Statutes, codes, and regulations
Wisconsin Administrative Code
Agency - Department of Natural ResourcesEnvironmental Protection - Wisconsin Pollutant Discharge Elimination System
Chapter NR 279 - Petroleum refining
Section NR 279.23 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)

Wis. Admin. Code Department of Natural Resources NR 279.23

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Current through October 28, 2024
Section NR 279.23 - Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT)
(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 available technology economically achievable:

BAT 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

COD1

210.0

109.0

Ammonia as N

18.8

8.5

Sulfide

0.18

0.082

English units (pounds per 1,000 bbl of feedstock)

COD1

74.0

38.4

Ammonia as N

6.6

3.0

Sulfide

0.065

0.029

1 See footnote following table in s. NR 279.13(4).

(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:
(a) Size factor.

1000 bbl. of feedstock per stream day

Size factor

Less than 24.9

0.91

25.0 to 49.9

0.95

50.0 to 74.9

1.04

75.0 to 99.9

1.13

100.0 to 124.9

1.23

125.0 to 149.9

1.35

150.0 or greater

1.41

(b) Process factor.

Process configuration

Process factor

Less than 2.49

0.58

2.5 to 3.49

0.63

3.5 to 4.49

0.74

4.5 to 5.49

0.88

5.5 to 5.99

1.0

6.0 to 6.49

1.09

6.5 to 6.99

1.19

7.0 to 7.49

1.29

7.5 to 7.99

1.41

8.0 to 8.49

1.53

8.5 to 8.99

1.67

9.0 to 9.49

1.82

9.5 or greater

1.89

Note: See the comprehensive example in s. NR 279.42(2) (c).

(3)
(a) In addition to the provisions contained above pertaining to COD, ammonia and sulfide, 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 available technology economically achievable (BAT). For each of the regulated pollutant parameters listed below, the effluent limitation for a given refinery is the sum of the products of each effluent limitation factor times the applicable process feedstock rate, calculated as provided in 40 CFR 122.45(b).

Note: Applicable production processes are presented in Appendix A by process type, the process identification numbers presented in this Appendix A are for the convenience of the reader. They may be cross referenced in the Development Document for Effluent Limitations Guidelines, New Source Performances Standards, and Pretreatment Standards for the Petroleum Refining Point Source Category (EPA 440/1-82/014. Table 111-7, pp. 49-54.

40 CFR 122.45(b) reads as follows: The calculation of any permit limitations, standards, or prohibitions which are based on production (or other measure of operation) shall be based not upon the designed production capacity but rather upon a reasonable measure of actual production of the facility, such as the production during the high month of the previous year, or the monthly average for the highest of the previous 5 years. For new sources or new dischargers, actual production shall be estimated using projected production. The time period of the measure of production shall correspond to the time period of the calculated permit limitations; for example, monthly production shall be used to calculate average monthly discharge limitations.

BAT Effluent Limitations Factor

Pollutant or pollutant property and process type

Maximum for any 1 day

Average of daily values for 30 consecutive days

Metric units (kilograms per 1,000 m3 of feedstock)

Phenolic compounds (4AAP):

Crude

0.037

0.009

Cracking and coking

0.419

0.102

Asphalt

0.226

0.055

Lube

1.055

0.257

Reforming and alkylation

0.377

0.092

Total chromium:

Crude

0.03

0.011

Cracking and coking

0.34

0.118

Asphalt

0.183

0.064

Lube

0.855

0.297

Reforming and alkylation

0.305

0.106

Hexavalent chromium:

Crude

0.0019

0.0009

Cracking and coking

0.0218

0.0098

Asphalt

0.0117

0.0053

Lube

1.0549

0.0248

Reforming and alkylation

0.0196

0.0088

English units (pounds per 1,000 bbl of feedstock)

Phenolic compounds (4AAP):

Crude

0.013

0.003

Cracking and coking

0.147

0.036

Asphalt

0.079

0.019

Lube

0.369

0.09

Reforming and alkylation

0.132

0.032

Total chromium:

Crude

0.011

0.004

Cracking and coking

0.119

0.041

Asphalt

0.064

0.022

Lube

0.299

0.104

Reforming and alkylation

0.107

0.037

Hexavalent chromium:

Crude

0.0007

0.0003

Cracking and coking

0.0076

0.0034

Asphalt

0.0041

0.0019

Lube

0.0192

0.0087

Reforming and alkylation

0.0089

0.0031

Note: See the comprehensive example in s. NR 279.43(3) (b).

(4) The provisions of s. NR 279.13(4) apply to discharges of process wastewater pollutants attributable to ballast water by a point source subject to the provisions of this subcategory.
(5) 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.
(6) 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 available technology economically achievable by a point source subject to this subcategory.
(a) If wastewater consists solely of contaminated runoff and is not commingled or treated with process wastewater, it may be discharged if it does not exceed 110 mg/l total organic carbon (TOC) based upon an analysis of any single grab or composite sample.
(b) If contaminated runoff is commingled or treated with process wastewater, or if wastewater consisting solely of contaminated runoff which exceeds 110 mg/l TOC is not commingled or treated with any other type of wastewater, the quantity of pollutants discharged may not exceed the quantity determined by multiplying the flow of contaminated runoff as determined by the department times the concentrations listed in the following table:

BAT 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)

Phenolic compounds (4AAP)

0.35

0.17

Total chromium

0.6

0.21

Hexavalent chromium

0.062

0.028

COD1

360.0

180.0

English units (pounds per 1,000 gallons of flow)

Phenolic compounds (4AAP)

.0029

.0014

Total chromium

.005

.0018

Hexavalent chromium

.00052

.00023

COD1

3.0

1.5

1 In any case in which the applicant can demonstrate that the chloride ion concentration in the effluent exceeds 1000 mg/l (1000 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.

Wis. Admin. Code Department of Natural Resources NR 279.23

Cr. Register, October, 1986, No. 370, eff. 11-1-86.