Wis. Admin. Code Department of Natural Resources NR 274.212

Current through November 25, 2024
Section NR 274.212 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available

Except as provided in 40 C.F.R. ss. 125.30 to 125.32, any existing point source subject to this subchapter shall achieve the following effluent limitations representing the degree of effluent reduction attainable by application of BPT:

Table 21-1

Primary Molybdenum and Rhenium Molybdenum Sulfide Leachate

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of molybdenum sulfide leached

Arsenic

0.968

0.431

Lead

0.195

0.093

Nickel

0.889

0.588

Selenium

0.570

0.255

Ammonia (as N)

61.720

27.130

Fluoride

16.210

9.214

Total suspended solids

18.980

9.029

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times.

Table 21-2

Primary Molybdenum and Rhenium Roaster Sulfur Dioxide Scrubber

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of molybdenum sulfide roasted

Arsenic

3.509

1.561

Lead

0.705

0.336

Nickel

3.224

2.133

Selenium

2.065

0.924

Ammonia (as N)

223.800

98.390

Fluoride

58.770

33.410

Total suspended solids

68.840

32.740

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times.

Table 21-3

Primary Molybdenum and Rhenium Molybdic Oxide Leachate

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of molybdenum contained in molybdic oxide leachate

Arsenic

24.210

10.770

Lead

4.865

2.317

Nickel

22.240

14.710

Selenium

14.250

6.371

Ammonia (as N)

1,544.000

678.800

Fluoride

405.400

230.500

Total suspended solids

474.900

225.900

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times.

Table 21-4

Primary Molybdenum and Rhenium Hydrogen Reduction Furnace Scrubber

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of molybdenum metal powder produced

Arsenic

47.860

21.300

Lead

9.617

4.580

Nickel

43.970

29.080

Selenium

28.170

12.600

Ammonia (as N)

3,052.000

1,342.000

Fluoride

801.400

455.700

Total suspended solids

938.800

446.500

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times.

Table 21-5

Primary Molybdenum and Rhenium Depleted Rhenium Scrubbing Solution

BPT Effluent Limitations

Maximum for any 1 day

Maximum for monthly average

Pollutant or pollutant property

mg/kg (pounds per million pounds) of molybdenum sulfide roasted

Arsenic

1.497

0.666

Lead

0.301

0.143

Nickel

1.375

0.909

Selenium

0.881

0.394

Ammonia (as N)

95.440

41.960

Fluoride

25.060

14.250

Total suspended solids

29.360

13.960

pH

(1)

(1)

(1) Within the range of 7.5 to 10.0 at all times.

Wis. Admin. Code Department of Natural Resources NR 274.212

Cr. Register, March, 1991, No. 423, eff. 4-1-91.