Less than 49.9 |
0.71 |
|
50.0 to 74.9 |
0.74 |
|
75.0 to 99.9 |
0.81 |
|
100.0 to 124.9 |
0.88 |
|
125.0 to 149.9 |
0.97 |
|
150.0 to 174.9 |
1.05 |
|
175.0 to 199.9 |
1.14 |
|
200.0 or greater |
1.19 |
|
Process configuration |
Process factor |
|
Less than 6.49 |
0.81 |
|
6.5 to 7.49 |
0.88 |
|
7.5 to 7.99 |
1.0 |
|
8.0 to 8.49 |
1.09 |
|
8.5 to 8.99 |
1.19 |
|
9.0 to 9.49 |
1.29 |
|
9.5 to 9.99 |
1.41 |
|
10.0 to 10.49 |
1.53 |
|
10.5 to 10.99 |
1.67 |
|
11.0 to 11.49 |
1.82 |
|
11.5 to 11.99 |
1.98 |
|
12.0 to 12.49 |
2.15 |
|
12.5 to 12.99 |
2.34 |
|
13.0 or greater |
2.44 |
Calculations of the Process Configuration
|
Process category |
Process included |
Weighting factor |
|
Crude |
Atm crude distillation |
1 |
|
Vacuum, crude distillation |
||
|
Desalting |
||
|
Cracking and coking |
Fluid cat. cracking |
6 |
|
Visbreaking |
||
|
Thermal cracking |
||
|
Moving bed cat. cracking |
||
|
Hydrocracking |
||
|
Fluid coking |
||
|
Delayed coking |
||
|
Lube |
Further defined in the development document |
13 |
|
Asphalt |
Asphalt production |
12 |
|
Asphalt oxidation |
||
|
Asphalt emulsifying |
|
Process |
Capacity (1,000 bbl per stream day) |
Capacity relative to throughput |
Weighting factor |
Processing configuration |
|
Crude: |
||||
|
Atm |
125.0 |
1.0 |
||
|
Vacuum |
60.0 |
0.48 |
||
|
Desalting |
125.0 |
1.0 |
||
|
Total |
2.48 |
x1 |
=2.48 |
|
|
Cracking: |
||||
|
FCC |
41.0 |
0.328 |
||
|
Hydro- |
||||
|
cracking |
20.0 |
0.16 |
||
|
Total |
0.488 |
x6 |
=2.93 |
|
|
Lubes |
5.3 |
0.042 |
||
|
4.0 |
0.032 |
|||
|
4.9 |
0.039 |
|||
|
Total |
0.113 |
x13 |
=1.47 |
|
|
Asphalt |
4.0 |
0.032 |
x12 |
=0.88 |
|
Refinery |
||||
|
process |
||||
|
configuration |
=7.26 |
Notes: See table s. NR 279.42(2) (b) for process factor. Process factor = 0.88.
See Table s. NR 279.42(2) (a) for size factor for 125,000 bbl per stream day lube refinery. Size factor = 0.97.
To calculate the limits for each parameter, multiply the limit s. NR 279.42(1) by both the process factor and size factor. BOD5 limit (maximum for any 1 day) = 17.9 x 0.88 x 0.97 = 15.3 lb. per 1,000 bbl of feedstock.
(3) The provisions of s. NR 279.12(3) apply to discharges of process wastewater pollutants attributable to ballast water by a point source subject to the provisions of this subcategory.
(4) The quantity and quality of pollutants or pollutant properties controlled by this subsection, attributable to once-through cooling water, are excluded from the discharge allowed by sub. (2). Once-through cooling water may be discharged with a total organic carbon concentration not to exceed 5 mg/l.
(5) The following effluent limitations constitute the quantity and quality of pollutants or pollutant properties controlled by this subsection and attributable to contaminated runoff, which may be discharged after the application of the best practicable control technology currently available by a point source subject to this subcategory.
|
BPT effluent limitations |
||
|
Pollutant or pollutant property |
Maximum for any 1 day |
Average of daily values for 30 consecutive days |
|
Metric units (kilograms per 1,000 cubic meters of flow) |
||
|
BOD5 |
48.0 |
26.0 |
|
TSS |
33.0 |
21.0 |
|
COD1 |
360.0 |
180.0 |
|
Oil and grease |
15.0 |
8.0 |
|
Phenolic compounds (4AAP) |
0.35 |
0.17 |
|
Total chromium |
0.73 |
0.43 |
|
Hexavalent chromium |
0.062 |
0.028 |
|
pH |
(2) |
(2) |
|
English units (pounds per 1,000 gallons of flow) |
||
|
BOD5 |
0.4 |
0.22 |
|
TSS |
0.28 |
0.18 |
|
COD1 |
3.0 |
1.5 |
|
Oil and grease |
0.13 |
0.067 |
|
Phenolic compounds (4AAP) |
0.0029 |
0.0014 |
|
Total chromium |
0.006 |
0.0035 |
|
Hexavalent chromium |
0.00052 |
0.00023 |
|
pH |
(2) |
(2) |
1 In any case in which the applicant can demonstrate that the chloride ion concentration in the effluent exceeds 1,000 mg/l (1,000 ppm), the department may substitute TOC as a parameter in lieu of COD. A TOC effluent limitation shall be based on effluent data from the particular refinery which correlates TOC to BOD5. If in the judgment of the department, adequate correlation data are not available, the effluent limitations for TOC shall be established at a ratio of 2.2 to 1 to the applicable effluent limitations for BOD5.
2 Within the range 6.0 to 9.0.
