Section 279.42. Effluent limitations guidelines representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).

 

(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): - See PDF for table

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.

(a) Size factor. - See PDF for table

(b) Process factor. - See PDF for table

(c) Example of the application of the above factors. Example — Lube refinery 125,000 bbl per steam day throughout. - See PDF for table - See PDF for table

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. BOD 5 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.

(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 15 mg/l oil and grease and 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 15 mg/l oil and grease or 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: - See PDF for table

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 BOD 5 . 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 BOD 5 .

2 Within the range 6.0 to 9.0.

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