Wis. Admin. Code Department of Natural Resources NR 212.70

Current through October 28, 2024

Section NR 212.70 - Determination of Peshtigo river water quality related effluent limitations

Effluent limitations for point sources discharging BOD₅ to the Peshtigo river shall be calculated according to the procedures contained in this section. These limitations shall apply from May 1 to October 31 annually.

(1) Determine baseline loads for each point source subject to the wasteload allocation.

(a) The baseline load for each publicly-owned point source located between milepoints 9.6 and 0.0 shall be calculated as follows:

Baseline load = (Q) (8.34) (60) + (BPT) (Production)

Where Q = The year 2000 flow projection of the domestic contribution of the influent to the treatment plant expressed in millions of gallons per day

8.34 = Conversion factor

60 = Concentration of BOD 5 expressed in milligrams per liter

BPT = The final best practicable waste treatment effluent limitations for the industrial contribution of the influent to the treatment plant as provided in ch. NR 284 expressed as pounds of BOD5 per ton of production. If ch. NR 284 does not apply, the best practicable waste treatment effluent limitations as determined under ch. NR 220 shall apply.

Production = The annual average off-machine production during January 1 to December 1, 1978 expressed as tons per day

(b) The baseline load for each nonpublicly-owned point source located between milepoints 12.0 and 9.7 shall be calculated as follows:

Baseline load = (BPT) (Production)

Where BPT = The final best practicable waste treatment effluent limitations for the point source which is not discharged to a publicly-owned treatment system as provided in ch. NR 284 expressed as pounds of BOD5 per ton of production. If ch. NR 284 does not apply, the best practicable waste treatment effluent limitations as determined under ch. NR 220 shall apply.

Production = The annual average off-machine production during January 1 to December 1, 1978 expressed as tons per day.

(2) Determine the allocation for each point source.

(a) The allocation for each publicly-owned point source located between milepoints 9.6 and 0.0 shall be a reduction in its discharge to levels appearing in Table 1-p.

(b) The allocation for each nonpublicly-owned point source located between milepoints 12.0 and 9.6 shall be a reduction in its discharge to levels appearing in Table 2-p.

(3) The flow and temperature conditions used to determine compliance with permit effluent limits shall be the representative average measurements of the flow and temperature of the previous day.

Wis. Admin. Code Department of Natural Resources NR 212.70

Cr. Register, May, 1985, No. 353, eff. 6-1-85.

Amended by, CR 15-085: am. (1) (a), (b) Register August 2016 No. 728, eff. 9/1/2016